Can i remove a 5 gear sprocket from 26" tire, and replace it with a 7 gear sprocket from a 20" tire? my roomates touring bike is currently a 15 speed, she loves the bike and does not want to replace it. she has ridden my 21 speed and was curious to know if the sprocket from my old 20" tire could be used on her 26" tire, to make riding uphill a little easier. Thanks for all responses.

If the current tire is not 26 x 1 3/8 you can probably put on a wider tire, but don't go overboard, and be sure it will clear the frame on the sides. For example, if you have 26 x 1.75 then 26 x 2.0 would be fine, 26 x 2.25 may be too much.

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Remove rear wheel with either a 15 mm or a 17 mm wrench. Take the tire off the wheel. If you are replacing a tire, reverse procedure. If you have a flat, replace inner tube, then reverse procedure

You can only do this with a sprocket removal tool, avaiable at bike shops. Should cost less then $5

Are you sure the derailer or sprocket are not bent? The next thing if not that is the cable itself is it pulling the delairer to release the gear from the gear it is in? one final is the bike just may not go into 6th gear depending on which gear you have the front sprocket in because it would pull the front sprocket to far past the crank space where the pedals are at.

Sounds like the chain is too tight (should usually be 30-40mm of slack) or the out of alighnment.

To remove any rear freewheel or cassette you will need to purchase a Park Tool. Park Tool is the best brand when it comes to bike repair. Google Park Tool and you can look through their products. You will need a cassette/freewheel remover. There are dozens of different companies that make hubs and cassettes (gear sprocket). Take a look at yours and see what company made it. You can than find out which tool with properly fit your cassette. These tools are made to fit in a wrench making hand removal easy. Some brands will require a chain whip. The only way you will know which too you need is by find the company name on the cassette/hub. Without this tool removal is virtually impossible. If you need help narrowing down which cassette remover you need you can always let me know the company name and I will let you know the proper cassette tool to purchase.

Hello. Actually you do not need to remove the gears or even the wheel to replace a broken spoke. If you are mechanically minded and have tools just let the air out of the tire, pull it to one side and replace the spoke. If you do not have the tools, go to a bike shop for this quick fix. J.

DansComp.com Has BMx Parts And
http://www.bikeparts.com/ Has Moutian bike parts 26 x 1 3/8 might fit

hi
you need a tool called a rear sproket puller, best to take it to a bike shop they will only charge you a pound to take it off there and then in seconds,

A special sprocket removal tool is required usually only $20 to $30 bucks at a decent bike shop.