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Author Topic: Shimming the R6’s rear shock?  (Read 866 times)

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bigshug1

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Shimming the R6’s rear shock?
« on: February 15, 2020, 12:55:14 PM »

Question for those of you who ride an R6 - because you’ll already know what a *slight* PITA it is to remove the rear shock for any reason...

It was suggested to me that I shim the rear (based on my current front fork setup) with a 6mm shim - based on riding at VIR, CMP and Road Atlanta. I’m good with that. Graves used to make a shim kit for Yamaha but they’ve stopped making it, now, and they’re only doing it for Kawasaki motorcycles - but Traxxion has a color coded shim stack that’ll allow you to look at what you have and easily tell what height you’ve got installed. I like that idea, too.

My question, though, is this - do any of you switch shim heights out when you go to a totally flat track like NCBike? Or do you keep it the same?

If it truly is something I need to swap out between the tracks we ride the most, my plan is to have a buddy machine the 6mm shim into a “U” shape so I can remove it without having to remove the whole shock. Then again, if it’s not a real issue either way...I’ll just keep the shim whole and roll with it.
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Shane Carwile
Intermediate Group
2015 Yamaha R6 - #247
2017 Yamaha R6 - (probably) my backup bike :)

RocketDan

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Re: Shimming the R6’s rear shock?
« Reply #1 on: February 15, 2020, 05:19:30 PM »

I’m not on an R6. But I increased my rear shock length on the R1 which is the same effect on the geometry. I run the same setup at all tracks.


Daniel Hughes
2015 R1
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bigshug1

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Re: Shimming the R6’s rear shock?
« Reply #2 on: February 15, 2020, 05:35:17 PM »

10-4 - just trying to see if other folks are seeing the need to switch shim sizes at tracks that aren’t necessarily similar.

One vote for “no changes” :D
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Shane Carwile
Intermediate Group
2015 Yamaha R6 - #247
2017 Yamaha R6 - (probably) my backup bike :)

NicNac337

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Re: Shimming the R6’s rear shock?
« Reply #3 on: February 16, 2020, 05:44:20 AM »

Make that 2.
My R6 rear shock setup stays the same no matter what track  :D
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Nicole #337
2011 YZF-R6
Charlotte, NC

MonkeyMan

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Re: Shimming the R6’s rear shock?
« Reply #4 on: February 16, 2020, 05:59:52 AM »

Hey Shane - for us mere mortals without a suspension tech (and tire tech, electronics tech, engine builder, suit/helmet/glove/boots manager) the shock height stays the same.

And I also installed a kit to lengthen the shock on my R1.
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"MonkeyMan" Mike
#413 Yamaha R1M
Flying Monkey Racing
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RocketDan

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Shimming the R6’s rear shock?
« Reply #5 on: February 16, 2020, 09:11:15 AM »

Hey Shane - for us mere mortals without a suspension tech (and tire tech, electronics tech, engine builder, suit/helmet/glove/boots manager) the shock height stays the same.

And I also installed a kit to lengthen the shock on my R1.

Why are you assuming Shane is a mortal like the rest of us? LOL


Daniel Hughes
2015 R1
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bigshug1

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Re: Shimming the R6’s rear shock?
« Reply #6 on: February 16, 2020, 10:23:23 AM »

Less than a mortal, here...lol

Even with a U shaped shim, its still a slight pain to get at the clevis - so if it wouldn’t make a difference for an old slow guy, I’ll leave it the same for sure.

Appreciate the info!
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Shane Carwile
Intermediate Group
2015 Yamaha R6 - #247
2017 Yamaha R6 - (probably) my backup bike :)

52 Ruhe

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Re: Shimming the R6’s rear shock?
« Reply #7 on: February 16, 2020, 06:36:02 PM »

R6 shock set up
is the easiest shock out there to remove. What are you talking about?
290 eye to eye leave it alone after that.


Sent from Spinak’s samsuck phone
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Mike Ruhe #52

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52 Ruhe

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Re: Shimming the R6’s rear shock?
« Reply #8 on: February 16, 2020, 06:37:08 PM »

R6 shock set up
is the easiest shock out there to remove. What are you talking about?
290 eye to eye leave it alone after that.


Sent from Spinak’s samsuck phone
Also if you are going to shim make sure you have enough Clevis length.
They sell a longer one depending on needs


Sent from Spinak’s samsuck phone
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Mike Ruhe #52

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Canton, GA

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bigshug1

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Re: Shimming the R6’s rear shock?
« Reply #9 on: February 16, 2020, 07:42:04 PM »

Mike - I should be good. The shim that comes with the bike is ~3mm, and I have enough room for twice that amount from what I can tell...

Who sells a longer-length clevis, out of curiosity? Graves seems to be moving towards catering to Kawasaki more so than Yamaha from the looks of things.
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Shane Carwile
Intermediate Group
2015 Yamaha R6 - #247
2017 Yamaha R6 - (probably) my backup bike :)
 

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