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How quick is your GS

  • Thread starter Thread starter Anonymous
  • Start date Start date
Lithium racing said:
Ever go to the Valley, Skip?

you may have seen me up there.
Click to expand...
Scan1.jpg
does this look familiar? do you know Ralph kelenbach?
 
how fast?

how fast?

Oh yea....my GS is so fast that when I return from a 12 minute ride, I am .738 years younger, just like Einstien said... :lol:
So there,
Mark Harrop
 
Well I finally experienced one of those power wheelie's you guys keep talking about , conditions must have been just right. I was cruising along about 10 mph in the parking lot at work, then I nailed it and feathered the clutch. The front came up about a foot, suprised the hell out of me but damn it felt good.
Doze :twisted: .
 
skip[ said:
stetracer,
guilty as charged! I was spraying the bike and the kit I use is very small . Its the old style (not fogger nozzels) and the jets are only size size 20 and 22. I wish I had your swing arm and tire because I normally cant spray till 3rd gear. In that pass that I posted, I was desperate to beat a friend of mine and srayed second gear and for some reason I cant explain, it stuck. Normally when I spray second gear It either smokes the rear tire or snap wheelies and I end up having to change my underwear. What are you runing for motor mods and what was your rider/bike weight combo? Mine was 750lbs. On the motor only the best et was10.30@ 136
Click to expand...

Skip, was reading this thread....and was curious:

How much HP can one get without changing the swingarm? What I mean is...If you were to just take that bike and make no structural modifications (does not include carbs, exhaust, etc), how much horsepower could you get? Is there a limit to what the engine can handle?

Thanks!

Rudi
 
Rudi said:
skip[ said:
stetracer,
guilty as charged! I was spraying the bike and the kit I use is very small . Its the old style (not fogger nozzels) and the jets are only size size 20 and 22. I wish I had your swing arm and tire because I normally cant spray till 3rd gear. In that pass that I posted, I was desperate to beat a friend of mine and srayed second gear and for some reason I cant explain, it stuck. Normally when I spray second gear It either smokes the rear tire or snap wheelies and I end up having to change my underwear. What are you runing for motor mods and what was your rider/bike weight combo? Mine was 750lbs. On the motor only the best et was10.30@ 136
Click to expand...

Skip, was reading this thread....and was curious:

How much HP can one get without changing the swingarm? What I mean is...If you were to just take that bike and make no structural modifications (does not include carbs, exhaust, etc), how much horsepower could you get? Is there a limit to what the engine can handle?

Thanks!

Rudi
Click to expand...
i have seen 200 hp ( mine is just about that with the nitrous)bikes with stock chassies but what i have found in my situation is if you cant get it to the ground it does you no good,unless you want to just run for top speed . if you over power your frame you will get some flexing and twisting and it will feel like you are riding a sponge. When i use the spray im on the verge of flexing my frame . Without my steering stabilizer my bike wobbles if i use the spray, and it wont if I dont use it (so somthing is flexing somewere.) with the steering stabilizer it goes pretty straight .
 
I think I know Ralph, He is the KZ nut, correct?
They bought a KZ from my buddy last spring.
I think I have seen you up there. When I go up I'm usually hanging with Bullet Bob, Mike Sweeny, those lunatics.

I bet your wobbling problem would be helped with a outboard bearing support.that is a major flex area in a stock chassis. It has to tie into the swingarm pivot to be effective.

length is a limiting factor in E.T., but the rider is the main limit. there are guys in the 8.50s on the 60" pro sportbike class. I think a stock GS is around 58", about the same as a Hayabusa. When mildly modded(lowered, pipe etc) and ridden by an exceptional pilot, these bikes will run in the 9.2s @150 with about 170 RWHP. aerodynamics play a role in the trap speed.

Stock length GSs can run WELL into the 8s, in fact they were outlawed from Pro sportbike to give the modern bikes a chance, GSs seriously dominate outlaw pro street.
 
Lithium racing said:
I think I know Ralph, He is the KZ nut, correct?
They bought a KZ from my buddy last spring.
I think I have seen you up there. When I go up I'm usually hanging with Bullet Bob, Mike Sweeny, those lunatics.

I bet your wobbling problem would be helped with a outboard bearing support.that is a major flex area in a stock chassis. It has to tie into the swingarm pivot to be effective.

length is a limiting factor in E.T., but the rider is the main limit. there are guys in the 8.50s on the 60" pro sportbike class. I think a stock GS is around 58", about the same as a Hayabusa. When mildly modded(lowered, pipe etc) and ridden by an exceptional pilot, these bikes will run in the 9.2s @150 with about 170 RWHP. aerodynamics play a role in the trap speed.

Stock length GSs can run WELL into the 8s, in fact they were outlawed from Pro sportbike to give the modern bikes a chance, GSs seriously dominate outlaw pro street.
Click to expand...
ralph used to run a gs (yellow i believe) it was the only 8 second small tire bike up there the last time i went ] I think he has a big tire now. His wife races an 1967 chev malibu 9.50 car i think . I have not been up there in almost four years i stopped when it was time for the rebuild and have not been back but plan on it this summer. with my stock 130 tire (tiny) i ran a 9.97 @ 149.7 so if what you say was true, my bike( if I was better) would run 9:20? I didnt think i was that bad but maybe I am :oops: :oops: :oops:
 
for one thing, you dont weigh 120-130 pounds do you?
that makes a HUGE difference, not just power to weight but high CG makes the bike wheelie prone. you may also be having traction problems.you could have your stock rear wheel widened by Kosman or put on a set of modern GSXR wheels.

how long is your bike?

what do you 60'?
 
Lithium racing said:
for one thing, you dont weigh 120-130 pounds do you?
that makes a HUGE difference, not just power to weight but high CG makes the bike wheelie prone. you may also be having traction problems.you could have your stock rear wheel widened by Kosman or put on a set of modern GSXR wheels.

how long is your bike?

what do you 60'?
Click to expand...
bike is stock wheelbase,( 60" or 61") stock swingarm, my best 60 ft was 1.58 but i average 1.70 and i never spray till third. I weigh 195 in the leathers and boots wich makes rider bike combo way up there at 750 lbs.
 
a progressive box would make an unbelieveable difference. you coukd get into the spray in 2nd gear when you could use some power instead of having to wait for 3rd for the bike to be controllable.

yeah a good little rider would probably go .40s easy. Probably quicker
 
I have finally got into the big bad world of drag racing. So far I've got an 8.6 on the 1/8 mile @ 83mph. I figure the bike/rider weight is about 800lbs. I'm addicted to it now, and will be going back with some gearing changes, so we'll see.
 
lhanscom said:
I have finally got into the big bad world of drag racing. So far I've got an 8.6 on the 1/8 mile @ 83mph. I figure the bike/rider weight is about 800lbs. I'm addicted to it now, and will be going back with some gearing changes, so we'll see.
Click to expand...
from your p.m. you sent me I can tell you that your 60 ft time will fall quickly. also were you leaving on the last yellow?
 
I was leaving on the last yellow. I was having a hard time finding that sweet spot where you don't quite wheelie off the line, but have full power going forward. I need to try that rachet strap trick to help on that. What is a good 60ft time to shoot for anyway? I figured with my weight, and the fact that I'm running a 700 instead of an 1150 2 sec may be all I would get.
 
the 60 ft time is usually were you are slipping your clutch. you will find that the point were you have the cluctch engaged and have stopped slipping it is not that far from 60ft.so as you get more rpm and and less wheelie and practise the 60 ft will fall. it always falls as you perfect your launch. on my kz 650 i was doing 1.80 60fts on the 1150 not that much better , a best of 1.58 and an average of 1.70 my first day on the 650 I was in the 2 sec range and the first day on the 1150 i was 1.90 your times will fall.
 
That sounds very promising, now for the fun part, practicing. :twisted:
 
Don't know my 1/4 or 1/8 times on the 77 gs550 but its fast enough so far to dust a new BMW M3, Cobra Stang, A few Benzos and a 928. I like to dust the $$$ rides......I felt like a rock star with my 51 hp 8) idling down.........
 
So I went to the 1/8 mile again on Thursday. This time I dropped my sprocket to a 13 tooth up front. I found that my times didn't really change a whole lot. By the end of the day I was running in the 8.5-8.6 area, about a 1/10th of a second faster then my previous round with a 14 tooth sprocket. I think the 1/10th had more to do with practice then gearing though. I was able to get to the end of 3rd as I crossed the line, instead of just having to shift to 3rd before crossing. Shouldn't the gearing have made a bigger difference?
 
Rule of thumb is if you have the HP to pull the higher gear do so. If you really get into drag racing heavy always make sure in the quarter you go through the traps at redline in 5th gear. By doing so you stay at maximum rpm and hp through the run longer.
 
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