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Old 08-21-2013, 07:51 PM   #1
gearheadE30 OP
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rear tubes work on the front!

well, only kinda sorta. I had a blowout at 80 mph on the way to dinner with my GF today. I must have hit some debris I didn't see, because there is a ~2" gash through the tube and tire. Very sudden deflation, and mostly luck that I didn't go down. Limped it home with a rear (18x4.25) tube on the front 21" rim at <40 mph. It leaks a little, but in a pinch, it can actually work. Thank you, some previous owner, for stashing that tube in there. I owe that guy a sixer sometime. The adrenaline still hasn't worn off...
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Old 08-21-2013, 07:56 PM   #2
steveWFL
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nice
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Old 08-22-2013, 06:14 AM   #3
SpeedyR
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wow. i wouldnt have thought that a rear would fit in the front (putting an 18" tube on a 21" wheel).

I always carry a spare in a front fender bag and always carry a 21" tube. it's smaller, lighter and you can use it on the rear with no problem. I've done so a couple of times. it just expands to fit the tire (it's thin so take it easy but it works fine). But I've never been able to stretch an 18" rear tube to fit on a 21" rim and I would have thought that the extra rubber (140/150 vs 90 width) would make it hard to not pinch when installing and a lot of extra rubber in there to heat up and rub.

i guess you learn something new every day.
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Old 08-22-2013, 06:16 AM   #4
Martynho
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Shonky

Sounds a bit shonky, but good to know you can do it to get you out of fix
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Old 08-22-2013, 08:28 AM   #5
gearheadE30 OP
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Quote:
Originally Posted by Martynho View Post
Sounds a bit shonky, but good to know you can do it to get you out of fix
Yeah, there's a good reason I didn't go over 40 mph... it got me 20 miles back home, and that's as far as it's going until I get a new tube and tire, as I would imagine the structural integrity of a tire is compromised somewhat by a 2" gash... I'll also be keeping a spare front and rear tube in the fairings, just in case.
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Old 08-22-2013, 01:15 PM   #6
SpeedyR
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small tip and I know it works on small bikes but if you have a tear in the sidewall of the tire, you can cover the cut on the inside with paper money and put the tube in. just enough reinforcement to keep everything inside the tire and out of harms way. fold it up a few times but it's pretty strong when it comes to tearing/burst strength. if you are further away and can spare it, part of the old inner tube, camelback bladder, anything else that's big enough to cover the gash and will not tear easily works. even a bit of padding from your armor can be cut up if really needed. improvise. :)
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Old 08-22-2013, 08:31 PM   #7
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Yeah, that's a good call. I was so hyped after almost biting it that I didn't really think about the gash being an issue til later. I really wish it had been on a worn out tire...seems like a waste of a perfectly good Mefo.
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