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Noob question, I understand other types of Diff's, but what exactly does a "spool" diff do for you?:confused:



Thanks for your help.
Neil
 

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Drives by Braille
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13,637 Posts
A mini spool replaces the spider gears and side gears in the differential. It is then pinned and locks the axles. A full spool replaces the carrier, which the ring gear mounts to, in the differential. It also locks the axles.
 

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Jack Lives Here!!!
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7,757 Posts
With all other forms of mechanical locking differentials there is some release or slop that exists. ARB's, Eaton's, Ox etc you engage/disengage by switch or cable to allow normal operation. Lock rites, detroit, LSD etc. all still allow for some differing speeds for axle shaft rotation if there is no torque applied to it I.E. turning a corner. With a spool your axles are locked intogether 100% of the time. They are not very advantageous to have if you are putting many street miles put on your rig.
 

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WINNAR!!!!!!
2018 JLUR on tons and 40's.
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6,853 Posts
a Jeep with a spool is like driving a go-kart with a solid chain driven axle. Both wheels spin the same speed at all times and its hard to turn.
have you ever driven a spool??



In my experience with street driving the cheap mans spool (welded spiders) the on road characteristics were easily controllable. It wasn't hard to turn, it wasn't hurky jerky like people make it out to be. I drove mine for a year that way everywhere I went. But I didn't pay for the tires I had so I didn't mind it much :)
 

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Drives by Braille
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Yeah - my friends YJ had one with 33's... nasty bugger. Might have just been the horribly old and tired suspention it had under it, but my god that thing was pretty scarry on the road.
 
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