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Author Topic: Finding three tenths of a louzy second.  (Read 1861 times)

Offline teazer

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Re: Finding three tenths of a louzy second.
« Reply #10 on: Aug 24, 2017, 23:12:50 »
I'd think about shifting the torque curve to allow for higher RPM shifts, but I see that Brocks have peak torque at the same 8k revs and are managing better times with 100 less HP.

Maybe the answer is that you have too much power to get off the line hard enough. I wonder how it would run with less power......

And a lighter rider would really help too I guess. :-(

Offline 1fasgsxr

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Re: Finding three tenths of a louzy second.
« Reply #11 on: Aug 25, 2017, 13:23:03 »
My swb 02 GSXR 1k ran 9.40's all day with decent 60ft times.  Stock motor !!  Something don't seem right. That thing should be flying. I'm sure me weighing only 150lbs helps too but..
« Last Edit: Aug 25, 2017, 13:32:41 by 1fasgsxr »

Offline Sonreir

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Re: Finding three tenths of a louzy second.
« Reply #12 on: Aug 25, 2017, 13:31:33 »
You running total loss? (Temporarily) removing the charging system will allow the bike to rev faster and the alternator usually robs a little power, too.
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Offline 1fasgsxr

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Re: Finding three tenths of a louzy second.
« Reply #13 on: Aug 25, 2017, 13:31:40 »
Is it spinning any past the 60ft ?  Clutch slipping?

Offline 4eyes

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Re: Finding three tenths of a louzy second.
« Reply #14 on: Aug 26, 2017, 14:29:49 »
It looks to me like there is no correlation between your reaction times and your 60' times, or E.T. for that matter.
That leads me to think there is something screwy around the launch, maybe clutch slippage.


p.s. Nice reaction times. (almost all anyway)   ;)
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Offline irk miller

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Re: Finding three tenths of a louzy second.
« Reply #15 on: Aug 26, 2017, 14:44:31 »
Nothing matters with the motor if it isn't getting to the ground.  What are the options for tire compounds with bikes?  My experience drag racing is with cars.  We ran a harder compound on our Bugs and softer compounds on our Roadrunners. We also gained a couple tenths on the Bug with a shorter shift, after everything else was dialed in.  We ran a shifter that could be adjusted from 4" down to 1".  The Roadunners were always autos, so the stall was a bigger factor in hooking up off the start.  One thing with tires is that sometimes a controlled spin is a good thing.  A dead hook can shake or cause the motor to bog. 

Offline Scooter trash

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Re: Finding three tenths of a louzy second.
« Reply #16 on: Aug 26, 2017, 18:41:41 »
With the two stage I raised the static pressure .025" x 5, the added oil pressure didn't do anything...maybe. There bikes with wheelie bars and slicks just making us look parked until the turbo get wound up at 185,000 rpms

When we run a 41 tooth rear the top speed increases to 157 mph, but the 60' goes in the toilet.
« Last Edit: Aug 26, 2017, 18:48:52 by Scooter trash »
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Offline 1fasgsxr

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Re: Finding three tenths of a louzy second.
« Reply #17 on: Aug 26, 2017, 22:05:59 »
What brand of locker clutch you using?

Offline Scooter trash

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Re: Finding three tenths of a louzy second.
« Reply #18 on: Aug 27, 2017, 00:00:07 »
MTC two stage, with Muzzy performance springs shimmed at .150"
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Offline 1fasgsxr

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Re: Finding three tenths of a louzy second.
« Reply #19 on: Aug 28, 2017, 10:07:20 »
Are you running a two step ?  I cant imagine launching that high in the revs is needed. What is your boost at launch? Are you running a boost controller?