May 17th, 2019, 02:50 PM | #1 |
CCS Amateur #501
Name: Dave
Location: Iowa
Join Date: Jun 2015 Motorcycle(s): '09 250 SE 'Booger' Posts: 406
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shock ratio?
Has anyone measured or calculated the ratio of rear wheel movement to shock movement? I came up with ~2.9 without any real measurements of the swingarm or linkage.
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June 1st, 2019, 03:15 PM | #2 |
CCS Amateur #501
Name: Dave
Location: Iowa
Join Date: Jun 2015 Motorcycle(s): '09 250 SE 'Booger' Posts: 406
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So in case anyone is wondering, I measured the shock ratio at 2.1:1. This is over the 3" of travel from the most extended position. The ratio seemed pretty linear over this range as best I could tell.
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June 2nd, 2019, 09:06 AM | #3 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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How did you measure? Seems ratio changes with angle of knuckle.
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June 2nd, 2019, 10:21 AM | #4 |
CCS Amateur #501
Name: Dave
Location: Iowa
Join Date: Jun 2015 Motorcycle(s): '09 250 SE 'Booger' Posts: 406
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Measured wheel movement from ground and shock length at a few points, using a MM ruler. I didnt have enough room to use my dial calipers for the shock length.
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June 2nd, 2019, 10:59 AM | #5 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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Interesting. I suppose with enough data points, we can plot a graph.
Ratio would actually be rate-of-change of position, so we would need to integrate twice. |
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