four speed gearbox Free 3D print model
cgtrader
A four speed gearbox. A work in progress. Apologies for rubbish camera phone photos. The gear cassette can be printed. A H-pattern shifter is in progress. The gears have the following teeth / ratios 1st 40 18 2.22 2nd 38 22 1.72 3rd 36 26 1.38 4th 32 32 1.00 The gears, hubs etc sit on 8mm threaded rod and are held in place by jam nuts either end. The threaded rod passes through some stands but really some bearings are needed in the future. You can edit the CSG source using Ringtail from http://splod67.com
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