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26-06-05, 05:31 PM | #1 |
The Sick Man
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Front springs spacers & oil
I have looked arround and seen that most people are recomending a front spring spacer of about 15mm.
Is this assuming that all aftermarket springs are the same length? If so i guess that it is the same for all. What about if your bike has preloader caps, how does that change the spacer length? Ive got a set of progressive springs from (progressive), they are installed at the moment with a spacer of 3cm and the pre-load caps to highest setting (7 bars), it feals firm but a bit to much so. Sould the spacer be less? In the box came a little peice of paper with diffrent bikes and spacer lengths, but for the sv650 is does not say what it should be, without a spacer the spring would be free to bounce in the fork. I did a reasonable brake test and the front seems to compress to about 30mm from top, is this ment to be less. Should the spacer be less? Any ideas?
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26-06-05, 05:52 PM | #2 |
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Progressive springs are definitely longer than single rate springs and therefore the 12-15mm spacer will be incorrect. This was noticed at the ForkFest last year but I can't remember who had progressives though I think it was either Mr Toad or Billy C.
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26-06-05, 06:02 PM | #3 |
The Sick Man
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I originaly tried to put the whole of the spacer that they gave into the fork, but was impossable to put the cap on, the i trimmed about 1.5cm off and the was able to get the cap on with a little help. Glad i did not put the whole thing in otherwise it would be rock hard.
Mabey a trim of 1cm of the spacer should help a bit more, 1cm off should not be a big problem as i do have preload caps which can compensate enough, considering that at the moment is as hard as i will ever have it.
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26-06-05, 06:04 PM | #4 | |
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Quote:
Dan |
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26-06-05, 06:24 PM | #5 |
The Sick Man
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Took the front forks off completley as i wanted to turn them upside down for all the oil to come out. I also had to twist one of the forks arround because it was bent (as per SidSquid's recomendation for temporary fix).
With the full length spacers they gave i could not get the caps on at all, i noticed that i had a bruse on my hand where i tried to get the cap on, that why i think (i know that they have to be shortened).
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26-06-05, 06:31 PM | #6 | |
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26-06-05, 06:44 PM | #7 |
The Sick Man
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It seems like one is (the left one), the bend is now facing inwards to the other fork, now the wheel goes on properly. When i have some free time i will sort it out properly and get the forks to be both checked properly.
Sid Squid any ideas on the spacer, should it be enough to put a little pressure on the spring when the cap is on, then use the preload adjusters?
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27-06-05, 08:35 AM | #8 | ||
The Sick Man
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Found this regarding spacer length. (TT from SVRider.com)
http://www.svrider.com/tips/emulators.htm Quote:
Quote:
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OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions |
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27-06-05, 06:32 PM | #9 |
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If you're using PVC pipe for your preload spacers your air volume is reduced, so that could account for some of it... Alternatively, it could be for the wrong model
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27-06-05, 09:29 PM | #10 |
The Sick Man
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I took my spacers out and trimed them down to 30mm from 45mm.
Will ride out tommorow but now atleast i know that when i had 45mm spacer with no added preload from caps and it was too hard, now with 30mm of spacer, if i need i have the range of about 2cm from the caps. Also it seems that my sag is probaby off, by my calculations, this is after the spacer was adjusted. Fully Extended = 128mm Sag with rider = 90mm Sag without rider = 100mm Static Sag = 28mm (a bit off, adjust with added preload) Loaded Sag = 38mm (within limits, probably not enough) Loaded Sag to aim for = 128x0.3(third of total extention) = 38.4mm Fully loaded under braking before reduced spacer = 35mm Fully loaded under braking after reduced spacer (expected) = 20mm I took some of this info from a page about speed triples. Correct me if i am wrong on this
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OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions |
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