Best I can tell the top is marked 1/2 at the rear and 3/R on the front. Shifting feel like an H gate not h. Did they come with reverse? I did a google search and about all I could find was about the special connector. This one is installed in a 24/25 TT.
They are okay. Internally most of the bearings are rollers that are all commercially available. The reverse lets you back long distances without holding a pedal down.
Yes, depending on which Jumbo model you have.
For the car, Jumbo Giant model 333, with 3-speeds forward and reverse. And the simple Model B.C., only 2-speeds forward, in price range to meet the Ruckstell.
For the TT, model 600 and 666, with reverse.
WOW, Fast. Thank you. I was thinking that they were like the Warford, under-direct-over. Cool! We got this semi restored TT in the shop to get running for a customer and it's the first Jumbo I have been around.
My TT jumbo giant had under-direct-overdrive....and reverse....
Put the trans in reverse ,,,Ruckstell in low,,Then push reverse pedal...Wa-la you went forward and it would climb a telephone pole if it could hang on ....They are perfect For parades...
I have one to consider installing in a project. I was told they are real noisy, are they?
Dale I ran a Jumbo 3 speed and it was noisy in OD but on par with a Warford, I found another Jumbo with a broken case but the gears looked brand new put them in my other case thinking it would be as quiet as a church mouse it was as noisy if not more so than with worn gears.
The so-called "square cut" gears are by nature somewhat noisy. If what you are used to is modern gears with either helical cut or other "modern" types of gears, all the early style transmissions will seem noisy by comparison. Be aware, in gear cutting technology, nearly everything manufactured after about 1930 is probably some sort of "newer" technology. Helical cut gears date back to the 1910s at least. However, "square" cut gear teeth remained common, even predominant, through the 1920s because they were easier to manufacture and required simpler (read that also as cheaper) machinery.
It is another example of how slow change tends to be. People were comparing what they had and were using against what they didn't have and couldn't use a decade before. The simpler (and cheaper) machine was such a huge improvement over what they had before that they were too busy enjoying the improvement to even notice the "being a bit noisy".
I have had several Ts with various models or combinations of Warford, Muncie, Universal, Ruckstell transmissions or gearings. However, I tend to like "old school" and hardly notice the noisy whines.
My Warford can sure whine when wound up in underdrive high?