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  #1541  
Old 11th September 2018
MatHormell's Avatar
MatHormell MatHormell is offline
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Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
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Great day at the track! New PB and first win!

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HAMMER PERFORMANCE 90 Ci
CP .500 Dome Pistons
Axtel Cast Iron Cylinders
HAMMER PERFORMANCE .600 Cams
1.725 Ratio S&S Rocker Arms
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XR1200 Crank Conversion W/ Case Mod 34T
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  #1542  
Old 11th September 2018
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MatHormell MatHormell is offline
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Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
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10.07 pass on the helmet cam.

https://youtu.be/vX4kporWyXA


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  #1543  
Old 27th September 2018
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MatHormell MatHormell is offline
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Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
Reputation: 958932
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Made a few recent changes

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  #1544  
Old 30th September 2018
jkinkade jkinkade is offline
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Hi Mat,
Wow you will need a wheelie bar!
will be good to see what time's you do with the bottle!! & how it handles the extra HP + TQ at track. how much of a shot will you give it? & will the Mik 48 give enough extra fuel?
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  #1545  
Old 1st October 2018
MatHormell's Avatar
MatHormell MatHormell is offline
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Join Date: Jul 2015
Location: Merica!Fock YA!
Posts: 1,264
Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
Reputation: 958932
MatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond repute
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No bar life!!!

No nitrous here yet, may end up adding a small bottle in good time to keep up with all these stretched zx14s around here on nitrous lol.

Ran by new PB in the 1/8 last night with the new stack and boyesen Xwing.
Looking at my best 1/4 slip. This 1/8 would of been a 9.9 run had I been on the 1/4. Improvemnts are being made!


Wanted to product review the Xwing also..

Last night was the first start and runs using it along with a velocity stack, in place of the hammer performance backing plate ran open.

So here is what I noticed right off the first start.

A far smoother and more consistent idle. My bike has never idled so good before. It was low 70s all night, no choke, started everytime, no fluctuations in idle or carb pops and the most consistent smooth AFR its has had yet holding steady at 13.1.

Secondly the throttle response. It's hard to beat a Mikuni HSR and its throttle responsiveness. I actually prefer the HSR over most all Harley injection as far as throttle response goes. Well it got better, alot better. When staging it held high rpm much more steadily and the slightest wack of the throttle was instantly turned to revs.

I haven't had it on the street yet, but can only assume the same characteristics will apply in part and mid throttles.

Top end didn't loose any and pulled my new personal best of 6.36 seconds in the 1/8, so it for sure isnt taking anything away from the big end. The AFR has never been so smooth and flat, mind you, I've spent extended periods of time in the dyno trying to perfect its AFR line.

For less than $100 I do not regret the purchase what so ever. I know my motor very well and how it behaves. Its very consistent and dialed into me and I can say without a doubt the Boyesen Xwing made an improvement across the powerband and worth the purchase.

So its staying in.

Was having trouble with the wego getting to to log RPM perfectly, think I need a better connection at the coil.



Quote:
Originally Posted by jkinkade View Post
Hi Mat,
Wow you will need a wheelie bar!
will be good to see what time's you do with the bottle!! & how it handles the extra HP + TQ at track. how much of a shot will you give it? & will the Mik 48 give enough extra fuel?


Sent from my SAMSUNG-SM-G890A using Tapatalk
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  #1546  
Old 2nd October 2018
jkinkade jkinkade is offline
Chief Harley Engineer
 
Join Date: Jan 2016
Location: on the Australian east coast
Posts: 576
Sportster/Buell Model: XLH 88" 2003.
Sportster/Buell Year: 2003
Reputation: 116365
jkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud of
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Quote:
Originally Posted by MatHormell View Post
No bar life!!!

No nitrous here yet, may end up adding a small bottle in good time to keep up with all these stretched zx14s around here on nitrous lol.

Ran by new PB in the 1/8 last night with the new stack and boyesen Xwing.
Looking at my best 1/4 slip. This 1/8 would of been a 9.9 run had I been on the 1/4. Improvemnts are being made!


Wanted to product review the Xwing also..

Last night was the first start and runs using it along with a velocity stack, in place of the hammer performance backing plate ran open.

So here is what I noticed right off the first start.

A far smoother and more consistent idle. My bike has never idled so good before. It was low 70s all night, no choke, started everytime, no fluctuations in idle or carb pops and the most consistent smooth AFR its has had yet holding steady at 13.1.

Secondly the throttle response. It's hard to beat a Mikuni HSR and its throttle responsiveness. I actually prefer the HSR over most all Harley injection as far as throttle response goes. Well it got better, alot better. When staging it held high rpm much more steadily and the slightest wack of the throttle was instantly turned to revs.

I haven't had it on the street yet, but can only assume the same characteristics will apply in part and mid throttles.

Top end didn't loose any and pulled my new personal best of 6.36 seconds in the 1/8, so it for sure isnt taking anything away from the big end. The AFR has never been so smooth and flat, mind you, I've spent extended periods of time in the dyno trying to perfect its AFR line.

For less than $100 I do not regret the purchase what so ever. I know my motor very well and how it behaves. Its very consistent and dialed into me and I can say without a doubt the Boyesen Xwing made an improvement across the powerband and worth the purchase.

So its staying in.

Was having trouble with the wego getting to to log RPM perfectly, think I need a better connection at the coil.





Sent from my SAMSUNG-SM-G890A using Tapatalk
Sounds positive!
can't wait to see a time slip thats in the nines and a trap speed in the 130's!

as they say get 60' down & if you don't make any mistakes the ET will drop!
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  #1547  
Old 22nd October 2018
MatHormell's Avatar
MatHormell MatHormell is offline
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Join Date: Jul 2015
Location: Merica!Fock YA!
Posts: 1,264
Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
Reputation: 958932
MatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond repute
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Few more changes made before the final PMRA race of the season this coming weekend. Going to give clip on bars a try, had to lower forks about 1 1/2" into the tree for them to fit. Puts my wheelbase right at 62". Got the manifold side of carb air divider installed and a map air sensor screen in my stack. Planning to drill the hammer manifold out for a Map sensor to read with my wego3. Hoping to break into the 9s this weekend. Going to have cool good air. http://cloud.tapatalk.com/s/5bce2d14...022_123410.mp4

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  #1548  
Old 23rd October 2018
jkinkade jkinkade is offline
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Mat, very interesting, that screen is over my head!!
It looks to me like it might restrict air flow. can you explain how it works?
the other crossed metal plate, seems to work if 1/8th mile time in line with a 9.9 quarter.
the 1.5 inch drop via fork tubes, sounds like a positive move as in drags the lower the better.

hope you get good weather, good air quality on the last time at track for season!!

also I was looking at your Datta log, after 490 seconds the AFR goes lean is that when you backed off? but rev also high?
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  #1549  
Old 24th October 2018
MatHormell's Avatar
MatHormell MatHormell is offline
Senior Chief Master Mechanic 1st Class
 
Join Date: Jul 2015
Location: Merica!Fock YA!
Posts: 1,264
Sportster/Buell Model: XL883R
Sportster/Buell Year: 2002
Sportster/Buell Model #2: Buell XB12R
Sportster/Buell Year #2: 2009
Other Motorcycle Model: Yamaha
Other Motorcycle Year: 95
Reputation: 958932
MatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond reputeMatHormell has a reputation beyond repute
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Quote:
Originally Posted by jkinkade View Post
Mat, very interesting, that screen is over my head!!
It looks to me like it might restrict air flow. can you explain how it works?
the other crossed metal plate, seems to work if 1/8th mile time in line with a 9.9 quarter.
the 1.5 inch drop via fork tubes, sounds like a positive move as in drags the lower the better.

hope you get good weather, good air quality on the last time at track for season!!

also I was looking at your Datta log, after 490 seconds the AFR goes lean is that when you backed off? but rev also high?
The screen wont restrict anything, it is used in the car industry to straighten and calm incoming air for a MAP sensor

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  #1550  
Old 24th October 2018
jkinkade jkinkade is offline
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Sportster/Buell Model: XLH 88" 2003.
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jkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud ofjkinkade has much to be proud of
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Quote:
Originally Posted by MatHormell View Post
The screen wont restrict anything, it is used in the car industry to straighten and calm incoming air for a MAP sensor

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Wow , thank's Mat that looks like it has improved atomisation.
what flow bench did you use to get that?
thank's again & good luck.
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