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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Timing Gear Set Up
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<blockquote data-quote="greg brillus" data-source="post: 133727" data-attributes="member: 597"><p>Steve, If you have access to a lathe and a good length of emery tape, you can linish to size the oversized end (only) of each spindle. It would be nice to have a range of "Go no go " gauges, but you can use the spindles them selves to work it out. The difficulty is the sizing of the new spindles verses how much heat you can get into the case.......On a stripped engine, you can simply put the case half in the kitchen oven to get the case up to the proper temp........using a flame or similar, the engine acts like a giant heat sink and it is quite hard to get enough heat into it. Don't use an Oxy as this is too intense........ The larger (cam) spindles you want 0.001 to 0.0015 max over size, any more and it will be very difficult to get it home. The smaller spindles, a half to max 0.001" is plenty.......remember they are only small in diameter........If the valve lifter spring arrangement is close by the heat from a naked flame will destroy the spring so either remove it or mask it off with a bent piece of alloy strip or whatever you can use to cover it. I use one of those MAP gas butane heat torches, like the plumbers use.......It has the Turbo type head, and it puts out a huge amount of heat........perfect for these kind of jobs, I use it all the time..........Maughan's have been around Vincent's since JC was a pup........... Cheers........ Greg.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 133727, member: 597"] Steve, If you have access to a lathe and a good length of emery tape, you can linish to size the oversized end (only) of each spindle. It would be nice to have a range of "Go no go " gauges, but you can use the spindles them selves to work it out. The difficulty is the sizing of the new spindles verses how much heat you can get into the case.......On a stripped engine, you can simply put the case half in the kitchen oven to get the case up to the proper temp........using a flame or similar, the engine acts like a giant heat sink and it is quite hard to get enough heat into it. Don't use an Oxy as this is too intense........ The larger (cam) spindles you want 0.001 to 0.0015 max over size, any more and it will be very difficult to get it home. The smaller spindles, a half to max 0.001" is plenty.......remember they are only small in diameter........If the valve lifter spring arrangement is close by the heat from a naked flame will destroy the spring so either remove it or mask it off with a bent piece of alloy strip or whatever you can use to cover it. I use one of those MAP gas butane heat torches, like the plumbers use.......It has the Turbo type head, and it puts out a huge amount of heat........perfect for these kind of jobs, I use it all the time..........Maughan's have been around Vincent's since JC was a pup........... Cheers........ Greg. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Timing Gear Set Up
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