How hard would it be to get something like a Ford 9 inch (or other common pumpkin) with a 1:1 gear ratio or close to it?
How hard would it be to get something like a Ford 9 inch (or other common pumpkin) with a 1:1 gear ratio or close to it?
highest most go is around 2.30ish 1:1 would require one small ring gear and a large pinion that there's really not room for.
Check "Randy's ring an pinion"
A quick change with a high ring and pinion ratio and properly selected gears could do it.
Some of the rear drive units on transverse AWDs are close to 1:1.
Not very strong though. They probably would not handle being the end drive units of a transverse drivetrain mounted longitudinally for AWD.
Knurled, you just read my mind. AWD from a FF drivetrain mounted so that each "driveshaft" goes to a pumpkin is kind of what I was imagining.
Interesting on the quick change differentials. Would that just be something where I mount the top and bottom gears on the other shafts?
How would one do this AWD abomination without grinding the poor little fwd tranny into dust?
Use a hella beefed one- like an E153 or something.
I still really like the idea where you take a GM transverse automatic and hack the final drive to be 1:1. Then you can use whatever axle gears you want.
The final drive in a TH125/TH440 and 4T40/60/65 is planetary. The final drive is coaxial with the main gearsets, so the final drive is a planetary unit. Some judicious welding and grinding would make it direct drive to the differential. Then you just need to either get the 930 CV joint flanges from GMPP (for the Cobalt drag racers who use the 4T60) or machine a pair of sacrificial inner CV joint cups down to nubs and weld flanges to them.
The tricky part, for me, has always been how to connect the rear diff to the trans. For any reasonably short chassis, the diff has to practically spigot straight into the trans, which would require some SERIOUSLY beefy and precise mounting of the diff. There is almost but not quite enough room to use a guibo, which would be the preferred solution because of its harmonics damping and slight-misalignment-tolerating qualities.
I like the idea of the transverse GM-as-midengine-AWD hack that I bought a car specifically to do it with, before I had the idea fully fleshed out. Now I want to take that car and run it on a points distributor and twin Webers because I'm mercurial in my automotive interests.
I recognize that I'm one of maybe three people in the Western Hemisphere who actually likes guibos.
i've seen 2.14 or so gears for a 9" Ford, one of my friend had a 79 Cutlass with 2.27 gears in it... those are the highest gear ratios i've ever seen in a commonly available axle.
Would it be any tougher on a transmission than driving wheels directly?
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