Honda engine shaft for pump

[oldforestor]

I have a Honda 5hp motor from a dead pressure washer. I want to put a transfer pump on it.It has a 7/8" horizontal shaft. All the trash and transfer pumps I've seen have a 3/4" shaft. ?????
Are there no pumps for 7/8 shaft????

 

[KYErik]

This business sells crankshafts very reasonably ($30 or so) if you decide to buy a 3/4" pump and want to swap to a 3/4" crank: http://www.jackssmallengines.com/equipment/small-engine?gclid=CMrfipmu5swCFYNsfgod0VANfQ

 

[FredH]

Simple solution would be Lovejoy couplers like this :

Lovejoy 1187 Size L95 Standard Jaw Coupling Hub, Sintered Iron, Inch, .75" Bore, 2.11" OD, 1" Length Through Bore, 561 in-lbs Max Nominal Torque, .188" x .94" Keyway: Spider Couplings: Amazon.com: Industrial & Scientific

Thus You don't have to have them directly bolted together .

Fred H.

 

[PILOON]

For occasional basic (crude) coupling you can also use a short length of 3/4" hydraulic hose and either clamp onto the shafts or even drill for 1/4" hardware.
I have even seen this approach on some commercial applications that did not carry all that much torque.
For a transfer pump it would work IMO.

But I agree that Lovejoy style couplings is the best method.

 

[oldforestor]

For occasional basic (crude) coupling you can also use a short length of 3/4" hydraulic hose and either clamp onto the shafts or even drill for 1/4" hardware.
I have even seen this approach on some commercial applications that did not carry all that much torque.
For a transfer pump it would work IMO.

But I agree that Lovejoy style couplings is the best method.

Thanks for replies. I'm trying to fit the transfer pump onto the existing cart thing so inserting the shaft into the pump is a space save. I'm mulling over cranking it up and putting a file or grinder to it, then reslotting it with a dremel?

 

[aczlan]

For occasional basic (crude) coupling you can also use a short length of 3/4" hydraulic hose and either clamp onto the shafts or even drill for 1/4" hardware.
I have even seen this approach on some commercial applications that did not carry all that much torque.
For a transfer pump it would work IMO.

But I agree that Lovejoy style couplings is the best method.

New Holland uses that on the crank arm to adjust the kicker speed.

Aaron Z

 

[Redneck in training]

I have a Honda 5hp motor from a dead pressure washer. I want to put a transfer pump on it.It has a 7/8" horizontal shaft. All the trash and transfer pumps I've seen have a 3/4" shaft. ?????
Are there no pumps for 7/8 shaft????

Make sure that the shaft has Imperial dimension as opposed to Metric. Closest Metric to 7/8 is 22 mm.