Pocket bike chain wheel hub for Infento hex axles
thingiverse
Electric DC motors ranging from 250 to 1000 watts, as well as pocket bike 2-stroke engines, utilize a T8F (small) or a 25H (large) chain, which are commonly secured by four M6 bolts sitting on a 4x90-degree PCD of 65mm, and a locating diameter of 52mm. This adapter allows you to bolt such a chainwheel onto an Infento axle. You can view a video of one ride where it was used here: https://youtu.be/yXhKTydlweY. The image shows the initial version. It broke during a burnout with a 7HP engine, so I created a reinforced version that should meet all your needs. The STL file contains this new design. Through holes are 8mm to accommodate hat bushings. This enables you to tighten the M6 bolts without damaging the part.
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