Bicycle Mechanics - Changing rims

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA

View Full Version : Changing rims

radioflier
07-03-04, 08:30 AM
I have a Specialized Expedition Deluxe comfort bike with 26 x 1.95 tires; I like everything about this bike except for the size of wheels/tires. I would like to move to a more road-worthy bike without changing bikes. Can I upgrade my existing bike by swapping out the rims/tires with 700 x 38 rims/tires? I prefer not to change bikes at this time; I see a recumbent in my future (2 years max) and don't want to spend a bundle of money to change rides. I ride about 500 miles/year.

Retro Grouch
07-03-04, 11:30 AM
Almost surely not. Likely issues are getting the brakes to line up and interference at the chain stay bridge. You could probably realize most of the benefits of the wheel change by installing a set of 1 1/2" slick tires.
Raiyn
07-04-04, 12:12 AM
Almost surely not. Likely issues are getting the brakes to line up and interference at the chain stay bridge. You could probably realize most of the benefits of the wheel change by installing a set of 1 1/2" slick tires.
Ooooh I get to pick on Retro Grouch! :D
Actually he couldn't get away with a 26 x 1 1/2" tires because that tire has a ISO Bead Seat Diameter of 571 mm while his current 26 x 1.95 tires have a ISO Bead Seat Diameter of 559 mm. He could however get away with a 26 x 1.5 tire as the ISO Bead Seat Diameter would be the correct 559 mm.

First rule of tires: Fractions and Decimals don't mix.
http://img6.exs.cx/img6/5666/smilebig.gif

Retro Grouch
07-04-04, 05:33 AM
Ooooh I get to pick on Retro Grouch! :D
Actually he couldn't get away with a 26 x 1 1/2" tires because that tire has a ISO Bead Seat Diameter of 571 mm while his current 26 x 1.95 tires have a ISO Bead Seat Diameter of 559 mm. He could however get away with a 26 x 1.5 tire as the ISO Bead Seat Diameter would be the correct 559 mm.

First rule of tires: Fractions and Decimals don't mix.
http://img6.exs.cx/img6/5666/smilebig.gif

Oops, my bad. I knew that.

You know of course, Raiyn, that it's only a matter of time before I find an opportunity to get you back.
madpogue
07-04-04, 07:59 PM
Sooooo, what about a tire marked "26x1"? It has neither a decimal nor a fraction....
Raiyn
07-04-04, 11:26 PM
Oops, my bad. I knew that.

You know of course, Raiyn, that it's only a matter of time before I find an opportunity to get you back.
I welcome you to correct me. We need to give the best info we can.

Sooooo, what about a tire marked "26x1"? It has neither a decimal nor a fraction....
Actually it could be one of two things it could be a "26x1" which would most likely also be labeled as a 650 C giving it a ISO Bead Seat Diameter of 571 mm. OR It could be a "26x1" labled as a 26x1.0 which would have a ISO Bead Seat Diameter of 559 mm. Considering the noted lack of the ".0" I'd say it would be the first selection.
http://img18.exs.cx/img18/8386/smile6stickouttoungue.gif