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Help with tires.(7 posts)

Help with tires.Toothpick
Oct 14, 2002 6:00 AM
Would appreciate advice..here goes. Old road bike..dusted it off, got new tires/tubes. Wheel size is 27 x 1 1/4. New IRC tires 27 x 1 1/8 rated 105 psi. First ride, got a pinch flat in tube of rear. Mechanic told me not enough air - be sure to have at least 90 psi - I prob had about 60 in it. I aired it up to 100 - short while later - blew tire off rim. Replaced tube and reinstalled tire. Aired it up to 90 - OK went for a ride and all was well. 2 days later prior to ride aired it up to 90 - few minutes later - boom. I'm thinking that the 1 x 1 1/8 tire size is marginal, and that possibly I need to go with 1 x 1 1/4 tire/tube combo. Thoughts?
How old is the bike?Spoke Wrench
Oct 14, 2002 6:15 AM
Older bikes had straight sided rims. They won't retain a high pressure tire reliably. I'm guessing anything over 85psi is going to be pretty iffy. I'd tend to go with your 1 1/4" idea too because rim widths weren't standardized back then.

I don't know for sure when the hook bead rims came into vogue. I'd guess around the early to mid 70's.

If you want to try out bicycling, I'd recommend renting a more modern bike. I think that the fun factor will be night and day better.
How old is the bike?Toothpick
Oct 14, 2002 7:49 AM
Thanks for the reply. Very old (and rare, :-) ) bike. 1978 Schwinn Traveler III - tank. About 12 yrs. ago (it was old even then) I rode it from 100 to 120 per week for 2 summers. It's still in great condition - I just pulled it out and plan on using it this winter for exercise/conditioning before making a new bike purchase in the spring. I figure if I can ride this thing and get in better condition, the fun factor of a new "light" bike will be that much better. I also don't really want to get a new bike until spring.
How old is the bike?desmo
Oct 14, 2002 3:17 PM
get 1 1/4's, they're swell for winter slop. if you ride that thing seriously all winter you should be ready to kick butt on a real bike come spring.
kick butt? just hoping to be able to stay up. n/mToothpick
Oct 15, 2002 1:43 PM
Danger! Danger!Kerry
Oct 14, 2002 5:48 PM
All the tires you're going to find today will be hook bead, and those rims are not for hook bead tires. Catch 22. You might try somebody like Sheldon Brown, but I think you're in trouble here. Go with the 1&1/4 and hope they hold air, but don't be surpised if they don't stay on the rim. If you want to buy tires for that '37 Packard, you're not going to find them at Discount Tires and they won't be cheap. Quite possibly same situation here. This was a cheap bike in the first place, and by today's standards it's a pretty sorry excused for a decent ride. If you want to ride a bike, this is not your path to true enlightenment. Look around for a 10 year old used decent bike, which can be had for $200 or less.
37 'Packard, huh? But it's red. It's gotta beToothpick
Oct 15, 2002 1:42 PM
fast. Right? Yeah, it's an old/cheap/ heavy bike, but it will do for my purposes until the end of the winter. It's solid, quiet and with the exception of the tires, still reliable. I'll try the narrower tires I have with less pressure - probably around 70lbs or so. Otherwise, I found some 1 1/4 tires with wire beads that are "cheap enough" I guess. That'll do until I get a real bike next spring. I enjoy riding the old one (as well as shopping for a new), so I'll have that much more enjoyment/enlightenment come springtime. Thanks for the advice/reply.