|
|
Aggieland | Silly question to some I'm sure but I'd like to know how a two speed rear end works. I am thinking of getting into a small time trucking hauling cotton bales from the gin to the warehouse during ginning season. A neighbor has a IH 1900 truck with a DT466, 5 speed with an electric two speed rear. Hydraulic brakes and a 4:10 ratio. It's a straight truck with a 24ft flat bed.
I have driven a 10 speed, 9 speed, 5 speed and 6 speed but never a two speed rear.
Do you shift through the gears and once in 5th gear flip the switch while going (50mph?) or is it a "I have a load so I leave it in low and drive, after I'm unloaded I put it in high and take off"?
Truck runs very well and is in great shape, registered at 26k but I would need it to haul a little more than that. At 26k I'd only have 10k useful load and I need 15k to make it pencil. I realize that gets me to class B CDL but it may be the necessary way. I may not end up buying this truck and doing it at all but I'd still like to know how to drive a two speed rear.
Thanks,
Caleb |
|
| |
|
Lenawee Co Michigan | I drive the truck in low when loaded and switch to high in top gear if the engine has enough umph to do so. |
|
| |
|
Illinois | For most you shift each gear. 1 low to 1 high then 2 low to 2 high etc. A Clark 5 +2 is different you go 4 low to 5 low then 4 high to 5 high.
To go from low to high pull the button up and let off the gas. It will shift on its own. For high to low push the button in then step on the gas. You don't need the clutch for the 2 speed. I will use it some for 3rd low to 3rd high because it will Holt the truck.
Hope this helps. |
|
| |
|
S.E. South Dakota | Split every gear. If it's like the old binder dad had go to from low 4 to low 5 then split back to hi 4 the to hi 5. |
|
| |
|
Mid-Missouri | Good advice above...everyone and truck is a bit different. The truck will let you know if it doesn't like how you are doing it. Deciding to use it or not is completely up to you, conditions, etc. Empty, leave it in high if you want and step on it. Loaded, use it to your advantage. |
|
| |
|
| find one with air brakes |
|
| |
|
| All very good advice. |
|
| |
|
Texas/New Mexico Stateline | Generally leave it in low until you get to the higher gears, then split as needed.
You'll find that in the lower gears you are just wasting energy splitting every one.
|
|
| |
|
central Virginia | Aww come on. Split them babies and feel like a super trucker. |
|
| |
|
west central illinois | 5288 - 5/4/2016 09:56
Split every gear. If it's like the old binder dad had go to from low 4 to low 5 then split back to hi 4 the to hi 5. they called that a working 5. Not all 5&2 shifted that way. We had one of each. |
|
| |
|
NW Central Ohio | I've driven a lot of different 2 speeds...and each one depends on the engine and gear ratios in the main transmission. I have 3 straight trucks with 2 speeds...and each one shifts different. The oldest...leaving it in low range all the way to 5th gear...then upshifting the axle is the way to go. With the second oldest...a 2,3low,3high, 4low, 5low and then 5high seems to be the way you want to run it (It's an old binder with a 345 V8). The third truck you go to 4th in low...then upshift to 4th high and can usually just drop to 5th high. They're all different. You just need time in "your" truck figuring out what gets you there quicker.
Edited by pupdaddy12003 5/4/2016 12:08
|
|
| |
|
South Central Illinois | You can split all the gears if you want to. Usually not necessary unless climbing a hill. If you need to split gears all the time you will probably want a bigger truck. Loaded usually run in low axle for easier starting. If it has a working 5th gear it is different than regular 5th gear. I think the working 5th gear dates back to the 55 MPH speed limit. I thing the working 5th gear peaks out at a lower top end speed. When Splitting Regular 5th gear 1L 1H - 2L 2 H- 3L 3H - 4L 4H - 5L 5H When Splitting with a Working 5th gear 1L 1H - 2L 2H - 3L 3H - 4L 5L - 4H 5H |
|
| |
|
| AGDEAL - 5/4/2016 10:51
For most you shift each gear. 1 low to 1 high then 2 low to 2 high etc. A Clark 5 +2 is different you go 4 low to 5 low then 4 high to 5 high.
To go from low to high pull the button up and let off the gas. It will shift on its own. For high to low push the button in then step on the gas. You don't need the clutch for the 2 speed. I will use it some for 3rd low to 3rd high because it will Holt the truck.
Hope this helps.
My old Chevy will not do that. |
|
| |
|
Northern California | It will happen at the worst (most embarrassing) location, no matter how experienced you are with a two speed axle. |
|
| |
|
| You are going to know the first time you are in 4 low then 4 hi then 5 low and the motor revs up then you will know it needs 4 low to 5 low then 4 hi to 5 hi.IHC dealer calls it a short 4 trans. |
|
| |
|
Illinois | Is the electric motor getting weak? |
|
| |
|
east central Iowa | Yes that's how I knew the tranny was different. I shifted from 4 hi to 5 low and the motor over revved. I used all the gears with my straight truck 5+2 345 hauling a 13000 lb 1466 |
|
| |
|
Aggieland | poordude - 5/4/2016 13:31
It will happen at the worst (most embarrassing) location, no matter how experienced you are with a two speed axle.
HAHA! So my neighbor brought the truck over and like you said I heard him grind the rear end coming over the train tracks, I thought "hmm that doesn't sound good". He left the truck and said take it for a spin when I had time. I finally got around to it and took off down the road. Thought I'd try the 1lo to 1hi, 2 lo to 2hi etc and it shifted pretty well but as Milofarmer stated in his post it seemed like wasted time, I didn't gain anything from 1-3 splitting. On the return trip I thought I'd try and down shift and boy that was a mistake, grrr vroom vroom ratchey etc. Then I noticed the neighbor out in her yard wondering if I was about to blow it up! After I got back to the gin I noticed a sticker above the driver door that had the shift pattern and directions. Its meant to be split every gear 1-5 according to the sticker. I see no need for as much motor as the little truck has when empty. That turbo 466 really seems to be a good fit for the truck.
I'm just not sure I can make it pencil to buy the truck and start hauling the bales. 11 Mile haul, $55 gross revenue per haul, 8 trips per 12 hours, 16 in a 24 hour period. 600 trips per season. If I get a semi with a van trailer I can haul more and my gross goes to $164, 3 trips per 12 hour, 6 per 24, 220 per season. I can buy the truck for less than $7,000 or he said pay him a rental fee (unknown $) at the end of the season.
Caleb
 (GetAttachment.jpg)
Attachments
----------------
 GetAttachment.jpg (10KB - 166 downloads)
|
|
| |
|
northwest Iowa | When shifting up from say high 3rd to low 4th push the button in first and then shift. To shift from low side to high side pull the button up and let off the throttle to let the axle shift. I had a 1900 IH for a few years and it was a good runner but no powerhouse. Got the job done though. Phil |
|
| |
|
South Central Illinois | We have an IH 1800 with a DT 466 with a 5 speed transmission without a 2 speed. It tops out at 65 mph. Get by just fine without the 2 speed. The inline 6 is good at lugging. We did have the pump adjusted, IIRC it is currently set at 165 HP. The local pump shop has a single axle dyno, IIRC when it went in it was set at 125 HP. There are times a 2 speed would be nice just not mandatory. |
|
| |
How to shift a two speed axle?
