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Old 03-29-2006, 07:06 PM
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Originally Posted by seaball
interesting sedan conversion. how does the increased dog bone angle caused by the ultralow diff height affect performance? the trend lately (rdx, losi, xray) has been to raise the diffs to at, or above, the axle level for better drive efficiency and more consistent suspension compliance over a range of drive torques. other than an overall lower cg, what are the advantages of a lowered driveline?

- rich collins -
Thanks for the question Rich ...

First of all and for most, this is a shaft drive designed car and it has many many differences from a belt car and the ways of friction and torque! Its hard to compare the handling charactoristics from a belt drive car to a shaft drive car... and also from the different chassis layouts, weight balances, and positioning of components...

The Idea behind the lowered drive line is to keep the cars weight as low as possible and to keep the CG lower to the racing surface (more overall traction). Not only did we lower the drive line but we also have lowered the arm mounts about .060 from stock height (wich is also adjustable to change CG). The lowered drive line doesnt affect the dogbone angles in any way, the bones are level to slightly angled up out to the wheel when proper ride height (4.5-5mm) is set! When running on med-high bite smooth traction surface you want to run as little droop as possible as to not allow the chassis to roll in the corners.. We designed this car for smooth surfaces. It has been tested outdoor also after adjusting the arm mounts .030 higher than stock to raise the CG the car was just as smooth as it is indoor and with the dog bones angled up out to the wheel it had no affect on the performance. The advantages are to keep weight and CG low as possible.

The XLR8 that we are talking about is very close to production. The aluminum is all in house and bagged to sell, just waiting on getting the carbon fibre chassis components cut. Stay tooned.. Pictures will be added to the website very soon..

Also this weekend Tim Brink ran his XLR8 in 19T at our club here in West Mi, and he was the fastest car there, he raced over 5 Xray T2's and some others, but no doubt the fastest car there. Took 2nd after stuffing a board...Traction was med-high bite ozite..

Thanks, Damon

Last edited by Diggity; 03-30-2006 at 12:04 AM.
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