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Chasing the BB? re:Look KG281 from totalcycling(12 posts)

Chasing the BB? re:Look KG281 from totalcyclingMade in Taiwan
Aug 23, 2001 11:56 PM
this is the description i got from

Look kg281 BBQ Carbon frame
US $1200
Weight.....ya da ya da .......... Requires english bottom bracket....

if it's requiring English BB, then doesn't that mean that the BB is chased already?

in case if it's not, where do i go to get the BB chased?

By the way, im getting the black one with clear coat over the CF, not the ones made for kelme, bigmat, credit agricole.. so maybe mine doesn't need to be chased.
needs to be done...rib-eye
Aug 24, 2001 4:41 AM
chasing merely "cleans" the threads of iregularities and burrs left by imperfections in manufacturing of the BB housing. One should always chase it before a new install. Any LBS should easily be able to do this for you.
re: Chasing the BB? re:Look KG281 from totalcyclingDebby
Aug 24, 2001 4:54 AM
Ribeye already gave you the answer, but I'll just add to it. The lbs will chase and also face the sides of the bottom bracket. If you were to just install the cups yourself without doing this, the cups would probably not sit flush against the outside edges of the bb shell. Facing makes the sides of the bb square. (In laymans terms, ha ha)

I just had my lbs do this for me on a NOS Waterford built Paramount.

Good luck with your new bike!
Aug 24, 2001 5:09 AM
Is this typical of all manufacturers? Seems like rather poor machining and finishing for what is intended to be a market ready product.
Aug 24, 2001 5:25 AM
Seems to me that the frame builder should take the extra couple of minutes to make the BB shell ready to accept a BB.
very typicaltcr01
Aug 24, 2001 5:33 AM
This has always been industry standard. Once the paint goes on, the frame is sent out the door. Don't complain. This is and should be the builders responsibilty. If a person doesn't even know the importance of "facing", they should not be building up a frame. Ecspecially a frame that's over a thousands clams.
Oh and don't forget...Debby
Aug 24, 2001 5:41 AM
the derailleur hanger should be chased also. BTW, my lbs only charged me $10 to do both (bb and derailleur hanger).
re: Chasing the BB? re:Look KG281 from totalcyclingIan
Aug 24, 2001 7:18 AM
First I would say, lets define chasing. Is it, removing paint from an already machined surface? Or is it, removing metal to make two surfaces square?

Either way, my KG281 required that neither be done. My Specialized FSR required paint to be removed from the headtube, but the bottom bracket was fine.

I believe most high end manufacturers take care of all chasing needs these days. I may be wrong, but that was the impression that I had.
re: Chasing the BB? re:Look KG281 from totalcyclingmackgoo
Aug 24, 2001 7:50 AM
Chasing is basically taking the correct tap and cleaning the threads, as well as the facing. If you ask the manufacturer I would bet they expect that to be done. Some frames may come through not needing it but it doesn't hurt and 10 bucks is not a whole lot.
re: Chasing the BB? re:Look KG281 from totalcyclingIan
Aug 24, 2001 11:05 AM
OK, you got me curious so I called them. They take care of it at the factory, so it does not have to be done, but as you said, it doesn't hurt if a shop does it also.
Cut to the Chasegrzy mnky
Aug 24, 2001 8:14 AM
What people have brought up is all true, however, it's mostly a non-issue these days. I'll bet a donut that all one has to do is slap the BB in and get on with it.
Cut to the ChaseDebby
Aug 24, 2001 8:38 AM
You're probably right - my frame is an '86 that had never been built up. I did install the bb first to see how it would be - definitely needed to be faced, so I removed the bb and took it to the lbs.