Rebound damping???? - Wrist Twisters
 
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post #1 of 16 Old 05-11-2012, 02:49 PM Thread Starter
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Rebound damping????

I just bought an '07 919 and am needing a little clarification on the "rebound damping" adjustment. I followed the owners manual instructions for resetting the suspension to the default state. If I am understanding the term correctly, rebound damping is controlling the rate at which the spring/shock extends back to its normal position after being compressed???

If I turn the adj screw clockwise to the "H" setting, am I making it rebound faster or slower????

Also, I am noticing that the right fork adjustment screw does not stay in the position I put it in, it slowly creeps to the H setting during riding. I'd like to be able to still fine tune it from time to time. Any tips on making it stay where I set it other than locktite???

Thanks!

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post #2 of 16 Old 05-11-2012, 03:12 PM
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I was going to reply but I got lost in your profile picture................

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post #3 of 16 Old 05-11-2012, 03:18 PM
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Quote:
Originally Posted by radicalwillie View Post
I just bought an '07 919 and am needing a little clarification on the "rebound damping" adjustment. I followed the owners manual instructions for resetting the suspension to the default state. If I am understanding the term correctly, rebound damping is controlling the rate at which the spring/shock extends back to its normal position after being compressed???

If I turn the adj screw clockwise to the "H" setting, am I making it rebound faster or slower????

Also, I am noticing that the right fork adjustment screw does not stay in the position I put it in, it slowly creeps to the H setting during riding. I'd like to be able to still fine tune it from time to time. Any tips on making it stay where I set it other than locktite???

Thanks!
locktite = nono in this case. It's threaded from the inside, which I'm most certain gets splashed with oil. Why it is turning itself is beyond me. I will let a suspension guru (PING LDH!) talk to you about it.

if you love your motorcycle, set it free.. if it comes back and hits you.. you highsided
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post #4 of 16 Old 05-11-2012, 06:01 PM
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setting it to the "hard" side means the rebound will be SLOWER.... setting it to the soft side means rebound will be quicker.


Try it... put it all the way at one extreme, bounce it and take note... then go the other way (its like 2.5ish turns)

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post #5 of 16 Old 05-11-2012, 07:03 PM Thread Starter
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Quote:
Originally Posted by nd4spdbh View Post
setting it to the "hard" side means the rebound will be SLOWER.... setting it to the soft side means rebound will be quicker.


Try it... put it all the way at one extreme, bounce it and take note... then go the other way (its like 2.5ish turns)
Thanks! The guy I bought it from was a dirt biker and had it set all the way to soft. When I am in a corner and hit any kind of bumps in the road, the rear end bounces all over the place. I've got the preload where it feels right, I'll try adjusting the rebound to hard tomorrow.

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post #6 of 16 Old 05-11-2012, 08:24 PM
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Quote:
Originally Posted by radicalwillie View Post

1
I just bought an '07 919 and am needing a little clarification on the "rebound damping" adjustment. I followed the owners manual instructions for resetting the suspension to the default state. If I am understanding the term correctly, rebound damping is controlling the rate at which the spring/shock extends back to its normal position after being compressed???

2
I turn the adj screw clockwise to the "H" setting, am I making it rebound faster or slower????

3
Also, I am noticing that the right fork adjustment screw does not stay in the position I put it in, it slowly creeps to the H setting during riding. I'd like to be able to still fine tune it from time to time. Any tips on making it stay where I set it other than locktite???

Thanks!
1
Yes.

2
H = harder = more damping = slower

3
Some rebound rods bind inside the cartridge.
Sometimes one side is worse than the other.
So when you turn at the top, the entire rod does not turn the same amount, instead the rod twists, and ends up being a torsion spring.
Time and movement release the binding, which lets the rod relax, and this makes the top of rod seemingly magically turn a bit on its own in a counterclockwise direction.
You can over turn a bit, then back off a bit, if you are having this problem.
Undamaged rebound adjuster rods in 919s can exhibit this to some degree.
A bent rod really aggravates it.

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post #7 of 16 Old 05-12-2012, 05:28 AM Thread Starter
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Quote:
Originally Posted by mcromo44 View Post
1
Yes.

2
H = harder = more damping = slower

3
Some rebound rods bind inside the cartridge.
Sometimes one side is worse than the other.
So when you turn at the top, the entire rod does not turn the same amount, instead the rod twists, and ends up being a torsion spring.
Time and movement release the binding, which lets the rod relax, and this makes the top of rod seemingly magically turn a bit on its own in a counterclockwise direction.
You can over turn a bit, then back off a bit, if you are having this problem.
Undamaged rebound adjuster rods in 919s can exhibit this to some degree.
A bent rod really aggravates it.
Great info, thanks for the explanation!!

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post #8 of 16 Old 05-12-2012, 05:37 AM
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Quote:
Originally Posted by nd4spdbh View Post
Try it... put it all the way at one extreme, bounce it and take note... then go the other way (its like 2.5ish turns)
Have your girlfriend do the bouncing and take a video so we can see whats happening. Purely for research.

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post #9 of 16 Old 05-12-2012, 08:08 AM
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Quote:
Originally Posted by marylandmike View Post
Have your girlfriend do the bouncing and take a video so we can see whats happening. Purely for research.
OH SHIT.... i didnt realize the bike in the picture was a 919!!! i just saw that asss!!!!

is that your bike OP!

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post #10 of 16 Old 05-12-2012, 08:16 AM Thread Starter
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Quote:
Originally Posted by nd4spdbh View Post
OH SHIT.... i didnt realize the bike in the picture was a 919!!! i just saw that asss!!!!

is that your bike OP!
Yep, that's both of my rides

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post #11 of 16 Old 05-12-2012, 08:24 AM
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Now that is a killer photo

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post #12 of 16 Old 05-13-2012, 05:58 AM
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I am trying to convince my gf to do it now...

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post #13 of 16 Old 05-13-2012, 07:17 AM
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Quote:
Originally Posted by nd4spdbh

OH SHIT.... i didnt realize the bike in the picture was a 919!!! i just saw that asss!!!!

is that your bike OP!
I need a Zuma pic like that!

:buell:
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post #14 of 16 Old 05-13-2012, 07:35 AM
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I need a Zuma pic like that!
I dare you

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post #15 of 16 Old 05-13-2012, 12:48 PM
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I'm trying to get one as well! I vote best mod for the 919 right there...

We did have a tail tidy vote awhile ago...not sure any less can be chopped off that fender kit...

I may not have a lot to say but it doesn't mean I don't listen.
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post #16 of 16 Old 05-13-2012, 01:15 PM
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Quote:
Originally Posted by marylandmike

I dare you
This is going to take some serious planing and perfect timing or maybe just a few wine coolers from Bigdaa's fridge!

:buell:
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