08 R6 180-190 Adjustment - Yamaha R6 Forum: YZF-R6 Forums
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post #1 of 20 (permalink) Old 02-16-2019, 06:50 PM Thread Starter
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08 R6 180-190 Adjustment

For the racing types on here.

I am trying out a 190/55 on my 08 with stock suspension for the track.

It is about 2.5mm taller than my 180/55. To keep everything else the same do I just remove the shim at the top of the shock?

TIA
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post #2 of 20 (permalink) Old 02-17-2019, 06:48 AM
Just lean harder...
 
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Re: 08 R6 180-190 Adjustment

I would leave the spacer on the rear and raise the front 2.5mm.
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post #3 of 20 (permalink) Old 02-17-2019, 07:40 AM
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Re: 08 R6 180-190 Adjustment

A friend of mine riding 08, we just replaced the tires with 190, nothing removed or changed.
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post #4 of 20 (permalink) Old 02-17-2019, 07:41 AM
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Re: 08 R6 180-190 Adjustment

Quote:
Originally Posted by Phrozen View Post
I would leave the spacer on the rear and raise the front 2.5mm.
if the front isnt already raised... I would be suspect.
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post #5 of 20 (permalink) Old 02-17-2019, 10:03 PM Thread Starter
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Re: 08 R6 180-190 Adjustment

I bought it pretty stock. Currently I have 7-8mm from the top of triple clamp to the top of the fork cap. I'm just thinking about balance. I think I may be able to handle alittle more weight on the front wheel either through the front or adding ride height to the rear (which I understand the tire might do for me). Just looking at things to work on next time out.

As for bringing the front up 2.5mm is that to maintain ground clearance when leaned over on the larger tire? I do find already that I often hit the toe slider on some corners despite moving the foot rearward onto the peg. Obviously that is not my aim.

I would prefer not to scrape them and just be faster
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BUT that is a work in progress.

I understand a few aspects of suspension setup, but not as sure about ride height and front to rear balance from a track riding POV.

Any learned advice would be appreciated.

Last edited by R6trackrider; 02-17-2019 at 10:07 PM.
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post #6 of 20 (permalink) Old 02-18-2019, 03:13 PM
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Re: 08 R6 180-190 Adjustment

If you have stock, unmodified forks... the tops of the caps should be flush with the triple clamp. Im not talking about the preload caps but the part it screws into.
If you search the suspension thread there are actual #s, in mm, to start with for a baseline.

Anyone Ive seen with fork legs up above the triples has usually crashed because they over loaded the front.

If you are over 160lbs you're going to need to up the spring rate some.
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post #7 of 20 (permalink) Old 02-18-2019, 07:26 PM Thread Starter
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Re: 08 R6 180-190 Adjustment

Thanks mate. I have now found some threads on it. I'm about 152lbs. I thought I read on here that was the bikes before the 08 as the 08 ended up with a longer spring?

Edit: Racetek has me on the right front spring for my weight but too soft with the stock spring on the rear.

Last edited by R6trackrider; 02-19-2019 at 03:03 AM.
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post #8 of 20 (permalink) Old 02-19-2019, 03:06 AM Thread Starter
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Re: 08 R6 180-190 Adjustment

Quote:
Originally Posted by TurboBlew View Post
If you have stock, unmodified forks... the tops of the caps should be flush with the triple clamp. Im not talking about the preload caps but the part it screws into.
If you search the suspension thread there are actual #s, in mm, to start with for a baseline.

Anyone Ive seen with fork legs up above the triples has usually crashed because they over loaded the front.

If you are over 160lbs you're going to need to up the spring rate some.
On second thoughts, you seem incorrect. All the threads I have read indicate I should have 10mm showing on my 08 R6.

Phrozen's suggestion seems to be a good one to I'm guessing maintain ride height and balance front to rear.
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post #9 of 20 (permalink) Old 02-19-2019, 03:06 PM
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Re: 08 R6 180-190 Adjustment

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Originally Posted by R6trackrider View Post
On second thoughts, you seem incorrect. All the threads I have read indicate I should have 10mm showing on my 08 R6.

Phrozen's suggestion seems to be a good one to I'm guessing maintain ride height and balance front to rear.

Yes go ahead and believe them. The forks should be flush... if you have 10mm above the triple you will undoubtedly crash in a short time...guaranteed. Unless Phrozens real name is Mike Fitzgerald...

Again reread my post and then reference the #s posted in the suspension thread. You seem to think that balance is a thing and you are wrong. Its real simple with a tape measure to know if you have the correct amount of ride height or not.

I have also posted the dimensions of a stock unmodified fork leg from an 07, 08 and one with a 25 & 30mm cartridge kit installed. The modified ones were dramtically longer hence why you put the forks down through the triples to raise the ride height in the front.
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post #10 of 20 (permalink) Old 02-19-2019, 09:55 PM Thread Starter
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Re: 08 R6 180-190 Adjustment

Hey mate. You read alittle tense about the discussion. I don't mean to offend you. I just cannot find what you are talking about. Feel free to show me. I'm open to learning about it, hence why I asked.

I have been on this bike for a bout 10 track days separated by a long rebuild resulting from being crashed into. No handling related crashes yet, but I'm only running in the fast group locally which is still below the racer group. I suspect the problems you may be alluding to will not present themselves to me until I can actually load the suspension more. I would like to understand why I make changes and do intend to get more professional guidance moving forward when I have the time as suspension guidance is not at our local track I need to go further afield.
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