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Author Topic: Belt slack different for a C spec?  (Read 968 times)

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Offline lunkhead

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Re: Belt slack different for a C spec?
« Reply #15 on: January 04, 2021, 05:32:26 pm »
Didn't you install emulators in your forks? What fluid capacity did you use? I don't have the C-Spec SM handy so I don't know if they both use the same amount.
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C-SPƎC

Offline Sdaniels

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Re: Belt slack different for a C spec?
« Reply #16 on: January 05, 2021, 10:01:13 am »
Race Tech said to put fluid level at 140mm from the top of the fork to the surface of the fluid, no spring & fork tube all the way down.  They don't specify differences between the C spec & R spec.  R spec stock level is 116mm, or 4 1/2" compared to 5 1/2" for RT recommended level.  C spec forks are only 9mm longer so I seriously doubt fluid level difference would matter for extra length.
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2015 C-spec

Offline Sdaniels

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Re: Belt slack different for a C spec?
« Reply #17 on: January 05, 2021, 11:12:51 am »
I know this is getting away from the topic of the thread but decided to measure some things since the bike was on a stand.  My forks compress 40mm going from no load, front wheel off the ground, to bike weight only & upright.  They compress another 12mm with me on it.  I have progressive springs in it, .35/.90 kg.  I imagine they wouldn't compress as much if it was a straight .90 kg spring.  My front/rear weight bias is not the stock 60/40, but 52/48.  Race Tech said to put preload at 15mm but that is going with a straight-rate spring.  Might play around, throw in a longer spacer & get a bit more preload on the spring.
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2015 C-spec

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Offline lunkhead

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Re: Belt slack different for a C spec?
« Reply #18 on: January 05, 2021, 12:52:11 pm »
Racetech calls for a lower level than stock. As long as the forks don't bottom out over the biggest bumps, you can run as low as you want. You'll find that you have to run over a certain amount. OTOH, too much and you won't get full travel. My XV750 bottomed easily until I added a smidge more. You won't notice a little too much fluid but you will notice not enough. Racetech's recommended level sounds about right if it's not bottoming ;).
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Offline Sdaniels

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Re: Belt slack different for a C spec?
« Reply #19 on: January 05, 2021, 01:53:02 pm »
I'm pretty sure I'd know if they were bottoming without putting a zip tie around the fork & actually measuring...I'll do it anyway just to know though.  I can remember thinking in my earlier years with less preload I would have more travel & would work out to a better ride.  Those were some of the harshest rides...the only way the fork would come close to using full travel was hitting a square-edged shape you could feel in your teeth & sometimes resulted in a bent rim.  Yeah, I'll take that advice & leave well enough alone.
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2015 C-spec
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