spring rate and oil - Wrist Twisters
 
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post #1 of 9 Old 10-30-2007, 01:44 AM Thread Starter
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spring rate and oil

This has probably been done to death (i searched but no luck) does any one know the stock spring rate of the 2005 hornet 919, and what weigt oil.
I wish to change spring style from the standard and the rate as i find it dives to much under hard load (track work). I wish to go to a .90 kg But maybe thats whats in there (doubt it)

thanks for any help

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post #2 of 9 Old 10-30-2007, 05:16 AM
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Lots of useful information is available in the 919 Helpful Topics thread.

Under links select Mike's bikes. The 919 page and the Maintenance page will answer your questions.

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post #3 of 9 Old 10-30-2007, 09:25 PM Thread Starter
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more fork info on spring rate

sorry
i am from oz and a bit slow:001_smile:, i found oil and air gap info could you spoon feed me the oem spring rate for the 05.
thanks

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post #4 of 9 Old 10-31-2007, 12:23 AM Thread Starter
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all is well

found it,
great bunch of pages Mike thanks very much, i wiil now go harvest my money tree.
My financial controller is so happy .
dave

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post #5 of 9 Old 10-31-2007, 03:54 AM
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Dave I think one of your best bets may be to just make contact with Race Tech. They are truely the experts on this matter. You can give the your bike model, your weight, and your riding preference and they'll tell you what to do and you can get everything from them. They really are the experts!
http://www.race-tech.com/

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post #6 of 9 Old 10-31-2007, 08:13 PM Thread Starter
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thanks Cajun, i will definitley pump them for some info.
dave

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post #7 of 9 Old 06-18-2009, 07:11 AM
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Quote:
Originally Posted by MisterMike View Post
Lots of useful information is available in the 919 Helpful Topics thread.

Under links select Mike's bikes. The 919 page and the Maintenance page will answer your questions.
It appears the links are broken. I'm also looking for the stock spring rate.

2006 919 (Sold)
2011 Cb1000r

"oh no there ain't no rest for the wicked, until we close our eyes for good." - Cage The Elephant
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post #8 of 9 Old 06-18-2009, 08:06 AM
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There is no way of accuretely testing a progressively wound spring - It's just an average of it's resistance over a measured amount of compression (Kg. per mm). If the service manual or other source gives you the rate of the stock progressive wound spring you can't really use that figure to compare to a straight wound spring.

XRCajun is right, use Race Tech's "spring rate search" and follow the prompts.

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post #9 of 9 Old 06-18-2009, 04:54 PM Thread Starter
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wow this popped up again. Its been a year and a bit.
I put in a .9 spring from memory and fresh oil, at the same time braided front lines. And dropped the front 5mm
Re set the sag and away we went ,the bike feels a lot tighter. Tips in a bit quicker definitly does not dive as much and the brakes feel stronger when used harder and longer, IE at the track, on the road they feel the same (been an 05 the lines were still firm).
I gave up using the hornet at the track, it was just the wrong beast really, so for my 50th my pillion in a million bought me a cbr600 f4, i stiffened up the front, stuck an ohlins on the back and i have been having a ball.
Never had a full sport bike before, you are already in position for corners without having to climb all over the thing and it is so nimble.
Getting use to wringing its neck is a bit daunting as the hornst is so torquey and before that i had a vfr, But the 6oo screams.
thats about it for the time being, hopping to take it to phiilip island in november for 2 days, i went there to watch the gp last year and the track is awesome, so i gotta ride it.
dave

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