New Acquisition: Rocky Mountain Transmission
Posted: Mon Aug 21, 2023 9:50 pm
Found this recently and picked up Sunday. I’ll be needing to open it up in a bit to check condition.
Tom
=====
Tom
=====
MTFCA Forum
Model T Ford Club of America
https://mtfca.com/phpBB3/
New Acquisition: Rocky Mountain Transmission
Page 1 of 1
Re: New Acquisition: Rocky Mountain Transmission
Posted: Tue Aug 22, 2023 2:19 am
I made up some new counter shafts for these a few years ago and still have a few if it turns out you need one.
Re: New Acquisition: Rocky Mountain Transmission
Posted: Tue Aug 22, 2023 3:17 am
Those are neat gearboxes. That looks like it may be the TT 1-ton version. I think those were available as a "6-Speed" (under, direct and Overdrive) and a 2-spd (under and Direct or Direct and Overdrive). Should be marked on the case what it is.Tom Dove Jr wrote: ↑Mon Aug 21, 2023 9:50 pmFound this recently and picked up Sunday. I’ll be needing to open it up in a bit to check condition.
Tom
=====
If it is a TT version, might be a challenge to get it in a car chassis.
Re: New Acquisition: Rocky Mountain Transmission
Posted: Tue Aug 22, 2023 8:21 am
Hard to read the nomenclature but it does look like a "beat up" number 6 in front of "speed transmission"
Re: New Acquisition: Rocky Mountain Transmission
Posted: Tue Aug 22, 2023 10:52 am
TWren, you are correct. Close examination shows a 6 speed. Also appears the S/N has been shaved off. Might just be under the paint.
Clayton, my thoughts as well. The unit was reputed to be rebuilt some years ago prior to the TT's owner passing away. The TT itself found a new home and this was discovered just a few weeks ago and was to have been installed at some point. I likely will sell in hopes of getting a more appropriate unit.
Dan, you may be called into service for those shafts.
Tom
=====
Clayton, my thoughts as well. The unit was reputed to be rebuilt some years ago prior to the TT's owner passing away. The TT itself found a new home and this was discovered just a few weeks ago and was to have been installed at some point. I likely will sell in hopes of getting a more appropriate unit.
Dan, you may be called into service for those shafts.
Tom
=====
Re: New Acquisition: Rocky Mountain Transmission
Posted: Tue Aug 22, 2023 1:57 pm
Its very similar to my Universal.Tom Dove Jr wrote: ↑Tue Aug 22, 2023 10:52 amTWren, you are correct. Close examination shows a 6 speed. Also appears the S/N has been shaved off. Might just be under the paint.
Clayton, my thoughts as well. The unit was reputed to be rebuilt some years ago prior to the TT's owner passing away. The TT itself found a new home and this was discovered just a few weeks ago and was to have been installed at some point. I likely will sell in hopes of getting a more appropriate unit.
Dan, you may be called into service for those shafts.
Tom
=====
They were bought up and the name changed under the Rocky-Mountain banner. Mine is a 2spd underdrive version...so "Slow and Slower"
I'ts going to go away I think in favor of an Iron Warford and a set of high-speed gears for the axle. 
Re: New Acquisition: Rocky Mountain Transmission
Posted: Sun Jan 28, 2024 11:28 pm
I am working on a Rocky Mountain 6 speed trans and after looking at the pictures here, I am wondering what I have. The pictures on this thread show a different design and have made in Seattle Washington on it, the one I have says it was made in Los Angeles California on it and I am including pictures. Any info would be greatly appreciated. Thanks, Dennis
Re: New Acquisition: Rocky Mountain Transmission
Posted: Mon Jan 29, 2024 6:11 am
Dennis P, Your transmission looks like a car unit. They can be a bit confusing looking at photos knowing whether they are a three speed U-D-O unit or a two speed direct and one other gear unit.
Most of the ones I had with the three speed (3X2=6) had a bulge for the additional gearing that I do not see on yours. However, I have been told I was wrong about that before? The couple I had that looked like yours were two speed units. But again, I have been wrong before.
Most of the ones I had with the three speed (3X2=6) had a bulge for the additional gearing that I do not see on yours. However, I have been told I was wrong about that before? The couple I had that looked like yours were two speed units. But again, I have been wrong before.
Re: New Acquisition: Rocky Mountain Transmission
Posted: Mon Jan 29, 2024 10:55 am
There are mountains around both Los Angeles and Seattle, but the "Rocky Mountains" are in Colorado, Wyoming and Montana and on into Canada. Wonder why they didn't name it San Gabriel Mountains or Cascades? Norm
Re: New Acquisition: Rocky Mountain Transmission
Posted: Mon Jan 29, 2024 12:56 pm
Thanks guys for the responses, it looks like you have to pull the output/pinion shaft out if the trans to be able to set up the pinion to ring gear depth and backlash, has anyone set up one of these that can tell me how it is done? Thanks, Dennis
Re: New Acquisition: Rocky Mountain Transmission
Posted: Mon Jan 29, 2024 2:08 pm
Yes you can remove the output shaft, mount the pinion and set up the ring/pinion mesh. The shaft will come out from the output end. Here is what they look like removed from the transmission:
Re: New Acquisition: Rocky Mountain Transmission
Posted: Mon Jan 29, 2024 8:07 pm
Thanks Dan, That is what I was looking for.