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Front Derailleur "10 speed" means what?

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Front Derailleur "10 speed" means what?

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Old 03-28-20, 09:07 AM
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ts99
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Front Derailleur "10 speed" means what?

Maybe dumb question, but I'm looking for a replacement front derailleur for my 1977 bike, i.e., 10 speed is 2x5.

Saw this "vintage" 105 that says "10 speed". 10 speed cassettes didn't come out until the 2000s, which I wouldn't consider vintage. 105 started in the 80s, so it could be from then and they're saying it's from a 2x5. Or does it matter for front derailleurs? Would a 2000s 10 speed front derailleur be too narrow for my 5-6 speed chain?

And while I have you, is a triple ring front derailleur that different from a double ring one?

https://www.ebay.com/itm/Vintage-Shi....c100290.m3507
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Old 03-28-20, 09:26 AM
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Bicycle parts descriptions can be pretty bad on the internet. Especially if you're shopping for something pre - 2000's. The first thing you need to know for your bike is the clamp diameter. So, measure the outside diameter of your downtube and, make sure you get the right clamp size FD. Generally speaking, just about any old Shimano FD with the proper clamp size will work for a 2x5 friction set up. (Avoid the old high normal Suntour FD's unless that's what you want). Triple ring FD has a longer range of motion and, sometimes a different arm geometry and, you would need to adjust the limit screws to prevent shifting the chain completely off the rings.
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Old 03-28-20, 09:39 AM
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Originally Posted by ramzilla
Bicycle parts descriptions can be pretty bad on the internet. Especially if you're shopping for something pre - 2000's. The first thing you need to know for your bike is the clamp diameter. So, measure the outside diameter of your downtube and, make sure you get the right clamp size FD. Generally speaking, just about any old Shimano FD with the proper clamp size will work for a 2x5 friction set up. (Avoid the old high normal Suntour FD's unless that's what you want). Triple ring FD has a longer range of motion and, sometimes a different arm geometry and, you would need to adjust the limit screws to prevent shifting the chain completely off the rings.
Thanks. I do know mine is 28.6 mm. "high normal" means reverse?
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Old 03-28-20, 09:54 AM
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FD5600 will tell the tale for its original application. That is its series number.
Cut to the chase, 2006 model "year"
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Old 03-28-20, 11:44 AM
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Date code GD indicates either 1982 or 2008, and just looking at it, it's not a 1982. So indeed, it's a 2008, not even close to "vintage".
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Old 03-28-20, 12:31 PM
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Originally Posted by ts99
Maybe dumb question, but I'm looking for a replacement front derailleur for my 1977 bike, i.e., 10 speed is 2x5.

Saw this "vintage" 105 that says "10 speed". 10 speed cassettes didn't come out until the 2000s, which I wouldn't consider vintage. 105 started in the 80s, so it could be from then and they're saying it's from a 2x5. Or does it matter for front derailleurs? Would a 2000s 10 speed front derailleur be too narrow for my 5-6 speed chain?

And while I have you, is a triple ring front derailleur that different from a double ring one?
A 10 speed chain is narrower than one for and older 5-6 speed freewheel, thus the derailleur cages are also narrower. I learned about this when I couldn't get an older derailleur to shift with a newer 10 speed chain, because the cage was too wide. It would just rub the chain without pushing it off the ring. If you put a narrow cage derailleur with a wider chain, you would have to adjust it after every rear shift so the chain doesn't rub the cage.

A lot of derailleurs have enough range to shift three chain rings, but it depends on how big the difference is between the ring sizes. One made to shift a triple will have a longer cage to reach the smallest chain ring.
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Old 03-28-20, 04:45 PM
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Thanks y'all. I took a pass on that one.
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