Bicycle Mechanics - Does this spindle look JIS or ISO?

I have an 89 Peugeot Touraine that I would like to frugally convert to fixed. The stock cranks wont do because the rings are not seperable. I have a set of Sakae Customs that would do the job nicely. Only problem is finding a 70 x 110ish spindle in JIS taper.

It has been a long exhausting search both locally and cyberly. I did find this (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160688336882&category=56197&_trksid=p5197.c0.m619#ht_500wt_1413) one on ebay, and I emailed the seller but he cant be sure. I know that Shimano is supposed to be JIS, but was wondering if someone could tell by looking at it.

The BB threading is english, and I could just get a sealed bracket, but again I am frugal. Plus I like to keep things as original as possible too.

Any insight, or even mocking is appreciated. Thanks.

Highly likely that it is JIS since it's Shimano.

Otherwise, I am not sure if anyone has the acuity to differentiate a 3 degree taper vs a 2 degree taper.

Why are you looking for a 70mm (Italian) spindle when you have an English threaded BB?

Just get a 68x110 UN26/55 sealed unit and be done with it.

Why are you looking for a 70mm (Italian) spindle when you have an English threaded BB?

Just get a 68x110 UN26/55 sealed unit and be done with it.

The inside measurement between the bearing races on the original spindle is 55mm. Through some searching around I gathered that I had a french set with thin cups, and a 70 would be the replacement size. Of course I am still pretty new to this stuff, so I could be mistaken. If I could fit a 68 spindle in my cup set I would be pleased. Can I?

I know it would be easy to buy a new BB, and it may be likely that is whats going to happen, but I am not giving in just yet. Plus I may end up learning something.

Highly likely that it is JIS since it's Shimano.

Otherwise, I am not sure if anyone has the acuity to differentiate a 3 degree taper vs a 2 degree taper.

JIS and ISO both have a 2 degree taper.

Re: your further info that you have a French set -
A French set with thin cups could use a 70mm spindle, but you had stated in the OP that your BB had English threading.

Of course thin cups implies that you have Campy (thin/non-rifled) cups, or a set of Stronglight cups (at least the couple sets I've had are thin), and then a 55mm inside length could work. Campy rifled cups and most of the Japanese BBs I've dealt with are thicker cups, and would use a spindle with a narrower race measurement. I've never measured the race spread on a Shimano track spindle. Did you ask the seller?

I thought by the late 80's Peugot had converted to English threading? Is that completely wrong (and the answer is probably yes).

Highly likely that it is JIS since it's Shimano.

Otherwise, I am not sure if anyone has the acuity to differentiate a 3 degree taper vs a 2 degree taper.

ISO and JIS are both 2deg taper; it's just that one tapers down further than the other. IOW, your crack will sit in a slightly different position if mounted on the "wrong" spindle but it won't be damaged.

http://sheldonbrown.com/bbtaper.html

IOW, your crack will sit in a slightly different position if mounted on the "wrong" spindle but it won't be damaged.

:eek:

I emailed the seller again to inquire about the race spread. Im still not sure why I just dont by a cheap sealed one. Stubborn I guess. Thanks for the help everyone.

My mistake you are all right.

Shimano might have made some ISO spindles before they conquered the world since that was the de facto standard for higher end (eg track) bikes. If that spindle is both 'Italian' and made for track cranks I wouldn't be surprised if it has an ISO standard spindle, especially if it's NJS compatible.

The taper difference means that a JIS spindle will mount up as if it is 5mm longer than a same-length ISO spindle.
One issue is that an ISO spindle may bottom out in a JIS crankarm, with either the shoulders at the bigger end of the taper flats hitting the inside face of the crankarm or the bolt bottoming on the end of the spindle. In either case, a proper interference fit may not be realized. In practice though, it usually works out ok.

Searching for a specific spindle becomes a hassle if you don't have a box of spindles to select from. In this case, I think the $20 cartridge bb is the way to go, especially a Shimano unit because you likely will never need to service or replace it.

The Peugeot's threading is English, 68mm.