MSP lsd questions and spinning tires

[jaymode]

Well it has rained all day today. So I am leaving school to go to lunch and make a right turn onto a street from a stop sign, my tires do not spin at first, but around 4k rpmsin first they start slipping and I feel something cant really explain it but guess its the lsd? So does the lsd work all the time or only when the tires start to rotate at different speeds?

Does anyone else get this when they drive around in the rain? After I shifted the slipping stopped, but this happened a couple times, but really only while turning.

 

[srtchick]

SAME HERE

WHOA the same thing happened to me in the rain yest.. while turning.. the wheels like spun then i gave it some more gas.. (i was in the middle of a turn n not moving with oncoming cars coming) the whole car liek vibrated or sumthin i dunno if it was the lsd im sooo used to ****** traction control .... o well !

 

[N1XRR]

Well, unfortunatly this is one area where the LSD's in our cars are not very good. We have a TORSEN LSD(TORque SENsing) and they pretty much don't work when one tire is spinning out of control like that. What you probably felt was wheel-hop, which our cars do fairly bad(not as bad as some...like Sentra SE-R Spec V's)

Does anyone else get this when they drive around in the rain? After I shifted the slipping stopped, but this happened a couple times, but really only while turning.

The reason why the tires stop spinning when you shift is because the engine is not making enough power(torque or HP, doesn't matter) to keep the tires spinning...so the tires grip and you accelerate.

Where limited slip is good is when your coming out of a turn with your foot to the floor. If one wheel STARTS to slip it will attempt to transfer torque to the other wheel. The LSD's we have will only transfer torque to the other wheel if there is a set amount of torque on the one thats begining to spin. That is, if the tire that is starting to spin still is pulling the car along(and not just smoking the tire) then the other one will get some torque to help pull it thru.

I hope this helps.

Note: LSD's arn't designed to activate when one wheel is spinning faster than another...otherwise your LSD will be working 100% of the time in a turn. That would be a locking-diff.

 

[jaymode]

ok thanks. I think I understand it now, so It was just the power from the boost causing it to spin and the lsd couldn't help it, so I got some wheel hop basically.

 

[KyRaceFan]

there is an AWESOME article on diffs on www.howstuffworks.com
explains the differences in LSD, open, etc

 

[TheMAN]

uhh yeah... it was raining... what do people say when it rains?