I have done some more looking and still cannot find a good source of ribbed pulleys.
So looking closer at sheaves for V belts in the Grainger catalog.
I can get a 15.4" and a 4.6" O.D. sheave. This gets me to 3.333 multiply factor.
These diameters are figuring a BX size belt.
Both sheaves accept a B type split taper bushing. The bushing for the small sheave needs to be 42mm or 1 11/16". I hope that is close enough. The bushing for the bigger sheave is arbitrarily selected at 1" for the input shaft.
So, have a 1" shaft machined so that the PTO shaft fits on one end. The shaft is supported by a couple of pillow blocks and the opposite end of the shaft has the large sheave on it driving the gen head.
Fabricate a frame and guard for the pulleys.
Are we there yet?
BTW, my tractor is 32HP PTO, I plan on getting a 20kW gen head. A little big for 32HP but the extra capacity won't hurt, I just won't make the full 20kW.
James
So looking closer at sheaves for V belts in the Grainger catalog.
I can get a 15.4" and a 4.6" O.D. sheave. This gets me to 3.333 multiply factor.
These diameters are figuring a BX size belt.
Both sheaves accept a B type split taper bushing. The bushing for the small sheave needs to be 42mm or 1 11/16". I hope that is close enough. The bushing for the bigger sheave is arbitrarily selected at 1" for the input shaft.
So, have a 1" shaft machined so that the PTO shaft fits on one end. The shaft is supported by a couple of pillow blocks and the opposite end of the shaft has the large sheave on it driving the gen head.
Fabricate a frame and guard for the pulleys.
Are we there yet?
BTW, my tractor is 32HP PTO, I plan on getting a 20kW gen head. A little big for 32HP but the extra capacity won't hurt, I just won't make the full 20kW.
James