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BMX Bottom Bracket...

Old 02-13-07, 10:32 PM
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BMX Bottom Bracket...

Let's face it... BMX Chainrings are awesome!

I have a fixed gear frame. I am considering installing a BMX Crankset and Chainring on it.

I would like a square tapered bottom bracket with 165mm crank arms.

I know the real issue is the BB threading. I see that some BMX cranksets come in "Euro" threading. Is that the same as "English" threading on a Track/Road frame?

I appreciate your help... thanks.
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Old 02-13-07, 10:39 PM
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I saw a fixie today with profiles and it's the sex! https://www.fixedgeargallery.com/2007/feb/Pt_2.htm
I'm pretty sure "euro" bmx = english on a roadie.
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Old 02-13-07, 10:42 PM
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Yes, it's the same as euro. Some good cranks to look at are odyssey's 41 theremals and wombolts, and profiles.
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Old 02-14-07, 10:00 AM
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And Fly's
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Old 02-14-07, 01:52 PM
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Old 02-15-07, 12:56 AM
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I have profiles on my fixie too.
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Old 02-15-07, 07:41 AM
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go with profiles.

i got mine used and they were ridden by 2 or 3 people before they came to be but there still in great condition.
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Old 02-15-07, 10:40 AM
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Redline Device cranks are nice, light, and cheap.
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Old 02-15-07, 01:11 PM
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I love the Profiles, do they come in a square taper?
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Old 02-15-07, 02:36 PM
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No, but why does that matter?
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Old 02-15-07, 02:55 PM
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well, interchangeability, and I feel more secure with a ST BB.

Unless there is something you can tell me about BMX splined BB's compared to ST.
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Old 02-15-07, 05:41 PM
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Originally Posted by exfreewheeler
I love the Profiles, do they come in a square taper?
If i'm thinking the right thing...
You might be looking for something like Primo cranks. They have a square taper ish spindle.

Hardtoexplain.
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Old 02-15-07, 10:25 PM
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I'd say it dosent matter at all, think about the abuse these cranks are made to take, you wont have problems thats for sure.
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Old 02-15-07, 10:29 PM
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Originally Posted by exfreewheeler
Unless there is something you can tell me about BMX splined BB's compared to ST.
Well, they're three-quarter inches in diameter and they have forty-eight splines, for starters...
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Old 02-17-07, 09:20 PM
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a profile 19mm spindle is IMMENSELY stronger than any ST spindle... interchangabiliy? get profiles and never have to change them, ever. smoother, stronger, stiffer, bigger bearings, interchangable sprockets, look better than any rodabike or ss cranks.
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Old 02-19-07, 06:04 AM
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Are Profile BB loose ball or cartridge bearing?
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Old 02-19-07, 06:04 AM
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Definatly not loose BB
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Old 02-19-07, 07:28 AM
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Originally Posted by exfreewheeler
Are Profile BB loose ball or cartridge bearing?
Cartridge.

Originally Posted by sbcdestroy
a profile 19mm spindle is IMMENSELY stronger than any ST spindle... interchangabiliy? get profiles and never have to change them, ever. smoother, stronger, stiffer, bigger bearings, interchangable sprockets, look better than any rodabike or ss cranks.
I don't know about the stronger part. But you are definatly(sp?) are on key with the smoother, stiffer and cleaner looking.
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Old 02-19-07, 09:30 PM
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A lot of companies are changing their gear over to spline.

ST is just less maintenance along with sealed bearings.

That's one of the qualities I want in a crankset, along with good solid strength.
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Old 02-20-07, 06:52 PM
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profiles
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Old 02-20-07, 07:11 PM
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Profile cranks spin on four cartridge bearings (euro BB) --way better than any square taper could ever hope to be.

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Old 02-21-07, 11:05 AM
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Originally Posted by exfreewheeler
well, interchangeability, and I feel more secure with a ST BB.
keep in mind, different crank manufacturers require different BB tapers. if you change cranks out there might be the chance you will have to change out the BB also.
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Old 02-21-07, 03:46 PM
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The cranks usually come with the compatible bottom bracket.
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Old 02-21-07, 04:20 PM
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Originally Posted by exfreewheeler
A lot of companies are changing their gear over to spline.

ST is just less maintenance along with sealed bearings.

That's one of the qualities I want in a crankset, along with good solid strength.
What effect does the taper interface have on maintenance? I don't get it.
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