2 quick questions

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1/16/2018 1:53 PM

I am seeing a few new frames this year in 21.65 and 21.8 TT lengths ....Are these specifically setup for 22 inch wheels or as a tall person am I just getting lucky with some longer frames?

2nd question is has anyone run 34/9 gearing before and how big will my calves have to be to make this possible....?

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1/16/2018 2:06 PM
Edited Date/Time: 1/16/2018 2:08 PM

BcBMX80 wrote:

I am seeing a few new frames this year in 21.65 and 21.8 TT lengths ....Are these specifically setup for 22 inch wheels or as ...more

Ive been wanting to try out so 20" wheel 22" frames. Thats exciting.

And wouldnt that size sprocket hit your chainstays?

At the very least I dont think a good chainline would be easily had. I guess you could maybe dimple your chainstay if it doesnt fit without tons of spacers.

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1/16/2018 2:08 PM

I wasn't able to find 20" wheel bikes with frames above 21.25".
And are you taking about the sprocket size for your second question?

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1/16/2018 2:11 PM

BcBMX80 wrote:

I am seeing a few new frames this year in 21.65 and 21.8 TT lengths ....Are these specifically setup for 22 inch wheels or as ...more

Yes, there's a lot more companies making 20" wheel size 21.5"TT-22"TT frames for us taller folk!

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1/16/2018 2:14 PM

BrooklynGoon wrote:

I wasn't able to find 20" wheel bikes with frames above 21.25".
And are you taking about the sprocket size for your second ...more

There isn't any 20" wheel size "completes" with over 21.25" tt, but there's many aftermarket frames.

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1/16/2018 2:17 PM

A lot of 20" frames are coming in larger TT sizes now.

34t sprockets will not fit majority of modern frames.

& I've rode 36/9. I was 13-14 so it felt like hell. My brand new 410 chain snapped before I got a block away on it. I wouldn't go past 32/9 and that's even pushing it. Too much tension for too small of a chain.

Definitely get a Shadow Supreme or Wipperman 1G8 if you decide to try it. Anything else will snap real quick.

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1/16/2018 2:38 PM

That's awesome! I'm building up that 21.5" tallboy but I have always been curious about even bigger sizes.

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1/16/2018 2:42 PM
Edited Date/Time: 1/16/2018 2:47 PM

how bout 30/8
i know that 8t drivers are not that durable but still

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1/16/2018 2:46 PM

tiho wrote:

how bout 30/8
i know that 8t drivers are not that durable but still

Thats way too much tension on the little 8t driver. You'll go through chains and driver bearings like it's nothing. And pedaling will not be enjoyable at all, assuming you have a chain that can handle the stress..

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1/16/2018 3:12 PM

Is it becasue you're getting a new rear wheel? If so, just get a 28 tooth sprocket to go with it..

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1/16/2018 3:17 PM
Edited Date/Time: 1/16/2018 3:18 PM

HardBMX_Tim wrote:

Thats way too much tension on the little 8t driver. You'll go through chains and driver bearings like it's nothing. And ...more

yeah but id rather just change driver bearings every few months and have better chainline than eat shit because of bad chainline
no matter what chain you have, it WILL break sooner or later if its that crooked (34/9)

but anyways, who the heck needs that much power?

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1/16/2018 3:24 PM

tiho wrote:

how bout 30/8
i know that 8t drivers are not that durable but still

HardBMX_Tim wrote:

Thats way too much tension on the little 8t driver. You'll go through chains and driver bearings like it's nothing. And ...more

tiho wrote:

yeah but id rather just change driver bearings every few months and have better chainline than eat shit because of bad ...more

34/9 (3.77) and 30/8 (3.75) are essentially the same gear ratio. The smaller 8t driver adds even more stress to the chain, not to mention they use smaller, weaker bearings to begin with.

I wouldn't recommend running either really.. just going to break a chain and have to buy a smaller sprocket anyways I would think.

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1/16/2018 4:11 PM
Edited Date/Time: 1/16/2018 4:13 PM

HondaCRFRacer wrote:

Is it becasue you're getting a new rear wheel? If so, just get a 28 tooth sprocket to go with it..

Sorry Guys, Yea its fr my old T1 Barcode its from 2001 i run a 34T profile on it and cant go smaller only bigger with a crappy 13T cassette and just wanted to upgrade my rear wheel, I can only find wheels with 9T which is why I asked how hard it would be to pedal lol.

Ill prolly just wait until get my new frame and give my barcode to my wife.

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1/16/2018 5:07 PM

The new S&M Credence Black Magic Frame looks like it can fit a monster dong sprocket and it comes in 21.5" TT.

Matty Aquizap Bike Check:
Photo

Yep, that's a 41-tooth Quad Saw sprocket of death!

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1/16/2018 6:53 PM

I bet that's easy to peddle... Lol

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1/17/2018 2:01 PM

They're longer frames for 20" wheels
I wouldn't run anything bigger than 30/10
I run 28/16 and I have bigger calves, but my wheels were cannibalized off of my old dyno detour 2001, I'm gonna run 28/9 when I get bigger wheels

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1/17/2018 2:20 PM

Just get a new front sprocket. You're supposed to get new everything, sprocket, chain, cassette. Keeps everything running smooth. 25/9 is gonna be a little harder to pedal, then what you have now. 28/9 will feel like it's really hard to pedal, but you'll probably adjust. I'd just stick with 25/9, but that's me. I never go fast enough to justify 28/9, and I like the snappy responsive feeling of 25/9, especially in tight spots, and small parks.

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1/17/2018 2:26 PM

ggallin422 wrote:

Just get a new front sprocket. You're supposed to get new everything, sprocket, chain, cassette. Keeps everything running ...more

I honestly didn't notice much difference going from the 25 to the 28 but if I try going back to the 25, it's absolutely horrible as I spin out almost from the first crank.

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