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Author Topic:   pinion angle
iowa_dirt_track_girl
Member
posted July 28, 2003 11:49 AM
What would be the best pinion angle to run on dirt with a 2850# car running multiple tracks this is with a 9 inch and non floater rearend in the imca hobby stock division and what i mean by pinoin angle is the angle that they do when they jig the rear end for forward bite not anything to do with the gear it self
Thank you for your help

[This message has been edited by iowa_dirt_track_girl (edited July 28, 2003).]

[This message has been edited by iowa_dirt_track_girl (edited July 28, 2003).]

rico 08
Member
posted July 28, 2003 02:00 PM
8 Degrees down on a metric.


gahainsey
Member
posted July 28, 2003 02:24 PM
Pinion angle has no effect on forward bite other than by accident thru increase or reduction of driveshaft binding. The angles of the suspension arms are what affect the amount of bite. More precisely, the location of the instant center of the rear suspension is what influences how the suspension plants (or unplants) the rear tires. The counter action of the rear axles twist thru the IC is what lifts the car and plants the tires. (or squats the car and unplants the tires)


race it
Member
posted July 28, 2003 09:50 PM
ok i was wondering what instant center was thank you


OppendikeRacing29
Member
posted August 04, 2003 05:42 PM
6-7 degrees down on a hobby stock, prolly not getting as much twisting as say a street stock would


gould
Member
posted August 04, 2003 08:49 PM
basically on instant center you would draw straight lines off your trailing arms untill they intersect. that point is the instant center. if you move that point closer to the rearend you will get more forward bite. have the guy that jigs your rearend set the upper mounts a little higher than stock. that will put more angle on the arms for forward bite.

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