Coffee Cup Lid Mod for Higher Flow (pics) - The Hajer Mod [Archive]

chrishajer

14th July 2006, 07:51

I can't work on the bike without coffee (well I can, but I dislike it.) However, I find a lot of inconsistency between vent holes in the most common coffee cup lids found in independent coffee shops. Shown here is a Sweetheart LGX12R lid. I have found the vent holes in these lids to range in size from .005" to .018" with a lot of plastic flash in some cases. The variation in vent hole size means inconsistent flow of coffee.

http://www.chrishajer.com/bike/XLF/coffee-1.jpg

I often modify the vent hole so the restriction does not affect the flow of coffee. Please note: this modification is not EPA approved. Any tampering may void your warranty. Today I used an old razor blade, but you might be able to use a pen or screwdriver too.

http://www.chrishajer.com/bike/XLF/coffee-2.jpg

I make a slice in the lid of approximately .040" on the 20 ounce cup. You may need a smaller slice for a smaller cup of coffee. I don't know since I always get the 20 ounce. Making the slice larger does not seem to increase flow any more than the .040" slice. YMMV.

http://www.chrishajer.com/bike/XLF/coffee-3.jpg

This is a computer enhanced drawing of the slice, since it did not show up in the original photo. The slice does not separate the plastic of the lid that much, so it's hard to capture on film.

http://www.chrishajer.com/bike/XLF/coffee-4.jpg

ofnaman1995

14th July 2006, 07:58

How improved is the airflow at .040? Do you find it adequate?

saltman241

14th July 2006, 08:00

Is there any danger of blow back through the inlarged intake?

Lynk

14th July 2006, 08:05

What *does* a coffee vent fart sound like?

chrishajer

14th July 2006, 08:26

How improved is the airflow at .040? Do you find it adequate?
There is quite a bit more intake noise, but the airflow is sufficient. I might try experimenting at .035" to get the noise down a bit.

--Chris

chrishajer

14th July 2006, 08:26

Is there any danger of blow back through the inlarged intake?
I haven't gotten any reversion thus far.

--Chris

Vegas1200C

14th July 2006, 09:24

I usually run mine with the lid completely off. You have to becareful in the rain and the coffee does tend to run cooler faster but it optimizes flow if you don't mind a little dirt.

lagerdrinker

14th July 2006, 10:26

this thread should be moved to paying taxes forum. i mean you did a rejet.

TOMGRUNT

14th July 2006, 10:29

Seems to be the key issue.

The displacement rate, (being variable) obviously affects the clearance volume and it's effect on volumetric efficiency.

That being said, viscosity due to sugar, cream vs milk etc., MUST be fully considered.:doh

My consultant (Juan Valdez) concurs and is standing by for further assistance as needed.:gun

S/F
T.G.:tour

oldfart99

14th July 2006, 10:39

Hey chrishajer. great post. You obviously have too much time on your hands.;)

edman

14th July 2006, 10:43

For maximum flow I’d opt for just removing the lid all together.

lagerdrinker

14th July 2006, 10:44

Hey chrishajer. great post. You obviously have too much time on your hands.;)

he may have lost a snapring to his trans and figured to focus his attention to something eqaully as important:roflblack

lagerdrinker

14th July 2006, 10:49

For maximum flow I’d opt for just removing the lid all together.

i use the the all ceramic jugs as the exhibit very low frictional losses

toe

14th July 2006, 11:17

Ok, the coffee is going in better........

What are you doing about getting it out???????

ZenBiker

14th July 2006, 12:54

This is the best mod yet! I'm going to try it out right now, I'll let you know how it goes.

chrishajer

14th July 2006, 13:48

I was trying to get a mod named after me. There's the gronk mod, the xena mod, the Vegas mod. I just wanted one of my own :cry1

--Chris

lagerdrinker: I was waiting for one last part to arrive at the HD shop, and also had to go buy a bearing I wasn't expecting to need from the bearing shop, and my car was in the shop, so I was dependent on others and had time to kill.

chrishajer

14th July 2006, 13:49

Ok, the coffee is going in better........

What are you doing about getting it out???????
I don't need any help there. :D

--Chris

VETRAN

14th July 2006, 13:58

...have parlayed this into an excuse to buy that $800 drill press I have been drooling over:p

pops53

14th July 2006, 14:01

...have parlayed this into an excuse to buy that $800 drill press I have been drooling over:p
That sounds perfectly logical to me.:clap

VETRAN

14th July 2006, 14:02

That sounds perfectly logical to me.:clap
But what do you expect from us L riders:p

chrishajer

14th July 2006, 14:04

Good point. I probably could have been more accurate with a drill press. Hmmmm. I actually had the head porting tool right there: maybe I should have used that?

--Chris

VETRAN

14th July 2006, 14:26

Good point. I probably could have been more accurate with a drill press. Hmmmm. I actually had the head porting tool right there: maybe I should have used that?

--Chris

...going that route, How about one of those new 7-axis CNC Bridgeports, or a Waterjet??? Or both???!!!???

snowman

14th July 2006, 14:28

I love this place!!!!:roflblack:roflblack:roflblack

chrishajer

14th July 2006, 14:29

Maybe NRHS can chime in: they have a lot of machines over there. This might be a job for their CNC Flex or something. You certainly need more repeatability than the razor blade can offer.

--Chris

Carl-04XL

14th July 2006, 15:02

After extensive online research, I had to go to the dealer
http://xlforum.net/photopost/data/500/Dunken_Donuts_Coffee_Cup.jpg

to get the latest high tech variable jet part
http://xlforum.net/photopost/data/500/variable_jet_option.jpg

The parts counter only had pre-assembled models
http://xlforum.net/photopost/data/500/coffee_drinker_with_cup.jpg

but they did have a demonstrator on hand
http://xlforum.net/photopost/data/500/South_West_coffee_drinker.jpg

Then I went to the Indy shop to see aftermarket parts
http://xlforum.net/photopost/data/500/colorlidworkings.jpg

That looked a little too high tech for me.

I did find something for my Sweetie
http://xlforum.net/photopost/data/500/something_for_the_lady_drinkers.jpg

I went back to the dealer to inquire about the 100" mod. The salesman had one in the lot with the 'big dunk' option
http://xlforum.net/photopost/data/500/100_inch_mod.jpg

When I win the lottery, I'll be able to fill my stable
http://xlforum.net/photopost/data/500/multi-cup_stable.jpg

(Hey, where did the pix go??? All I got were a bunch of links! Gotta do some research on this. Now I got it. Phew, thought I'd lost it again! :roflblack :roflblack :roflblack )

CT1200

14th July 2006, 15:08

Dynojet has to make a kit for this somewhere

smoke

14th July 2006, 15:14

Ok, the coffee is going in better........

What are you doing about getting it out???????

I can attest that the hajer mod does not induce drag(ging) pipes, unlike most mods, this one increases the intake and the exhaust simultaneously.

dooley

14th July 2006, 15:21

I tried alot of different performance mods,but never was really happy with the power gains.
In the end I decided that messing with the intake and exhaust was never gonna get me where I need to be,and decided to go with a wet shot of Nitrous!

Scooter_Trash

14th July 2006, 15:48

Ok, the coffee is going in better........

What are you doing about getting it out???????

You may have to refer to the Gronk mod thread. I find it best to do this mod after heavy narcotics.

bmonty72

14th July 2006, 16:24

I would HIGHLY advise against performing the GRONK MOD on yourself!!!! Go to a professional piercing shop for that. :eek:

chrishajer

14th July 2006, 16:26

chrishajer

14th July 2006, 16:28

The parts counter only had pre-assembled models
http://xlforum.net/photopost/data/500/coffee_drinker_with_cup.jpg

WHO is this?

--Chris

Casper

14th July 2006, 16:37

WHO is this?

--Chris
I was wondering the same thing! I gotta admit, I like their pre-assembled models! Are those stock, or did someone do the big jug conversion?

...oh, and the lid's not bad, either. :D

NRHS Sales

14th July 2006, 16:43

I am quite sure that will void your warranty!

Carl-04XL

14th July 2006, 16:47

Don't have a name, but the site was not in English.

This is her after the sale.

http://xlforum.net/photopost/data/500/coffee_drinker.jpg

asphalt addict

14th July 2006, 16:51

Is it okay to bore those lids without using torque plates?

chrishajer

14th July 2006, 16:53

Is it okay to bore those lids without using torque plates?
Good point. I was in a hurry and didn't do that. I have to get some smaller torque plates though. I have only from 3" to 4".

I'm working on a new mod that I will post shortly.

--Chris

LuxBlue

14th July 2006, 17:10

Just curious, you runnin' decaf or dark roast? If decaf, you might want to run richer. Dark roast, I'd lean her out:roflblack

Looks like the blonde got the 88" conversion!

MOREHP

14th July 2006, 17:12

mhamden

14th July 2006, 17:13

:roflblack :roflblack :roflblack :roflblack :roflblack Chris seems like you have way to much time on your hands. Thanks for the post.

chrishajer

14th July 2006, 17:14

I've never run decaf, and the dark roast is too burnt for me. I run a medium roast house blend, depening on the shop, with half and half and Equal. I wonder if that's my problem?

Also, I ALWAYS buy my coffee from my local indy.

--Chris

chrishajer

14th July 2006, 17:16

NO NO NO .040 is way too big for the mods on that cup. I dont care what you have done to it a .032457 should take care of anything you can do to that cup. A cup with a jet that size will foul your sphincter right out. And nobody likes a fouled sphincter. If you continue to use that size hole be prepared for some serious bottom end damage and endless packs of fruit of the loom. you have been warned
Thanks for the heads up. I'm a total noob on the coffee cup mod. I will post my second mod later.

Do you have the drill bit size for .032457? Does it come in the Dynojet kit? Can I get the lids already modified on eBay or from Zanotti's?

--Chris

Casper

14th July 2006, 17:23

Morehp, I think most of us should be okay with an 040 jet. Enough of us have been told (repeatedly) that we're nothing but big a:censorholes, so I think we've got the exhaust end covered (no pun intended...actually, scratch that. I'll take credit/blame for that pun).

LuxBlue, yeah, after seeing the after pics, those are definitely 88'ers! I'd love to see pictures of the bottom end, or see what headwork she did! (Hey, with jugs that size, you have no choice - you have to have cases and head work done!):D

bs2100

14th July 2006, 18:43

I'm afraid of doing this mod myself, is there somewhere that sells pre modded lids? Maybe I'll just look for an extra one on ebay to practice on.

chrishajer

14th July 2006, 18:51

I have a supply of these lids premodded. Just send me $12.50 via paypal, and I will send out your lid. I have a subscription service also so that you will have a fresh lid every day. There's a 16% discount if you buy in bulk.

--Chris

JackPine

14th July 2006, 19:00

I can't work on the bike without coffee (well I can, but I dislike it.) However, I find a lot of inconsistency between vent holes in the most common coffee cup lids found in independent coffee shops. Shown here is a Sweetheart LGX12R lid. I have found the vent holes in these lids to range in size from .005" to .018" with a lot of plastic flash in some cases. The variation in vent hole size means inconsistent flow of coffee.
I often modify the vent hole so the restriction does not affect the flow of coffee.

Do you realize that by increasing the size of the vent you could allow scalding coffee to pour all over yourself . The vent was made that size for a reason and by enlarging it you are in flagrant violation of The International Coffee Cup Safety Code.
By posting what you do I believe that you are encouraging others to break other vital safety rules such as sustituting a larger straw in a milkshake, eating fries without a fork.
Where are the moderators at a time like this.They should be watching out for the safety of the masses. It's posts such as this that lead people to believe that all motorcycle riders are just crazed thrill seekers.:eek:

chrishajer

14th July 2006, 19:03

OK - I deserve it.

:spank

--Chris

chrishajer

14th July 2006, 22:26

OK.

I was unhappy with the possibly imprecise flow that came from a razor slice in the lid. So I reread the gronk muffler mod instructions and applied the same principles to the lid.

I took a .027" sewing needle, and made 31 holes to make a total of 32 holes in the lid.

http://www.chrishajer.com/bike/XLF/gronkmodlid.jpg

The holes are not truly .027", because the plastic closes up after removing the needle.

Here is a video of the flow BEFORE the gronk mod:
http://www.youtube.com/watch?v=tCOAntI6Yzs
106.72 seconds to drain 20 ounces

Here is a video AFTER the gronk mod:
http://www.youtube.com/watch?v=HMEdgfhy92w
22.62 seconds to drain 20 ounces

As you can see, the modded lid has increased flow considerably. I timed how long it took to pour water out of each cup. stock and gronk modded. The cup with the stock lid took 106.72 seconds to drain. The cup with the gronk modded lid took only 22.62 seconds to drain.

There are some variables unaccounted for though. The water was not hot, it was room temperature. Would the rate of flow be affected by the hotter temperature of the coffee? It was pure water, rather than coffee doctored with half and half and Equal. Might that make a difference?

But, using the same liquid, at the same temp under the same atmospheric conditions, the gronk modded lid drained 300% quicker.

--Chris

Scooter_Trash

14th July 2006, 22:31

That Gronk is one smart guy. Why is your water a greenish-blue color?

chrishajer

14th July 2006, 22:35

For visual effect, and my son was helping me, so food coloring goes in everything. :D

--Chris

geekrider

14th July 2006, 22:53

Personally I use a .31337 hole. But keep in mind if you upgrade to a bigger jug, like a 24oz or definitely a 32oz, you'll need to get a whole new lid. That little Sweetheart just won't keep up with the bigger bore.

Vegas1200C

14th July 2006, 23:02

Is anyone working on a map for the ESPCI models? (coffee injected)

chrishajer

14th July 2006, 23:04

Turbota??

--Chris

chrishajer

14th July 2006, 23:06

.31337 hole

Nice :geek (just got my 2600 in the mail today...)

--Chris

669Sprink

14th July 2006, 23:07

Using this mod, I should be able to get another 20oz. In before work starts! :wonderlan..Thanks chris...:laugh

Kev R.

chrishajer

14th July 2006, 23:09

Glad to help.

--Chris

TOMGRUNT

14th July 2006, 23:21

BACK IN THE GOOD 'OL DAYS...

A lid was $20.00 (This Is No Shit!:smoke )

OOPS...Wrong Lid...:shhhh

As you were....:banapart

S/F
T.G.:tour

chrishajer

14th July 2006, 23:25

:roflblack

--Chris

Vegas1200C

14th July 2006, 23:28

Okay Bob, how many joints in a lid?

Gary

15th July 2006, 02:43

Why is your water a greenish-blue color?He's obviously running synthetic.

Gazza

Irondrake77

15th July 2006, 03:18

I think you'll find if you go for the CVO screaming eagle Fat Cup, you see in picture 1 It's bigger then most, long handle, and all metal construction that allows for running hot up to a full 72 hours!!! I kid you not, I can fill up and open it up 2 days later and still be hot. And check out that full opening in pic2, allowing for full ventilation while full open for maximum guzzling. Only an Ironhead would run an all-metal, and I only run Dark roast, sometimes with a shot of vanilla for that extra boost. :D :D :D :D :D

sportyblue

15th July 2006, 06:56

My favorite cup is a Starbucks 16oz cup. If I need a new one I wait until the Christmas season when they have the great colors....red, green and blue. Also, they are not microwaveable but are dishwasher safe. I did microwave mine once and melted it some but it is still very useable. Now the great part is the lid only goes 1/2 turn and it is on tight..... you can easily get the lid on right so that when you tip it up to take a drink .......it is exactly the way you want it. The first picture is the cup and the second picture is all the crap I put in my coffee except I don't always have the flavoring at home. I drink 100% Colombian at the moment.

http://xlforum.net/photopost/data/500/medium/CUP.JPG

http://xlforum.net/photopost/data/500/medium/COFFEE.JPG

Also, I like to stir it all up with a long handled spoon............:smoke :smoke

EDIT: The vent on this cup is a micro you can barley see it spot.

gronk62

15th July 2006, 07:15

:laugh Funny thread Chris. :roflblack :roflblack

I wonder if K&N would consider makin' a washable/oiled high flow version :D

whispanic

15th July 2006, 07:39

I know its illegal damn near everywhere but I run my straight!

http://www.latus-harley-davidson.com/mtrclothesimages/99221-03v.jpg

No inner wall damage that I have been able to see yet, but I mic it this weekend.

Adios

Terry C.

15th July 2006, 18:14

Okay Bob, how many joints in a lid?

Two!!!

(showin' my age)

whispanic

15th July 2006, 20:45

Nice :geek (just got my 2600 in the mail today...)

--Chris

Free Mitnick!

Oh wait a minute...

Adios

jwbradbury

15th July 2006, 21:05

JackPine

15th July 2006, 21:32

I saw the original picture and started drinking mine with the razor blade still in the lid... glad the other picture finally came through on my computer. I couldn't figure out why my mustache kept getting trimmed every time I took a sip.... :roflblack

J.W.
This is an example of the wonton damage which can be done when untrained proffessionals attempt almst (in my opinion illegal mods to a coffee cup) The cup was designed so that that contents would come out at an appreciable rate, so that they could be enjoyed. Designed to retain the heat and aroma.
But Mr thrill seeker has flaunted science and humanity for his own personal pleasure and is now dragging others down as well.
Soon I fear the government will have to become involved and then you know where we will be.
please I implore no further mods to the cups or the suggestion that they are "girlie cups will raise it's ugly head.
That wasn't easy

Casper

15th July 2006, 21:50

I saw the original picture and started drinking mine with the razor blade still in the lid... glad the other picture finally came through on my computer. I couldn't figure out why my mustache kept getting trimmed every time I took a sip.... :roflblack

J.W.
Whoa, lemme get this straight. Get my caffeine fix AND trim the mustache at the same time? Any chance of putting a set of blades on the other two 'corners' of the cup so I can trim the beard as well?

pops53

15th July 2006, 22:42

Two!!!

(showin' my age)
One if you use the paper from Cheech and Chongs Big Bambu album.:banana

blueglide88

15th July 2006, 22:52

Chris,

I have to question your mod. To me, the razor cut looks more like .125". Chugging tests show a 60% increse in flow compared to your "claimed" .040 opening. Now you wouldn't be misleading us forum mmbers just to gain a performance advantage, would you? :D

jwbradbury

16th July 2006, 16:33

The U.S. District Court in San Francisco has granted a temporary 'cease-and-desist' order which was sought by the ACLU (American Cup Lid Uncut) organization.

The majority opinion was written by Justice Juwanna Bytemee, and under the order anyone caught willfully cutting on any drink lid will have their pee-pees whacked by the balliff.

We'll have more right after this quick break..... :rolleyes:

J.W.

chrishajer

16th July 2006, 16:40

chrishajer

16th July 2006, 16:41

chrishajer

16th July 2006, 16:42

I just noticed a mod changed the thread title to add "The Hajer Mod".

HA :laugh

--Chris

GSB_77_XL

16th July 2006, 17:03

Holy Hell this is a great thread, but I have a couple of questions. Is this mod easily reversable incase I dont like the results or do I have to buy a whole nother lid? I just dont have that kind of money lying around you know. Maybe I will check ebay to find a take off to practice on before I commit to damaging my lid.
Will this work on the catalyst lids also?

jwbradbury

16th July 2006, 17:08

chrishajer

16th July 2006, 17:08

It is a permanent mod. It's not for the faint of heart. I would recommend getting a spare lid from the dealer before you modify yours. I guess you could get one from eBay too, but the shipping might hurt. Try Zanotti's.

It does not work on the catalyst or EFI models. Sorry.

--Chris

chrishajer

16th July 2006, 17:13

It can be done but you have to be very careful... two words:

Duct Tape...!

J.W.
See, that's American Ingenuity there. I am always spouting the Official™ Factory™ way: buy a new part. I gotta be more careful.

--Chris

jwbradbury

16th July 2006, 17:14

I haven't heard of anyone trying that mod on an EFI model cup...

By the way, the ACLU got involved in this whole mess because so many Left Coast cagers had heard about the mods being done, but being such ignorant pansies, they kept cutting the bottom of the cup... That increased the flow quite a bit but many were ending up with soggy cell phones and Blackberries which were attached to their belts.

J.W.

geekrider

16th July 2006, 17:24

Ok, first Chris gives us
CV Carb Mod to Reduce Carb Farts (http://www.xlforum.net/vbportal/forums/showthread.php?t=30561)
and now we get
Coffee Cup Lid Mod for Higher Flow (http://xlforum.net/vbportal/forums/showthread.php?p=431090)

What's next? A high flow mod for my gas grill? Can I get better volume from my shower head? We want more! The masses are waiting....

cantolina

16th July 2006, 18:02

I just noticed a mod changed the thread title to add "The Hajer Mod".

HA :laugh

--Chris

I think this should be called the "Hajer Principle"....

It's a dumbed-down version of carbeuretion vs exhaust.....

:clap:clap:clap:clap:clap:clap

chrishajer

16th July 2006, 18:11

:roflblack You guys can call it whatever you want!

--Chris

Irondrake77

16th July 2006, 18:48

What's next? A high flow mod for my gas grill? Can I get better volume from my shower head? We want more! The masses are waiting....

I personally would love a high flow mod for my shower head, but I find if you swith to coal instead of gas you would be able to use the high flow velocity stack that is standard on most smokers, and who doesn't like some good smoked meat :smoke

a45junkie

16th July 2006, 19:21

i'm sceptical, got any flow bench charts on this mod?

chrishajer

16th July 2006, 19:25

Hmmm. Empirical visual evidence was not enough? I will put the lid on the flow bench. I have a new one today unmodded, so I will flow that, then perform the mod and flow it again. I was just reading a kiltbill post and he is looking at a thunderslide mod for his coffee cup.

Damn skeptics!

--Chris

chrishajer

16th July 2006, 20:02

http://www.chrishajer.com/bike/XLF/sweetheart-flow.gif

--Chris

a45junkie

16th July 2006, 20:07

dang thats a big difference, can anybody do this mod or do you need to be certified?

chrishajer

16th July 2006, 21:42

Certified coffee technicians only. I sell modified ones for $12.95, and I throw in a free sleeve to keep from burning your hands.

--Chris

GSB_77_XL

17th July 2006, 00:33

Certified coffee technicians only. I sell modified ones for $12.95, and I throw in a free sleeve to keep from burning your hands.

--Chris

Is the sleve similar to fiberglass exhaust wrap? Does it increase the flow as well, and what colors does it come in?

chrishajer

17th July 2006, 05:40

The patented sleeve (http://www.britevision.com/home/index.php) helps improve flow by keeping the temperature of the coffee up. It is not fiberglas but a space age cellulose composite (http://www.forestprod.org/woodfiber05neagu.pdf). I do have some Moose fiberglas muffler packing, so I might just try that and do some more tests.

See first website for available colors.

--Chris

Folkie

17th July 2006, 08:44

dang thats a big difference, can anybody do this mod or do you need to be certified?
Oh yes, you should definitely be certified. :D

Carl-04XL

17th July 2006, 17:56

I've been googling the aftermarket and found other options for sleeving:
diamond mat (http://www.polypaconline.com/) for the cup, and also for putting your cup 'on the bottle'.
Then there is the inexpensive advertising sleeve (http://coolcuff.com/).

And the original inventor is still in business. He will even send samples of other peoples customization if you ask (http://www.javajacket.com/products.php).

Carl-04XL

17th July 2006, 17:59

Oh yes, you should definitely be certified. :D

Some BC (Big Cup) owners think us Sporty Cup'ers are certifiable. But, we know what we like, and we like modifications.

chrishajer

17th July 2006, 18:01

I like the aftermarket sleeve idea.

Also, today, I tried a different mod, shown as V3 in blue on the graph, and it works really well. It's a lot more free flowing than the other two mods and a lot simpler. I stuck the tip of a pen in the hole to enlarge it. It was a Fisher Space Pen, blue ink, medium tip. I inserted the tip of the pen until the body of the pen made contact, then removed the pen. The hole in the lid is more than adequate, without all the complicated work of the other two mods.

YMMV, and, please be careful with hot coffee.

--Chris

chrishajer

17th July 2006, 18:03

Has anyone mentioned that these are girl's cups?

--Chris

Casper

17th July 2006, 18:10

May be a girl's cup, but to steal a quote from Chuck (cantolina), I got parallel stir sticks, I'll kick yer ass! :D

geekrider

17th July 2006, 18:43

YMMV, and, please be careful with hot coffee.
--Chris

Be careful, the FTC frowns upon Hot Coffee (http://en.wikipedia.org/wiki/Hot_coffee) mods...

pops53

17th July 2006, 18:50

Has anyone mentioned that these are girl's cups?

--Chris
Do they come in size DD?

milmat1

17th October 2006, 13:10

milmat1

17th October 2006, 13:14

Have any flow mods for longneck Bud-Lites ???

Carl-04XL

31st October 2006, 17:04

Have any flow mods for longneck Bud-Lites ???

I've never seen it, but there was this guy who said that his cousin knew this dude whose ex-girlfriends brothers uncle-in-law invented a mod.

It concerned adding an intake tube through the exhaust port. This tube was supposed to allow additional air to adjust the abfr (air-beer flow ratio). I was told that it took about three years to get the length vs diameter correct for the optimal abfr.

I don't think it was applied to Bud-Lites, maybe to the Corona Long-necks.

I did find some cooler tech for both.http://xlforum.net/photopost/data/500/thumbs/Cooler_L_T_Detail.jpg http://xlforum.net/photopost/data/500/thumbs/Corona_Detail.jpg

Folkie

31st October 2006, 17:22

I've never seen it, but there was this guy who said that his cousin knew this dude whose ex-girlfriends brothers uncle-in-law invented a mod.
'Uncle in law', hmmm; would that be your wife's uncle, or your aunt's husband?

Horse

1st January 2007, 14:42

Help! I think I burnt a valve using this mod. With the onset of colder weather it was running way too rich for the first 10% of the cup. Does anyone make an adjustable lid, or am I stuck adjusting the flow manually after the initial pour?

chrishajer

1st January 2007, 15:31

In Chicago, adjustable lids are available at White Hen and sometimes 7-11.

:D

--Chris

bear

10th January 2007, 04:41

i believe a slice of .050 wll change the time /space continuiom:doh :doh :doh

milmat1

13th May 2007, 05:13

I have to BUMP!! This for all the newer members !!

smackie

19th July 2007, 08:31

what about installing a vent system as Diemus or bunny suggested. this would keep from having coffee loss and let it run closer to operating tempuratures.
I dont think it will improve the flow either way with any of these mods, will let you get more out of one cup

Vegas1200C

28th August 2007, 07:34

I've been a bit disappointed with a lot of threads lately. Too much bashing and off topic useless highjacking just to throw the word ghey into a thread for no apparent reason. It made me think back to a simpler time when we discussed the important things like coffee lids. If there was a thread of the year award I think this one would have taken the prize. A great collective effort and no one was injured in the making of it.

Folkie

28th August 2007, 09:42

AussieGazza

28th August 2007, 10:27

Does the grind of the coffee and does using or regular or super milk make a difference?

Carl-04XL

22nd October 2007, 14:39

Does the grind of the coffee and does using or regular or super milk make a difference?

I think the penchant of the Southern Hemisphere'rs to use left hand grinders was incorrectly perceived to make a difference.

On the udder hand, the grade of milk does make a difference. The better grades give better sippage, but the lower grades give better flow. Now for those who dont' have beef milk, most grades of goat mild give a slightly lesser sippage while giving slightly better flow.

Vegas1200C

22nd October 2007, 15:00

If you are having a problem with your current grind then upgrading could help but if you are already at max flow then a higher grade is a waste of money. Additives like sweeteners or dairy products are nothing but contaminates when you are looking for max flow. Stay away from any additives unless you are willing to go Stage II or III.

Folkie

22nd October 2007, 16:49

Additives like sweeteners or dairy products are nothing but contaminates when you are looking for max flow.Or taste. Or anything remotely recognisable as coffee. http://img.photobucket.com/albums/v319/cigarman/cigarman.gif

CT1200

14th December 2007, 16:11

So what size jet do I need to use after I complete this mod?
And will I have to reflash my map when I'm done?

That should cause some trouble... ;-)

Carl-04XL

17th December 2007, 17:13

So what size jet do I need to use after I complete this mod?
And will I have to reflash my map when I'm done?

That should cause some trouble... ;-)

Above a certain size, having a bigger jet is just overcompensating for poor performance coffee.

And you will only have to re-flash your map if your primary source moves or closes. Some Indie sources have lids that can handle huge amounts of usage, but these lids are subject to more pilferage by those who incorrectly perceive that you have something they can't otherwise get. Those people need to be informed about the benefits of Indie suppliers.

Irondrake77

18th December 2007, 00:50

I can't find an indy that has a lid with my favorite coffee company logo on it and chromed. Suggestions?

chrishajer

18th December 2007, 21:56

...just overcompensating for poor performance coffee.

CLASSIC

--Chris

buckhorns

29th December 2007, 17:11

I put some JB weld over the vent hole to help keep the coffee warm longer. http://i120.photobucket.com/albums/o177/buckhorns/Clowns.jpg

Carl-04XL

31st December 2007, 15:57

I put some JB weld over the vent hole to help keep the coffee warm longer.

Ah, the JB fix.

Now some would think that something as useful as JB could fix anything, but this sometimes gets one into unusual circumstances.

Putting JB in the vent hole is a precision job that requires a very steady hand and an eye for minuscule material application.

There are those who think that if some is good, then more is better and a lot is great. These people have been sadly mislead about the performance characteristics of using JB. Using excessive JB actually leads to loss of performance and sometimes to complete failure to perform.

Addition of JB actually dilutes the mix to less than optimum flow standards and can lead to unnecessary spillage and even upset equilibrium.

Oh shat, you're talking about JB weld, not JB whiskey...Well, never mind about the above.

JB weld does an admirable job of reducing flow when applied to the vent, but it does look ugly. Now if sufficient amounts are applied to the sleeve prior to its installation, then the sleeve acquires never-slip properties as well as increases in heat retention.

(Happy New Year everybody!)

1fast2liter

31st December 2007, 21:52

no all considering this hand mod are you using forced induction or is this a naturally aspirated.... if your na then yes the vent will help tremendasly.. other wise the whole would be going to waste.... have you ever thought of maybe enlarging the outflow of exhausted fluids to help with a higher flow capacity? or are you limited to the flow charicteristics of the stock lid?

murphyslaw

31st May 2008, 10:34

the Exhaust of the stock lid is over engineered and is capable of flowing way more then the intake system will allow for. Thus the creation of the Hajer intake mod. Now the idea of forced induction I hope is just playful banter as such methods would be extreamly dangerous when applied to this application. These jugs are not designed to handle the cylinder pressure that would be presented by any level of forced induction. Application of such would cause cylinder wall rupture and even lid separation from the jug itself.

1fast2liter

1st June 2008, 05:28

point well taken.. but what if maybe some form of strenthening ie bracing was applied? not only would this keep it all togeather but also help insulate the jug for greater performance yet.

murphyslaw

1st June 2008, 07:37

perhaps we can get NRHS to machine a jug with thicker walls so that it can stand up to forced injection....

1fast2liter

1st June 2008, 09:54

but their in lyes another problem.. now your looking at custom parts ie money. when you can go to your local indy and have parts readily available........ may they can come up with a loct light mod that will be cheaper but just as effective

Weo

1st June 2008, 10:28

From a former coffee/caffeine addict... second option: let it cool a little and then stick a straw in the openning... :P

maddog

1st June 2008, 12:32

From a former coffee/caffeine addict... second option: let it cool a little and then stick a straw in the openning... :P

Would that be like using a Forcewinder on my CV?

Carl-04XL

1st June 2008, 13:25

No, I don't think so. I think it would be more like inverse ram air induction: sorta suck-exhaustion. :laugh:laugh:laugh

1fast2liter

2nd June 2008, 13:33

No, I don't think so. I think it would be more like inverse ram air induction: sorta suck-exhaustion. :laugh:laugh:laugh

wouldnt that increase volumetric effecincy?

Carl-04XL

2nd June 2008, 15:47

wouldnt that increase volumetric effecincy?

Don't know! Somewhere there is a mathematical formula that describes the efficiency of 'suck-exhaustion'. Probably has something to do with the difference in the inches of mercury of the 'sucker's' vacuum and the atmospheric pressure, (adjusted for the diameter and sidewall stiffness of any possible 'suck stick' used) and how good the seal is between the lips and the lid/cup (or suck stick). If the 'sucker' has a overly large mouth, then the fit of the lid comes into plan; you know, the part that hangs over the rolled edge of the cup.

1fast2liter

4th June 2008, 09:14

ah yes i see what your saying..... with this same said formulat take into consideration the lenth of said suck stick also? and also diameter? another thought what about gravity feeding? would this be another method that mite be prefered?

Carl-04XL

9th June 2008, 15:12

Ya know, if I remember the formula that I saw, I think it did have a variable for length. I think it was called 'head something' and was designated (29.92-head) and was measured in inches. As I recall, more 'head' implied less flow.

Of course, if the sidewall stiffness was sufficiently limp, then that variable controlled maximum flow at various values for 'head' and sucker vacuum vs atmosphere pressure. Only slightly modified for diameter of the suck stick, (something about square pie).

Ya do know that without suck sticks, the formula is effectively non-effective at describing flow because 'head' is zero and that makes flow only dependent on the exhaust port area divided by intake area. So we are back at the original question... (see earlier posts).

powellsanmiguel

9th June 2008, 17:33

This is an example of the wonton damage which can be done when untrained proffessionals attempt almst (in my opinion illegal mods to a coffee cup) ...

I have read all of this thread and cannot see how wontons could be damaged by this mod. First, coffee is being used in the cup, rather than Chinese soup, and thus, no wontons are likely to be present. Second, wontons are traditionally larger than the opening of a typical lid, and would only bounce back into the soup if removal was attempted. Vigorous sucking of the wontons might work, but I wouldn't want to try it.

Also the mod will certainly work on later model lids, it certainly won't on lids made from 1957 to 1985 as they were, of course, made of iron. So if you have one of those, don't even try it.

honkytnkmn

9th June 2008, 18:06

I make a slice in the lid of approximately .040" on the 20 ounce cup. You may need a smaller slice for a smaller cup of coffee. I don't know since I always get the 20 ounce. Making the slice larger does not seem to increase flow any more than the .040" slice. YMMV.

This is a computer enhanced drawing of the slice, since it did not show up in the original photo. The slice does not separate the plastic of the lid that much, so it's hard to capture on film.

I believe this mod would work on any size cup. Personally I prefer to use a 1/8th inch phillips screwdriver. I know I know you guys are gonna say its too big and that I may be making an unsafe mod, but I've been doing it for years and I've never had a problem yet.

chrishajer

13th June 2008, 15:18

I used to use a #0 phillips screwdriver, but it's hard to get a patent on that generic method.

--Chris

Carl-04XL

17th June 2008, 06:06

for those who get a new lid when the tank on the old one is empty, maybe having one of those eyeglass repair kits will provide a suitable tool for mod'ing the next lid... in either the key chain kit or one of those larger ones for the saddlebags.

Ron9

17th June 2008, 06:56

Not sure but .. it looks to me with a little larger ...... umm vent - you could drink it and snort it at the same time.

Newbies should not try that .... unless you are alone. We would not want your girlfriend to see you cross eyed from a misfired .... snort.