oops! I might of over-tightened my crank!
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I would consider trying the old crankset, it might not be damaged but a better picture of the square mounting location would give us a better idea.
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Quick question! What if I rode around like this, I'm only riding short distances and probably no more than 5 miles a day? because I mean there isnt TOO much resistance. and I'm going to probably replace all the old parts.
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You will ruin parts. This is a classic case of incompatible parts. The only thing holding the crankarm to the spindle is the pressure from the fixing bolt. The taper on the spindle isn't large enough to put enough torque on the crankarm to properly hold it in place. YOu already saw what happened, your crankarm worked itself loose, the original Sugino. The Sugino isn't the original arm to the Peugeot, that was error one. Error two is replacing the Sugino with another modern JIS taper crankarm.
The proper solution would have been to put a proper JIS taper bottom bracket spindle in place of the old ISO taper bottom bracket if you wanted to continue to use modern JIS crankarms.
Asking if the bike is safe to ride is like bringing a car with grinding brakes to a repair shop and them telling you that you are metal to metal on the braking surfaces and you then asking is that safe to ride without fixing it? It might be doable but you are making the problem worse and potentially putting yourself in harms way.
The proper solution would have been to put a proper JIS taper bottom bracket spindle in place of the old ISO taper bottom bracket if you wanted to continue to use modern JIS crankarms.
Asking if the bike is safe to ride is like bringing a car with grinding brakes to a repair shop and them telling you that you are metal to metal on the braking surfaces and you then asking is that safe to ride without fixing it? It might be doable but you are making the problem worse and potentially putting yourself in harms way.
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You will ruin parts. This is a classic case of incompatible parts. The only thing holding the crankarm to the spindle is the pressure from the fixing bolt. The taper on the spindle isn't large enough to put enough torque on the crankarm to properly hold it in place. YOu already saw what happened, your crankarm worked itself loose, the original Sugino. The Sugino isn't the original arm to the Peugeot, that was error one. Error two is replacing the Sugino with another modern JIS taper crankarm.
The proper solution would have been to put a proper JIS taper bottom bracket spindle in place of the old ISO taper bottom bracket if you wanted to continue to use modern JIS crankarms.
Asking if the bike is safe to ride is like bringing a car with grinding brakes to a repair shop and them telling you that you are metal to metal on the braking surfaces and you then asking is that safe to ride without fixing it? It might be doable but you are making the problem worse and potentially putting yourself in harms way.
The proper solution would have been to put a proper JIS taper bottom bracket spindle in place of the old ISO taper bottom bracket if you wanted to continue to use modern JIS crankarms.
Asking if the bike is safe to ride is like bringing a car with grinding brakes to a repair shop and them telling you that you are metal to metal on the braking surfaces and you then asking is that safe to ride without fixing it? It might be doable but you are making the problem worse and potentially putting yourself in harms way.
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Even if you don't fall off the bike, you'll hit the frame pretty hard if the crank comes off under hard pedalling. If you've got male genitals, you won't have them afterwards...
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I found the State Bicycle Co website, which sells fixie bike parts; the crank the OP is trying to mount has a single 1/8" chainring. I betting however that bobotech is is wrong about the JIS/ISO mismatch. The OEM Sugino VP crank is JIS, so the one would assume the bottom bracket is JIS also, and the State Bicycle Co. crankset uses a 68x103 bottom bracket (unknown ISO or JIS); but regardless as even if there is a mismatch of a JIS BB spindle and the crank, this would cause the crank to sit outboard farther, not less.
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The previous owner put incorrect Sugino cranks on a Peugot ISO bottom bracket. That's probably why the cranks were trashed when the OP bought the bike.
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Bingo, that is exactly what I was worried about. The bottom bracket is an old style ISO with a thinner taper that bottoms out on a modern JIS spindle. The crankarm has sunk too deep onto the spindle.
You will need to replace the bottom bracket spindle with a modern JIS taper spindle and you will probbaly be fine. I bet that even the original SUgino crankarm could still be used. If you keep trying to use the original bottom bracket spindle, you will keep running into this issue of crankarms working themselves loose and causing more damage.
You will need to replace the bottom bracket spindle with a modern JIS taper spindle and you will probbaly be fine. I bet that even the original SUgino crankarm could still be used. If you keep trying to use the original bottom bracket spindle, you will keep running into this issue of crankarms working themselves loose and causing more damage.
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I found the State Bicycle Co website, which sells fixie bike parts; the crank the OP is trying to mount has a single 1/8" chainring. I betting however that bobotech is is wrong about the JIS/ISO mismatch. The OEM Sugino VP crank is JIS, so the one would assume the bottom bracket is JIS also, and the State Bicycle Co. crankset uses a 68x103 bottom bracket (unknown ISO or JIS); but regardless as even if there is a mismatch of a JIS BB spindle and the crank, this would cause the crank to sit outboard farther, not less.
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Assuming the problem is not simply the bottom bracket spindle is just to short for the new crankset (since the State Bicycle Co uses a 103mm), think the problem may be that the crank was designed around a cartridge BB; not loose ball. Older cranks are designed around a flat fixed cup, so the back of the crank is very close to flat. However, some cranks like the OP's new State Bicycle crankset, were made assuming a cartridge bottom brackets would be used and have a tapered profile on the rear of the crank, which would be able to fit a millimeter or two into the splined fixed cup, were if it was a flat fixed cup it would mash up against it; since the OP says the dragging he is feeling is minor, I would guess this is the issue.
The Sugino Vp wasn't original to the 70's era Peugeot as far as I know. According to Velobase, the Sugino VP was an 80's era part but the bike looks like a 70's era bike due to the cable stops.
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It all depends as no one one has asked the OP about the year and model. The Peugeot 1986 mountain bike (Orient Express), came with a Sugino TNF VP crankset.
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I don't think many Peugeots used those old school style cable stops with pump braze-ons in the '80s if at all.
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https://bmxmuseum.com/forsale/pict0333_blowup.jpg
sugino vp crank.
uhhh for the crank that I put on it, it is some local brand called "state bicycle co" I decided to check them out since they were not too bad of a price.
sugino vp crank.
uhhh for the crank that I put on it, it is some local brand called "state bicycle co" I decided to check them out since they were not too bad of a price.
Josh
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Last edited by jjvw; 03-27-13 at 07:47 PM.
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Did you see the last picture the OP posted on the last posts of the previous page? Did you see how the square taper was flush with the crank arm, that is the issue. the square taper on the BB is thinner and not allowing the crankarm to seat properly. JIS vs ISO in the extreme.
The Sugino Vp wasn't original to the 70's era Peugeot as far as I know. According to Velobase, the Sugino VP was an 80's era part but the bike looks like a 70's era bike due to the cable stops.
The Sugino Vp wasn't original to the 70's era Peugeot as far as I know. According to Velobase, the Sugino VP was an 80's era part but the bike looks like a 70's era bike due to the cable stops.
Indeed, I was in a bit of a hurry and wasn't looking that close.
Last edited by onespeedbiker; 03-27-13 at 10:28 PM.
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That's a 70's Peugeot. I'm nearly certain and a low end one too. That also means a French threaded bottom bracket. Assuming the OP wants or needs to replace it, that will only complicate things. Dealing with French bottom brackets is a labor of love. However, Velo Orange makes them just an expensive date.
Here is a 74 A08 that looks real close, but with a cottered crank. https://cyclespeugeot.com/images/1974_Peugeot_AO8.jpg
Last edited by onespeedbiker; 03-27-13 at 10:55 PM.
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Good point about the cotterless crank. We also know that the Sugino cranks are very likely not original. It would make sense that both the stock crank and spindle were both swapped out by a previous owner, as mentioned earlier.
Disregarding the value of the frame, I would be tempted to swap out the entire bottom bracket, cups and all. This is going to be a single speed, correct? Now might be a good time to get the proper length spindle for a perfect chain line.
Disregarding the value of the frame, I would be tempted to swap out the entire bottom bracket, cups and all. This is going to be a single speed, correct? Now might be a good time to get the proper length spindle for a perfect chain line.
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