Rotation
02-16-2004, 02:18 AM
#1
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Rotation
Cruise down the highway. Car tracks straight. Floor it. Car tries, ever so slightly, to go right.
Hallucination?
Bug? (Engine mounts?)
Or undocumented feature? (I seem to recall that the P-51 Mustang, like my R-100S, made tighter turns to the right under throttle because of the engine's heavy parts' CCW rotation.)
Do Aussie 928s try to go left when you floor it?
Thanks,
Mark.
Hallucination?
Bug? (Engine mounts?)
Or undocumented feature? (I seem to recall that the P-51 Mustang, like my R-100S, made tighter turns to the right under throttle because of the engine's heavy parts' CCW rotation.)
Do Aussie 928s try to go left when you floor it?
Thanks,
Mark.
02-16-2004, 03:55 AM
#3
Drifting
it sounds like the tracking/ride height. when you floor it the rear suspension loads up and front unloads, a small variation in either tracking or ride height at one corner will show up as the geometry alters - away from the level/stable settings you had it ajusted to.
could be road camber, but not engine mounts!
could be road camber, but not engine mounts!
02-16-2004, 07:40 AM
#4
Rennlist Member
Small left to right camber/castor differences can also do this (with the basic suspension settings being within the spec. range), as well as unequal corner loading as drnick mentioned.
The first things to check are tire pressures and a "silk glove" touch to check for any tire wear pattern: yes, I'm serious - often a wear pattern, such as a sharp or feathered edge is more easily detected by feel than by sight.
If I wasn't serious, to play on any latent paranoia, I'd have noted that first timers often over torque one side of the water pump due to difficulty in reaching the left hand bolts: the unfortunate and unforseen consquence of which is - "when under maximum acceleration, a +14 Deg. directional vector is established.....
The first things to check are tire pressures and a "silk glove" touch to check for any tire wear pattern: yes, I'm serious - often a wear pattern, such as a sharp or feathered edge is more easily detected by feel than by sight.
If I wasn't serious, to play on any latent paranoia, I'd have noted that first timers often over torque one side of the water pump due to difficulty in reaching the left hand bolts: the unfortunate and unforseen consquence of which is - "when under maximum acceleration, a +14 Deg. directional vector is established.....
02-17-2004, 02:43 PM
#5
Rennlist Member
Re: Rotation
pone rear tire is smaller diameter than the other!
also, as was mentioned , some alignment settings can do this too. worn shocks, front lifts , toe changes on one side and not the other.
ride hight can do this too.
check the rear tires. same brand and wear??
MK
also, as was mentioned , some alignment settings can do this too. worn shocks, front lifts , toe changes on one side and not the other.
ride hight can do this too.
check the rear tires. same brand and wear??
MK
Originally posted by MBMB
Cruise down the highway. Car tracks straight. Floor it. Car tries, ever so slightly, to go right.
Hallucination?
Bug? (Engine mounts?)
Or undocumented feature? (I seem to recall that the P-51 Mustang, like my R-100S, made tighter turns to the right under throttle because of the engine's heavy parts' CCW rotation.)
Do Aussie 928s try to go left when you floor it?
Thanks,
Mark.
Cruise down the highway. Car tracks straight. Floor it. Car tries, ever so slightly, to go right.
Hallucination?
Bug? (Engine mounts?)
Or undocumented feature? (I seem to recall that the P-51 Mustang, like my R-100S, made tighter turns to the right under throttle because of the engine's heavy parts' CCW rotation.)
Do Aussie 928s try to go left when you floor it?
Thanks,
Mark.
02-17-2004, 02:57 PM
#6
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I actually think your rearend is turning left ......... which can be a issue of bad rear alignment . Check the suspension for looseness have it aligned all 4 wheels .
