nate
Newbie
Posts: 2
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Post by nate on Dec 12, 2010 22:59:01 GMT -6
I'm working up a design for an upcoming race. Just found out the church AWANA group leaders do an open class for the adults after the kids have their fun, and I'm pretty excited. ;D
Anyway, I'm looking at the accepted standard 1.5 to .75 inch COG foreword of the rear axle on the X axis. Great, but most cars tend to be as flat and low to the ground as possible. Wouldn't it further increase the distance a weight fell over the incline if we put it a the top of the 3" height limit? Or does this destabilize the car too much?
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Post by 5KidsRacing on Dec 13, 2010 8:46:23 GMT -6
short answer is no... with the higher the weight as you tip your car forward and place it on the track the weight moves forward which equals a less distance traveled. And yes, it also creates a less stable car.
Place your weight low as possible without hitting the center guide and shoot for a 3/4" COG.
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Art Racing
Pine Head
Life's a hole dig it!
Posts: 57
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Post by Art Racing on Dec 13, 2010 19:22:25 GMT -6
fivekids is right stay around 3/4 cog and get the weight low that way your car will be stable shave the front an 1/8 and rail ride and you should be good to go.
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nate
Newbie
Posts: 2
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Post by nate on Dec 14, 2010 22:36:55 GMT -6
Okay, that works. Thanks for the answers.
I do have another question: High clearance or low clearance (given equal vertical COGs)?
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Post by 5KidsRacing on Dec 15, 2010 11:10:38 GMT -6
Nate, I don't exactly know what you mean but...
Keep the weight compact and low... you don't need to have it hanging way down to have a fast car. Too low and it scrapes the center guide so it really isn't worth the risk unless you can test on the actual track or have one.
Focus on wheel, axle prep & railrunning....
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