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Post by 1st1down on Jan 29, 2008 23:19:15 GMT -6
OK now we did real well this year in our Awanas race won all of our 9 races by 1/2 to 1/4 car length ....but we went to extended wheel base. which is allowed..now fellas to fine tune these cars for next years race I really cant put the weight behind the rear wheels mainly because the rear wheels are where I can not get any weight behind the wheels. do to space allowed...so should I just stay 1in... in front of rear wheels for cog???
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Post by Parrot Racing on Jan 29, 2008 23:41:54 GMT -6
You can move your com back, but depending on the track, 1" may be good. If you feel you can move it and still be stable, I would try some tungsten if you weren't using it already. You might still be able to move your com back without actually putting it behind the wheels.
Hope this helps.
Enrico
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Post by ProQuest on Jan 29, 2008 23:42:56 GMT -6
Hey 1st1down:
You still want your cog to be about 1" in front of your rear axle. With an extended wheelbase, you can even go a little bit more aggressive, say 7/8" to 3/4" depending on the type and smoothness of the track. The smoother the track the more aggressive you can go.
With regard to putting weight behind the rear axle with an extended wheelbase, there are several ways to do it. If you go to the WIRL home page and click on current cars and points, you can see pictures of several of my cars where I have placed 3/8" tungsten cylinders behind the rear axle. "ProQuest I" and "Bad Habit" are two examples. Maximum Velocity sells the cylinders. They also sell 1/4" cubes and 3/16" cubs which fit nicely behind the rear axle. It takes a little practice drilling or routing the cavity for the weights, but it can be done. I use a 3/8" Forester bit to drill the holes for the 3/8" cylinders. You can also use a 3/8" brad point drill. Measure exactly .3 inches from the rear end of the chassis to drill your hole.
Just my thoughts.
ProQuest/Steve H.
P.s., It just occurred to me that the picture that is my avatar is "ProQuest I". I don't know if it is clear enough to see, but I put one 3/8" tungsten cylinder behind the rear axle. Those cylinders weigh 1/2 oz each.
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