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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Brake Drum Cracked.
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<blockquote data-quote="Vincent Brake" data-source="post: 9553" data-attributes="member: 398"><p>Vic, they must be of ordinary cast like GG25 for they machine realy easy ( i do a lot of trueing up when installing a 2x2 brake.)</p><p>They are also a bad fit, as they lay on everywhere but for the earea under the bolts, so we machine them back, near the spokes, and make the flange fit diameter a 3 mm bigger.</p><p>For material I would chose nodulair cast like GGG40 its less britle but harder to machine.(am going to make a small batch of ALU hubs with this as liner schrunk into it. </p><p>Vincent Speet</p></blockquote><p></p>
[QUOTE="Vincent Brake, post: 9553, member: 398"] Vic, they must be of ordinary cast like GG25 for they machine realy easy ( i do a lot of trueing up when installing a 2x2 brake.) They are also a bad fit, as they lay on everywhere but for the earea under the bolts, so we machine them back, near the spokes, and make the flange fit diameter a 3 mm bigger. For material I would chose nodulair cast like GGG40 its less britle but harder to machine.(am going to make a small batch of ALU hubs with this as liner schrunk into it. Vincent Speet [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Brake Drum Cracked.
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