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Old 01-31-2005, 06:43 PM
84Z 84Z is offline
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What's a spool and mini spool?

I've seen these in a lot of places, but I dont really know how they act or what they're like. What does a spool and mini spool do, are they reliable and would you recommend them, thanks.
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Old 01-31-2005, 07:24 PM
edge's Avatar
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Re: What's a spool and mini spool?

Quote:
Originally posted by 84Z
I've seen these in a lot of places, but I dont really know how they act or what they're like. What does a spool and mini spool do, are they reliable and would you recommend them, thanks.
Spools and mini-spools lock both axles as one and should not be used on the street.

You can read about it at the following links:

http://stockcarracing.com/techarticl...07_spool_mini/

http://www.auburngear.com/aftermarke...chure_2000.pdf

http://www.reiderracing.com/rtech_diffs.htm
http://www.reiderracing.com/spools.htm

Ed
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Old 01-31-2005, 07:33 PM
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In an automobile rear end there is a pinion gear and a ring gear. The ring gear rides in a unit called a "differential". This unit has gears inside that allow the rear axles to turn at different speeds. When you go around a corner the outside axle turns more than the inside axle.

A spool is the center unit that is made in one piece and splined directly to the axles. Used mostly in Drag racing. The axles must always turn at the same rate. If you go around a corner one axle forces the other one to go the same speed. Thus, you get tire scrubbing and sliding. Not good on a street car..Dangerous, to say the least..

A mini-Spool is usually a piece that fits inside the original differential unit and locks the rear axles together. Doing the same as the spool. At a lower cost..

Spools are meant for racing purposes only. On a street driven car they can cause irratic handling, unexpected tire sliding, broken axles, and an uncontrollable car on curves and damp pavement..
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