In the process of converting my Cannondale R900 to a SS... Problem is it has vertical dropouts and I don't want an ugly ass tensioner. How does the eccentric BB work? What spindle would I use?

Aside from this kook who claims he invented one back in 2006 I've never heard of an eccentric square-taper BB that works in a 68mm threaded BB shell, so you may be up the creek.

philcentric bb if you REALLY want to overpay and waste your time.

Seriously...it would be cheaper to throw the Cannondale in the trash and get another frame.

Unless your frame is designed to use an eccentric bottom bracket, you're not likely to find one that will fit.

You could, however, use an eccentric hub, such as the one from White Industries:

This ^^^ or find the magic chainring and cog sizes , so there is just the right chain length.. to have the right tension

a half link gets you to the nearest 1/2"

here is their double freewheel flip flop version they also make the best freewheels..

single and 2 in 1..




...

Thanks guys... just wasn't sure how they worked

It is made from beer cans so please continue its life by recycling.

I am shocked Phil is still producing the Philcentric. They just came out with a Pro alloy version even. Who is buying them?

R+E makes the Bushnell eccentric and you may want to call or email to see they have a solution.
Worth a 30 second email to find out.


-Tim-

^lol

I suspect Phil Wood isn't "producing" them. They probably have a few on the shelf and they have the plans and materials. They're a machine shop, so if they run low and a customer calls, they just make another. That is why Phil Wood is so expensive. There is no assembly line, no batches of thousands or even hundreds. And why, if you want a component that has "this part" 0.5 cm longer, it just isn't a big seal for them.

Ben

Dude... I forgot all about those movies... that and Police Academy.

Phil isn't about trend setting new products all the time, they are about making high quality stuff for various applications. They still make BBs and cups for Swiss threads and Chater-Lea because if they don't who will and if someone can still get nice parts for their old bike, it is pretty nifty.

My face always lights up with a smile when I see that little red script Phil logo. I know it is MUSA quality that hasn't changed and won't change.

I feel the same way. They recently had a post on their IG feed showing a new batch threaded EBB's being made and I couldn't believe there is enough demand. I love that they're the kind of company who will make just about anything you need if you're serious enough about it.

It is quite nice and refreshing from the sea of crap that exists. Look at us we just invented a new BB the BB74-452, for the pressiest of fits in only one obscure frame from a small village in Romania, it will fit our new 31.74mm cranks which have a 106BCD for our aero boss chainrings and will creak like hell unless you use our special anti creak tool only $900. Buy it now and add .000000000000000000000001 watts of power to ride which was tested in our Sporkalized Win-ier Tunnel.