T-20 idea

[mudbug3]

The admiral transmission in the new Argo's uses a triple differential that steers with the disc brakes and calipers mounted on either side of the transmission.

What if you had longer out put shafts made that would take a sprocket and also a disc brake rotor and caliper? Could you then remove the bands inside of the T-20 and use the hydrolic brake calipers to activate each brake rotor to steer left or right? This way you'd never have to replace the drum bands when they wore out.

[amphibious drew]

There is 2 sets of bands for each side. you certainly could break each side, but the bands also engage the drive forward or reverse, and your idea does not accommodate the drive part. Also, older t-20's were made with disk brakes on the output shafts.

[thebuggyman1]

Won't work.
There is a forward and a reverse drum in each side of the t-20. They are connected together by the planetary gears (attached to one by the pins, and the other by the ring gear).
Each drum spins in an opposite direction. There is a band for each drum. To go forward, you need to tighten the reverse drum's band, stopping this drum and forcing the forward drum to spin. The diamond shifter connects the output shaft (sprocket) to either the fwd or rev drum......
I was actually amazed at what a simple system it is....and still in awe of how well it works

[mudbug3]

Thanks for explaing this to me. I see now why my disc brake and caliper idea won't work.