Two of the biggest problems with making your own water wheel are how to mount a metal axle into a wood hub and trying to get the axle exactly square to the wheel. An axle 1/4" out of square can make a 6 foot wheel wobble 1 1/2" inches. This adjustable metal hub plate allows you to adjust your axle so that you can minimize wheel wobble and it also allows you to balance your wheel when the balance changes due to waterlogging. These sets includes 2 adjustable hub plates, 2 industrial grade bearings and a steel axle. The axle ends are machined slightly undersized to slide easily into the bearings. Shipping may seem expensive but these are heavy and ship in 2 boxes. I don't make any money on the shipping. Shipping prices good within the contintal US only. Custom hub sizes, axles, and machining is available.
6 1/2" adjustable hub plate set with 28" long axle and bearings for smaller wheels $240 shipping $40
7 1/2" adjustable hub plate set comes with a 1"x 28" axle and bearings and works well for most wheels up to 5 feet (up to 120 lbs dry weight) $240 shipping $40
9" adjustable hub plate set with 1 3/4" x 34" solid steel axle and bearings $310 shipping $85 (66 lbs of solid steel)
10 1/4" adjustable hub plate set with a 1 3/4"x 34" axle and bearings and will handle most wheels from 5 to 8 feet $320 shipping $85 (68 pounds of solid steel)
13" adjustable hub plate set (great size if you are using 8 roughcut 2x4 spokes) with 1 3/4" x 34" solid steel axle and pillowblock bearings $340 shipping $100
15" adjustable hub plate set with a 1 3/4" x 34" axle and bearings and will handle most wheels from 7 to 9 feet (up to 600 lbs dry weight) with 8 or 12 spokes. $380 shipping $110
note: since different people use different numbers of spokes these hub plates don't have the bolt holes for the spoke bolts drilled in them. You will need to drill them yourself or give me a call and my machinist can predrill the holes for you to match up with your spokes (about $25 - $40)
If you plan to use your water wheel to make power you will need "power flats" milled into the axle and one end turned down to 1.5" with a keyway to connect to your pulley, sprocket. or coupling. $ 60
These prices are what my machinist charges me, I make no profit on these machining options.