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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Girdraulic vs girder - "B" vs "C" RFM - Handing issues
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<blockquote data-quote="Spqreddie" data-source="post: 46275" data-attributes="member: 1009"><p>Dear All, probably this has already been discussed in the past, therefore fell free to delete this post and address me to an older one,</p><p></p><p>but I would like to ask you if you think there is any sensible difference in handling between the B and C Rfm,</p><p>I', rebuilding my "B" Rapide with a C RFM and Girdraulic forks.</p><p></p><p>For the bike to be period correct, I would need a "B" RFM. If I eventually find one, could I still use it with the girdraulic at the font? I understand the difference being only 1/2 inch in length (a part from the seat stays and brake cable abutment) so it should be imperceptible to the average rider, right? Being shorter might even help cornering, while only slightly worsening high speed stability.</p><p>Any counter indication then for mixing B RFM and Girdraulic at the front? How different is the girder geometry from the girdraulic? In Know Thy Beast, I’ve found figures for the RFM but no</p><p>reference or drawing for girder vs girdraulic dimensions. In Richardson book, there are some figures for the Girder, but nothing on girdraulic. Somebody knows which the differences are (if there are) in terms of steering angle degrees and dimensions? There are any drawings with figures for B and C series cycle dimensions and geometry?</p><p></p><p>I've also understood that many still prefer the girder as lighter and it remains a bit lower than the girdraulic, right?</p><p>Any problem in mixing B and C cycle component?</p><p></p><p>Thanks!</p><p>Eddie</p></blockquote><p></p>
[QUOTE="Spqreddie, post: 46275, member: 1009"] Dear All, probably this has already been discussed in the past, therefore fell free to delete this post and address me to an older one, but I would like to ask you if you think there is any sensible difference in handling between the B and C Rfm, I', rebuilding my "B" Rapide with a C RFM and Girdraulic forks. For the bike to be period correct, I would need a "B" RFM. If I eventually find one, could I still use it with the girdraulic at the font? I understand the difference being only 1/2 inch in length (a part from the seat stays and brake cable abutment) so it should be imperceptible to the average rider, right? Being shorter might even help cornering, while only slightly worsening high speed stability. Any counter indication then for mixing B RFM and Girdraulic at the front? How different is the girder geometry from the girdraulic? In Know Thy Beast, I’ve found figures for the RFM but no reference or drawing for girder vs girdraulic dimensions. In Richardson book, there are some figures for the Girder, but nothing on girdraulic. Somebody knows which the differences are (if there are) in terms of steering angle degrees and dimensions? There are any drawings with figures for B and C series cycle dimensions and geometry? I've also understood that many still prefer the girder as lighter and it remains a bit lower than the girdraulic, right? Any problem in mixing B and C cycle component? Thanks! Eddie [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Girdraulic vs girder - "B" vs "C" RFM - Handing issues
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