GSXR 750 Shifter Kart o_O

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NoRevLimit

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I am looking at building a decent shifter kart and I was wondering if there are some frames out there that are pretty much setup to handle a 750cc engine? I have a cheap connection for a complete 06 750cc GSXR setup and I am stuck on the frame part. I have been looking for a decent DIY frame design but I have not been able to find one that fits my liking. I have a welder and tools and I would like to build the kart myself but to get my SK to fit shifter kart parts on the market is what I am affraid of. :auto:

Any Ideas to where I can get some GOOD plans??

Here is what style I like




THIS is what I am going for!
http://www.youtube.com/watch?v=KR9Qt6FFSu8&feature=results_main&playnext=1&list=PLCDC4B7250C9AD376
 
kendelrk

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a regular kart is like yerf dog or manco type frames. now if you look up things such as margay and such, thats a shifter kart
 
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kendelrk said:
a regular kart is like yerf dog or manco type frames. now if you look up things such as margay and such, thats a shifter kart
Click to expand...

These are somewhat local to me and at a steal ($1,000 for both!) they could be mine but $ is short till I sell some of my things..lol



 
anderkart

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NoRevLimit said:
I am trying to figure out what the difference between a regular Go kart chassis and a shifter kart chassis is. They seem to look the same just the "shifter" part is on one and not the other.. :huh:
Click to expand...

That first frame pic you posted (with the measurements) is my 1999 Beisse B3. It's got a 40mm.-diameter axle and was originally intended to have a 100cc. 2-cycle (non-shifter) engine, the correct term for it is a Sprintkart.

But that exact same frame was also sold for use as a 125cc. shifterkart. The only difference would have been installing a slightly larger diameter rear axle (50mm.) and adding dual master cylinders and front brakes, plus the clutch/shift-levers and linkages.

Lots of guys have lengthened Sprint/Shifterkarts like this and installed huge engines like you 750cc, but you know what? A Shifterkart with a Honda CR125 motocross engine will kick their butt on most kart racetracks. Yeah a 750 would win on a drag strip, but with all that weight and lengthening the frame they never handle nearly as well as those 125 Shifterkarts.

Before you instal your 750, watch a bunch of 125 shifterkart videos on youtube. I think you'll agree that those are faster that most kart riders can even handle. No offence intended and do what you want, but I've been racing karts for years and I think a 750 on a racekart is just plain silly.
 
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anderkart said:
That first frame pic you posted (with the measurements) is my 1999 Beisse B3. It's got a 40mm.-diameter axle and was originally intended to have a 100cc. 2-cycle (non-shifter) engine, the correct term for it is a Sprintkart.

But that exact same frame was also sold for use as a 125cc. shifterkart. The only difference would have been installing a slightly larger diameter rear axle (50mm.) and adding dual master cylinders and front brakes, plus the clutch/shift-levers and linkages.

Lots of guys have lengthened Sprint/Shifterkarts like this and installed huge engines like you 750cc, but you know what? A Shifterkart with a Honda CR125 motocross engine will kick their butt on most kart racetracks. Yeah a 750 would win on a drag strip, but with all that weight and lengthening the frame they never handle nearly as well as those 125 Shifterkarts.

Before you instal your 750, watch a bunch of 125 shifterkart videos on youtube. I think you'll agree that those are faster that most kart riders can even handle. No offence intended and do what you want, but I've been racing karts for years and I think a 750 on a racekart is just plain silly.
Click to expand...

The CR125 would be ideal if I was going ICC but I am going to do it to just do it and not intending to "race" with the other shifters. Just racing the planes on the air strip.. lol ;)
 
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What is the common O.D. and I.D. of the tubing used for making the most popular karts? I am trying to figure this size out so I know if I have to get this or this to bend my tubes. I am going to use chromoly I think to build the frames so it may be easier/harder to bend..

Thanks for all of the help guys!
 
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From what the plans say that J.concepcion posted, it is ~1" O.D. and ~1/8" thick. Seems it would be sufficient especially with proper bracing. I think it would be ideal size and just the proper amount of flexability.

I don't want it too rigid and heavy that it will not handle in turns. I hope I can make it to where it will take turns as if it were on rails... HIGH hopes.. lol

I just picked up the tubing notcher from HF so I will be putting it to the test shortly (This Tool)
 
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