progressive 5 speed, how many people can shift one. got them in my 86 GMC single axel trucks use these trucks as my grain carts, grand kids drive them 9610 combine two dumps and they go to the grain bens we are dumping at then back to the field am always weighting on them, takes 15 mins to unload 500 bu....grandaughtor says truck has no power cant get her to understand spliting 4th and 5th gears
- Thread starter stonerock
- Start date
old
Well-known Member
- Location
- Camdenton Missouri
If you think that is bad you should try an old twin stick 5X4 or 4X4. You learn fast how to shift them or you end up on the side of the road starting over again and again. Still have 3 of them on the place
showcrop
Well-known Member
When I was a kid I drove a pretty heavy GMC dump truck with 5x2. I can't really remember but I thought that we split each gear. It had a big motor over 500 cubes. The B Mack that I used to drive had a straight five speed, but an R model that I drove a few times had the five speed with low, high, and reverse on the auxiliary. The nice thing about that one was that you could start and stop without the clutch. Considering we were making 250 stops a day that was really nice.
notjustair
Well-known Member
I've got five straight trucks around here and none of them have the working fifth trans. I wish the newest one did. It's only a four x 2 and even with splitting each gear there is a large jump in there where the v8 falls on her face.
I grew up driving grain trucks and drove school bus for years. A two speed is second nature for me, but I would even have to think twice if I suddenly had a working fifth in one. I'm really impressed she understands the mechanics of what she is doing splitting those gears. Lots of people can't put their head into the machine to know how to treat it. It is counter-intuitive to think that you run fourth, then fifth, then back to fourth to go faster and finally to fifth again. My wife won't even consider driving one of the grain trucks (or the semis) and they aren't that complex. .
All of my straight trucks top out under 60 miles an hour. They can pull anything in the field though. You might have a prettty tight set of ratios - that makes her a good freeway flier but hurts it in soft ground. The best bus I had could pull a load up anything and run 75 miles an hour on the interstate (if you gave it enough time to get there). It was kind of an oddball, though. I can't remember the ratios exactly but one was in the 7's and the other was in the 4's. Spicer built one heck of a rear axle for that bus.
I grew up driving grain trucks and drove school bus for years. A two speed is second nature for me, but I would even have to think twice if I suddenly had a working fifth in one. I'm really impressed she understands the mechanics of what she is doing splitting those gears. Lots of people can't put their head into the machine to know how to treat it. It is counter-intuitive to think that you run fourth, then fifth, then back to fourth to go faster and finally to fifth again. My wife won't even consider driving one of the grain trucks (or the semis) and they aren't that complex. .
All of my straight trucks top out under 60 miles an hour. They can pull anything in the field though. You might have a prettty tight set of ratios - that makes her a good freeway flier but hurts it in soft ground. The best bus I had could pull a load up anything and run 75 miles an hour on the interstate (if you gave it enough time to get there). It was kind of an oddball, though. I can't remember the ratios exactly but one was in the 7's and the other was in the 4's. Spicer built one heck of a rear axle for that bus.
I can run a 5&2. Not too big of a deal. Started out at work driving the old tack truck with Ford 370-something with a 5&2. Good truck, dog of an engine and the transmission had something wrong with 2nd gear, always had a heck of a time coming out of 2nd. It would hold right on in 2nd, almost had to yank it out of gear when shifting out of second. "New" tack truck has M11 and 10 speed, much better set up!
john in la
Well-known Member
I assume you are talking a 5 speed trans with a 2 speed rear end.
Learned how to drive trucks on one of them.
It's basically like driving a 13 speed which is a 9 speed with a splitter on the back of the trans.
Learned how to drive trucks on one of them.
It's basically like driving a 13 speed which is a 9 speed with a splitter on the back of the trans.
coonie minnie
Well-known Member
I like running those.
ptfarmer
Well-known Member
- Location
- San Antonio, Tx
A 5+2 is so easy, the old 5X4, or a 6X4 are fun.
The company I drove for used them for years and they all shifted a little different. Latter on the newer tractors had Road Rangers and the one I drove had a straight 7 speed tranny and for LTL deliveries I liked it the best. What I didn't like about the 2 speed axle is that every several years i would get one that would hang up between high and low and would have to get under tractor and through it into high or low range gear and disconnect wires to unit and this would usually happen in rain or snow storm.
Butch(OH)
Well-known Member
Yes I can shift one. He isnt talking about your basic 5 and 2 guys.
I bought a new 1700 Loadstar in 1976 and it had the progressive trans. For those that dont know what he is talking about the shift pattern as you are going up through the gears is 4L to 5L then shift the axle and then 4H to 5H. It gives you 4 closely spaced gears where you need them without the huge drop in RPMs from 5L to 5H you have with a standard 5 and 2 set up. The tricky shift is when you come to a hill and need to shift down from 4H to 5L. This is accomplish by shifting the axle last, same as if you were going up through the gears. Basically all you need to remember is axle up, shift it before the trans, axle down, shift it after the trans.
Stonerock I would haul a few loads for you for free just to spend some seat time in those trucks.
I bought a new 1700 Loadstar in 1976 and it had the progressive trans. For those that dont know what he is talking about the shift pattern as you are going up through the gears is 4L to 5L then shift the axle and then 4H to 5H. It gives you 4 closely spaced gears where you need them without the huge drop in RPMs from 5L to 5H you have with a standard 5 and 2 set up. The tricky shift is when you come to a hill and need to shift down from 4H to 5L. This is accomplish by shifting the axle last, same as if you were going up through the gears. Basically all you need to remember is axle up, shift it before the trans, axle down, shift it after the trans.
Stonerock I would haul a few loads for you for free just to spend some seat time in those trucks.
The tilt and load 1600 IH that I ran (and many other trucks) had the "short fourth" I was hauling 4 gravity boxes home once with the tilt and load, two stacks of two catching a lot of air on a windy day. The engine in that truck was the 304. I never had the shifter out of my hand the whole trip.
rustyfarmall
Well-known Member
Gears 1 through 3 can be split with the 2 speed rear. Then you shift 4th low to 5th low, then to 4th high and then 5th high. Downshifting is done by 5th high to 4th high, then to 5th low to 4th low. '74 GMC with 427, and 8 ton combination bulk and bag feed box. Ran like a scalded dog when you wanted to.
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