Part Number ME0903 and Part Number ME1707 from Motenergy, Inc in one package.  Pelton Water Wheel and Aluminum Adapter.  The Adapter has a 7/8 inch hole, 3/16" keyway.  Comes with 4 stainless steel bolts to mount the wheel to the adapter.

The Pelton-type water wheel is for Hydro-Electric generation projects.  It measures 8.03 inches in diameter (204 mm).  It has 12 die-cast aluminum cups that are bolted to a center hub.  The hub has a hole in the center with a diameter of 0.786 inches (20 mm), and 8 additional 0.193 inch (5 mm) holes on a 1.38 inch (35 mm) bolt circle. This water wheel is brand new.

This is an Aluminum Wheel made for long life, not Plastic. 

Each "cup" has an outside diameter is 1.820 inches (46 mm).  The inside diameter is 1.460 (37 mm), and the total height is .700 inches (17.8 mm).  The deepest part of the cup is about 0.400 inches (10.1 mm).


For larger diameter wheels, simply make a larger center hub and bolt the cups to the new hub. 
The nozzle should be located about 3.5 inches from the center of the wheel, tangent to the diameter.  This will provide the most torque and power.

The Aluminum Adapter is made to mount any of the Motenergy PM Generators (Sold separately).  We have 4 different models of generator available.

ME1016 for 12 to 24 volt systems, 1 to 2kw continuous
ME1603 for 24 to 48 volt systems, 1.2 to 2.5 kw continuous
ME1112 for 120 to 240 volt systems, 2 to 4 kw continuous
ME1211 for 240-489 volt systems, 500 watts continuous

or you can use your own generator.