is it possible?

[scott2432003]

thanks for the advice on the clutch pump the last question i have is can i up the size of the pump to get the gpm i would need at slower speeds/lower rpm's for a snow blower or would i need the hydrostatic drive transmission to make it work the best?

 

[AKKAMAAN]

thanks for the advice on the clutch pump the last question i have is can i up the size of the pump to get the gpm i would need at slower speeds/lower rpm's for a snow blower or would i need the hydrostatic drive transmission to make it work the best?

The snow blower would need constand high rpm's to work.....can you move a stick shift or automatic transmission pick up truck, safely on constant high rpm's???

 

[J_J]

thanks for the advice on the clutch pump the last question i have is can i up the size of the pump to get the gpm i would need at slower speeds/lower rpm's for a snow blower or would i need the hydrostatic drive transmission to make it work the best?

There are lots of pumps out there that will produce 50 GPM or more, but the clutch pumps I have seen go up to about 21 GPM. Both Northern and Surplus Hydraulics have them. Here is a link to the clutch itself.

Ogura Industrial Corp. - Products

There may be a chance of running two pumps is parallel to give double the output. Perhaps AKKAMAAN can verify if one can take the output from two pumps and produce a larger flow without problems. Otherwise, two pumps having common intake manifold, and combining the output of the two pumps into a common manifold. Two 21 GPM clutch pumps producing a total of 42 GPM.

On the hydrostatic transmission thing, I think what AKKAMAAN is saying, is that you would have to be in a low gear for snow blowing, and therefore the engine has to be turning high rpm to produce the max output from the clutch pump. Using D1 or low gear, will keep the engine rpm high. However, if the pulley ratio could be changed to give high volume with slow engine speed, then that might work. I know garbage trucks and cement trucks have large pumps on the front of the trucks for whatever. Those pumps might be direct drive.

 

[AKKAMAAN]

There may be a chance of running two pumps is parallel to give double the output. Perhaps AKKAMAAN can verify if one can take the output from two pumps and produce a larger flow without problems.

Generally speaking that is not a problem....many open center systems do have multiple pumps of different reasons....but for cost efficiancy, 1 large is usually cheaper than two small....

Otherwise, two pumps having common intake manifold, and combining the output of the two pumps into a common manifold. Two 21 GPM clutch pumps producing a total of 42 GPM.

Is this different than the quote above???

On the hydrostatic transmission thing, I think what AKKAMAAN is saying, is that you would have to be in a low gear for snow blowing, and therefore the engine has to be turning high rpm to produce the max output from the clutch pump. Using D1 or low gear, will keep the engine rpm high. However, if the pulley ratio could be changed to give high volume with slow engine speed, then that might work. I know garbage trucks and cement trucks have large pumps on the front of the trucks for whatever. Those pumps might be direct drive.

Even if you are in low gear, you might have to vary the vehicle speed with the "gas" pedal (rpm's)....I just do not think it would be either efficient or safe....But sure it would blow snow....

An option would be using a, more expensive, pressure compensated variable displacement pump, in a closed center system,.....that pump would need to be a little over sized to make necessary flow on low rpms.....just make sure there is enough engine torque output at low rpm's for both blower and travel.....

 

[scott2432003]

Thanks for the input. Ill probably be asking a few more ?'S when I get to this part in the rebuild

 

[mmurphy]

Scott, I am not totaly sure of this but, it seems to me if you know some one that really knows automatic transmissions the valve body could be altered to the point of reducing flow to the torque converter and or you could go with a higher stall torqe converter that will allow engine higher rev before driving transmission. I will try to locate a guy that rebuilds trannys to see if that is feasible. If that is the case I cant wait to see the build what ever way you go.

 

[Wayne County Hose]

Go find a state truck with a plow and a sander. I installed live hydraulics on an F-700 by running a pump off the front of the crankshaft. This thing runs a dump body, main and wing plow, and a sander. A pump off the front of the crank gives you all the hyd gpm and psi you will need. And, I have seen those huge snowblowers on the big state trucks. So, what you want to do is definately realistic. I say go for it. The world hates a coward.