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PULLEY DYNAMO ALI

Part No:
12G2102A

NOT AVAILABLE This part is no longer available

Dynamo aluminium pulley. Use this pulley if you are considering running a thin belt conversion to drive your dynamo. We use this pulley in our conversion kits. The part number for the standard fat belt pulley is 102266. See below

When assembling a pulley and dynamo the following dimensions will be useful: -
 
The pulley boss 102266 (original) has a depth of 19mm
Pulley 12G2102A boss depth of 20mm
the attachment nut is 6.6mm thick, the spring washer 1.6mm making a total 8.2mm  so the total protruding from the dynamo needs to be 27.2mm for it to work. Various dynamos measure between 26mm  and 30mm. The 26mm ones must not be used on TR's. As long as the dynamo has a 27-30mm shaft and thread all will be well.