954 fork info/bottoming - Honda Motorcycles - FireBlades.org
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post #1 of 9 Old 04-15-2017, 5:09 PM Thread Starter
 
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954 fork info/bottoming

Hi all,

Was wondering if anyone knows where exactly on the chrome lower fork tubes that the 954 reaches the mechanical bottom? or even the oil lock section? Do they go right to the axle casting at the bottom like some forks, or stop 10mm or so short?

I've recently put some 9nm springs in, fresh oil etc and am trying to tune them using a zip tie. At the moment, under hard braking on uneven road i'm pushing the tie to about 10-15mm from the bottom maybe, but once or twice i've noticed the forks feeling a bit rough and ugly over bumps in that position - so was worried i might be hitting the oil lock/bottoming them sooner than i realised.

Thanks

Craig
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post #2 of 9 Old 04-16-2017, 4:02 AM
 
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Re: 954 fork info/bottoming

Should be 120mm from the top when uncompressed as far as I know.
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post #3 of 9 Old 04-16-2017, 9:11 AM
 
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Re: 954 fork info/bottoming

This is a modified 06-07 1000RR fork but they are very similar to 954 forks and i use these on my 954.
They bottom out mechically about in the same spot and have 120mm suspension travel like 954.

If they are going that far they are bottoming out. You can see from the pic where these mechically bottom out. The dark line...
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Last edited by mika_u; 04-16-2017 at 5:17 PM.
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post #4 of 9 Old 04-16-2017, 4:33 PM
 
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Re: 954 fork info/bottoming

Regardless of model, if you know the total travel then just work it out with the forks uncompressed and go from there.
That bottom mark does look quite far down though.
Out of interest, what modifications did you need to do to fit the newer forks?
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post #5 of 9 Old 04-16-2017, 5:11 PM
 
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Re: 954 fork info/bottoming

You can't normally get the full travel of the front wheel when the springs are on even when the bike is lifted up and you pull the front wheel down. On the 1000RR topout springs prevents that. That is why it is measured separetly and the one on my forks is really measured where they mechically bottom but they have ktech pistons and valves so stock forks can bottom out earlier. I can add 120mm from the black line and calculate how much the tube should show depending on what i wan't to set the sag. The suspension guy that did my forks said Hondas normally bottom out when 15-25mm before the fork leg bottom casting.

My front end has 929 lower triple, 954 upper, 06-07 1000RR forks, 954 front wheel and discs and Nissin radial monoblocks from a Triumph 675.
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post #6 of 9 Old 04-16-2017, 5:16 PM
 
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Re: 954 fork info/bottoming

So basicly to fit the 04-07 1000RR forks you need the forks and radial calipers from any 1000RR Fireblade (i would recommend +08). And discs can be used from 04-05 (310mm), 06-07 (320mm) or 00-03 (330mm). The calipers are just spaced with right size collars or bolted straight to the fork when using 310mm discs. Front axle and wheel spacers are same in all 3.
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post #7 of 9 Old 04-16-2017, 6:49 PM Thread Starter
 
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Re: 954 fork info/bottoming

Thanks for the information Mika

Anyone know of any reason why i can't see the attached images from Mika though?
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post #8 of 9 Old 04-16-2017, 7:15 PM
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Re: 954 fork info/bottoming

Quote:
Originally Posted by craig954 View Post
Thanks for the information Mika

Anyone know of any reason why i can't see the attached images from Mika though?
Yeah, the site is having a problem with attachments. Been a few days now.....

https://www.fireblades.org/forums/sit...tachments.html
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post #9 of 9 Old 04-18-2017, 3:36 AM
 
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Re: 954 fork info/bottoming

Quote:
Originally Posted by Root View Post
That bottom mark does look quite far down though.
They woud be 15mm upper on stock forks. Mine has the hydraulic stoppers removed when the K-tech piston and valve kit was installed.
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