Author Topic: Clip-Ons and front end stiffness?  (Read 2600 times)

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Offline Scott S

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Re: Clip-Ons and front end stiffness?
« Reply #25 on: August 02, 2016, 05:47:56 pm »
I can get a set of Progressive fork springs, model #11-1104, for a really good price. These are the springs that come with a spacer. Here are some specs from the Progressive site:

 Free length: 19.12"/486mm
 Spring rate: 35/50 lbs./in or .63/.89 kg/mm
 Spacer: 1.30 inches

 If these are the ones that are softer WITHOUT the spacer, I'm thinking about giving them a try and then contacting Progressive about springs for the rear shocks.
 Any input on springs for the shocks? The 1100F shocks are ~13.25" from eye to eye and the spring itself is only about 8" long on the softest setting.
 What's a good length and spring rate to keep that approximate ride height on a ~415 lb. bike with a 180 lb. rider?
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650

Online scottly

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Re: Clip-Ons and front end stiffness?
« Reply #26 on: August 02, 2016, 05:59:22 pm »
Here's a fork-spring rate chart someone posted here a while ago:
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Offline Scott S

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Re: Clip-Ons and front end stiffness?
« Reply #27 on: August 02, 2016, 06:30:01 pm »
 Looks like the fork springs might be just about right.
 Do you get the shock springs rates the same way?
'71 CB500 K0
'17 Triumph Street Scrambler
'81 Yamaha XS650