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  #3351  
Old 4 Weeks Ago
Tinz Tinz is offline
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Originally Posted by cycowrencher View Post
Alrighty Gentlemen let's talk about the $2,400 four year lesson that I have learned with a 700 pound Sportster package. I've had this set up where I've had about 30 degrees of timing available from 3400 RPM all the way to redline at part throttle. What I needed was about 18 degrees of timing so my current timing curve under 5700 RPM is very lazy and at the 4k that I'm leaving at, we now have between 16 and 18 degrees of timing. The bike has 516 lb of spring in it and we have approximately 60 grams of weight on it and we're 60 footing in the 1.50 to 1.55 range. I highly recommend that if you are trying to calm it down on the hit, pull some timing.....

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Nice 60’ for sure, what ignition ya using? Data gathering?


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  #3352  
Old 4 Weeks Ago
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Nice 60’ for sure, what ignition ya using? Data gathering?


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Dynatec 2000i ignition and wego wideband with rpm data collect. Red line is rpm data green is afr



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  #3353  
Old 4 Weeks Ago
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cycowrencher cycowrencher is offline
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I currently have 516 lb of spring and 56.8 grams across six arms.

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  #3354  
Old 4 Weeks Ago
mac93 mac93 is offline
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If I gotta run 500#’s of spring there’s going to be a bike for sale!
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  #3355  
Old 4 Weeks Ago
jcro61 jcro61 is offline
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If I gotta run 500#’s of spring there’s going to be a bike for sale!




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  #3356  
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If I gotta run 500#’s of spring there’s going to be a bike for sale!
Are you running 7/8 bars? If so, the moose or fly racing easy pull 3 is the clutch perch and lever you want. I have the cable in the 2nd slot and that clutch feels like a +10 barnett diaphram... I had a custom cable made by barnett and it was 70ish shipped. The buell s3t cable will also work in a pinch...

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  #3357  
Old 4 Weeks Ago
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Currently my bike weighs 465lbs. I have 516lbs of spring in clutch.. Thats roughly bike wt+ (10% of bike wt)....

9 passes over 2 race days netted 60 fts 1.48- 1.55. Race e.t.s were 10.78- 10.82 with a random 10.687 yesterday when the air went from 1300ft to 700ft in an hour.....

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Last edited by cycowrencher; 4 Weeks Ago at 11:33..
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  #3358  
Old 4 Weeks Ago
speedyrette speedyrette is offline
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Six hour road trip to the last event of the year, rain delay today, full day tomorrow!


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How did it go?
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  #3359  
Old 4 Weeks Ago
Tinz Tinz is offline
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Originally Posted by cycowrencher View Post
Currently my bike weighs 465lbs. I have 516lbs of spring in clutch.. Thats roughly bike wt+ (10% of bike wt)....

9 passes over 2 race days netted 60 fts 1.48- 1.55. Race e.t.s were 10.78- 10.82 with a random 10.687 yesterday when the air went from 1300ft to 700ft in an hour.....

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Seems you have your combo sorted out, nice numbers.


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  #3360  
Old 4 Weeks Ago
Tinz Tinz is offline
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How did it go?

Out in the first round because I was in the right lane and can’t turn my head left enough to see where my competitor is…he was far back, went 11.35 on a 11.45 dial in. Breakout.


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