Stolen Score Gear Ratios

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11/28/2013 10:28 AM

Hiya,

Im new to bmx. The last one I owned was a Raleigh Night Burner back in the day. The non oval framed one. It was sweet and it had a normal freewheel.

I've just bought a 2012 Stolen Score and I'm tying to change the gear ratio to make it easier for my 8 year old to ride. I can't go any lower on the chainring. It is already at 25T. It has a 9T cassette driver on the back. I was thinking that I could buy a replacement with 11T. Is this possible? After one whole afternoon on the internet Im begining to think not.

Hope someone will be able to help me out with this. Thanks,

Juniper

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11/28/2013 10:36 AM

There are sizes under 25t. 23t and 24t are pretty easy to find. There are some 20t and 22t sprockets. Look around.

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11/28/2013 10:40 AM
Edited Date/Time: 11/28/2013 10:46 AM

im looking now..... nothing on ebay...ah, just found some 23t..

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11/28/2013 10:43 AM

Try:
Winstanleys
Chain reaction cycles
Evans Cycles
Source BMX
BMX-Shop
20twenty

There's never a good selection of good quality new parts on Ebay.

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11/28/2013 10:57 AM
Edited Date/Time: 11/28/2013 10:57 AM

Winstanleys has got some 23t chainrings. ill give them a go. Do I need an adapter from 19mm - 22mm for them to fit on the crank?

Im pretty much stuck with the 9t on the back unless I change the wheel then?

p.s. thanks for your input.

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11/28/2013 11:04 AM

you can buy a new 10-11t driver i guess (for the cassette)

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11/28/2013 11:04 AM

If your sprocket already has an adaptor, then you can just re use it unless you buy a sprocket with a 19mm bore (Which is unlikely). Otherwise you will need a 19mm to 23.8mm (15/16") adaptor.

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11/28/2013 11:08 AM
Edited Date/Time: 11/28/2013 11:10 AM

ivancuestabmx wrote:

you can buy a new 10-11t driver i guess (for the cassette)

I'm 99% sure there isn't one that will fit.

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11/28/2013 11:14 AM

ivancuestabmx wrote:

you can buy a new 10-11t driver i guess (for the cassette)

BMX_Forever wrote:

I'm 99% sure there isn't one that will fit.

i don't know, in the stolen webpage it says that the cassette is sealed

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11/28/2013 11:18 AM

ivancuestabmx wrote:

you can buy a new 10-11t driver i guess (for the cassette)

BMX_Forever wrote:

I'm 99% sure there isn't one that will fit.

ivancuestabmx wrote:

i don't know, in the stolen webpage it says that the cassette is sealed

Doesn't mean any sealed one will fit though. They are all different sizes and have different numbers of pawls, etc.

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11/28/2013 11:22 AM

BMX_Forever wrote:

I'm 99% sure there isn't one that will fit.

ivancuestabmx wrote:

i don't know, in the stolen webpage it says that the cassette is sealed

BMX_Forever wrote:

Doesn't mean any sealed one will fit though. They are all different sizes and have different numbers of pawls, etc.

yeah i know, i realized that my comment didn't make much sense haha, anyways he might want to try to remove the driver and check the pawls and size etc

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11/28/2013 11:41 AM

It sucks that they dont make standard size drivers and that you're stuck with just the teeth that you buy the bike with! Ill go with the 23T chainring and see if it makes a difference. If not, I've got a bike for sale. Shame 'cos I do like it but it's not for me after all...

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11/28/2013 12:10 PM

Tbh, 25/9 is already really low. A lot of us run 27-30/9. I think youre better off just letting him get used to that gear ratio, at first it may seem rough, but its the recommended gear ratio, same as 44/16 that comes on Walmart and old school bikes. He'll grow muscle and be used to it in no time. I ran 23/9 and it was honestly annoying. It was easy to pedal, but I barely accelerated. It was almost like riding chainless, id pedal but go no where. Just my two cents.

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11/28/2013 2:46 PM

HardBMX_Tim wrote:

Tbh, 25/9 is already really low. A lot of us run 27-30/9. I think youre better off just letting him get used to that gear ratio, at first it may seem rough, but its the recommended gear ratio, same as 44/16 that comes on Walmart and old school bikes. He'll grow muscle and be used to it in no time. I ran 23/9 and it was honestly annoying. It was easy to pedal, but I barely accelerated. It was almost like riding chainless, id pedal but go no where. Just my two cents.

25/9 isnt low for a kid likely undersized for the bike, but for most of us it seems a little low
im sure you can find a 22 or 23 tooth sprocket
http://www.danscomp.com/saleproducts-PARTS/458156/Tree_Lite_Sprocket.html 24 tooth, wont feel much different, and 50 bbucks may be more than you are willing to spend
look around on some online shops, or ask your lbs if tthey can order one

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11/28/2013 3:32 PM

Buy your son a smaller bike. Keep that bike though, he will grow into it. Cult and Sunday both make great 16" and 18" completes that can really help his riding in the long run. If he can't pedal a 25/9 it is likely his legs are not long enough for the standard 175mm cranks, giving him not enough leverage. Ideally, he should have 160mm-165mm cranks and a 23t sprocket.

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11/28/2013 3:39 PM

get a 18t

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11/29/2013 6:23 AM

Thanks for all the comments guys, It's been really useful and has helped me get my head round a lot of stuff. I'm gonna try him on the Score with a 23T for now. Hopefully he'll like it.

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