swapping(?) a 14-34T to cassette
11-02-05, 04:37 PM
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swapping(?) a 14-34T to cassette
I have an 80's vintage Peugeot MB that I am thinking of winterizing. It has only 2 chainrings which makes for more work than I care for on my commute(OK, I'm a fairy) Is it possible to swap the large cassette cog for a 14-34T ?, or do I have to replace the whole cassette, or entire smash ? I'm guessing on the small chainring the derallieurs(god my spelling sucks) could take it, but I am totally ignorant of such things and may be on crack . Any advice appreciated, thank you for your patience . Sorry if this is a SAQ I probably don't know enough to even be dangerous 
scott
scott
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11-02-05, 05:34 PM
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Ditto what Sydney said.
BTW: you can tear cassettes apart and swap cogs. Did this with my current 11-34 8-speed. (it used to be an "ak/an" 11-30)
What derailleur do you have? Cassette? (or freewheel?) What are the front chainrings?
You MAY have a provision for a granny ring on the front (a third chainring). That MAY be the easiest and cheapest fix if your derailleurs can handle the added capacity. (many front ringsets are tapped for a granny already)
BTW: you can tear cassettes apart and swap cogs. Did this with my current 11-34 8-speed. (it used to be an "ak/an" 11-30)
What derailleur do you have? Cassette? (or freewheel?) What are the front chainrings?
You MAY have a provision for a granny ring on the front (a third chainring). That MAY be the easiest and cheapest fix if your derailleurs can handle the added capacity. (many front ringsets are tapped for a granny already)
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11-02-05, 06:05 PM
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thanks- I'll check for markings and see if I can figure it out
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11-02-05, 06:18 PM
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set doesn't appear to me machined to accept another ring, there may be room, but no extra holes for screws. Derailleurs just say Shimano, can't make out any other markings. I was looking in a general repair book about how to distinguish between a cassette and freewheel, but I couldn't do it . I know I'm a tool. Thanks for the replies- I can at least bring it to my LBS and see if it can be done without looking like a complete fool for asking.
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11-02-05, 06:59 PM
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To distinguish a freewheel from a cassette, look down at the opening on the outside - you should see a bunch of ridges around the inside. These are the splines for a freewheel or lockring tool. Give the freewheel/cassette a spin backwards. If it's a cassette, you'll see the splines spin too. If it's a freewheel, they won't move. You'll probably have to take the wheel off in order to see this.
I would guess that you're using a freewheel, since the bike is from the '80s, but early freehubs did come out in the '80s, so maybe not. In any case, if you have less than seven cogs, it's almost certainly a freewheel - there were six-speed cassettes, but they're quite rare. If you have only five cogs, it's definitely a freewheel.
I would guess that you're using a freewheel, since the bike is from the '80s, but early freehubs did come out in the '80s, so maybe not. In any case, if you have less than seven cogs, it's almost certainly a freewheel - there were six-speed cassettes, but they're quite rare. If you have only five cogs, it's definitely a freewheel.
