Please explain a LSD to me !

[Marius]

I´m just willing to enlargen my tech-knowledge-horizon, hopefully you lot cab help me:

 

1) How does a LSD exactly work?

2) That given percentage of "limited-slip", what value is that ? What means 20% or 70% or whatever? Is that a little lock and a little more lock ?

3) Can I change the ramp-degree on a caterham LSD ?

4) everything else one should know about Caterham LSDs

 

Thanks for your help ! I´m currently changing the gearing of my LSD and I´m interested in some facts about those bits & pieces.

 

Marius

 

[kenny.]

Marius,

 

An LSD is a unit that looks exactly the same as the one you swap it for, plus you pay over £500 for privilege, the only differences are that it makes clonking noises that worry you silly, and pisses oil all over your freshly painted garage floor wink.gif. When you tell vendors of the problems you have, they say "they all do that sir".

Car feels exactly the same on road but rattlier....it also feels the same on track but magically your lap timer does tell you that you have shaved a fair bit of time off...so it feels worthwhile.

On the technical side its got lots of bits in it that make it an LSD......If it never had these bits then its just a diff!!!!!

Kenny HPC

 

 

 

 

 

Edited by - kenny on 7 Nov 2001 09:53:24

[R2D2]

Hope this helps.

 

http://www.howstuffworks.com/differential6.htm

[Gaspipe]

Kenny,

 

I like the way you explain Technical things.

 

It is all perfectly clear.

 

Regards

 

Graham

[I reply to every thread]

You can get the same effect by welding up your "Diff" with a MIG I'm told.

[elie boone]

Aves, If you do that then you got to drive your seven the same way you drive a kart. And your diff. wouldnt last for long with sticky tyres, with wooden tyres it will last a bit longer.

It is common practice for the low budget speedway racer ( or oval racing )

but they always set the car in a drift before the corner

[R2D2]

Aves,

 

If you want permanent two wheel drive and a car that "pushes" into understeer all the time a welded diff would be perfect.

 

This is the technique that sandcross cars use and it would be horrid on tarmac into any real corner.

 

I drove an Escort Mk 1 with a welded diff on a rally once and it was a nightmare until I stuffed into a dry stone wall with terminal understeer. I had borrowed it from a pal and he hadn't bothered to tell me.

 

I did hear a story that the LeMans Porsches didn't use diffs until the eighties to remove unreliability nut I'm not sure if its true. it could account for early 917s handling like pigs.

 

The early Quattro Rally cars also had a fixed 50/50 front rear split and they were quite difficult and couldn't be handbraked or left foot braked.

 

 

[Marius]

Thanks Kenny thumbsup.gif

 

Printed out some 20 pages from "howstuffworks", will take them to bed this evening and tomorrow I´ll be your diff-prof !!

 

Peter, are you reading this ?

 

Cheers,

Marius

[I reply to every thread]

My Tongue was in my cheek guys! Nice responses though!