Tubes Why Did My Tire Blow? Any Detectives Out There?

Discussion in 'Bicycle Repair' started by 5-7HEAVEN, Jul 18, 2007.

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  1. 5-7HEAVEN

    5-7HEAVEN Guest

    8) Howziit guys. my bike sat in my car,windows up, 87 degrees, open parking lot for 3 1/2 hours. when i opened the doors, the car's interior was very hot, and the bike frame too hot to handle. i took the bike out of the car and i rode it in the lot for 10 minutes while waiting for my wife to finish work. just pedalling around, since i'd removed my rack mounted engine. when the wife arrived, i folded the bike up, drove home, carried it into my apartment to reinstall the engine kit. i parked the bike in the middle of the room, let the bike set for 3 hours(76degrees room temperature)...then the front tire blew. it scared the dickens outa my dogs and me, who were in the room!
    I had new PRIMO tires and tubes installed 2 weeks ago at the bike shop. i set the tire pressure at 100psi, as recommended, on sunday.
    just very curious why you guys think the new tire tube blew. i was bummed, as i reinstalled the engine kit and wanted to ride the bike to work this morning.
    thanks for any input.

  2. gone_fishin

    gone_fishin Guest

    just a guess...maybe there was tire damage from the pedal-trip and you didn't notice it? this could possibly account for a "bubble" of tube being exposed...that's what happened to me on my trip down the coast. if i had more thoroughly inspected the back tire i would have made the trip without any problems.
  3. az cra-z

    az cra-z Guest

    Watch out for what the tires are rubbing against when you put them in the car. I NEVER get flats when pedaling, but every time I put a bike in a car or truck I get a sidewall scuff that eventually (or quickly) kills the tire.
  4. 5-7HEAVEN

    5-7HEAVEN Guest

    8) Thanks for tips, guys. the repair shop showed me that the valve stem blew out, a quarter inch above the tube. he said it was a freak accident. i asked him about leaving the bike in the car with 100psi tires. he said it shouldn't have mattered, but said i could run w/80psi. since i bought the tires&tubes from him 2 weeks ago, he replaced the tube free, in a few minutes.
    from now on, i'll run 98psi in the tires. :cool:
  5. 100 psi

    Wow! 100 psi? Forgive me, but those must be some mighty hard Just seems like a lot to me, considering that I inflate my schwinn typhoon cord 1.25's to 30 psi. Heck, ya could almost go scuba diving with one of those things with all that PS; Should be gettin' my rebuilt rear wheel tomorrow or the next day!!! Yay!!!
  6. larymor

    larymor Guest

    I run my MB tires at about 50 lbs.
  7. drimpact

    drimpact Member

    I guess this is on topic, so I will chime in. I run the max pressure listed on my tires. 65psi at present
  8. thatsdax

    thatsdax Guest

    I was going to say .....

    I was going to say the same thing.. 100 psi? Wow !! That is what I run in my road bikes. Is this a road bike? I run 45 maybe 50 on all my other bikes. But..They are not road racers with 700c. with 100psi, I have had a couple of road bike tires slip the bead and blow . A real shot gun blast for sure. I 'll bet the dogs ran !!! Makes me want to run !! A lot of energy at 100psi. 50 is a lot. Enjoy the ride..
  9. minibiker

    minibiker Guest

    i think the best way to run them is what the tires recommend if you dont somethings gonna blow sooner or later maybe 5-7 got fancy tires and tubes that were ment for that kind of pressure
  10. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:wow, old post.

    yep, they're PRIMO tires. bike shop owner said to drop to 90psi, even though recommended tp is 100psi.

    the ride is rock hard on my DAHON. i'll be using OEM tires at 30psi on my cruiser with "twins".

  11. I had a blowout with slime tires. It was hot out and it was inflated to 40 psi. I think it was the slime.
    I got solid rubber tires now. No more flats. No more air pump. No more patch kit. No more dirt and leaves packing inside rim. No more worries. Much more fun.
  12. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:after 2 months, i finally got around to fixing my flat rear tire yesterday. (for those riders with STATON gear chain drive and multi-speeds, you know the hassle of removing/reinstalling the rear tire.)

    remembering the harsh ride of my PRIMO tires inflated at 100psi, i took both wheels to EKI CYCLERY to swap to softer tires. the tech there recommended that i simply drop tire pressure to 65psi. after replacing the rear tube, i reinstalled the wheels, put fresh gas/oil in the tank.

    after 100 pulls, the 50-mile engine wouldn't start, so i called it a night. i figured it out while sleeping that the engine's choke was on.

    the next morning, sure enough, the choke was on. with it off, the MITSUBISHI engine started on the first pull!

    after a 12-mile ride, i realized that the DAHON bike's ride was now VERY comfortable, with lower tire pressure and a 12" seat. the lower pressure REALLY made a BIG difference!

    the DAHON is still a squirrely bike, but that's another topic.

  13. Well 5-7, my Schwinn Alloy Seven is kinda squirrly on the corners as well, with 10 guage rear wheel spokes, 14 guage front wheel spokes, and my 350 pound kiester purched upon (I don't even know my tire pressure...between 25 and 30 psi..usually just a little more in the back tire). I can feel the frame "give" just a bit. That part about remembering that the choke was on while you were asleep, I can definitely relate to as well. I've experienced many such occurances..he he. I'm waiting on my new drivebelt from GEBE right now. I'm just like a big 'ol kid about this bike! lol. I'm growing concerned about my rear tire's a Schwinn Typhoon Cord 26X2.125, and I'm seeing the bead curve up, and seating just slightly higher into the rim for about a 3" stretch. There is still quite a bit of room for it to slip out before the tube protrudes, and blows. I'm thinking about just getting another rear tire, and perform the "all too familiar" task of breaking down the whole rear end, and replacing the tire, (whitch fits very tightly onto the ryno lite rim), fun, fun fun. lol
  14. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:Roy, this bike is squirrelly on the flats! take one hand off the handlebar, and the bike has a mind of its own.

    Lean back slightly at 15mph, hit the throttle hard and the bike wants to scoot out right from under you.

  15. Ya better be careful with that thing J/K
  16. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:You are absolutely correct, Roy. for this 20" bike, a 2.2hp MITSUBISHI engine is at its maximum for borderline safety, power and speeds close to 30mph(comparable to 41mph on a 26" bike).

  17. Dockspa1

    Dockspa1 Guest

    I doubt that you would even feel the difference between a 100 pound tire and a solid tire.
    I run mine low for the comfort factor with no shocks except on the seat post.
  18. Update; The rear tire 26X2.25 Schwinn Typhoon Cord (whitewall), tire went flat. It appears that I may have goofed up the Mr Tuffy tire liner installation so that it didn't lay flat between the tube, and the inner tire, where the ends of the Tuffy overlap. The wrinkles rubbed my tube raw, and it began to leak. I discovered also that the Schwinn Typhoon tires were designed to fit Schwinn rims. That tire was so tight on that Sun rim that I damaged the bead just trying to get the tire off to repair the flat. I still don't know how I got the thing on there. I hit the bike shop, and picked up a 26X2.25 generic california beach cruiser tire (whitewall), and puncture resistant extra thick tube. I think I got the Tuffy liner in right this time, and I fell right in love with that new tire. (The Tuffy on my front tire is doing fine). Ya can really feel the difference in cornering. Got that thing for $14.99. Darn good tire. I think it was made for Giant. The only thing about those whitewalls is trying to keep 'em I've gone through a lot of Fast Orange hand cleaner on those...hehehe. Anyhow, I aired that one up to 50 psi, and it felt hard as a rock even with me sittin' on it. I think I'll let a few pounds out, to help take some of the shock. These Indy streets just keep gettin' worse too....really gotta keep yer eyes open for the big bumps/holes/CRATERS!! lol.
  19. That's really movin on that 20 incher! I'd have to choose the right stretch of street here in Indy to do those kind of speeds, like the 26" setup...these streets are terrible/dangerous for the motoredbike rider. I'll bet that thing is a lot of fun though..hehe. I know ya can't even mount a GEBE on that 20" bike. I don't even think ya can mount one on a 24"....not
  20. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:Hey Roy,

    yeah, the lil bike takes off like a moped!

    looking to build 2 or 3 more bikes, all with mucho hp. maybe i'll gear them lower, to keep speeds down to 35mph.:rolleyes: