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Old 08-18-2010, 05:21 AM   #1
Need2Bfaster
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Default Cry 31-s2

Looking for a baseline setup for a 2010 CRY31-S2. It will be running as a stock-moto shifter. I'm 5'9" @ 145 lbs. This kart will be used in the Pacific Northwest and our spec tire is the Maxxis HG3. I believe the class weight is 385lbs. I'll probably try and reuse my Tillet T-9 seat of I can. Any info you can provide would be great. If it's already here and I missed it can you point me in the right direction. Thanks.

Last edited by Need2Bfaster; 08-18-2010 at 05:23 AM.
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Old 08-20-2010, 10:40 AM   #2
Chris Lobaugh
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I am not familiar with that tire...could you tell me a bit more about it or what it is comparable to? I assume that it is hard tire and similar to a YHC ("square" edges and flat/straight side walls as opposed to a YKC which is more rounded) and relatively hard side wall.

If that is the case I would begin with a 1040x50x2-F axle up, side rail in, two seat stays on the left and one on the right, 95mm hubs set at 55", short front bar, front hubs at two thick spacers wide, .5 degree caster in, 2mm toe out.

mount the seat 125 cm from the front rail to the top of the back of the seat with the bottom of the seat flush with the bottom of the frame rails
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Old 08-20-2010, 08:22 PM   #3
Need2Bfaster
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I think it's probably closer to the YKC with rounded sidewalls and grip wise they are closer to an MG Yellow than a Bridgestone but don't have as stiff a sidewall as the MG.
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Old 08-23-2010, 09:19 AM   #4
Marc Miller
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I would start with the baseline Chris gave above. I am familiar with the HG3 (blue decal right?) and it doesn't have as much grip as the MG Yellow.... so it might be closer characteristics to the Bridgestone or even MoJo D2.

If you provide your set-up info and seat measurements, then provide some testing feedback - we can likely be more precise in recommending set-up changes.

Good luck!
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Old 08-23-2010, 05:41 PM   #5
Need2Bfaster
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Great, thanks guys. I've never used a Bridgestone or MG tire. I was just going off of what others have told me. I have used the Mojo's and the Maxxis has more grip. I think Chris has provided the info I needed. I'll try it out. Keep up the great work and support. This website has been invaluable to me as a new guy to karting. My first kart was a Birel by chance... My second kart is a Birel because of this type of support.
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Old 09-30-2010, 01:24 PM   #6
Need2Bfaster
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Ok, I tried the setup Chris recommended and it was generally pretty good but the kart is kinda loose in the rear from mid corner out. Not sure if I need to work on the front or the rear? Any more suggestions on getting a little more rear grip on the exit of the corners? Seems to be the same regardless of whether it's a fast or slow corner. Thanks.

Last edited by Need2Bfaster; 09-30-2010 at 02:31 PM.
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Old 10-03-2010, 04:57 PM   #7
Need2Bfaster
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Oops, nevermind. I showed up for the race on Saturday and had tons of grip. The kart was awesome. Must have been the track. Hard to believe the track can change so much with just a little rubber on it. Thanks anyways. :-)
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