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What is a "mini-spool"?

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Old Jul 31, 2004 | 03:50 AM
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Default What is a "mini-spool"?

I bought a used Moser 9" recently to put on my Formula. How does a mini-spool work and how is it different from a Spool or a Posi?
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Old Jul 31, 2004 | 12:44 PM
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A mini-spool just replaces the "guts" of a standard diff. It works like a spool, just not as strong.
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Old Aug 3, 2004 | 02:43 PM
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then whats the point of it? just cheaper?
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Old Aug 3, 2004 | 03:28 PM
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Yup...and easier...you dont have to remove the carrier from the housing...
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Old Aug 6, 2004 | 01:45 PM
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Weak. Don't do it.
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Old Aug 9, 2004 | 03:43 PM
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i called summit to see if they made one for my 02WS6 to minimize downtime until i get a 12-bolt. they said no one makes them...
is this true? does anyone know of someone who does make them?
i just want to be able to drive/race the car untill i find a good deal on a 12-bolt
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Old Aug 10, 2004 | 10:11 AM
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A mini-spool wont really help prolong the life of the stock 10 bolt. There are too many other weak links. I'm not even sure if anyone does make a mini for a 7 5/8" 10bolt. You'll need to run c-clip eliminators anyway.
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Old Aug 22, 2004 | 03:08 PM
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Cheap Redneck Spool
Remove rear end cover. Clean out oil use lots of brake clean. Take welder and weld the spiders together. DO NOT weld axles to spiders.


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The only reason you would run a true spool is for strenght. The mini spool is a weaker spool, why anyone would run it? Im not sure? No one I know runs one.
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Old Aug 30, 2004 | 09:36 PM
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Some circle track guys run them for class limitations where a standard spool is not permitted.

Stronger than a posi I guess, but for a street application you may want to look at a Detroit locker, or the new posi-locker from Auburn (I think they call it the ECTED or something, basically an electronic locker that is a 2.5:1 bias posi when unlocked).

To my knowledge no one makes a 7.5" mini-spool... I've seen a few people search for one over the past 5 years or so. For that matter, I belive a full-sized spool is fairly rare as well (although I swear I read about a company in the south that made them for cheap). Sticky tires + full spool + high torque = broken splines. They're not popular for a reason.
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Old Sep 1, 2004 | 10:44 PM
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Richmond gear makes them, but don't get one, theres no reason to
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