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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Rear Inner Spring Boxes
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<blockquote data-quote="timetraveller" data-source="post: 125931" data-attributes="member: 456"><p>I have some doubts about putting plastic spacers in various places. The clearance between the inner and outer tubes is small ( I can't give a figure at the moment) but certainly thous rather than tenths. There is also quite a long distance between the top of the inner tube and the bottom of the outer. Plenty of distance to allow some tilting unless the plastic is quite long. It also has to be realised that if the fit is too good it will act like a pump and a hole will have to be included to prevent pneumatic compression. When I was trying to source ss tube to make the adjustable inners I was told that the tube now comes from Italy via the fabricator. Then a member (sorry but do not have access to your name at the moment) put me on to a firm in the UK from which he had got some tube. When I contacted them they could no longer obtain it so I bought the correct ID from them and then had it bored. Remember that my background is not engineering, I just muddle on the best that I can and it is possible that someone with the right background might do better than me. The problem with all these parts is that they are needed in such small quantities that one has to use off the shelf sizes as it is uneconomic to get the right sizes made in small amounts.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 125931, member: 456"] I have some doubts about putting plastic spacers in various places. The clearance between the inner and outer tubes is small ( I can't give a figure at the moment) but certainly thous rather than tenths. There is also quite a long distance between the top of the inner tube and the bottom of the outer. Plenty of distance to allow some tilting unless the plastic is quite long. It also has to be realised that if the fit is too good it will act like a pump and a hole will have to be included to prevent pneumatic compression. When I was trying to source ss tube to make the adjustable inners I was told that the tube now comes from Italy via the fabricator. Then a member (sorry but do not have access to your name at the moment) put me on to a firm in the UK from which he had got some tube. When I contacted them they could no longer obtain it so I bought the correct ID from them and then had it bored. Remember that my background is not engineering, I just muddle on the best that I can and it is possible that someone with the right background might do better than me. The problem with all these parts is that they are needed in such small quantities that one has to use off the shelf sizes as it is uneconomic to get the right sizes made in small amounts. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Rear Inner Spring Boxes
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