Bike Forums - will this bottom bracket work on a french bike?

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will this bottom bracket work on a french bike?

http://www.sjscycles.co.uk/product-S...reads-4521.htm

Having some trouble finding a french threaded BB for my peugeot. Then I came across this.

Anyone have any experience with these type of BBs? I assume it would work, but there might be something i'm missing.

An interesting product, looks like one solution to the Fr thread problem.
Not sure why they talk about 1.6mm washers, as it seems that the
BB would accomodate any width from 68 to 73. Maybe the internal
threading is not that robust. I would inquire about what tooling is
used to tighten/loosen the BB and lube the internal thread with suitable
grease. DO NOT use loktite, you would never get it off with the fine
internal threading on the BB.

From Sheldon Browns site:

Quote:

Originally Posted by The Master, Sheldon Brown

These YST bottom brackets fit any threaded 68-70 mm shell, and do not use the existing threads.

The main unit slides in from the right side, and there is a conical lockring that screws in from the left. Uses standard Shimano splined tools.

Uses standard industrial 61903 bearing cartridges, secured by snap rings.

Note! Your frame must be modified (chamfered/countersunk) to permit one of these bottom brackets to be installed. This requires an expensive special tool that your local bike shop may or may not have available (same tool used for Mavic and Schlumpf bottom brackets.)

Once the frame has been modified, a standard bottom bracket will no longer fit.

We were initially very excited to get these in, but we found that the quality was too erratic, so we no longer carry this product.

Having to mod the frame is a big requirement. The bottom bracket is of questionable quality. Sounds like a crap shoot.

Have you absolutely determined that a french thread is required? A lot of Pugs, especially those produced in the 80's and beyond used British.

Quote:

Originally Posted by pat_00 (Post 5984458)

The problem with those is you need to find someone with a chamfering tool to chamfer the BB shell. I can tell you from first hand experience if you skip this step, the outer flange will likely fail. Other than that, they seem to be of ok quality.

You'd be better off with one of these than a piece of junk like that YST:

http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=019

I'm not 100% sure it's french thread yet, I'll have it apart next week. I've dated it roughly to the mid 70s by the decals. However it is an Australian built model, i can't find any info about whether or not they used british thread on the BB.

Just looking at my options, i may not have to replace the bottom cups if i can find a cotter-less axle to fit in the existing bb.

Quote:

Originally Posted by pat_00 (Post 5984458)

This is the standard YST brakcet. Low quality, low everything. It basically is a last ditch effort to revive a bike with F'ed up BB threads.

I remember Sheldon Brown remarking that they stopped selling them cause they blew. Most shops should have this special "frame mod" tool. Once you do it, you can't go back.

okay i'm convinced not to go with this option

thanks for your advice everyone.