Singlespeed & Fixed Gear - Bottom Bracket help - Vintage Jeunet Track

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stanzela
07-03-11, 08:35 AM
Hey all,

I just landed myself a beautiful set of T.A. Specialties cranks for my old Jeunet Track and am hoping to kill two birds with one stone, replacing the now creaky BB while I have it disassembled (hoping for as little down time as possible, this is my daily rider).

http://img1.classistatic.com/cps/kj/100613/578r8/9325hk1_19.jpeg

I am hoping to order a nice Velo Orange but I need to know some specs on the BB. Does anyone know if this is a French thread-job? Any other details on BB sizing would be most appreciated and most helpful. Any other suggestions for the bracket itself (not married to Velo Orange) are also welcomed.

Sorry about the small picture... This guy: http://velospace.org/node/22158 has the same bike and a few more detailed pictures if that helps.

Many many thanks to all.

LocoTracks
07-03-11, 09:16 AM
Asking your LBS would get the most reliable answer. I did that when I had to find out whether my Libertas has French or English threads. (It was English in case anyone cared)
jpaschall
07-03-11, 02:53 PM
If you haven't already, ask the people in Classic & Vintage. Someone over there will probably know.

JohnDThompson
07-04-11, 02:10 PM
Jeunet will almost certainly be French thread.

What's your plan for the present crank? :innocent:
stanzela
07-11-11, 06:20 AM
What's your plan for the present crank? :innocent:

Well, my first plan is to get them off of the bike. My second plan is, well, I hadn't really thought about it. I did some work on the bike this weekend, replacing the chain and rear cog. I wasn't going to because technically you should change all three together so-as to let the wear together, but I had a look at the chainring which EASILY has over a thousand kms on it - and you could barely tell it had been used. All of the ridges on the teeth were still in 100% shape. I was astounded.

So - I suppose they will still be good for use in the future. I will note that the NDS arm is a Japanese Shimano, so if you wanted consistency, you'd need to track down a 170 Peugeot arm.