TAG Setup for Road Racing

Bob Wimmer · Posted: Tue Sep 04, 2012 9:08 am Post subject: TAG Setup for Road Racing

I've got a Kosmic T7 32mm chassis and am looking for the caster, camber, toe and cross settings folks typically use for road racing. Not looking for exact numbers, but a general range.

Thanks
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Jim McMahon · Posted: Tue Sep 04, 2012 9:21 am Post subject:

Start with your typical sprint setup. Tune from there. Honestly. It's going to depend on the specific track you are at anyway, surface composition etc etc.
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Peter Zambos · Posted: Tue Sep 04, 2012 12:42 pm Post subject:

Agreed. There is very little difference between our sprint and road race set ups.

al nunley · Joined: 13 Nov 2006 Posts: 3032

Your sprint setup will be good, as said, but I would change a few things.
A lot more air pressure in the tires.
As narrow as you can get.
Smaller, harder tires.
Anything you can do to improve the airo dynamics.
Maybe sounds strange, but it works. A big road race course will not have any turns anywhere near a sprint track. That, and the speeds on the strights, are the reasons for the setup.
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Bob Wilson · Posted: Wed Sep 05, 2012 7:01 am Post subject:

Clark Gaynor · Posted: Wed Sep 05, 2012 7:37 am Post subject:

Agreed, go with your sprint set-up, other then the gear of course. DON'T do the narrow, skinny/hard tire thing!! As Bob Wilson said-- it doesn't work. The things draft so well, you're not going to get away from anybody on the straights, but you really need the thing to handle.

Just curious, are you coming to Summit Point this weekend? I just noticed you're from Maryland.
Clark Sr.

Bob Wimmer · Posted: Wed Sep 05, 2012 10:41 am Post subject:

That's the plan. The boys aren't racing, so it time for the old man to have some fun!
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Animal Sprint & Enduro
Leopard Enduro

joseph hollinger · Posted: Wed Sep 05, 2012 12:01 pm Post subject:

al nunley · Joined: 13 Nov 2006 Posts: 3032

Well, I’ve been there, done that too, and it did work quite well. Can't speak about you, just me.
But be safe, run what everybody else is running, you should be able to keep up with them that way.
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If the data does not support the theory, get a new theory. (Al Nunley)
All else being equal; Compression is the Holy Grail.
45 years, in and around karting

joseph hollinger · Posted: Wed Sep 05, 2012 12:41 pm Post subject:

Bob Wilson · Posted: Wed Sep 05, 2012 2:07 pm Post subject:

The narrow set-up data no longer supports your theory, it's time to embrace a new theory.
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SPS Racing

Chris Hegar · Posted: Wed Sep 05, 2012 2:47 pm Post subject:

The narrow setup was the trick back in the time of 100cc piston port classes but the newer higher HP tag motor package combined with a wider Euro chassis, modern tire compound and side wall is now the ticket. Over the ages we have traded in narrow American produced karts that needed narrow and high pressure tire to build heat to what we see today in the evolution. In the 80's and 90's that is the way it was, remember the Emmick Top Gun situp chassis... that was the hot ticket on some sweet SL3 Dunlops.

I'd go wide sir, I like em wide. Wink

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Bob Wimmer · Posted: Wed Sep 05, 2012 2:56 pm Post subject:

With such little body work on a tag, I can't believe track width makes much of a difference. What about caster and camber? Do reducing those without compromising cornering speed help? And I know that a tight kart is a slow kart.

Thanks
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Wild Wimmer Racing
Animal Sprint & Enduro
Leopard Enduro

joseph hollinger · Posted: Wed Sep 05, 2012 3:12 pm Post subject:

Bob Wilson · Posted: Wed Sep 05, 2012 4:06 pm Post subject:

Trust me, 55" inches on the rear, MG Yellows or equivalent compound of the manufacturer of your choice with a starting point of 11 pounds. The camber is your king pin inclination. More camber adds stabilization to your steering at high speeds. Less camber gives a quicker, more darty (I know that's not a real word) steering. We tried running our Rotax on the big tracks narrow and it was a true handful, almost un-drivable, in the corners. The wider we went, the faster we went. Sure enough, gearing was the only change we were making on the transition from a sprint race to a road race. Follow your gut, you have to drive it. Set it up how you want to drive it. This has worked for us.
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Bob Wilson
SPS Racing