Hydraulic Snowblower

MIsatoh · Jul 3, 2019

I picked up a Hanson General Products 62.5" skidsteer snowblower at the auction and I cant find much info about it. I have a Massey Ferguson 1734e (27hp at pto)& I'm looking to get a pto pump & resevoir to run it. I was able to find info on the hydraulic motor that runs the fan/gear box/auger, it is a 3.6 cu in Char-Lynn: 2000 psi, 15gpm, 962rpm. So, does this mean I can run a 7.62cu in 16.6gpm (540rpm) hydraulic pto pump, with a 15 gal resevoir and have enough power to throw snow 30-40'?

Dave M7040 · Jul 3, 2019

The short answer is no.

Look at the spec's for this Landpride rear mounted hydraulic unit.

https://www.landpride.com/ari/attach/lp/public/lit/lit_hrs30.pdf

It requires a minimum of 52 HP to provide 25 gpm.

To provide 15 gpm you would need 15/25 * 52 HP or 31 HP at a minimum

Dave M7040

MIsatoh · Jul 4, 2019

Landpride also made the HRS18, which only requires 28hp to make 17gpm @ 540rpm (not sure of psi, but I only need 2000), If I could find a used one cheap enough, I would just buy one of these power packs, but I can build one (with a smaller res.-20gal & no cooler) cheaper. I just want to make sure, before spending the time and money, that will be enough to run the equipment I have (specs in the 1st post)

Dave M7040 · Jul 4, 2019

MIsatoh said:
Landpride also made the HRS18, which only requires 28hp to make 17gpm @ 540rpm (not sure of psi, but I only need 2000), If I could find a used one cheap enough, I would just buy one of these power packs, but I can build one (with a smaller res.-20gal & no cooler) cheaper. I just want to make sure, before spending the time and money, that will be enough to run the equipment I have (specs in the 1st post)
View attachment 611513

The same calculation results. 15/17*28HP=25 HP or much more than you have.

Better to sell the blower designed for a skid steer to someone with a skid steer.

Dave M7040

MIsatoh · Jul 4, 2019

"The same calculation results. 15/17*28HP=25 HP or much more than you have"
Doesn't this mean I only need 25-28hp? I have a 34hp tractor, 27 at the pto...

"Better to sell the blower designed for a skid steer to someone with a skid steer"
^That's what I was thinking

Thanks and Happy 4th of July!!!

RNeumann · Jul 4, 2019

I looked very seriously at this type of setup for my 38hp CUT. If the motor on the blower was sized right and you had the proper PTO pump with enough capacity and cooling the “book” says it would work. However, after much research I couldn’t find anyone who had done it or thought it was a good idea.

You have the right idea and so far you aren’t into it much. The right sized motor and pump and LOTS of cooling and fluid capacity.......you may have something that works. But it’s more of an experiment than a sure thing-IMHO

MIsatoh · Jul 4, 2019

I see one guy on here has done it, but he bought the expensive "power pack kit", where it was already put together on a 3pt. I would like to keep it under a grand & maybe build it on a existing backblade, so I could still drag snow in front of the garages, etc.

RNeumann · Jul 4, 2019

If budget was the main driver I’d get a small engine and mount it to the blower and convert it to chain/belt drive. I’ve seen a guy do that on here and he was having good results.

oldnslo · Jul 4, 2019

Misatoh
Char-Lynn usually have a chart in there data sheets showing actual flow vs RPM & also torque vs pressure.
If you can find that chart it will provide more accurate information on the motor performance. Flow vs RPM you have listed is at 100% volumetric efficiency.

Depending on the design you can build yourself a less expensive system that will work. The unknown is how well it will works. Type of snow is a big factor on how well a blower works.

For reference a very good hydraulic drive is only 80 - 85% efficient under load.

Suspect you will need to size the pump for 17 - 18 GPM or possibly more to maintain hydraulic motor speed under load

grsthegreat · Jul 4, 2019

my char lynn powered front blower runs at 3,000 psi, 15 GPM and uses all of my 45 HP tractor to power it. Has a 25 gal reservoir tank. WAY over $1,000. Wait till you price out a PTO pump motor. Its my understanding most skid steers operate at 3,000 psi.... but i may be wrong