Hello. I have a ford 9030 Versitile tractor that has front and rear PTOs and the rear has both 1000 and 540. Anyways the tractor is rated as having 116 gross hp and 102 PTO hp. Well I am adapting a Tiger mower attachment to it that normally uses a high output pump that was designed to mount directly off of the front of the crankshaft of a tractor engine. This would allow the pump to turn up to about 2400 engine rpm. At the max 2400 rpm it requires around 100 hp input to put out 58 gpm at 2750 psi.
Now for my application I have to use this (or another) pump to be driven off of one of my PTO shafts instead of the engine crankshaft.
If I use this engine driven pump off of my PTO it wont turn at any near the 2400 rpms required but at most 1000 rpms with the 1000 rpm PTO and the engine turning at 2400 rpm. At this 1000 pump rpm the pump only puts out around 24 gpm.
First I thought of using a Gearmore PTO pump but their largest 9.9 cu in. model does not put out the same 58 gpm output and only has a max of 40 gpm and at only a measly 2000 psi. So I have figured a way to get my pump to turn at the same rpms as the engine using my the 1000 rpm pto and some gear reduction. Well that brings me to a more basic question. If I add a gear ratio to my 1000 pto to turn the pump at 2.4 times will it still put out 100 hp to the pump that it requires? I am confused as to how with all the different gearing (engine at 116 hp at 2400 rpm, 1000 PTO at 102 hp at 1000 rpm and other 540 PTO at 102 hp at 540 rpm) how does the HP rating stay so close to each other. You would think the rpms and gear ratios would change the HP ratings. In my case it seems that the original 116 hp engine HP is, with factory gearing turned it down to 1000 rpms to the pto shaft and at a 102hp rating then I am with gearing turning it back to mimick engine speed but will it still be able to turn this pump requiring 100 hp at 2400 rpm?
Now for my application I have to use this (or another) pump to be driven off of one of my PTO shafts instead of the engine crankshaft.
If I use this engine driven pump off of my PTO it wont turn at any near the 2400 rpms required but at most 1000 rpms with the 1000 rpm PTO and the engine turning at 2400 rpm. At this 1000 pump rpm the pump only puts out around 24 gpm.
First I thought of using a Gearmore PTO pump but their largest 9.9 cu in. model does not put out the same 58 gpm output and only has a max of 40 gpm and at only a measly 2000 psi. So I have figured a way to get my pump to turn at the same rpms as the engine using my the 1000 rpm pto and some gear reduction. Well that brings me to a more basic question. If I add a gear ratio to my 1000 pto to turn the pump at 2.4 times will it still put out 100 hp to the pump that it requires? I am confused as to how with all the different gearing (engine at 116 hp at 2400 rpm, 1000 PTO at 102 hp at 1000 rpm and other 540 PTO at 102 hp at 540 rpm) how does the HP rating stay so close to each other. You would think the rpms and gear ratios would change the HP ratings. In my case it seems that the original 116 hp engine HP is, with factory gearing turned it down to 1000 rpms to the pto shaft and at a 102hp rating then I am with gearing turning it back to mimick engine speed but will it still be able to turn this pump requiring 100 hp at 2400 rpm?