TheOtherNut

Could anybody tell me what the correct gearing/rollout would be for a sedan with 27Turn motor with Foam tires on Carpet track? Were all Rubber tires here in NORCAL, want to give foam a try....Thanks....

CarbonJoe

Which 27 turn motor?

For a CO27, try 1.08 (inches). For a Monster Stock, try 1.00. For an Orion Core, try 1.13. Those were popular rollouts at the Halloween Classic and the Cleveland Indoor Champs.

TheOtherNut

Thanks Carbon Joe, Could U please exsplain to how figure out the rollout? Is it spur x pinion divided by internal ratio X tire size divided by PIE (3.14) ? I'm lost, any help would be great....Thanks

CarbonJoe

Download the XRAY Setup book here: (it is a PDF file zipped up) http://www.teamxray.com/teamxray/sho...p?file_id=2525

Check out the info starting at page 40. All your questions about rollout will be answered. Of course, substitute your actual internal drive ratio for the XRAY 1.7 ratio (34 and 20 tooth pulleys).

HTH!