Help me find bottom bracket size !

PB Forum :: Dirt Jumping & Street
Help me find bottom bracket size !
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Posted: Mar 24, 2015 at 14:55 Quote
Hey I have a hutch rattlesnake frame that I was given and it needs a new bottom bracket (bearings) and I was wondering what size I would need ? I can't find anywhere online about the size so I fingured I would ask.

Posted: Mar 24, 2015 at 14:59 Quote
its a mid size bb.

http://easternbikes.com/parts/bottom-brackets/

Posted: Mar 27, 2015 at 20:28 Quote
Thanks. What does I.D. Size mean ?

Posted: Mar 28, 2015 at 1:40 Quote
if you mean O.D, it means Outside Diametre

Posted: Mar 29, 2015 at 14:08 Quote
Nope, I mean inner diamater size. How do I know what size I need ?

Posted: Mar 29, 2015 at 17:22 Quote
Youravgcdn wrote:
Nope, I mean inner diamater size. How do I know what size I need ?
The inner diameter size depends on what size crank spindle you have. What cranks are you going to use?

Posted: Mar 29, 2015 at 17:56 Quote
They were on a bmx bike, but that's all I really know ..

Posted: Mar 29, 2015 at 18:07 Quote
Youravgcdn wrote:
They were on a bmx bike, but that's all I really know ..
Are they 48 spline or do they have pinch bolts and an 8 spline spindle? If they're an 8 spline spindle than they are 19mm. If they are stock cranks or low end ones then they are 19mm also. Only higher end aftermarket cranks are offered with 22mm or 24mm spindles. If you post a pic of them I can tell you what size they are.

Posted: Mar 29, 2015 at 18:13 Quote
They are 8 spline with bolts

Posted: Mar 29, 2015 at 18:14 Quote
They're 19mm for sure then.

Posted: Mar 30, 2015 at 12:37 Quote
mserno75 wrote:
They're 19mm for sure then.

You wouldn't know what size a cr3 bb was would you. Think it's a euro outboard... Poss 68mm threaded,

Posted: Mar 30, 2015 at 13:35 Quote
Yeah, probably a "Mid" bottom bracket.


Unsecure image, only https images allowed: http://p.vitalbmx.com/assets/images/product_guide/bottom_brackets.jpg
Difference between Euro, Mid and Spanish Bottom Brackets
http://www.moovebikeco.com/mtb/difference-between-euro-mid-and-spanish-bottom-brackets



This website doesn't say:

http://www.genesiscycle.ca/product_detail.php?pid=52



Frame

Full Cro-mo Jump with Integrated Head Tube and BMX rear dropouts for 26" Wheels


Fork

RST Dirt 100mm Travel


Brake

Avid BB7 Rear Disc, 160mm Rotor


Cog

12T


BB

Sealed precision bearing


Crank

Square Tubular Cro-mo 175mm x 25T, 8-Spline


Wheels

Weinmann ZACX Alloy 36H Rims, Alloy Nutted Hubs,
Kenda K-Rad 26"x2.3" Tires


Extras


31.8 Bore Handlebar, PIVOTAL Seat & Seatpost, CNC Alloy Platform Pedals,
Chain Tensioners, Extra Long Brake Cable for spin


Colours

Matte Black with White Stem, Chainring & Rims
Lime Green with White Stem, Chainring & Rims
Matte Purple with White Stem, Chainring & Rims


Unsecure image, only https images allowed: http://www.genesiscycle.ca/product_more/218_rattle-prpl2.jpg

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