4 ms·
Patterns like those are really, really really common on truck transmissions. One rail is 1st/reverse. Another rail is 2nd/3rd and the last rail is 4th or OD a
by throwaway0a5e 5y ago
Patterns like those are really, really really common on truck transmissions.
One rail is 1st/reverse. Another rail is 2nd/3rd and the last rail is 4th or OD and direct. Whether the "fore is a lower gear than aft" holds between the 2nd and 3rd rails is a function of whether or not it's a the pair of gears that constitute "forward gear on the right rail) will either be greater or less than 1:1 depending on if it's an overdrive transmission whereas the rear position on the right rail will always be direct for reasons that boil down to "that's the sensible way to build it".
There's not much to "figure out" when you have a direct lever that goes into the shifter.
- bombcar 5y agoExactly, the more the device can assume the operator is trained the simpler it is - so truck transmissions are closer to the "Platonic Transmission Form" if you will than fancy car transmissions. The Deuce doesn't even have synchronizers, you're expected to double clutch and handle that part yourself.
- fragmede 5y agoThey make automatic semi trucks these days, so depending on your POV, that's either closer or futher from the platonic ideal for transmission layout.