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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Which is better? 20/21 or 19/20 rims? Cross 3 or cross 4 spokes lacing? pattern??
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<blockquote data-quote="Spqreddie" data-source="post: 83719" data-attributes="member: 1009"><p>Hi All, </p><p>i saw this thread coming up again, and given i started i tought i could report on my progress,</p><p>here a few pictures of my wheels coming togheter.</p><p></p><p>I had the rims specially made here in Italy by a rim factory. Not by "Borrani" (i am not even sure if they still prduce in italy or not), but another one.</p><p></p><p>They do not normally produce them but thye had the right valanced alloy bar to made them to my specs. I wanted 21 in front and 20 at the rear but not in the standard WM1 and WM2 but had them made WM2 in fron and WM3 at the rear so the wheels are:</p><p></p><p>- Safety bedded alloy racing type rims a la "Borrani Record"</p><p></p><p>- 21 WM2 in front on a 250mm Fontana 4 leading shoes brake hub</p><p></p><p>- 20 WM 3 for the rear with regular Vincent brakes on a 10 holes hub</p><p></p><p>- 3,5 mm regular spokes (no sainless steel), front and rear</p><p></p><p>Rims widht is, as said, a bit larger than original, but hopefully a bit more tyre surface will allow for for better braking (given also i am using a bigger brake!), hopefully without affecting too much handling.</p><p></p><p>I have bought an Avon Speed Master for the front an Avon SM for the rear.. a bit squared but the only tyre available in 20...</p><p>I have spoken with an Avon engineer and he explained me that the ribbed speed master is actually desinged for a WM2 widht rim (but ok on a WM1 and to WM3), and the SM for a WM3 rim (but Ok from WM2 to WM4).</p><p></p><p>The wheel bulider told me that he laced them "in seconda" in front and "in terza" at the back, i guess this should mean "cross four at the rear" and "cross three" at the front. He said he couldnt aceive better given the angle of the large fontana brake.</p><p></p><p>[ATTACH=full]16655[/ATTACH] [ATTACH=full]16656[/ATTACH] [ATTACH=full]16657[/ATTACH] [ATTACH=full]16658[/ATTACH]</p></blockquote><p></p>
[QUOTE="Spqreddie, post: 83719, member: 1009"] Hi All, i saw this thread coming up again, and given i started i tought i could report on my progress, here a few pictures of my wheels coming togheter. I had the rims specially made here in Italy by a rim factory. Not by "Borrani" (i am not even sure if they still prduce in italy or not), but another one. They do not normally produce them but thye had the right valanced alloy bar to made them to my specs. I wanted 21 in front and 20 at the rear but not in the standard WM1 and WM2 but had them made WM2 in fron and WM3 at the rear so the wheels are: - Safety bedded alloy racing type rims a la "Borrani Record" - 21 WM2 in front on a 250mm Fontana 4 leading shoes brake hub - 20 WM 3 for the rear with regular Vincent brakes on a 10 holes hub - 3,5 mm regular spokes (no sainless steel), front and rear Rims widht is, as said, a bit larger than original, but hopefully a bit more tyre surface will allow for for better braking (given also i am using a bigger brake!), hopefully without affecting too much handling. I have bought an Avon Speed Master for the front an Avon SM for the rear.. a bit squared but the only tyre available in 20... I have spoken with an Avon engineer and he explained me that the ribbed speed master is actually desinged for a WM2 widht rim (but ok on a WM1 and to WM3), and the SM for a WM3 rim (but Ok from WM2 to WM4). The wheel bulider told me that he laced them "in seconda" in front and "in terza" at the back, i guess this should mean "cross four at the rear" and "cross three" at the front. He said he couldnt aceive better given the angle of the large fontana brake. [ATTACH=full]16655[/ATTACH] [ATTACH=full]16656[/ATTACH] [ATTACH=full]16657[/ATTACH] [ATTACH=full]16658[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Which is better? 20/21 or 19/20 rims? Cross 3 or cross 4 spokes lacing? pattern??
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