What gearbox ?

[72 Charger]

Hi all im planning a build using the Allison Aircraft engine for a Rat Rig  . I wanted to know what gearbox would best suit it?

[Junkman]

A Fuller.

[Crazy Ed]

    Maybe surprising, but many of the only slightly modified Powerglides could do the job.

[72 Charger]

Im not to savey with gearboxes which trucks would I find a Fuller or a Powerglide

[10thumbs]

Hi Dave, a Powerglide is a 2 speed automatic Chevy trans.  Very robust.  The Fuller deal I'm not sure about, but then again any truck-type trans would probably work, unless you're going for a perfect assembly.

Google is your friend.

[72 Charger]

Thanks Michael I did look on Google at the Allison engine but didn't think about the box  

[LDO]

Jay Leno has a couple of cars with huge engines (aircraft size). They both use Allison transmissions, as used in Greyhound busses. What does an Allison transmission look like? Heck if I know. I'd guess it's the same for most of us. Use a trans from a big rig kit.

Where are you getting a big Allison engine? FYI- Airfix makes a 1/24 P-51 with a Rolls-Royce Merlin that is not bad at all. You could get a couple of turbos off a larger scale kit and make an induction system like on pulling tractors or old hydroplanes.

[Ace-Garageguy]

Where are you getting a big Allison engine?

Probably this one, re-released many times in various packaging.

For good info on Allison transmissions, ask over on the big-truck forum.

Edited November 28, 2015 by Ace-Garageguy

[Force]

The AMT Kenworth K100 Aerodyne and Tyrone Malone race trucks has Allison auto trannys, and I have seen them from a couple of resin casters.

[72 Charger]

Thanks guys that's very helpful. Lee I had thought about the Allison transmission for it and I do have the AMT KW that Hakan speaks of .

Yes Bill that's the one

[LDO]

Oh THAT Allison V-12. Forgot about that. It would be cool to see a pair of those on a pulling tractor.