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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Gear for ATD - Material and Dealer?
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<blockquote data-quote="chankly bore" data-source="post: 31454" data-attributes="member: 317"><p>Taking the ATD apart is not hard. The unit is held together by a punch-locked ring on the inner side of the gear. Take a note of where everything is before taking it apart. My advice is to do it inside an ice cream 4 litre tub or similar as there are small washers that can fly away. You will need four new rivets, part no. 1115, and a new pair of springs, part no. PR22 A/D. Gears were originally made of "Tufnol", a layered resin product. Some earlier nylon products were tried, but enlarged in service. I believe the current Spares Co. ones are o.k. Before disassembly, check for range of movement, about 16 degrees is good (32 degrees crankshaft) and check that the stop "ears" are not deformed. If this gets too complicated, order a new one from Price Products (in MPH) they are beautifully made. Never use a metal gear, it overloads the magneto bearings and can track current.</p></blockquote><p></p>
[QUOTE="chankly bore, post: 31454, member: 317"] Taking the ATD apart is not hard. The unit is held together by a punch-locked ring on the inner side of the gear. Take a note of where everything is before taking it apart. My advice is to do it inside an ice cream 4 litre tub or similar as there are small washers that can fly away. You will need four new rivets, part no. 1115, and a new pair of springs, part no. PR22 A/D. Gears were originally made of "Tufnol", a layered resin product. Some earlier nylon products were tried, but enlarged in service. I believe the current Spares Co. ones are o.k. Before disassembly, check for range of movement, about 16 degrees is good (32 degrees crankshaft) and check that the stop "ears" are not deformed. If this gets too complicated, order a new one from Price Products (in MPH) they are beautifully made. Never use a metal gear, it overloads the magneto bearings and can track current. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Gear for ATD - Material and Dealer?
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