2 speed axel

champdog · Post by **champdog** » Tue Sep 11, 2007 5:44 pm

Does anybody know of a 2 speed axel for a ford nine inch. thanks

averagef250 · Post by **averagef250** » Tue Sep 11, 2007 6:17 pm

Never heard of such a thing

fordman · Post by **fordman** » Tue Sep 11, 2007 7:14 pm

no those are only for big trucks.

FLATBEDFORD · Post by **FLATBEDFORD** » Tue Sep 11, 2007 9:23 pm

Would be nice to have one for my dana 70.

gbrett · Post by **gbrett** » Tue Sep 11, 2007 10:08 pm

there were kits avail for some axles but not 9inches to my knowledge

fmartin_gila1 · Post by **fmartin_gila1** » Wed Sep 12, 2007 5:47 am

You could only (as an option) get a two spd axle from about F500 and up.
Fred

gmcjimmy88 · Post by **gmcjimmy88** » Wed Sep 12, 2007 6:29 am

I have always wondered why this was not a bigger market. I mean think of the range you could have for a truck. It would be ideal for those of us who enjoy off-roading. To be able to keep a 3.73 or 3.52 on the street and then switch to a 4.56 or 5.18 gear on the trails. other than size and weight I realy dont see a major drawback. Would need the same setup in the front as well. I would think it could be done in a size comparible to a GM 14 bolt. OH well something for the big guys to ponder LOL.

cdeal28078 · Post by **cdeal28078** » Wed Sep 12, 2007 6:30 am

Some of the older cars had something similar I have heard of but never seen. It was called a Columbia axle. Sort of a 2 speed I think. I'll see what I can find
clint

cdeal28078 · Post by **cdeal28078** » Wed Sep 12, 2007 6:32 am

OH I want one! Came out on the 32 Ford. Check it out.

http://www.flatheadv8.org/columbia/columbia3.htm

MaxKlinger · Post by **MaxKlinger** » Wed Sep 12, 2007 7:25 am

Wow, that article on the Columbia is really cool. By the way the article was written, I'll bet it was from the 60s or 70s. That probably means that those parts were 35 years old and growing scarce when the article was written, and it's been another 35 years since then. I'd love to see one.

champdog · Post by **champdog** » Wed Sep 12, 2007 12:13 pm

Yes it would be nice to git the rpms down on the freeway and if towing keep them up for power.

fmartin_gila1 · Post by **fmartin_gila1** » Thu Sep 13, 2007 10:37 am

During my mis-spent youth (late 40s-early 50s) every junkyard still had a few of these laying about, although by then a lot had been melted down for the war. Worked on the same principle as the two speeds for the larger trucks. There was some extra unsprung weight and quite a large bulge on one side of the center section. Now, the best way to handle it is to add a two spd box to the tranny or just change out the tranny to one that has the gear you want.

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