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Jprovo
Posted on Monday, July 04, 2005 - 12:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Here are some Pics of my front tire, after I crashed last Sunday on Angeles Crest.





Tire Details: Avon AM51, 28 psi, I think that this tire has been on the bike for about 10,000 miles, but I can't remember. I'm no tire expert, but it looks like I cooked my tire, maybe too many heat cycles? It's not uncommon for the edges of my front tire to be blue and feathered afater a hard days riding, but the stuff at the edge of the tire is gummy and flaky? Any opinions?

Crash Details: I lowsided going into a left hand turn, the front end washed ot from underneath the bike. As far as I can remember, I was begining to turn in, and I decided to scrub off some speed. I had a light two fingers on the front brake, and I heard the front tire chirp, then I was on the ground sliding. I am fine, only suffered some sorenes and a bruised elbow, That is 90% healed. I needed all new gear, and The bike needed bars, headlight, a shifter, a peg, turn signal, and a few other parts.

The Blast is runing again, and I'm already riding again.

As you know I'm a big fan of Avons, becaue I can get great milage out of them, but I might end up running a Avon Rear with a Pirreli front.

James
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Ezblast
Posted on Tuesday, July 05, 2005 - 11:46 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Looks ok to me.
GT - JBOTDS! EZ
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Gearheaderiko
Posted on Tuesday, July 05, 2005 - 12:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Glad you're okay James. I've never seen a tire do that except when old. Plenty of tread left though, I think going to the Pirelli is a good choice.
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Mmelvis
Posted on Tuesday, July 05, 2005 - 02:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Jprovo the Pirreli's get like that on the edges with hard riding ( 1 track day, still good for street riding though ). The gummy flaky part you were referring to. I am not sure about heat cycles on the Avon tires. Try emailing them and see what they have to say.
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Naustin
Posted on Tuesday, July 05, 2005 - 04:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm not as experiences as Mmelvis, Gear, or Ez, but it looks like the marks on the tire came from after the crash, not before.

Maybe there was some debris on the corner that you didn't see?
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Swampy
Posted on Tuesday, July 05, 2005 - 06:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Did you look at the pavement in the corner, maybe there was some crack sealer or somthing in the corner that the tire picked up, if there was then you could call 1-800-call-sam, the lawyer,LOL.
I would look foor something in the corner. Did the tire feel bad before the crash? As a tire enters into a heat cycle it wouldn't just go all at once, it would begin to exibit some noticable handling changes before hand.
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Blake
Posted on Tuesday, July 05, 2005 - 07:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Suggest that you take it to the track. You are pushing it too hard for street riding. The tire looks fine to me. That type of wear at the edge of a tire is normal. It is caused by abrasion.
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Jprovo
Posted on Tuesday, July 05, 2005 - 08:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Blake,

I agree, I was riding outside the limits of what was safe and prudent, otherwise I wouldn't have crashed. I plan on taking a bike to the track as soon as I can afford a second one, I can not be without a streetbike.

The sad thing is, I was riding with the same group of guys that I normally ride with, at what I felt was a safe pace, on a road that I have been down a dozen times. I was riding at what I would consider 80% of what I thought the bike and I were capable of at that point and time. I probably braked harder than I thought I did, or picked up some ghost gravel than non of my other riding buddies could see. (meaning I probably "scrubbed off speed" a lot harder than I intended too.)

The tire wear is probably normal too, I just needed nore than one person to tell me that it was. I normally get that kind of blueing around the edges, and the rubber usually balls up or roughs up the edge. I was a little concerned about the slide mark clearly shown in the third picture, but that was probably caused when I threw the bike down the road!!! I have ridden on the Avons for many miles, and would hate to think that all this time I was disillusioned about it's performance abilities.

Thanks for everyone's observations.

James
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Matty
Posted on Wednesday, July 06, 2005 - 01:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That's a really old tire to be trail braking with James!
Retire (hah!) that thing if you're going to be doing anything other than freeway commuting.

Some may argue this point, but the blueing is caused from overheating the tire -typically from pushing it too hard before it's up to running temp, or from improper air pressure (too low).
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Gearheaderiko
Posted on Wednesday, July 06, 2005 - 07:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

James, please see my post under "racing the Blast".
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Buellboy492
Posted on Wednesday, July 06, 2005 - 11:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Glad to hear you are ok after the incident! I just read your profile, Jprovo, my hat is off to you! You are one serious Blastaholic! And from what I read, you got your money's worth on the extended warranty, plus you must have one of the good dealers. Keep it up. I must look into the Avon tyres- and I thought I was doing well getting almost 5,000 miles out of the stock Dunlops.
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Jprovo
Posted on Thursday, July 07, 2005 - 01:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Buellboy,
Thanks, I love the Blast. You should be able to get around 6,000 out of a Avon rear tire. Of coure, the Avons cost a lot less than the Dunlops (at least at my local shop)
James
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