Chain Line Question

OK here we go . . .

1) My rear hub is a Dura Ace 120mm (luckily so is the spacing on my frame!) . . .
2) I am looking at getting a pair of Sugino 75s for cranking duties . . .
3) And my bottom bracket shell is 68mm . . .

Q: So my question is, firstly, what length bottom bracket would give me the best (perfect even?) chain line ?

I see the Phil stainless steel BB on http://www.hubjub.co.uk/philwood/philwood.htm has an adjustable (2mm either way) chainline, would this be of any use to me and/or has anyone got experience of these ?

The other BB I was looking at was the Hatta BB, which comes highly recommended, what do you reckon ?

Also do I need to face the BB shell on my frame (the faces are new but have paint on), I normally face the BB shell (or get my LBS to do it) but MTB cranks (especially integrated ones) are fussy about this kind of thing.

[size=30]Any and all input appreciated

I would of thought that a standard axle length for a single chain ring would do it - go to a good bike shop that sells single speed bicycles. Also one thing to bear in mind is that you can get spacers for your fixed sprocket - to move it out - but this will not help in the other direction of course.

The key for you is getting the right taper/length of BB axle - you need to get the stats of the BB that Sugino expect you to use with their cranks. The +/- 2mm on the Phil BBs will allow you to dial things in exactly only if you get it close with that first bit.

hmmm... google is your friend

http://www.suginoltd.co.jp/track_e.html

With the Phil BBs you do not need to face the shell - neither of the cups has a shoulder that bears against these - hence the +/- 2mm.

d_c The key for you is getting the right taper/length of BB axle - you need to get the stats of the BB that Sugino expect you to use with their cranks. The +/- 2mm on the Phil BBs will allow you to dial things in exactly only if you get it close with that first bit.

hmmm... google is your friend

http://www.suginoltd.co.jp/track_e.html

With the Phil BBs you do not need to face the shell - neither of the cups has a shoulder that bears against these - hence the +/- 2mm.

Cheers d_c, very handy, my google powers were weak on this one.