Author Topic: usa loose ball type to seal BB (Read 2784 times)

level · « **on:** August 12, 2011, 11:59 AM »

hey guys, I'm thinking of swopping out my bottom bracket on my 96 DB venom pro for a sealed version. cranks are 8 spline.

Can i just buy a US size sealed BB, and fit it with my original cranks? or is it more complicated?

Cheers,

J

pickle · « **Reply #1 on:** August 12, 2011, 12:03 PM »

i'm thinking you might need to change the cranks as well as the axle will probably have a thread on it for the locking nuts?

if so then have a look at the Radshop as i'm sure Stodgy does a crank with sealed BB for about £50 all in

level · « **Reply #2 on:** August 12, 2011, 12:15 PM »

yeah, spindle is 19 mm.

Just trying to get the heap running smooth for the London to Brighton.

pickle · « **Reply #3 on:** August 12, 2011, 12:16 PM »

have a look on the bmxcity ebay page, they have BB's on there for about £10

pickle · « **Reply #4 on:** August 12, 2011, 12:21 PM »

get a set of these in black for £45 all you'd need is a set of cups which people on here will have

http://www.radbmxshop.co.uk/shop/article_511.001/BLANK---Cromo-3-Piece-Crank-Set-_-Mid-BB---SALE.html'shop_param=cid%3D16%26aid%3D511.001%26

BENDYCAT ELEVENTEEN · « **Reply #5 on:** August 12, 2011, 12:24 PM »

go for a set of sweet chrome jobs (peds not included )

level · « **Reply #6 on:** August 12, 2011, 12:37 PM »

thanks guys,

I dont have the pinch bolt on the bottom, the arms are held on buy an allen key bolt, that screws into the spindle.

level · « **Reply #7 on:** August 12, 2011, 12:45 PM »

pickle · « **Reply #8 on:** August 12, 2011, 01:31 PM »

yep, i'm afraid you'll need a new crank as well then as your axle won't allow sealed bearings over the threaded collers.

HEYWOOD BMX · « **Reply #9 on:** August 12, 2011, 01:47 PM »

Strip it down and get the Vernier calipers out.I have a crankset here which is looseball USA size the(where the arms/chainring fits) but the parts where the bearing sits is the same diameter/thread pitch as a regular one-piece crank.Got one of these to fit with no probs.New crankset will prob be cheaper

http://www.evanscycles.com/products/dna/sealed-bottom-bracket-for-1-piece-cranks-ec007730