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French bike, triple dreams
I have a Peugeot PX10 from the 1970s, which makes a dandy touring bike.
But I'm not so young anymore. I converted it to all Campy many years ago, but now want to put a triple crankset on for loaded touring without going broke in the process (TA would be nice, but would cost more than $300 once I finish paying for the new bottom bracket, chainrings, etc.--if anyone knows where to get a triple TA with French thread for cheap, lemme know). Any rate, what I'd like to do is replace just the spindle, keeping the existing Campy cups and bearings, and then throw on a Sugino or equivalent, i.e. affordable, triple. Is this possible? Anyone know what spindle would work with the Campy bottom bracket and a crankset with a 30-tooth inside chainring (or even lower)? I want something with a 52 tooth big ring for when the wind's at my back and a granny bail-out gear for when it's not. Any other options to get me to my destination for $100 or so would be much appreciated. Thanks. |
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#2
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French bike, triple dreams
bruceinillinois wrote:
I have a Peugeot PX10 from the 1970s, which makes a dandy touring bike. But I'm not so young anymore. I converted it to all Campy many years ago, but now want to put a triple crankset on for loaded touring without going broke in the process (TA would be nice, but would cost more than $300 once I finish paying for the new bottom bracket, chainrings, etc.--if anyone knows where to get a triple TA with French thread for cheap, lemme know). Any rate, what I'd like to do is replace just the spindle, keeping the existing Campy cups and bearings, and then throw on a Sugino or equivalent, i.e. affordable, triple. Is this possible? Anyone know what spindle would work with the Campy bottom bracket and a crankset with a 30-tooth inside chainring (or even lower)? I want something with a 52 tooth big ring for when the wind's at my back and a granny bail-out gear for when it's not. Any other options to get me to my destination for $100 or so would be much appreciated. Thanks. I think you're on the right track with the Sugino idea. There are some serendipitously compatible Campy-Sugino combinations, though they may not be the ones you'd need. I'd check with Andy Muzi at yellowjersey.org, who sells the Suginos and knows about BB-compatibility issues. He might even be able to supply a French-thread BB cheap, who knows, although Sheldon Brown seems to specialize more in the French-thread stuff (http://www.sheldonbrown.com/harris/). Once you get the crank & BB sorted, you *may* need a new front derailleur, and almost certainly a new rear one, unless yours is already a long-cage affair. Good luck, Mark |
#3
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French bike, triple dreams
Thanks, Mark. I know Sheldon Brown is the pro on this kind of stuff,
but I'm hoping for a second opinion in hopes of finding a cheap-o but effective way to do this. I think I could probably put a Phil Wood BB on--$100 for the BB, and another $45 for the retainer rings(apparently Phil still offers a French thread version) from Sheldon--then go with a $40 Nashbar-brand triple (52-42-30), but Lordy. A Sugino set-up would be so sweet--and, this just in, his Web site now says they have Sugino BB's (cups only) in French thread. I'll deal with the derailleur bridge when I get to it. I've got two options for the back: A Campy Rally or (better yet) a mint-condition Cyclone (my spare parts bin is straight from the wayback machine). The front promises to be much more of an adventure, especially if I throw caution to the wind and find a crank with a 28. I recall Cyclone (maybe it was Huret) made some wacky looking front derailleurs with extra-long cages that could handle something like that. We shall, hopefully, see. Mark wrote: bruceinillinois wrote: I have a Peugeot PX10 from the 1970s, which makes a dandy touring bike. But I'm not so young anymore. I converted it to all Campy many years ago, but now want to put a triple crankset on for loaded touring without going broke in the process (TA would be nice, but would cost more than $300 once I finish paying for the new bottom bracket, chainrings, etc.--if anyone knows where to get a triple TA with French thread for cheap, lemme know). Any rate, what I'd like to do is replace just the spindle, keeping the existing Campy cups and bearings, and then throw on a Sugino or equivalent, i.e. affordable, triple. Is this possible? Anyone know what spindle would work with the Campy bottom bracket and a crankset with a 30-tooth inside chainring (or even lower)? I want something with a 52 tooth big ring for when the wind's at my back and a granny bail-out gear for when it's not. Any other options to get me to my destination for $100 or so would be much appreciated. Thanks. I think you're on the right track with the Sugino idea. There are some serendipitously compatible Campy-Sugino combinations, though they may not be the ones you'd need. I'd check with Andy Muzi at yellowjersey.org, who sells the Suginos and knows about BB-compatibility issues. He might even be able to supply a French-thread BB cheap, who knows, although Sheldon Brown seems to specialize more in the French-thread stuff (http://www.sheldonbrown.com/harris/). Once you get the crank & BB sorted, you *may* need a new front derailleur, and almost certainly a new rear one, unless yours is already a long-cage affair. Good luck, Mark |
#4
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French bike, triple dreams
bruceinillinois wrote: Thanks, Mark. I know Sheldon Brown is the pro on this kind of stuff, but I'm hoping for a second opinion in hopes of finding a cheap-o but effective way to do this. I think I could probably put a Phil Wood BB on--$100 for the BB, and another $45 for the retainer rings(apparently Phil still offers a French thread version) from Sheldon--then go with a $40 Nashbar-brand triple (52-42-30), but Lordy. A Sugino set-up would be so sweet--and, this just in, his Web site now says they have Sugino BB's (cups only) in French thread. I'll deal with the derailleur bridge when I get to it. I've got two options for the back: A Campy Rally or (better yet) a mint-condition Cyclone (my spare parts bin is straight from the wayback machine). The front promises to be much more of an adventure, especially if I throw caution to the wind and find a crank with a 28. I recall Cyclone (maybe it was Huret) made some wacky looking front derailleurs with extra-long cages that could handle something like that. We shall, hopefully, see. Bruce, I have done something similar with my ca. 1974 Motobecanne Grand Jubile. I found some Sugino french thread cups (but I think your Campy cups will work, just be aware that there are 2 versions: standard and those with thinner "walls" that are similar to French made cups (e.g., Stronglight). This will affect your choice of spindles), an NOS Shimano XT (FC-730) crank and an NOS Shimano DX FD. I used a fairly short spindle, giving a chainline more like a double, since I would only use the granny on the innermost 3 cogs. I also spread the rear to accept a 7 SP FW. It all works wonderfully, and the Moto is one of my favorite rides. |
#5
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French bike, triple dreams
greetings bruceinillinois,
i have two recommendations 1. For a vintage look, get a campy triomphe double crank (116 bcd) on ebay for about $10 - $20. Triplizer bolts are $5 at www.biketoolsetc.com. The inner 35T and 36T rings are still available, occasionally, from places like www.bicycleclassics.com, i believe, or email me for other possible sources. This crank uses a 109 mm bottom bracket, so on a nuovo record 112mm bottom bracket a triple chainline might be almost perfect if you add an inner ring. Achievable front gear combos are 35/42/52, of maybe 36/42/53, depending upon ring availability. 2. Otherwise, get a veloce or centaur double or triple and use a 9-speed chain. Common gear combos are 39/53 or 30-42-52. Bicycle cog width HASN'T CHANGED (mostly 1.8 - 2.0 mm) in about 40 years, what has changed is that chains have gotten more narrow _on the outside only_, and the space between front chainwheels have gotten more narrow to avoid jams between the chainwheels. So you will have no difficulties running a 9-speed or even a 10-speed (campy-type) chain on your vintage rear freewheel. Note that 10-speed shimano HAS CHANGED the cog width, so stay away from that stuff. The AC-H bottom bracket should work just fine. Good luck!! - Don Gillies San Diego, CA |
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French bike, triple dreams
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#8
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French bike, triple dreams
Thanks, Don. Yeah, French is weird. I've considered the Phil Wood
option, which at present is my fall back position. I just wanna engineer something that works for less than the bike is worth, which is about $200 in real money and priceless in sentimental value--we've been through a lot together, including Seattle-to-Monterey-and-back, western Montana, Oregon Cascades and loads else... Donald Gillies wrote: (Donald Gillies) writes: The AC-H bottom bracket should work just fine. Whoops, i missed the "french cups" aspect to your email, sorry !! The two common solutions to this problem are (a) Buy a new wider spindle, sheldon advertises them, or (b) Get a Phil-wood type of bottom bracket. A variant of (b) Is to just purchase the Phil Wood retaining rings (french threads), and use a Shimano UN-72 bottom bracket (out of print - look on Ebay, UN-71 and UN-73 won't work), or Campagnolo Chorus or other discount cartridge where both cups are removable. - Don Gillies San Diego, CA |
#9
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French bike, triple dreams
bruceinillinois wrote: Hey Now, Don't tell anyone, but old Motebecanes rawk. Once found a Le Champion (bright orange with black decals/detailing and full Campy, mint) I would like to find a Le Champion, with the lilac paint job. If the one you found was orange with Campy stuff, I think it was a Team Champion. for a little bit of nothing that fit my mom, who stands 5'3", and got so jacked she started buying Jack Taylors, then Kleins and beyond. I think I stole it for $300 or so before Michael Jackson released his first solo album. Eventually became my sister's bike. But that's another story. Googled the part number and came up with nothing. Hmmmm. That's promising, somehow. Do you mean the XT FC-M730 crank? It is long discontinued; from the pre-XTR days when XT was essentially Dure-ace quality for touring/mtb use. I found a guy who had a few a couple of years ago and bought three. The Sugino XD is a good choice, too, but a bit more "modern" looking. I like the XT both for it's quality and it's classic looks. Have to confess, though, I have no idea what a DX FD--wait: You mean front derailleur, right? Yes a Shimano DX FD-M650. I wanted an XT but couldn't find one. There's really not much difference anyway. OK. I'm ready to shame myself and go to the Shimano Dark Side, so long as it works. Well, if you have an easier time with Suntour (you mentioned a Cyclone RD), some of the old Suntour MTB stuff (XC-Pro, XC-Comp) will work just fine, too. I've had some suggestions to just go with a mountain bike triple, but that's not gonna work because I'll be needing (I hope) that 52. Sugino makes a 52 in the 110mm BCD Tell me, what's the tooth sizes you got with your triple? It came 46/36/26. I put on 48/38/28 Like I say, I'll settle for a 30, but I prefer a 28. Or even a 24. Like I say, I'm getting old.... (And I know better than to go with granny in front and anything smaller than a 20-or-so in back). And, if you know off the top, how long is the spindle you're running? IIRC, the spindle is 116mm. If you decide to go with (and can find) an XT/DX/LX crank from that period, let me know and I'll measure it to be sure. The Nashbar folks say theirs fits a 115mm spindle. Then again, they also mentioned the word "cartridge" in telling me what works. Sigh. The Nashbar crank is made by Tracer. It's a 130/74 mm BCD crank, not a 110/74 like the Sugino XD or my Shimano XT. Decent quality, but very "modern" looking. OTOH, it comes with the 52T outer you want You could swap out the 30 for a 28 or 26, if needed. A 24 *might* be impractical, possibly exceeding the capacity of the FD. It takes a 115mm symetrical spindle, but something a bit might work (haven't tried it)if you want more of a double chainline, with the granny mounted very close to the chainstay. wrote: bruceinillinois wrote: Thanks, Mark. I know Sheldon Brown is the pro on this kind of stuff, but I'm hoping for a second opinion in hopes of finding a cheap-o but effective way to do this. I think I could probably put a Phil Wood BB on--$100 for the BB, and another $45 for the retainer rings(apparently Phil still offers a French thread version) from Sheldon--then go with a $40 Nashbar-brand triple (52-42-30), but Lordy. A Sugino set-up would be so sweet--and, this just in, his Web site now says they have Sugino BB's (cups only) in French thread. I'll deal with the derailleur bridge when I get to it. I've got two options for the back: A Campy Rally or (better yet) a mint-condition Cyclone (my spare parts bin is straight from the wayback machine). The front promises to be much more of an adventure, especially if I throw caution to the wind and find a crank with a 28. I recall Cyclone (maybe it was Huret) made some wacky looking front derailleurs with extra-long cages that could handle something like that. We shall, hopefully, see. Bruce, I have done something similar with my ca. 1974 Motobecanne Grand Jubile. I found some Sugino french thread cups (but I think your Campy cups will work, just be aware that there are 2 versions: standard and those with thinner "walls" that are similar to French made cups (e.g., Stronglight). This will affect your choice of spindles), an NOS Shimano XT (FC-730) crank and an NOS Shimano DX FD. I used a fairly short spindle, giving a chainline more like a double, since I would only use the granny on the innermost 3 cogs. I also spread the rear to accept a 7 SP FW. It all works wonderfully, and the Moto is one of my favorite rides. |
#10
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French bike, triple dreams
"bruceinillinois" wrote in message oups.com... I have a Peugeot PX10 from the 1970s, which makes a dandy touring bike. But I'm not so young anymore. I converted it to all Campy many years ago, but now want to put a triple crankset on for loaded touring without going broke in the process (TA would be nice, but would cost more than $300 once I finish paying for the new bottom bracket, chainrings, etc.--if anyone knows where to get a triple TA with French thread for cheap, lemme know). Any rate, what I'd like to do is replace just the spindle, keeping the existing Campy cups and bearings, and then throw on a Sugino or equivalent, i.e. affordable, triple. Is this possible? Anyone know what spindle would work with the Campy bottom bracket and a crankset with a 30-tooth inside chainring (or even lower)? I want something with a 52 tooth big ring for when the wind's at my back and a granny bail-out gear for when it's not. Any other options to get me to my destination for $100 or so would be much appreciated. Thanks. I am doing this exact conversion on a 70's vintage Crescent bicycle. Swedish bike with a French-threaded BB. Go figure. Anyway, your Campy cups will work with the majority of old-style square taper bottom bracket spindles. There are 2 types of Campy cups, thin and thick. In my experience, the thick cups outnumbered the thin by a wide margin. If you have the thick cups, then any of the 3-series BB spindles will be compatible, which were 90% those ever made. French BB's were the same width as English threaded (68mm), so you should a lot to choose from. My plan is to keep the existing cups and bearings, and replace the BB spindle with something about 127-130mm wide for use with a Sugino AT crankset. I pulled the crankset off of a bike at the local recycling depot. Excellent cold-forged crankset with 28-40-52 rings. Total cost: $5 for the spindle and a few more bucks for a Shimano long-cage front and rear derailleurs. Spend $100 for a Phil Wood BB? As if...... |
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