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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Laney Thornton suspension
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<blockquote data-quote="davidd" data-source="post: 47115" data-attributes="member: 1177"><p>I had a buckling problem. I made a extended inner spring boxed for the rear so that the Thornton springs would work properly because they were so much longer. I was racing at Deland and I came into the pits and Sam Manganaro noticed that the left side inner spring box had come completely off the the end of the spring and cocked. I put it back on and checked the other side and found that the inner spring box had worn through the top of the outer spring box and as it went through its motion it was sticking on this metal to metal contact. This was seemingly caused by the added bending of the longer rear springs. After the race I set about making a coil over. I decided that the springs and spring boxes were too much, too high maintenance and too heavy. On my street bike I used a UHMW slip ring to steady and hold the box in place with the longer springs. Justin MacKay-Smith made these for a few years about 15 years ago and they were quite good at the job. A few years later, Thornton started making coil over rears and this is the best solution for the rear suspension. I understand that many prefer the stock look instead.</p><p><a href="http://s1017.photobucket.com/user/daviddunfey/media/100_1600_zps3f7e9a5f.jpg.html" target="_blank"><img src="http://i1017.photobucket.com/albums/af300/daviddunfey/100_1600_zps3f7e9a5f.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p><a href="http://s1017.photobucket.com/user/daviddunfey/media/100_1602_zps5ba4b3da.jpg.html" target="_blank"><img src="http://i1017.photobucket.com/albums/af300/daviddunfey/100_1602_zps5ba4b3da.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 47115, member: 1177"] I had a buckling problem. I made a extended inner spring boxed for the rear so that the Thornton springs would work properly because they were so much longer. I was racing at Deland and I came into the pits and Sam Manganaro noticed that the left side inner spring box had come completely off the the end of the spring and cocked. I put it back on and checked the other side and found that the inner spring box had worn through the top of the outer spring box and as it went through its motion it was sticking on this metal to metal contact. This was seemingly caused by the added bending of the longer rear springs. After the race I set about making a coil over. I decided that the springs and spring boxes were too much, too high maintenance and too heavy. On my street bike I used a UHMW slip ring to steady and hold the box in place with the longer springs. Justin MacKay-Smith made these for a few years about 15 years ago and they were quite good at the job. A few years later, Thornton started making coil over rears and this is the best solution for the rear suspension. I understand that many prefer the stock look instead. [URL=http://s1017.photobucket.com/user/daviddunfey/media/100_1600_zps3f7e9a5f.jpg.html][IMG]http://i1017.photobucket.com/albums/af300/daviddunfey/100_1600_zps3f7e9a5f.jpg[/IMG][/URL] [URL=http://s1017.photobucket.com/user/daviddunfey/media/100_1602_zps5ba4b3da.jpg.html][IMG]http://i1017.photobucket.com/albums/af300/daviddunfey/100_1602_zps5ba4b3da.jpg[/IMG][/URL] David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Laney Thornton suspension
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