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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
Side car for FJR
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<blockquote data-quote="mcatrophy" data-source="post: 1440316" data-attributes="member: 3187"><p>A quote from the handbook:</p><p></p><p></p><p>While I ignore Yamaha's instructions concerning side cases and top box, I would be very doubtful about attaching a sidecar. The frame is aluminium alloy, designed for stresses mainly in the vertical plain (or rather straight through the centre line - even when cornering hard the stresses are still in the same direction as far as the bike is concerned).</p><p></p><p>Attaching a sidecar would put considerable sideways stress on the attachment points, as will as side loading on wheels and bearings. They were never designed for this. </p><p></p><p>It's not like the good old days when frames were made of steel tubing that was unlikely to fatigue crack (and in any case was probably over-strong since design was much more empirical) and tyres had not a lot of grip.</p></blockquote><p></p>
[QUOTE="mcatrophy, post: 1440316, member: 3187"] A quote from the handbook: While I ignore Yamaha's instructions concerning side cases and top box, I would be very doubtful about attaching a sidecar. The frame is aluminium alloy, designed for stresses mainly in the vertical plain (or rather straight through the centre line - even when cornering hard the stresses are still in the same direction as far as the bike is concerned). Attaching a sidecar would put considerable sideways stress on the attachment points, as will as side loading on wheels and bearings. They were never designed for this. It's not like the good old days when frames were made of steel tubing that was unlikely to fatigue crack (and in any case was probably over-strong since design was much more empirical) and tyres had not a lot of grip. [/QUOTE]
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Side car for FJR
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