I designed a new sprocket hub that allows a 55 tooth #25 chain sprocket to attached to a 10″ pneumatic tire wheel. The sprocket hub’s design allows it to be welded onto the the end of the wheel’s 1.5″ rim hub. Custom welding jigs are used to ensure that the sprocket is concentrically aligned with the wheel axle and there is no side-to-side wobble of the sprocket as it rotates. The welding jigs consist of a clamping bolt through both the rim and sprocket hubs, securely holding the sprocket hub plate against the end of the rim hub behind the flange bearing, and an internal copper cylinder matching the inner diameters of the rim and sprocket hubs. Four half-circle plug welding holes near the ID of the sprocket hub allow for easy welding on the accessible side of the weld locations.
To see pictures of the assembled wheel, sprocket and sprocket hub, visit the Shop link above.
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