chrisgraham81
10-08-04, 01:58 PM
Im about to start bidding on a french nevar crank set. The posting says it has french threads. what exactly does that mean? Would that work on a Ross frame from the 70's
Singlespeed & Fixed Gear - French threads?
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*new*guy
10-08-04, 02:19 PM
I've never had a reason to try, but I doubt french would work with what is probably an ISO bottom bracket.
bostontrevor
10-08-04, 02:35 PM
It means that you'll need to come up with french threaded pedals to go along. I believe they should fit a standard square taper BB spindle.
progre-ss
10-08-04, 02:54 PM
I'm pretty sure you meant French threads like these...
icithecat
10-08-04, 03:58 PM
French threads on an English bike? Not just a bad fashion statement, but not do-able. Different pitch etc.
schiavonec
10-08-04, 04:53 PM
different tpi sheldonbrown has a bunch of info on the specs
DieselDan
10-08-04, 07:19 PM
Frech threads are 1mm apart, English threads are 35 threads per inch. They aren't interchangable. Forget them.
bostontrevor
10-08-04, 09:57 PM
I don't know what universe you all live in, but my cranks aren't threaded to my bottom bracket spindle. What it will affect is the threading of the pedals so you'll have to get some french threaded pedals (different thread pitch and diameter). The square taper will still fit your English/ISO BB.
Poguemahone
10-09-04, 05:17 AM
It refers to the threading of the pedals. I'd be carefull, though-- if you're bidding on ebay, many sellers simply assume that French made cranks are, well, French threaded. This is not always the case-- most of the French made cranks shipped to this country in the seventies and on were in fact English threaded for the pedals. It's a guessing game, and unless the seller has actually checked the thread pitch, there's a chance the cranks are actually English. Certainly if the crank is of eighties vintage, it's very likely the threads are English.
A competent shop can tap out French pedal threads to English.
A competent shop can tap out French pedal threads to English.
Jumbo
10-09-04, 08:44 AM
french threaded bb on french threaded frame
bostontrevor
10-09-04, 08:50 AM
Um. But this is for cranks, not a bottom bracket.
cicadashell
10-09-04, 02:45 PM
chrisgraham...is it these? (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=56197&item=7105648861&rd=1)
this auction lists "BB cups" and says "taken off a Gitane frame, french threads". if this is what your bidding on, i'd ask the seller for confirmation, but it sure looks like you would be getting french threaded bottom bracket, which would not work on your frame. but you may be able to use the spindle with your existing BB. the pedals will be hard to find, however, but getting them tapped is possible, as Poguemahone noted.
ask the seller, confirm. those are kinda cool, watch out, i might snipe you for 'em (kidding!).
this auction lists "BB cups" and says "taken off a Gitane frame, french threads". if this is what your bidding on, i'd ask the seller for confirmation, but it sure looks like you would be getting french threaded bottom bracket, which would not work on your frame. but you may be able to use the spindle with your existing BB. the pedals will be hard to find, however, but getting them tapped is possible, as Poguemahone noted.
ask the seller, confirm. those are kinda cool, watch out, i might snipe you for 'em (kidding!).
chrisgraham81
10-09-04, 03:31 PM
no its cool, i just got a crankset from the LBS
nicelysmiling
10-12-04, 09:33 AM
What about pulling a crank on a Peugeot? Will a standard crank puller work, or will I need a french one?
cicadashell
10-12-04, 03:00 PM
What about pulling a crank on a Peugeot? Will a standard crank puller work, or will I need a french one?
older stronglight cranks have unique threads and require a specific tool. other brands are probably okay. if the puller you have does not thread in easily yet firmly, stop immediately and proceed to your lbs.
older stronglight cranks have unique threads and require a specific tool. other brands are probably okay. if the puller you have does not thread in easily yet firmly, stop immediately and proceed to your lbs.
Tom Pedale
10-12-04, 03:39 PM
Im about to start bidding on a french nevar crank set. The posting says it has french threads. what exactly does that mean? Would that work on a Ross frame from the 70's
Could be a couple of French threads at work here...
If you are bidding on a Nervar crankset withbottom bracket cups and axle, the bottom bracket cups are french thread and will notfit the Ross frame. You would have to buy english cups.
If the crankarms are threaded for french thread pedals, you have two choices: buy french thread pedals
(not so easy to find) or tap out the crankarms for english thread pedals (depending on the expertise of who's doing it, may risk completely ruining the threads of the crankarm).
Other considerations; if you plan on keeping this crank long enough that you wear out one or both of the chainrings, it has a "weird" bolt pattern, meaning that replacement chainrings would be difficult and/or costly to find.
My advice- don't bid on this crankset, find an English threaded one that uses the most common bolt pattern (130mm). Chainrings using this bolt pattern fit Shimano and most other quality cranksets.
Could be a couple of French threads at work here...
If you are bidding on a Nervar crankset withbottom bracket cups and axle, the bottom bracket cups are french thread and will notfit the Ross frame. You would have to buy english cups.
If the crankarms are threaded for french thread pedals, you have two choices: buy french thread pedals
(not so easy to find) or tap out the crankarms for english thread pedals (depending on the expertise of who's doing it, may risk completely ruining the threads of the crankarm).
Other considerations; if you plan on keeping this crank long enough that you wear out one or both of the chainrings, it has a "weird" bolt pattern, meaning that replacement chainrings would be difficult and/or costly to find.
My advice- don't bid on this crankset, find an English threaded one that uses the most common bolt pattern (130mm). Chainrings using this bolt pattern fit Shimano and most other quality cranksets.
glomarduck
10-12-04, 06:29 PM
I have a circa 1980's la coq sportif jersey those are some pretty good French threads.
Poguemahone
10-12-04, 08:02 PM
"older stronglight cranks have unique threads and require a specific tool."
Same with older TA cranks, although it's a different tool than the stronglight. (23.35mm SL versus 23.3mm TA)
Stronglight cranks that are labeled "Peugeot" take a standard crank remover.
Same with older TA cranks, although it's a different tool than the stronglight. (23.35mm SL versus 23.3mm TA)
Stronglight cranks that are labeled "Peugeot" take a standard crank remover.
Ceya
10-12-04, 08:14 PM
French parts are hard to get. French threaded BB is even rarer.
S/F,
CEYA!
S/F,
CEYA!