kit car without lsd diff

[YARDMASTER]

what are your opinions about this?

[Paul Drawmer]

Mine didn't have an lsd. Most people thought it was OK on track.
Oddly enough I only ever noticed the inside wheel spinning at Bruntingthorpe at the chicane on the back straight.

[Ferg]

Mine doesn't have one.

[Furyblade_Lee]

It depends on what car you have and what you use it for, and does it have an abundence of power or just enough? If you struggle to make the thing wheelspin by just throttle application then I doubt you need one. However if you have big torque ( my bike engine car has virtually none... ) and your car can light its wheels easily then you realy should have an LSD. Like Paul I used to have a Libra too, had no LSD but I found it made power oversteer very scrappy and inconsistent. And it would spin its wheel under hard acceleration, I think an LSD would have made it a far nicer / faster car.

I have had both in bike-engined cars, would not want one without again unless I reverted to driving like an old woman. Something like a Quaife ATB has no downsides in my opinion. I currently have quite an agressive LSD enabling my R1 to be driven like a MKII Escort rallycar, totally predictable and safe in oversteer. I use my car for sprinting now, and without an LSD it would be substantially slower due to wasted wheelspin. My other sprint car is a 120bhp '71 Cooper S, that is in dire need of an LSD and I will fit a Quaife as soon as funds permit. It is frustrating to say the least driving it quick, constantly battling wheelspin.

Edited by Furyblade_Lee on Sunday 3rd June 09:33

[Paul Drawmer]

I once drove a mini in a hill climb that had a LSD (no idea how much it locked) but it was 'interesting' to say the least - power on turn one way, power off turn the other. Going up the hill wasn't that much of a problem as I was 'on it' 95%. But in the queue running back down to the start, it bloody frightening!

[motco]

You're less likely to lose the back end without an LSD as you cannot get both wheels to lose grip at once with mere torque. Given a load of torque and an LSD in a light car, if you apply a little excess welly on a bend you might break grip on the rear rather suddenly. My Westfield has no LSD and it does spin the inside wheel on track in chicanes but it's fine otherwise.

[Paul Drawmer]

So, OP; what sort of car are you thinking of? The suitability of an LSD is not universal, it very much depends on what configuration the car is, the power available, and the use to which it is being put. Your question is really a 'how long is a piece of string?" one, without further info.