How much horsepower do I need?

[Austin]

I want to get one of those 5800 psi/4.7 gpm pumps. According to the common equation i would need 24.78 HP. Do I really need that much or is that just an over assumption. If I have to buy a 25 horse motor 5800psi better be a huge step up from 3500.

And does anyone know the cheapest place to get honda motors?
my email is austinmcmahon@hotmail.com

 

[Mark]

Austin,

Yes you would need 25 HP to run that pump.

We have a 4.8 GPM @ 5000 PSI Hot HP Washer, powered by a 25 HP Kohler. The 25 HP Kohler drives the pump and a 2000 watt generator. The coils are made of Schedule 160 pipe.

To my knowledge the largest Honda available at this time is a 24 HP.

Are you planning on setting up a Hot or Cold water unit?

Is it really more pressure that you need? Or could it be more volume?

Give me a call today if you would like to kick some ideas around.

[hand]

 

[Mark]

Austin,

We have a 4.8 GPM @ 5000 PSI Hot HP Washer, powered by a 25 HP Kohler. The 25 HP Kohler drives the pump and a 2000 watt generator. The coils are made of Schedule 160 pipe.

To my knowledge the largest Honda available at this time is a 24 HP.

Are you planning on setting up a Hot or Cold water unit?

Is it really more pressure that you need? Or could it be more volume?

Give me a call today if you would like to kick some ideas around.

[hand]

 

[Austin]

Mark its just going to be a cold washer. I will call you today and explain.

 

[Mark]

I will be in my office between 8:00 AM and 11:00 AM PDT, will be out in the field the rest of the day.

 

[oguard]

4.7 @ 5800 would require (according to the fromula from Cat Pumps) (4.7 x 5800)/1460=Electric Brake HP (a constant result)

EBHP x 1.5 (real world difference)= Gasoline engine HP or 28 hp

Therefore you would need the Kohler Command Pro 28 to efficiently run what you want. Or you could use a 23 hp Lombardini diesel.

25 hp is arrived at using the suspect (flow x pressure)/1100 which uses an engineering theoretical determination assuming 85% efficiency of every component working as specified. There are published performance standards for electric motors which is why I choose to use the determination for EBHP.

The 1.5 factor is a field proven conversion to gasoline engine requirements. Remember that a 13 hp engine is only that because the manufacturer says it is so. There are no published standards for arriving at a consistent performance number for gasoline engines.

Regardless of your requirement for such a machine it would be in your best interests to size up your power supply to prevent performance anxiety.

Hope this helps? Cheers.