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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Request for a Mudguard Measurement
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<blockquote data-quote="greg brillus" data-source="post: 152378" data-attributes="member: 597"><p>Well I don't wish to say the wrong thing, but the newer thicker guards are made from the same soft alloy the earlier thin ones were.......Modern equivalent it might seem, but it certainly is not as strong as the originals.......Birmabright used also to make the bodies for early Land Rover's is a clad type alloy very similar to aircraft alloy, but not quite so........It tends to suffer surface corrosion not unlike aircraft sheet alloy in that it develpes a "worm like" pattern that forms on the outer skin. As a side note, it is worth adding extra strength in the form of a doubler on the inner attachment point at the fixing on the rear frame just aft of the spring box attachment. This area is very prone to cracks forming in the guard.........It is worth cutting to shape a section of an old guard, or sheet steel about 1mm thick, around 30 mm wide and near enough in length to run across the full inner radius of the guard........you then bond this to the main guard with some Sikaflex adheasive or similar.......this will add plenty of extra strength here and should resist cracks unless you tend to go "Off roading" with your bike.........It is not easy to see in situ, so no eyes will be offended by it.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 152378, member: 597"] Well I don't wish to say the wrong thing, but the newer thicker guards are made from the same soft alloy the earlier thin ones were.......Modern equivalent it might seem, but it certainly is not as strong as the originals.......Birmabright used also to make the bodies for early Land Rover's is a clad type alloy very similar to aircraft alloy, but not quite so........It tends to suffer surface corrosion not unlike aircraft sheet alloy in that it develpes a "worm like" pattern that forms on the outer skin. As a side note, it is worth adding extra strength in the form of a doubler on the inner attachment point at the fixing on the rear frame just aft of the spring box attachment. This area is very prone to cracks forming in the guard.........It is worth cutting to shape a section of an old guard, or sheet steel about 1mm thick, around 30 mm wide and near enough in length to run across the full inner radius of the guard........you then bond this to the main guard with some Sikaflex adheasive or similar.......this will add plenty of extra strength here and should resist cracks unless you tend to go "Off roading" with your bike.........It is not easy to see in situ, so no eyes will be offended by it. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Request for a Mudguard Measurement
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