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Tech. Advice: Series 'A' 500cc/1000cc Bikes
Miller Mag-Dyno Parts Needed
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<blockquote data-quote="A Nut" data-source="post: 163853" data-attributes="member: 2005"><p>You will have trouble using the Lucas geardrive components because the Lucas magnetos all have a 45mm drive height but the Miller (and BTH) use a 35mm shaft height. The late Bob Stafford said that you could mill 10mm off the bottom of the Lucas Magdyno and then mill the magneto platform (we are talking Series A here) to allow the tufnol gear to drop through. I have seen one pair of crankcases that had the platform removed probably after the mod went wrong. Nigel (the club bike) has had a toothed belt drive on it for years and gets quite a bit of use. The belt has broken probably twice but without any damage. My A Comet, Mitch Talcove's and a number of others are still using toothed belt drives. I originally used aluminium pulleys but they do wear. Anodizing them or better still using steel pulleys would be best. The duplex chains are an obsolete size and if they break they will usually wreck the magneto armature as the chain will wrap around the sprocket. With regard to using polyvee belts I don't think that the magneto bearings would stay in situ because of the tension needed to prevent slippage. I don't know of anyone making or selling sprockets to fit the Miller dynamo. Brian.</p></blockquote><p></p>
[QUOTE="A Nut, post: 163853, member: 2005"] You will have trouble using the Lucas geardrive components because the Lucas magnetos all have a 45mm drive height but the Miller (and BTH) use a 35mm shaft height. The late Bob Stafford said that you could mill 10mm off the bottom of the Lucas Magdyno and then mill the magneto platform (we are talking Series A here) to allow the tufnol gear to drop through. I have seen one pair of crankcases that had the platform removed probably after the mod went wrong. Nigel (the club bike) has had a toothed belt drive on it for years and gets quite a bit of use. The belt has broken probably twice but without any damage. My A Comet, Mitch Talcove's and a number of others are still using toothed belt drives. I originally used aluminium pulleys but they do wear. Anodizing them or better still using steel pulleys would be best. The duplex chains are an obsolete size and if they break they will usually wreck the magneto armature as the chain will wrap around the sprocket. With regard to using polyvee belts I don't think that the magneto bearings would stay in situ because of the tension needed to prevent slippage. I don't know of anyone making or selling sprockets to fit the Miller dynamo. Brian. [/QUOTE]
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Tech. Advice: Series 'A' 500cc/1000cc Bikes
Miller Mag-Dyno Parts Needed
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