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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman lube questions...
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<blockquote data-quote="A_HRD" data-source="post: 116168" data-attributes="member: 49"><p>Matty,</p><p></p><p>An excellent summary, thank you! Two things though:</p><p></p><p>1. I understand that the modified Draganfly seal arrangement is supposed to be held in by the friction of the associated shims and washers under the outer circlip. But if that proves to be insufficient, what stops the whole seal-assembly turning? </p><p></p><p>2. I'm currently building two Series A gearboxes from what I believe to be early 1940s Ariel originals. (1BAPM/3 casting numbers). It has come to my notice that there are 2 different lengths of main bearing housings. I note the Draganfly website mentions it too. One is 11/16 inch from rear of housing to circlip groove, the other (and most postwar) is 13/16 inch. The seal mod fits nicely in to the 13/16 long housings but not so in the 11/16 ones - or at least not without some changes and considerable ingenuity. (This is just a "heads-up" in case anyone gets in to difficulties with fitting the seal mod). </p><p></p><p>Peter B</p></blockquote><p></p>
[QUOTE="A_HRD, post: 116168, member: 49"] Matty, An excellent summary, thank you! Two things though: 1. I understand that the modified Draganfly seal arrangement is supposed to be held in by the friction of the associated shims and washers under the outer circlip. But if that proves to be insufficient, what stops the whole seal-assembly turning? 2. I'm currently building two Series A gearboxes from what I believe to be early 1940s Ariel originals. (1BAPM/3 casting numbers). It has come to my notice that there are 2 different lengths of main bearing housings. I note the Draganfly website mentions it too. One is 11/16 inch from rear of housing to circlip groove, the other (and most postwar) is 13/16 inch. The seal mod fits nicely in to the 13/16 long housings but not so in the 11/16 ones - or at least not without some changes and considerable ingenuity. (This is just a "heads-up" in case anyone gets in to difficulties with fitting the seal mod). Peter B [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman lube questions...
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