[QUOTE=Wishbonez51;133246]Hello gang,
Ok I have the bug to build my very own front end loader.
WishBone, keep in mind your building a loader on a Garden Tractor,
It doesn't weigh alot thus it won't lift alot. With that being said the "Bore" of your cylinders needs to be about 2" this will give the shaft 1".
Now the most important part by far other than GPM vs RPMs is the distance where your lift rams are in relation to the pivot of your loader arms.
Lower they are more power they will have "more perpendicular to the loader arms I should say" BUT them being mounted closer to the pivot will give you higher lift.
My suggestion would be SMASH THE BUG build the loader first, then with a engine hoist etc move the loader up and down to determine mounting points.
Parker pumps are great gear driven pumps yes as said below a single gear pump 6-10 GPM is about what you need. Less the better GPM will ultimately determine how fast your loader operates. Too many GPM will make u scrap the whole idea.
And as said by others here heating probs resivor size problems etc.
Pump PSI never changes, GPM determines how fast the pump can build that pressure up in your cylinders. Worst case scenario with a pump with too little GPM is the loader will bore you to death and be very slow, but just as powerful. Northern tool sells "joystick" type valve with spring detent return to nuetral w/ nuetral bypass
All valves, cylinders, etc need to have about the same GPms.
If your familiar with PSI and CFM of air compressors and air tools? It's the same beast!! Just imagine you using Hydro oil instead of air
Hope this helps!!!!