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basically just a full spool that replaces your spiders instead of the whole carrier. some people run them in street/trail trucks and pull them in the winter so they can have open diffs for snow but be spooled in the regular weather. fits in just like a lunchbox locker but its a spool all the time
yep they are 100% locked whenever you have it installed in the diff. some have said that they are weaker than a full-carrier locker or spool, and while this is true, there shouldnt be any stregnth problems with an application like a 14ff
If you go over to POR, there is a vendor selling the Sandy Cone 14FF mini spools for aroudn $189+shipping. Haven't seen anyone vendors on here sell them yet. Also, Yukon makes a full spool which is a little over $200.
detroit lockers are pretty cheap for a 14 bolt anyway!compared to other lockers for other diffs plus id just weld up tha spiders instead (of gettin a mini spool)
Why pay for a mini-spool when you can just have it welded. It is the same thing. Sure a mini-spool may technically be stronger but I have not heard of anyone breaking a good weld job in a 14bff.
I run a welded 14 bff in my semi-DD trail truck. Its not that bad on the street, the only part that really sucks is the tire wear.
people run a mini spool so they still have the option of putting the spiders back in in the winter so they dont have the truck pushing its self all over the road in snow and ice. also with a mini spool or lunchbox you dont have to deal with gear setup.
You can weld a 14bff up like a minispool design. It is the same process to drop the minispool as the welded and stick in a set of spider gears. People who swap in Detroits practically give there old spiders away so that is not an issue.
A welded rear is not that bad in snow or ice. I ran my welded rear in Colorado for a winter with no problems. It is about learning to drive that setup.