trail happenings nklr

DSN_KLR650
Post Reply
Jim Cunningham
Posts: 67
Joined: Wed Jul 05, 2000 2:02 pm

yikes

Post by Jim Cunningham » Mon Aug 07, 2000 10:07 am

I had a most peculiar and frightening experience this weekend that I would like anyone to comment on that may have had this experience, or heard of it. I was returning from a backcountry trip on the freeway; speeds were about 75mph. After about 25-30 miles I felt the bike suddenly lurch and heard this sound that I thought sounded like the engine losing spark for a few seconds. The bike continued seemingly normal. After about another 40 miles the bike lurched really hard and again I heard that sound. I was in heavy traffic and it was not safe to stop and again the bike continued seemingly normal. When I got to my exit and started to slow down I noticed a pronounced bump in the back wheel as if there was a big lump in the tire. When I finally came to a stop and got off the bike I could hardly believe my eyes and a cold chill ran through me! About a foot to foot and a half of the tread on the rear tire was gone! Yes I mean gone; all that was left was the smooth black rubber with cord showing through in places. The tread had peeled off like a skin. I knew then that the sound I heard was the tread coming off and hitting the frame. The tire was a 2 year old IRC GP-1 that had lots of tread on it. Does anyone know how/why this happened. Jim Cunningham A2

Ralph E. Hanson
Posts: 159
Joined: Sun Apr 09, 2000 8:15 am

yikes

Post by Ralph E. Hanson » Mon Aug 07, 2000 3:52 pm

Jim writes:
> When I got to my exit and started to slow down I noticed >a pronounced bump in the back wheel as if there was a big lump in the tire. >When I finally came to a stop and got off the bike I could hardly believe my >eyes and a cold chill ran through me! About a foot to foot and a half of >the tread on the rear tire was gone! Yes I mean gone; all that was left was >the smooth black rubber with cord showing through in places. The tread had >peeled off like a skin. I knew then that the sound I heard was the tread >coming off and hitting the frame. The tire was a 2 year old IRC GP-1 that >had lots of tread on it. Does anyone know how/why this happened. > >Jim Cunningham A2 >
I can't really talk about the cause, but you sure nuff chunked a tire. If you want to see what it looked like when racer Steve Rapp did that in the race at Brainerd, take a look at: http://www.amasuperbike.com/000731a.htm That's a link to the article; there are links to photos at the bottom of the story. And here is a link to the followup article: http://www.amasuperbike.com/000803e.htm Anyway, glad you're ok. That doesn't sound like fun. Ralph Ralph E. Hanson 99 KRL 650 http://www.wvu.edu/~journal2

Karl Raupp
Posts: 216
Joined: Fri Apr 21, 2000 10:13 am

yikes

Post by Karl Raupp » Mon Aug 07, 2000 9:52 pm

> >The tire was a 2 year old IRC GP-1 that had lots of tread on it. > >Does anyone know how/why this happened. > >IRCs are relatively cheap tires. you get what you pay for.
Come on now, that's not fair. When was the last time you heard a Kenda or a Maxxis or whatever else come apart like that? I certainly haven't on this list, and they are priced below the IRC. Karl ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

The Squasher
Posts: 102
Joined: Sat Apr 22, 2000 10:55 pm

yikes

Post by The Squasher » Tue Aug 08, 2000 12:01 pm

There are 2 possible answers. 1)someone allready mentioned - poor quality control or manufacturing. 2) Low tire (air) pressure. A tire with low pressure will over heat and seperate the tread from the cord rapings. I have seen this on cars alot. It doesn't have to be a recap like the truck tire treads that you see laying in the road. A kinda funny story - A friend of mine who worked in a gas/service station that installed new tires would always talk about how dumb some people are for driving on a tire that was low on air. At least once a week he would have a tire in his shop that had seperated do to low pressure causing it to over heat. A steel belted tire look real nasty and you should see what the fender of the cars look like. Anyway, one day he was going on a weekend fishing/camping trip with his girlfriend and stopped at my work to pick up something. I noticed his front tire (big 4x4 35" x 12") was low and told him he should fill it up so it doesn't seperate like all those other tire stories he told me about. He said it would be OK. On Monday I saw his truck with new tires on front and one of the fenders looked like it was beat with a ballpeen hammer from the inside out. I asked him what happened did his tire sepperate. All he said was shut-up. His girlfriend told me he didn't fill the tire with air and it sepperated on him. Now when he talks about dumb people he can add himself to the list. Date: Mon, 7 Aug 2000 09:07:33 -0600 From: Jim Cunningham Subject: YIKES When I finally came to a stop and got off the bike I could hardly believe my eyes and a cold chill ran through me! About a foot to foot and a half of the tread on the rear tire was gone! Yes I mean gone; all that was left was the smooth black rubber with cord showing through in places. The tread had peeled off like a skin. I knew then that the sound I heard was the tread coming off and hitting the frame. The tire was a 2 year old IRC GP-1 that had lots of tread on it. Does anyone know how/why this happened. Jim Cunningham A2 ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

Ye Wilde Ryder
Posts: 31
Joined: Sat Jul 22, 2000 8:10 am

yikes

Post by Ye Wilde Ryder » Tue Aug 08, 2000 12:58 pm

>>>The tire was a 2 year old IRC GP-1 that had lots of tread on it. >>>Does anyone know how/why this happened. >> >>IRCs are relatively cheap tires. you get what you pay for. > >Come on now, that's not fair. When was the last time you heard a >Kenda or a Maxxis or whatever else come apart like that?
they have other problems, namely traction, or lack thereof. the expression "rim protectors" was invented for cheap tires such as these.
>I certainly haven't on this list, and they are priced below the IRC.
do what you wish, i'll stick with name-brand tires. call me olde-fashioned, call me conservative, but your tires are the only thing standing between you & a serious crash; thus, i prefer mine to be top-quality. dunlop, metzeler, michelin (for racing), & bridgestone. gears, ye wilde ryder -- wallace@... 99 zx-9r "blue bayou" 98 vtr-1000f "stormy" zwallace@... 86 cr-250 "dirt devil" 00 sv-650 "zipper" "& you were using your friends as a berm." -- RP 83 v65 magna "nasty" FoJ#002...AMA#456832...JHLO#002...COP#000...CCS#SW969...Support the RKBA

Peter Dahlheimer, MD

trail happenings nklr

Post by Peter Dahlheimer, MD » Tue Aug 08, 2000 8:34 pm

ride reports are interesting, but i've not been contributing much in that regard despite lots of time in the saddle so i thought i'd offer up a short but entertaining one for a laugh. it's funny now anyway... my friends and i were tearing around our usual riding area, included in which is a pretty steep and fun climb we call "pork chop hill". sal, a very funny guy and very good friend, was as usual carting around his 250 lb carcass on his 1979XR250 (or maybe XL250S, but that's another story...) and had just climbed pork chop hill for the umpteenth time. however, this time he decided to turn around and head back down. this is not our usual path, but hey there aren't any signs (yet) saying "one way only", so there he went. i was having a ball on my little kx125, churning through the fun piece of single track approaching the approach to pork chop. around the turn i came, peeking up the hill (nobody there... i thought...), and gunning it for the approach. after the last sticker bush slapped me in the face, i directed my attention up the hill. HOLY #&$@! i can't describe the feeling in my stomach as i saw, barreling down the hill straight towards me, this rather big (he's not fat, he's dense) guy (i think he was wearing the holographic "psycho eyes" goggles too...) on the rattiest rat dirt bike you've ever seen (we affectionately call it the armageddon bike). i instantly stalled the bike and (with the help of daul disk brakes heading uphill with a <200 lb bike) stopped on a dime. too late for poor sal, though, as he had basically 1/2 a second to make a decision: hit pete, hit the bush... hmmm... well, at least bushes give. i had about the same amount of time for the prefrontal lobe in my brain to formulate the thought "no, sal, wait, i've stopped", but no time to speak... suffice it to say that a big guy on a little rat bike careening into a really large sticker bush (which thankfully did a terrific job at halting his forward momentum in as gentle a fashion as could be expected) at high speed and then being expelled out the side unharmed is probably one of the most spectacular sights one can witness from such a perspective. sal is working on a new bumper sticker at work. it will say "i bush for brakes". _pete

Post Reply

Who is online

Users browsing this forum: No registered users and 20 guests