Front toe per turn?
#1
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Front toe per turn?
I would like to know what the change in front toe (mm or angle) per one turn of the steering rods are. On my race car, I have made a tape “flag” on the steering rods so that I easily can turn half laps. But over the winter I lost my notes on how much change in toe one turn gives. Anyone who knows?
Thanks!
Thanks!
#7
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the answer is:
measure the perpendicular distance "d" from the axle centerline to the steering rod pivot (perpendicular to the axle and kingpin both--NOT the length of the arm at a funky angle)
measure the thread pitch "p" (distance between adjacent thread peaks)
take the arctan of p/d to get the angle change per full turn for one side of the car.
example (NOT MEASURED):
d is 200 mm
p is 1.25 mm
angle = arctan(1.25/200)
angle = 0.358 degrees.
measure the perpendicular distance "d" from the axle centerline to the steering rod pivot (perpendicular to the axle and kingpin both--NOT the length of the arm at a funky angle)
measure the thread pitch "p" (distance between adjacent thread peaks)
take the arctan of p/d to get the angle change per full turn for one side of the car.
example (NOT MEASURED):
d is 200 mm
p is 1.25 mm
angle = arctan(1.25/200)
angle = 0.358 degrees.
#10
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Location: Norrahammar, Sweden
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Maybe I should have returned to check this thread sooner...
Yes, I have found the same. Between 1mm and 1,5mm, according to the threads at M.net.
First race weekend is finished and the car is back in the garage again. On the 11th, I'll go back to my sponsor for an alignment again. I'll check then as the car is hooked up to the machine how much toe 1/4lap gives me and post back here.
To be continued...
First race weekend is finished and the car is back in the garage again. On the 11th, I'll go back to my sponsor for an alignment again. I'll check then as the car is hooked up to the machine how much toe 1/4lap gives me and post back here.
To be continued...
#13
(I measure my toe with toe plates, so I don't know the degree changes.)
Always wondered if anyone took note of the same/similar.
#14
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Seams as my research is a bit redundant now, but as promised: I'm back from the sponsor with a fresh racing alignment. My cars ride height places the lower A-arms just horisontal. I found that 1/4 turns equals 0,1degrees, or 1,3mm toe per side.
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