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New tire rule regarding excessive tire pressures
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jeff bacon



Joined: 04 Dec 2007
Posts: 1069
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Location: LOGANVILLE GA

PostPosted: Wed Nov 06, 2013 4:33 pm    Post subject: New tire rule regarding excessive tire pressures Reply with quote

It has come to the Boards attention that some karts with a spec gear ratio have had their tires over inflated to gain a little top speed advantage. This action could be potentially dangerous with both tire failure and poor kart handling due to limited contact patch. The Board has voted to disqualify anyone whose tire pressures exceeds the maximum rated tire pressure listed on the tire. And remember to allow for some tire grow due to tire heating up. If everyone has to follow this rule, then it will eliminate the advantage created by over inflating tires.
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Jeff Bacon
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dacarter_16



Joined: 24 Sep 2012
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PostPosted: Wed Nov 06, 2013 6:14 pm    Post subject: WKA gave it the ok!!!!! Reply with quote

I sure hope GSKA purchased a air gauge that is calibrated and has a certificate of authenticity!!!!! Shocked
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Alex Carter
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Jeff Sikes
Junior 2 Cycle Director


Joined: 14 Apr 2006
Posts: 618
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Location: Athens, GA

PostPosted: Wed Nov 06, 2013 6:30 pm    Post subject: Reply with quote

That will be impossible to police in a fair way. Why not just use a max circumference like in the 2 cycle kid karts. It could even be the same one or just measure with normal pressures and add 1/4 - 1/2 inch and make that it. This is the way it is tech'd in rotax and WKA 2 cycle.

Jeff
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AtlantaKarting.com



Joined: 08 Jan 2013
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PostPosted: Wed Nov 06, 2013 7:56 pm    Post subject: Reply with quote

Just check the max circumference of the tire......simple. If you are following
WKA rules.
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jeff bacon



Joined: 04 Dec 2007
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PostPosted: Wed Nov 06, 2013 8:17 pm    Post subject: Reply with quote

So NOBODY sees a problem with airing up tires twenty pounds more than the max tire specification? The Board's number one job is to try to keep our racers safe.
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Clint



Joined: 05 Apr 2009
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PostPosted: Wed Nov 06, 2013 8:41 pm    Post subject: Reply with quote

I'm assuming you are talking about the LO206 Kid Kart class. If not, disregard.

The WKA Manual Section 902.9 Tires states: Open compound. Size 10 x 4:50 or 4:60 x 5. Maximum rear tire circumference, 33.75"

We raced this class in WKA Nationals all year last year & the focus was on clutch, driver gear, rear spec gear, & max tire circumference.
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AtlantaKarting.com



Joined: 08 Jan 2013
Posts: 25
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PostPosted: Wed Nov 06, 2013 9:08 pm    Post subject: Reply with quote

Clint wrote:
I'm assuming you are talking about the LO206 Kid Kart class. If not, disregard.

The WKA Manual Section 902.9 Tires states: Open compound. Size 10 x 4:50 or 4:60 x 5. Maximum rear tire circumference, 33.75"

We raced this class in WKA Nationals all year last year & the focus was on clutch, driver gear, rear spec gear, & max tire circumference.


There you go....no need to make more un-enforceable rules. Depending on rim size it only takes about 18-20 psi to get to that 33.75", well below maximum air pressure. Even easily checked.
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dacarter_16



Joined: 24 Sep 2012
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PostPosted: Thu Nov 07, 2013 6:22 am    Post subject: Reply with quote

My tires don't have max air pressure they have 400 kta, sounds like a lot of air though!!!
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Alex Carter
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jeff bacon



Joined: 04 Dec 2007
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PostPosted: Thu Nov 07, 2013 8:44 am    Post subject: Reply with quote

Maybe 400KPA? Roughly 60 PSI.
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Jeff Bacon
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Darrin Tebbe
Out to pasture


Joined: 02 Jun 2007
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PostPosted: Thu Nov 07, 2013 10:26 am    Post subject: Reply with quote

Maybe I'm missing something, but the only class this could possibly apply to is Kid kart, and it already has a circumference rule.

DT
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