I have a question

[model-a]

Hey guys I have a question about something I am building a bike not a BMX bike nothing against BMX bikes but I'm a old fart and that is part of my question. I need a smaller sprocket for the bike I'm building because I think the smaller sprocket in the front pedals a lot easier and I think there are like 25 tooth sprockets like the bike I have know is like 45 I think. Ok any info would be great thanks guys.

Chris,model-a

 

[DJ Bill]

Um.....yes, smaller front sprockets make the bike pedal easier...and are often found on the ladies model of a particular bike. Larger rear sprockets will do the same thing. You can switch coaster brake sprockets pretty easy on newer hubs..What bike/crank /hubs are we talking about and what is your specific question? You will loose top speed but if that isn't a concern why not make it easier...

 

[model-a]

Right on Bill don't really care about speed I had my hip replaced so need it to be easy to pedal thank you bill.

Chris,model-a

 

[Uncleg084]

I'm an old fart but into BMX.

 

[Araya51]

I don't know what's considered old fart but I'm also into bmx bikes too..

 

[Uncleg084]

I'm 53.

 

[mikeeebikey]

Old farts! Ha, my Dad is old, not me!
For bmx we used the following...
1 tooth in the rear equals 4 teeth in the front, bigger front harder to pedal, bigger in the rear easier to pedal.

 

[The Black Monark]

I'm cool with a smaller chain ring up front.
Round here a 52t chain ring doesn't make it for me. Changing the cog helps, but requires more chain.

 

[model-a]

I guess I just feel old 51 but I just had my hip replaced so not really looking for speed.

Chris,model-a

 

[CCR]

look for bikes with wheels smaller than 20" and you will usually find some small sprockets that will work with one piece cranks. I think yoothgeye has converted some of the 25t sprockets from porkchopbmx to work on a one piece crank too.

 

[mikeeebikey]

I run 36/16 on the smaller diameter tires, 17 rear for 2.2125" and above.
Please note, I run 180mm cranks.

 

[LIVE TO RIDE]

I would not try a 25 tooth sprocket.You would have to drop your rear down to appx a 10 tooth and your rear hub will only go down to appx a 16 tooth.Run a 39 tooth up front and a 17 to 20 tooth cog in the rear.Simple pedaling that wont have you just spinning out.

 

[Loosenuts]

I just went through this as I'm trying to rehab a broken knee. On my cruiser I went from a 46T to a 39T and it worked out well. Any smaller and it would have been to much.

 

[Bicycle808]

Chris/model-a, what ratio, front/rear, are you running now? Dropping too low will create really fast spinning, and that could bother your hip, too. I'd play with the rear as much as I could before swappi ng the front, but if you tell us what you're working with, we could probably advise you....