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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Design improvements for the BT-H?
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<blockquote data-quote="minivin" data-source="post: 42215" data-attributes="member: 643"><p>Morning Gents and Ladies,</p><p></p><p>I have been thinking on a few problems on the BT-H over the past few weeks and now I have solved the problem of starting the bike, I thought I would note some issues I have come across and wondered whether anyone else has found any undesirable design issues?</p><p></p><p>First problem I had with the twin spark variant for a Comet was that the extension for the coil mountings, meant that the outer ignition coil was fitted "through" the magneto cowl. Picture of mounting tab below:</p><p></p><p><a href="http://smg.photobucket.com/user/minivin/media/DSCF6959.jpg.html" target="_blank"><img src="http://img.photobucket.com/albums/v245/minivin/th_DSCF6959.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>I then cut-down the tab to that which I believe is the standard size for a single spark model and refitted the inner coil and confirmed the magneto cowl now fitted:</p><p></p><p><a href="http://smg.photobucket.com/user/minivin/media/DSCF6960.jpg.html" target="_blank"><img src="http://img.photobucket.com/albums/v245/minivin/th_DSCF6960.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>Using some stainless sheet I have in the workshop, I made an "L" tab of 3/4" x 3/4" (or there abouts, I didn't make any notes) and fitted the second coil to the front of the BT-H and this now allowed the magneto cowl to fit:</p><p></p><p><a href="http://smg.photobucket.com/user/minivin/media/DSCF6964.jpg.html" target="_blank"><img src="http://img.photobucket.com/albums/v245/minivin/th_DSCF6964.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>I did have to extend the wires to the second coil, I also had to fit flag terminals to the wires to prevent the wires chaffing the spring and mechanism of the prop stands.</p></blockquote><p></p>
[QUOTE="minivin, post: 42215, member: 643"] Morning Gents and Ladies, I have been thinking on a few problems on the BT-H over the past few weeks and now I have solved the problem of starting the bike, I thought I would note some issues I have come across and wondered whether anyone else has found any undesirable design issues? First problem I had with the twin spark variant for a Comet was that the extension for the coil mountings, meant that the outer ignition coil was fitted "through" the magneto cowl. Picture of mounting tab below: [URL="http://smg.photobucket.com/user/minivin/media/DSCF6959.jpg.html"][IMG]http://img.photobucket.com/albums/v245/minivin/th_DSCF6959.jpg[/IMG][/URL] I then cut-down the tab to that which I believe is the standard size for a single spark model and refitted the inner coil and confirmed the magneto cowl now fitted: [URL="http://smg.photobucket.com/user/minivin/media/DSCF6960.jpg.html"][IMG]http://img.photobucket.com/albums/v245/minivin/th_DSCF6960.jpg[/IMG][/URL] Using some stainless sheet I have in the workshop, I made an "L" tab of 3/4" x 3/4" (or there abouts, I didn't make any notes) and fitted the second coil to the front of the BT-H and this now allowed the magneto cowl to fit: [URL="http://smg.photobucket.com/user/minivin/media/DSCF6964.jpg.html"][IMG]http://img.photobucket.com/albums/v245/minivin/th_DSCF6964.jpg[/IMG][/URL] I did have to extend the wires to the second coil, I also had to fit flag terminals to the wires to prevent the wires chaffing the spring and mechanism of the prop stands. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Design improvements for the BT-H?
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