suspension settings - Wrist Twisters
 
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post #1 of 35 Old 12-03-2008, 06:39 PM Thread Starter
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suspension settings

ok i have a 07 919 and i need to adjust the front suspension to make it stiffer.. i get entirely to much dive in the front on hard braking... i weigh 230 pounds .... my question is for anyone with the adjustible front end .. how far should the big adjuster be turned in and how many for the smaller one.. i realize not every setting fits everyone.. so i really wanna know what each adjustment does and where is a good starting point.. cause the dive is getting old.... quick...



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post #2 of 35 Old 12-03-2008, 06:44 PM
 
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**Ping XRMikey**



EDIT: Just thought about it; I'm not sayin' he's overweight. He's got the 919 suspension down.

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post #3 of 35 Old 12-03-2008, 07:00 PM
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Gday mate. I found this guide which worked good for me on my 07 919.. (CB900 down under)....
http://www.sportrider.com/tech/146_0402_susp/index.html

I come from the land Down Under, Where the women blow and the men thunder!!
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post #4 of 35 Old 12-03-2008, 07:09 PM Thread Starter
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post #5 of 35 Old 12-03-2008, 07:40 PM
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I hate to tell you this, but your issue is not with the front suspensions's rebound damping adjustment or the preload, but rather that the springs are too light for your weight. No amount of screw turning is gonna fix that--you need to replace the fork springs with heavier (stiffer) versions. Check out Racetech, Lindemann Engineering, etc. for that. My guess is that for your weight you should be up around 1.0 kg springs. Over-adjusting the damping settings is only going to make your suspension action harsher, not firmer. Additionally, don't assume your weight is excessive, but rather that the Niner is undersprung in the front end. Unless you look like a Victoria's Secret model, the Niner is pretty much undersprung for everyone in the front, oversprung in the rear.

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post #6 of 35 Old 12-03-2008, 07:46 PM Thread Starter
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Quote:
Originally Posted by Norton919 View Post
I Unless you look like a Victoria's Secret model, the Niner is pretty much undersprung for everyone in the front, oversprung in the rear.
i could pass for a calvin klein underwear model....









in a really dark room...



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post #7 of 35 Old 12-03-2008, 07:48 PM
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Quote:
Originally Posted by Norton919 View Post
I hate to tell you this, but your issue is not with the front suspensions's rebound damping adjustment or the preload, but rather that the springs are too light for your weight. No amount of screw turning is gonna fix that--you need to replace the fork springs with heavier (stiffer) versions. Check out Racetech, Lindemann Engineering, etc. for that. My guess is that for your weight you should be up around 1.0 kg springs. Over-adjusting the damping settings is only going to make your suspension action harsher, not firmer. Additionally, don't assume your weight is excessive, but rather that the Niner is undersprung in the front end. Unless you look like a Victoria's Secret model, the Niner is pretty much undersprung for everyone in the front, oversprung in the rear.
I'm with this guy. Most bikes are "suspended" for people around 170 pounds and not for real aggressive riding. The first time I took my ZRX1200 to a trackday I found out what it is like to bottom out the front end hard enough to create a front end slide (leathers are easy to clean....). A set of springs (from Lindemann) cured this completely.

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post #8 of 35 Old 12-03-2008, 07:57 PM Thread Starter
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Quote:
Originally Posted by sike View Post
I'm with this guy. Most bikes are "suspended" for people around 170 pounds and not for real aggressive riding. The first time I took my ZRX1200 to a trackday I found out what it is like to bottom out the front end hard enough to create a front end slide (leathers are easy to clean....). A set of springs (from Lindemann) cured this completely.
right... now what can i expect to pay for a set of springs..which brand is the best of those?? and what type of fluid goes back in.. and do i get the 1kg springs or do i need heavier? i only like to buy stuff once...

weight 231 (as of 3 minutes ago) and a VERY aggressive rider



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post #9 of 35 Old 12-03-2008, 08:06 PM
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Quote:
Originally Posted by barton664 View Post
right... now what can i expect to pay for a set of springs..which brand is the best of those?? and what type of fluid goes back in.. and do i get the 1kg springs or do i need heavier? i only like to buy stuff once...

weight 231 (as of 3 minutes ago) and a VERY aggressive rider
Lindeman (http://www.le-suspension.com/) has done 4 bikes for me. Each time I just either send them the stuff (if a rear shock) or call them (like in this case). They will ask you your weight, riding style, etc.... and send you the right stuff. They will probably also be able to tell you the best fluid in this case, too. Everything they have sold me or rebuild for me has turned out perfect. They even rebuilt my wife's rear shock for her 599 to match her 115 lbs and mild riding style (and now I can't hardly ride it anymore given I weigh quite a bit more and am a bit on the aggressive side).

Good luck, Steve

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post #10 of 35 Old 12-03-2008, 08:09 PM
 
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Call RaceTech for spring rates. Ohlins are a little pricier.

The stock springs are progressive rate. They recommended .9 Kg for me.
The rear is oversprung on 02 and 03 models, and undersprung on 04 and newer.

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post #11 of 35 Old 12-03-2008, 08:14 PM
 
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Quote:
Originally Posted by barton664 View Post
... and a VERY aggressive rider
Like your neighbor that lives 2 miles away.

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post #12 of 35 Old 12-03-2008, 08:18 PM
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Quote:
Originally Posted by barton664 View Post
right... now what can i expect to pay for a set of springs..which brand is the best of those?? and what type of fluid goes back in.. and do i get the 1kg springs or do i need heavier? i only like to buy stuff once...

weight 231 (as of 3 minutes ago) and a VERY aggressive rider
I forgot to mention, you are probably looking at about $120. But it is WAY worth it.

If you are going to have it apart, you should really think about some gold valves (http://www.race-tech.com/shopping/sh...howPage=street) they make a huge improvement, too.

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post #13 of 35 Old 12-03-2008, 08:32 PM Thread Starter
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Quote:
Originally Posted by Sokali View Post
Like your neighbor that lives 2 miles away.
many things i am... stupid squid aint one of them


on a side note if you want next time i see him go past at 200+ mph i can get his number for you so he can give you some riding tips...



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post #14 of 35 Old 12-03-2008, 08:52 PM
 
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I just need help with bouncing off the bike like he did.

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post #15 of 35 Old 12-04-2008, 08:39 AM Thread Starter
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Quote:
Originally Posted by Sokali View Post
I just need help with bouncing off the bike like he did.
he has that little oompa loompa thing going and we know how bouncy they are...lol



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post #16 of 35 Old 12-04-2008, 12:11 PM
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Man I love you guys! lol Suspention is where it's at. You guys are so on the money. Murph, are you soaking this up?

Sike was your Wife's 599 resprung?

Has anyone ever resprung an 04 919 shock?

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post #17 of 35 Old 12-04-2008, 12:13 PM
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Quote:
Originally Posted by Sniper View Post
Man I love you guys! lol Suspention is where it's at. You guys are so on the money. Murph, are you soaking this up?

Sike was your Wife's 599 resprung?

Has anyone ever resprung an 04 919 shock?
Yes, the folks at Lindeman measured it and resprung it with perfect results.

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post #18 of 35 Old 12-04-2008, 02:31 PM
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Quote:
Originally Posted by Sniper View Post
Man I love you guys! lol Suspention is where it's at. You guys are so on the money. Murph, are you soaking this up?

Sike was your Wife's 599 resprung?

Has anyone ever resprung an 04 919 shock?
Yeah I'm listening...but I forgot to water my money tree and it wilted. Maybe it will come back next year.

I'll be dropping some major cash this winter on different projects, new tires for the bike, vehicle repairs, etc. We'll see how the spring comparison project goes.

I thought about looking for a new rear shock. Maybe, if I'm a good boy, I'll convince my wife to let me get an ohlins or progressive shock for my birthday.

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post #19 of 35 Old 12-04-2008, 02:43 PM Thread Starter
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Originally Posted by cmurphy84 View Post
Yeah I'm listening...but I forgot to water my money tree and it wilted. Maybe it will come back next year.

I'll be dropping some major cash this winter on different projects, new tires for the bike, vehicle repairs, etc. We'll see how the spring comparison project goes.

I thought about looking for a new rear shock. Maybe, if I'm a good boy, I'll convince my wife to let me get an ohlins or progressive shock for my birthday.
your gonna need some chap-stick with all the butt your gonna haveta kiss to get a ohlins...

good luck!!



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post #20 of 35 Old 12-04-2008, 02:55 PM
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race tech 1.0 shipped for about $100 worked for me. I weigh about the same.

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post #21 of 35 Old 12-04-2008, 02:59 PM
 
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I have a 04 shock on my 03. How do you know the 04 is under-sprung? The 03 shock would kick me out of the seat over any size bump! When I installed The 04 it is a lot better. I have it on the 2nd setting and it feels good. I weigh 190lbs w/o gear.

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post #22 of 35 Old 12-04-2008, 03:15 PM
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I can't afford it, but here is an Ohlins on eBay with 5 days left, no bids, and starts at $499.

http://cgi.ebay.com/ebaymotors/ws/eB...EF:MOTORS:1123

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post #23 of 35 Old 12-04-2008, 03:21 PM
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Quote:
Originally Posted by cmurphy84 View Post
I can't afford it, but here is an Ohlins on eBay with 5 days left, no bids, and starts at $499.

http://cgi.ebay.com/ebaymotors/ws/eB...EF:MOTORS:1123
This is a re-listed item. The seller could not supply me with any of the specifications including the spring rate. He suggested I contact Ohlins- LAME!!!

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post #24 of 35 Old 12-04-2008, 05:33 PM
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I noticed it doesn't look like it has a remote reservoir or remote preload adjustment on it either.

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post #25 of 35 Old 12-04-2008, 05:59 PM
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Can I get a quick class on rear settings. And yes I've seen the sag link.

If I want the rear to beating me up on crappy SC backroads(too tight), should I back the spring down a notch, or adjust the screw to soften rebound? And a new shock is not even close to an option for me at the present.

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post #26 of 35 Old 12-04-2008, 06:15 PM Thread Starter
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Quote:
Originally Posted by Heath View Post
Can I get a quick class on rear settings. And yes I've seen the sag link.

If I want the rear to beating me up on crappy SC backroads(too tight), should I back the spring down a notch, or adjust the screw to soften rebound? And a new shock is not even close to an option for me at the present.
what screw?? all the adjustment i have found for the rear is the "where's the damn spanner wrench" adjustment



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post #27 of 35 Old 12-04-2008, 06:21 PM
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My bad, I thought there was a screw on the bottom of the shock.

Shows how much attention I've paid to it.

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post #28 of 35 Old 12-04-2008, 06:25 PM
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The owners manual says its got a rebound damping screw on the bottom.

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post #29 of 35 Old 12-04-2008, 09:14 PM
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Yes it does, there is a screw boys.

'02 Honda 919 - She's the only one for me!

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post #30 of 35 Old 12-04-2008, 09:36 PM Thread Starter
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Quote:
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Yes it does, there is a screw boys.
on a 07?? i did not see it... not saying it aint there... just saying i didnt see it... anyone have a picture of this screw??



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post #31 of 35 Old 12-05-2008, 07:56 AM
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The air traped at the top of the fork tube can be treated as a progressive spring. By changing the volume of traped air you can change the front end dive. Less volume equals a faster rising spring rate as the air compresses. Measure the fork travel full compression to full extension (zip tie around tube). Fill the forks with oil until this measurement is achieved from where the bottom of the fork cap should be to the top of the oil. Playing with this volume is inexpensive and will change the way the bike rides.

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post #32 of 35 Old 12-05-2008, 09:45 AM
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There's a screw on my '04......right side of the bike near the bottom of the shock, flat lookin' black headed. Not sure about the '07......





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post #33 of 35 Old 12-05-2008, 03:48 PM
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Quote:
Originally Posted by barton664 View Post
on a 07?? i did not see it... not saying it aint there... just saying i didnt see it... anyone have a picture of this screw??
Here it is on my 07


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post #34 of 35 Old 12-05-2008, 04:57 PM Thread Starter
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Quote:
Originally Posted by marylandmike View Post
Here it is on my 07
ok... i got that... now which way does what??



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post #35 of 35 Old 12-05-2008, 05:29 PM
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I'm gonna go out on a limb here. But I think turning it towards soft will make the rear end act like less of a pogo stick over bumbs, but too far and you get the wet sponge effect.

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