Suspension/ Tire wear help needed - Triumph675.Net Forums
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post #1 of 35 Old 09-06-18, 10:55 Thread Starter
ShaLaMae
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Suspension/ Tire wear help needed

I’m struggling I need help.
I have a 13 Daytona R.
I have a TRS Dog
I removed the shock spacer an added a 3mm washer for ride height.
Dropped the forks 3mm before flush
Fresh fork oil and fresh rear stock TTX
I was using SC 2 rear both 180/55 and a 180/60 switched to Michelin pro Evo 180/55
Both tires same issues side wall where I’m rolling on out of the corner I’m tearing it.
I’ve gone all ove the map with pressure.
Both tires I’m best with wear on the high side of PSI
I’m a fast track day rider very experienced.
I’ve tried being as smooth as possible with roll on “ it helps but not much”.
Is it the shock or am I not set up correctly
I just want a clean tire or as close as I can get. Don’t want to change the shock but I’m gonna have to if this keeps up.
So far I’m not a fan of TTX but if it’s me being out of range I’ll try to fix my numbers.

I hope this makes sense to someone I’m typing on my phone quick on coffee break
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post #2 of 35 Old 09-06-18, 11:15
MGFChapin
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Garage
Need pics.
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post #3 of 35 Old 09-06-18, 14:34
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Quote:
Originally Posted by ShaLaMae View Post

I removed the shock spacer an added a 3mm washer for ride height.
Dropped the forks 3mm before flush
Yes, some pics would help. Purely basing on what you posted about the forks and shock spacer, it sounds like the tire is tearing because of too much weight on the rear. By lowering the forks down to 3mm above flush and changing out to a smaller shock spacer, you have essentially lifted the front of the bike with more weight going to the rear.

However, pics would definitely help to diagnose.
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post #4 of 35 Old 09-06-18, 18:51 Thread Starter
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This is at 24 PSI. I was told by the track tire guy that I trust that low PSI is 18 and that's really low and the high side is 26PSI .
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post #5 of 35 Old 09-06-18, 19:08 Thread Starter
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this is after I pumped up the PSI over 26. But by this time my tire was all done. I spent this tire after ond day of 15 minute sessions every hr from 9-4 . The spot above the line on the right side is where the shredding is happening. The last picture is showing the throttle wear
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Last edited by ShaLaMae; 09-06-18 at 19:24.
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post #6 of 35 Old 09-06-18, 19:09 Thread Starter
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Anothe one
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post #7 of 35 Old 09-06-18, 19:11 Thread Starter
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post #8 of 35 Old 09-07-18, 06:54 Thread Starter
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That’s the tire pressure guide on the left
That’s my base line suspension settings I got from a fellow member from a track day last year.

I set up everything myself prior to his guidelines and was within a couple clicks on all settings.

I run everything softer and thought maybe that’s my issue. So 3 weekends ago 2 track days I went with his base. Between different tires and settings things went to crap. Not that they were great prior but I wasn’t hot tearing as much.

I’m playing with the rebound all the time.
Just to be sure I start from completely out “ clockwise “ and add positive “+” clicks. Then I removed clicks “clockwise - “
I have gone to about 9 clicks before I run out on the negative side “clockwise “
So to be clear counterclockwise is all in positive.
Is this correct?
I’m 90% sure I’m correct but I am dyslexic so I have that going for me 🤞.
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post #9 of 35 Old 09-07-18, 06:57 Thread Starter
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I’m running a 180 so that’s not an issue. I could run a 190 but prefer a quicker turn but might try a 190 next time and see if more sidewall will help with the on throttle exit.
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post #10 of 35 Old 09-07-18, 10:26
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Thanks for all the info. It definitely helps in trying to figure out what's going on. Based on the pics of the tires, the rear rebound is definitely too slow (meaning the rear stays squatting longer than it should). While looking at the shock adjusters, turning it clockwise until it stops means going "all the way in". Turning it counter-clockwise until it stops is "all the way out". I usually adjust from the "all the way in" position and count how many clicks out.

I would first try to reduce the rebound damping in the rear by turning the shock rebound adjuster at least 2 click out (counter-clockwise) from where you are at right now and test it. If you are still getting hot tears with rebound almost completely out, the issue is most likely geometry.

If not a rebound issue or geometry issue, than your tire gauge is completely off and you have been running too low psi this whole time!

I forgot to mention:
Like everyone else has already said, I don't run SC2s lower than 27 psi hot off warmers. Even at 27 psi hot, for my pace and track, I will start to overheat it after a few laps during the hotter months. I usually for about 28 psi hot for most days.
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