The Stovebolt Site Forums The Parking Lot Big Bolts How common are power dividers??

My dad had a 63 model 60 with Knapheide grain bed like a 16 ft I was pretty young when he had it and as I recall the main driveshaft was turnning when the bed was being raised and I recall him saying something about it being on a spline and talk of a power divider sounds familiar. Was this common place for use on bed hoists?? I know most just use the pto to run the pump. I know they bought this truck brand new without the bed they put that on after buying the truck. How common are these?

I believe they are uncommon for a simple dump bed.
More common for higher HP things, like water pump on a fire engine, and some other things I can't think of right now.

53moneypit will have the answer.

Grigg

Thanks Grigg I was just looking in the forum here and found a topic regarding an Auxilary transmission with pics from a manual. This has to be what I am thinking of.

There used to be power divider transmissions used to split power to tandem rear axles. However by 63' these would have been very unlikely and hydraulic pumps were run by PTO's on main transmissions. Your statement that it was C60 with a 16' body makes it all the more unlikely that it would have such a unit as 16' farm bodies are single axles. Dad's truck probably used a 4 speed transmission with a 2 speed rear as that was the common Chevy truck of the day, in fact I had such a truck myself except it was a GMC. Since you were "pretty young" it seems more likely to me that what you recall turning was really the PTO driveline.
Natuarally I can't be sure but this is the most reasonable explanation in my considered opinion.

Thanks for the info yes that truck is a single axle. I will have to ask the owners of it now about that one to settle my curiousity.

I have a ford manual with spicer transmissions and PTO's in it.
It shows what is called a "power divider" used to take one PTO shaft and run multiple things, like two winches or hydraulic pumps.

Also shows a "split shaft PTO". This mounts in place of the drive shaft carrier bearing and offers a pto at full engine power while the final driveshaft is disconnected. Says for use with things like air compressors, pumps, and blowers.

It could be that the truck you are talking about used a "power divider" sort of like a transfer case that was intended for operating a second rear axle. But in place of the extra axle is the hydraulic pump. I think some of these could be shifted such that the driveshaft is out of gear and the second output, now for the hydraulic pump, in gear.

Grigg

Nothing is impossible and Grigg may be on to something but a lifetime of working around this stuff makes me believe that such a unit would extremely unlikely on a farm truck. Of course the chassis may have had another life before becoming a farm truck, who knows?

Grigg, does that F*%d manual state that the so called power divider is a Spicer or is used only for illustration? Of note is the fact that there used to be Spicer PTO's which included various configurations possibly even the one you describe.

Case_man can you get a photo of this thing and post it. Now we're curious.

Dave,
The ford manual is titled "1965 ford trucks power transmission components Dana Spicer"
Best I can tell it is all Spicer stuff, with some of the smaller pto's being Chelsea.

The "Reversible Power Divider" is listed under the "Spicer Special Power Take-Offs and Gear Boxes" section. It has 1.25" shafts both in and out, so it is only intended to multiply the number of outputs from an existing PTO on the transmission.

I think that the most likely situation as described is a "split Shaft PTO" This would account for the main driveshaft turning while dumping. I also think that this type of pto is overkill for a simple dump bed.

By far the most common is a transmission mounted
PTO and a small driveshaft to run the pump.

It's possible that a tandem rear axle power divider was used because it was "laying around" Also possible that the Split shaft PTO was used for the same reason.

I think from here only a picture will give us an answer or more information.

Grigg

If I can ever get pic of it I sure want to and I will have to ask the guy dad sold it to or the ones who have it now. I was too young to pay much attention and dad is gone now and boy do I wish he was here to ask. I am pretty sure I recall seeing that big driveline turning and it almost seems familiar thinking how odd that it was turnning but we werent moveing The truck was bought brand new just the cab and chassis from the Chevy dealer. I dont know if great grandpa who actually bought it ordered it or if it was already on the lot. He may have ordered it in I found an old partly in color pamplet for the big bolt Chevys from when he bought that thing I was little and its long gone I wished I had that back!!! It showed 60 trucks cabovers also!! The truck I am talking about though is a single axle with long chassis had a 292 in it and is a 1963 "60" I am sure he said something about that driveline setup and power divider and spline sounds awful familiar I am going to have to ask I am curious also!!! :confused: