drag bike air shifter malfunction

[UPdragracer]

100% at the track last night did not miss a shift However i found a neutral between 4th and 5th gear ? and the bike started hopping ?




thanks for all the help ant

p.s. I am going to install a walker on the front of my bike to help me keep it up lol

glad it is shifting better !!

[rapidray]

By hopping, what do you mean? Is this a wheelie bar bike? If so, LOWER the bars! Ray.

[anthonygs1000]

no bar any more. I have a Shinko 190 on the rear it was like a bucking bronco back end was bouncing. I though I broke something then the next run shifted and ran fine ?


thanks ant

[rapidray]

Is the front end shortened or strapped down? Ray.

[blowerbike]

wheel hop= no shifty.

[anthonygs1000]

Is the front end shortened or strapped down? Ray.

no sir stock 1991 gsxr 1100 forks raked 5 1/2

[UPdragracer]

whats your rear tire pressure ? also I assume you still have it hardtail no rear shocks as well . I never went lower than 22 lbs of air on a D.O.T. tire and hardtail . .

[anthonygs1000]

you may b on to something I had 15 psi in the rear tire I will try to increase the pressure


thanks ant

[rapidray]

Also, & VERY important, is you should NOT be running it as a hardtail with a street tire or no wheelie bar. If you get the correct shock setup on the rear the bike will be considerably quicker & easier to ride than with struts! Struts are designed to be used with a wheelie bar so you can just throw the clutch lever. With a street tire & no bar you can't do this & go as quick as with a good shock setup. Lastly, the rear tire pressure is too low. Ray.

[anthonygs1000]

Also, & VERY important, is you should NOT be running it as a hardtail with a street tire or no wheelie bar. If you get the correct shock setup on the rear the bike will be considerably quicker & easier to ride than with struts! Struts are designed to be used with a wheelie bar so you can just throw the clutch lever. With a street tire & no bar you can't do this & go as quick as with a good shock setup. Lastly, the rear tire pressure is too low. Ray.

hey ray

I am throwing the clutch at 85 hundred rpms and the tire is spinning about 10 feet then it is pulling the wheel for about another 25 feet 4in high till i shift and my 60 ft times are a 1.4? the other problem is the bike is coming out of the grove I launch right lane left grove then the bike is pulling right to the middle of the track I have to measure axle to axle this week to see if my adjustment is off

work in progress ANT

[anthonygs1000]

thanks for the 22lbs in the tire advice but no thanks the bike blitzed the tire 100 plus feet lol it was sure fun but not productive I set the tire to 15 lbs and it spun again then down to 10lbs then a slight spin at 85hun out of the hole and a wheel stand for 60 feet six inches high. the bright side no shifting eras i will be leaning the jets next weekend two sizes to try to bring up my MPH I fattened them up last fall when the temperature was in the 50's at night

thanks ant

[stetracer]

There was NO hostility! I like to race! I'll race ANYONE that feels up to it! I just know that when someone removes their wheelie bars they are going to be LESS consistent & I want their money! Don't refer to them as "training" wheels & you won't get called out by me. Want to race? My bike only has a street motor in it, with STOCK cams! Ray.
P.S. I'm 49 & have been doing this for more than 30 years & am here to meet other GS people & have fun too! Want to race?

I dont know about that Ray my GS1150 with no bar and a street tire 62'' w/b will run the same # every pass unless the temp or humidty changes.
Oh did I mention that I use a slider on it. It is deadly consistant

[anthonygs1000]

I dont know about that Ray my GS1150 with no bar and a street tire 62'' w/b will run the same # every pass unless the temp or humidty changes.
Oh did I mention that I use a slider on it. It is deadly consistant

what is the ET in the 1/4 ? and what is the ET in the 1/8 I would love to know Because i am building a 1150 for the 1/8

thanks ant

[anthonygs1000]

Hello

where did the 1150 guy go ??????????????????

[anthonygs1000]

back in business

last night was the best 1/8 i have run with this bike shifted like butter - I took the velocity stacks off and went from a 150 to a 140 main jet. during the heat of the day the bike was running 6.50's all day then the coolness of the night when the humidity went away the bike did a 6.37 at 106.6 MPH so this is telling me to go with a 138.5 main jet and try it when its hot out


ant