[virrix]

I know next to nothing about components in the drivetrain, just the basics. Could someone please explaine the difference and pros/cons of a rear with poistractions vs. spool? Thanks.

[OneMoreTime]

Well I will try and explain it..a bit..

A spool locks the rear end completely and does not give any differential action at all when cornering or parking..any of the things we do in a street car..We use spools in dirt racing and in some 1/4 mile cars to give a direct drive to both wheels..

A posi allows differential action so the car can corner and a posi only locks up when one of the tires spin..much beter on a street car or a pavement roundy round car..

Posi tracs are used in street driven pickups to help with extra traction when off in the mud and such..

Open rear will send power to the tire that has the least traction..what one gets on ice and slicky when one wheel spins and the other one just sets still..Open rears allow differential action when cornering and parking..

So for the street car we use a posi if possible...

Does that help ya..??

[virrix]

Yeah, that did help. Thank you.

[Centerline]

To expand just a little bit..... When you go around a corner the inside wheel will turn less revolutions than the outside wheel. This happens simply because the outside wheel has to travel further than the inside wheel. A spool will not allow this to happen. When turning a corner the inside wheel will try to turn the same as the outside wheel which puts great strain on the axles as well as causes excess tire wear. Posi units allow traction to both tires when needed but allow this "differential" action when cornering. Spools are also very dangerous on a street car in the rain for the reasons stated above.

Centerline