Super Star Member
- Apr 7, 2015
- Crossville, TN
- Kubota M59, Kubota L3800, Grasshopper 428D, Topkick dump truck, 3500 dump truck, 10 ton trailer, more lighter trailers.
To continue splitting hairs that don't make much difference; the PTO drive does not go through the HST, so there is no power to be lost to the PTO because of a HST. So if the tractor is stationary the PTO HP on a HST or shuttle will be identical. If the tractor is being driven, engine hp is being used to both power the PTO and to move the tractor. The HST does use more of the engine hp to drive the tractor, making less available to the PTO. But in a situation such as mowing heavy brush where PTO hp is an important consideration, the PTO is usually consuming the bulk of the engine HP while moving the tractor isn't using much power at all, so the real world difference is quite negligible. However in the extremely rare instances you are mowing thick brush while going up a steep hill at maximum speed in high range, you would likely see a noticeable difference.
Exactly. In the more reasonable comparison of mowing heavy grass on mostly flat ground there would be very little difference.