engine hp to pump gpm capacity?

[woodchukker]

can anyone give me a ratio for required engine hp to pump gpm. getting ready to do a splitter build and starting to get my parts around. I might have a used 13 hp honda lined up. I thought I saw info regarding pump requierments but can't seem to find it anywhere on website. any help would be greatly appreciated.

 

[kevin j]

psi x gpm / 1714 is theoretical hydr hp for a pump

psi x gpm /1500 is conservative to account for mechanical losses, and easier for most people to remember.

With a two stage pump, check both conditions:
1. high flow gpm at unloading pressure usually 600 to 900, but it can be adjusted)

2. low flow at high pressure (relief valve pressure of 2500 or 3000 or whatever you set to )

baum has a work sheet but it is simple math.

k

 

[ray benson]

The 13 hp Honda could drive a 22 gpm 2-stage pump. Here is some 2-stage pumps with hp requirements.
http://www.surpluscenter.com/sort.asp?UID=2356031512391427&catname=hydraulic&keyword=HP2S

 

[woodchukker]

engine hp to pump gpm

thanks guys, iwas thinking a 22 gpm would work but wanted some others input. I'm going to build a splitter resembling splitrite,built rite,etc, but wth/out all the frills. currently have a husky 35 ton, haven't found anything it won't split but need to speed up splitting operation in son's firewood business. he's still in high school and needs to be able to get more done in the amount of time he can work after school.

 

[STLfirewood]

He needs to do what I did in high school. Half the big ones with the splitter then swing a maul. If your in shape you can get a lot split in a short time with a good maul.

Scott

 

[bayard]

11 hp

i have a 11 hp running 22 gal pump,4.5 dia. cyl. 11 seconds down and back.works great.kenny

 

[mariocoe]

I hope this helps ,a copy of my email.

We appreciate your contacting NorthernTool.com.

Regarding the hydraulic pump with 29 GPM.

This pump will require a 12 HP or larger direct drive horizontal shaft engine.

Item number 3031 is the 4 bolt pump mounting bracket that is 3 5/" bolt circle and 5 5/8" long. This is usually is for up to a 10 HP engine only.

We do offer mounting brackets for the 12 HP engines depending on the engine used.

When placing your order online, where the order form asks for a rep number, please input 259.

Ask about our new and improved Hotline members catalogs to learn how you can get lower prices and free shipping. http:/www.northerntool.com/hotline/

Please let me know if we can be of further assistance.


Thank you!!!
Irene
Representative #259

www.NorthernTool.com
Sales Specialist
Northern Tool + Equipment
1.800.221.0516 Ext. 8059

*Please include previous correspondence for immediate assistance

 

[Truck4]

I working on putting one together now just need some of the small misc. stuff, I have a 16hp B&S motor already had it and was given a brand new barnes 16gpm 2 stage pump do you guys think this combination will be ok, Am thinking of getting a 5" bore cylinder with a 2" rod and 20" throw....what do you guys think? Thanks

Roy

 

[Haywire Haywood]

You probably don't need a 5" cylinder. I'd go for a 4 or 4.5 max. Plenty of power for most applications and it won't slow you down like the 5" will. With that 16hp engine running it, you will be able to adjust the pump to stay in high gear longer before it kicks down. That will be a pretty good advantage.

Ian

 

[mariocoe]

my speeco 3 point has a 5" and it seems slow

and im pushing it with a 500 rpm 20 gallon prince pump, and im spinning it at 1000rpm, but the tractor is a little above idie.

 

[Truck4]

You probably don't need a 5" cylinder. I'd go for a 4 or 4.5 max. Plenty of power for most applications and it won't slow you down like the 5" will. With that 16hp engine running it, you will be able to adjust the pump to stay in high gear longer before it kicks down. That will be a pretty good advantage.

Ian

Thank you for the input, guess I should have mentioned that 99% of the wood I deal with is pecan so its hard.....kinda new to hydraulics (in this application at least) but once I have things together how do I adjust the pump? thanks again

Roy