The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Ironhead Sportster Motorcycle Talk (1957-1985)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

Active Threads
0 Bike wobble question
Last Post: Ferrous Head
Posted On: 5 Minutes Ago
Replies: 3
Views: 21
0 what brand of spark plug do you use?
Last Post: glbsportster
Posted On: 5 Minutes Ago
Replies: 343
Views: 86,023
0 One More Ohio Meet & Eat?
Last Post: sportsterpaul
Posted On: 12 Minutes Ago
Replies: 30
Views: 1,736
0 Keep & Kill
Last Post: Yakcm2
Posted On: 13 Minutes Ago
Replies: 18,348
Views: 1,089,008
2 My 1275 Hammer Conversion..
Last Post: madnss
Posted On: 18 Minutes Ago
Replies: 198
Views: 18,421
0 How Do I Install An Inline Fuel Filter (Carb Model Rubbermount)
Last Post: boomerguy
Posted On: 20 Minutes Ago
Replies: 24
Views: 104
0 ADVICE?Is it supposed to look this cool or am I running lean?
Last Post: sportsterdoc
Posted On: 22 Minutes Ago
Replies: 1
Views: 11
0 Fyi
Last Post: sportsterdoc
Posted On: 26 Minutes Ago
Replies: 5
Views: 211
0 Gear Spacing Question
Last Post: IronMick
Posted On: 37 Minutes Ago
Replies: 13
Views: 296
0 Any Teamsters?
Last Post: sportsterdoc
Posted On: 42 Minutes Ago
Replies: 3
Views: 84
0 Most common rattle locations?
Last Post: Ireeman
Posted On: 43 Minutes Ago
Replies: 21
Views: 652
0 Heads Up Display in your Helmet
Last Post: sportsterdoc
Posted On: 50 Minutes Ago
Replies: 6
Views: 147
5 about the 1999 Sportster Right Fork converting to dual brakes
Last Post: salmanmr
Posted On: 55 Minutes Ago
Replies: 2
Views: 81
0 WTB: Mainshaft Thrust Washers
Last Post: ferretface
Posted On: 57 Minutes Ago
Replies: 2
Views: 44
5 Favourite grips?
Last Post: glbsportster
Posted On: 58 Minutes Ago
Replies: 79
Views: 22,327
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 1 Hour Ago
Replies: 48,601
Views: 7,859,732
0 Any wealthy forum members?
Last Post: Steve9
Posted On: 1 Hour Ago
Replies: 11
Views: 235
0 Stock vs. Modified
Last Post: 60Gunner
Posted On: 1 Hour Ago
Replies: 293
Views: 100,839
0 New oil tank
Last Post: boomerguy
Posted On: 1 Hour Ago
Replies: 47
Views: 3,418
0 Forward controls
Last Post: jsandidge
Posted On: 2 Hours Ago
Replies: 2
Views: 76
0 Iron Mike Comment on WTB/WTS Parts
Last Post: Tim The Grim
Posted On: 2 Hours Ago
Replies: 12
Views: 509
3 86 To 03 HD Forward Controls, Modified To Fit 1980
Last Post: IronMick
Posted On: 2 Hours Ago
Replies: 14
Views: 13,560
0 too much oil in primary
Last Post: randy3934
Posted On: 3 Hours Ago
Replies: 20
Views: 627
0 KT - 2020 - Where Eagles Dare
Last Post: sportsterpaul
Posted On: 4 Hours Ago
Replies: 68
Views: 15,563
0 Oil leak
Last Post: Ferrous Head
Posted On: 4 Hours Ago
Replies: 45
Views: 2,033
0 1969 Shifter shaft bushing
Last Post: brucstoudt
Posted On: 5 Hours Ago
Replies: 10
Views: 370
0 Late XLCH front end - any good?
Last Post: Iron Mike
Posted On: 5 Hours Ago
Replies: 16
Views: 448
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 6 Hours Ago
Replies: 23,058
Views: 2,350,969
0 What Carb
Last Post: npaisnel
Posted On: 6 Hours Ago
Replies: 12
Views: 463
0 Hot Chicks on Hot Bikes
Last Post: wachuko
Posted On: 7 Hours Ago
Replies: 11,202
Views: 2,219,713
More...
Members Birthdays
jdhickm (85), Chip (72), Chief4x4 (70), willyobiker (68), CBryant (67), XLCH69 (64), sage (61), Butch (61), VettesRule (58), jerseyjeff (58), TheExecutioner (55), SalTheWop (55), manic_mechanic, pauldmedic16 (46), BluegrassXL (42), Superman
Reply
 
Share Thread Tools Display Modes
  #1  
Old 2 Weeks Ago
Hippysmack's Avatar
Hippysmack Hippysmack is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2014
Posts: 6,546
Sportster/Buell Model: Xl1250S
Sportster/Buell Year: 98
Other Motorcycle Model: Kawasaki Vulcan 500
Other Motorcycle Year: 95
Reputation: 6529417
Hippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond repute
Default IH Crankcase Pressure and Engine Breathing

I've created a page in the Sportsterpedia for CC pressure and engine breathing.
Link is here: http://www.sportsterpedia.com/doku.p...:ref:engmech07

I figured laying it all out here as I've already done in the Evo section would be a lot of duplicated information.
This is a compilation of what I've been researching for quite a while now.
There are many, many sub documents lit up in blue.
These are all separate pages and all you have to do is click in the blue wording to open the page.

I tried to make the main page more digestible and used the sub docs for further information on certain topics.

This is a lot of information there.
I figure if it doesn't pertain to you, that's OK, but it may pertain to others.
I do realize there are facts as well as theory in this subject matter.
I'm completely open to questions, suggestions, critique or revisions.
This is for all of us and the information needs to be usable and follow-able.
So if there is any parts unclear, in error or needs more explanation, please say so.

It's not finished but I finally came up for air so I figured I go ahead and post what I've gotten done so far.
I'm still waiting for information on the pics for the 8ball breather and hoping to pick for more information as well.
__________________
Reference the XLFORUM'S Sportsterpedia for additional technical information & advice

In Search of Fuel, Sunshine and a Steady Idle.
Reply With Quote
  #2  
Old 2 Weeks Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is online now
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,684
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 6661319
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

Not yet absorbed it all, but you did a great job of organizing, with points succinct.
More reputation points to you...not that many folks are giving rep points recently.
Reply With Quote
  #3  
Old 1 Week Ago
Hippysmack's Avatar
Hippysmack Hippysmack is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2014
Posts: 6,546
Sportster/Buell Model: Xl1250S
Sportster/Buell Year: 98
Other Motorcycle Model: Kawasaki Vulcan 500
Other Motorcycle Year: 95
Reputation: 6529417
Hippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond repute
Default

Thanks sportsterdoc,

I'm doing this for mine and everybody's benefit.
A soon as I understand something new, I just forget it again.
So writing it down helps me too.... what was we talking about again.
Reply With Quote
  #4  
Old 1 Week Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is online now
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,684
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 6661319
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

Quote:
Originally Posted by Hippysmack View Post
So writing it down helps me too....
My dad's brain was sharp right up to his death at 91...that is encouraging, but when I am doing multiple math calculations, if I don't write down the result of each step, I have to do it all over again...and that's only at age 73.
Reply With Quote
  #5  
Old 1 Week Ago
Hippysmack's Avatar
Hippysmack Hippysmack is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2014
Posts: 6,546
Sportster/Buell Model: Xl1250S
Sportster/Buell Year: 98
Other Motorcycle Model: Kawasaki Vulcan 500
Other Motorcycle Year: 95
Reputation: 6529417
Hippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond repute
Default

Heh, I'd be happy if I could remember what I did with that screwdriver I had a few minutes ago.

My dad built paper models. At his age, he was sharp with loads of attention to detail.
Built a rifle that looked very real at a distance and a small motorcycle all out of 8-1/2x 11 sheets of paper printed off and bent/glued.

My hands can't find tools when I just laid them down. Getting old sucks.
Reply With Quote
  #6  
Old 1 Week Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is online now
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,684
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 6661319
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

So, reading the piston sweep volume:

From MobilIndustrial.com

"Total piston sweep is a consideration in the determination of oil-feed rates for some reciproxcating compressor cylinders, and may be determined as length of stroke x cylinder circumference diameter x 2 x no. of cylinders x rpm x minutes of operation."

Does this formula correspond to your calculations?
Is the Mobil formula applicable for a V twin application?

Not challenging your calcs, just wondering.
Reply With Quote
  #7  
Old 1 Week Ago
sportsterdoc's Avatar
sportsterdoc sportsterdoc is online now
Senior Master Custom Bike Builder
 
Join Date: Apr 2012
Location: Mojave Desert
Posts: 13,684
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2002
Sportster/Buell Model #2: XLH883
Sportster/Buell Year #2: 2003
Reputation: 6661319
sportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond reputesportsterdoc has a reputation beyond repute
Default

Quote:
Originally Posted by Hippysmack View Post
Heh, I'd be happy if I could remember what I did with that screwdriver I had a few minutes ago.
My rollaway has a place for each tool, but back in the seventies, when I had three 4 barrel carbs strewn all over the garage floor, trying to make one good one, the tools would be strewn all over with the parts.

Where is that _____? I just had it. And that was half a century ago!

May not necessarily be age, but based upon focus.

Hold that thought and sleep well!

BTW, back when speed shops were abundant, especially in the San Fernando Valley of Los Angeles, parts for Holley carbs were easy to source, but I will take a Carter AFB over Holley any day.
Reply With Quote
  #8  
Old 1 Week Ago
mrmom9r's Avatar
mrmom9r mrmom9r is offline
XL FORUM TEAM MEMBER
 
Join Date: Jan 2011
Posts: 2,235
Sportster/Buell Model: dragbike
Sportster/Buell Year: 1960
Reputation: 256632
mrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant futuremrmom9r has a brilliant future
Default

The older I get , the more I think about the hereafter.

Every time I walk into a room I think " what am I here after?"
Reply With Quote
  #9  
Old 1 Week Ago
Hippysmack's Avatar
Hippysmack Hippysmack is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2014
Posts: 6,546
Sportster/Buell Model: Xl1250S
Sportster/Buell Year: 98
Other Motorcycle Model: Kawasaki Vulcan 500
Other Motorcycle Year: 95
Reputation: 6529417
Hippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond reputeHippysmack has a reputation beyond repute
Default

I did that today actually.
Went out to split the 77 foo-foo apart for pics and went back in the house for a .... still can't remember.

sportsterdoc,
That information actually came from Dr Dick. I haven't ran the numbers.
Sounds like he was talking total volume though.
The subject came up recently of blowby and an earlier question of mine on overall swept volume differences in the year models.
So I plan on expanding that page with calculations.

I believe cylinder swept volume is the volume 1 piston moves to make 1 stroke.
Total swept volume would be both pistons together.
All that changes with different bores and strokes.
And my question of what that does to the different breathers.
Reply With Quote
  #10  
Old 1 Week Ago
bustert's Avatar
bustert bustert is offline
XL FORUM TEAM MEMBER
 
Join Date: Jul 2008
Posts: 10,072
Sportster/Buell Model: 1200s
Sportster/Buell Year: 2001
Sportster/Buell Model #2: xlch
Sportster/Buell Year #2: 1974
Reputation: 3254109
bustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond reputebustert has a reputation beyond repute
Default

hippy always had an analytical mind!
that said, a member here has started me on a tangent project, even pulled it from the closet, an ole vega banjo.
my ? for mr. hippy is have you ever tuned your drums?
i am going to build my own drum dial gauge but looking for experience so as to know what to expect.
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 03:13.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC