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  1. #1
    LBKA punkncat's Avatar
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    Front derailleur broke-replacement concern

    Predictably, my 4403 broke on the spring tab. I was looking at the modern line of Tiagra/Claris to find a replacement and find that they all have a much shorter cage than the 4403.
    Will the newer 45/4603 FD's work on my Catrike in spite of this difference (relating to tooth differential)?

    Microshift Triple + what adapter = ?

    Anything by SRAM work instead?
    Last edited by punkncat; 07-07-14 at 01:01 PM.
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  2. #2
    Senior Member Retro Grouch's Avatar
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    Everything on a bike (or trike) works together. What are you using for a crankset and for a shifter?
    My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.

  3. #3
    LBKA punkncat's Avatar
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    Sorry Retro, I was of the impresson that mentioning the 4403 front derailleur on my Catrike would answer those concerns well enough. It's a 9sp triple on bar end friction shifters.
    There is a great deal of information searching the subject, but no good solutions aside from "get used to crappy shifting" with a modern replacement.....
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  4. #4
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    Sometimes you can find new-old-stock (NOS) on ebay. The one you are looking for shows up for sale in Taiwan so the shipping time is about 30 days but the price is decent. See:
    eBay item number: 191213209392

    Not a great time of year to be out of commission but it you really like they way the original worked, put on a really cheap one or used one until the good one comes in.

  5. #5
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by punkncat View Post
    Sorry Retro, I was of the impresson that mentioning the 4403 front derailleur on my Catrike would answer those concerns well enough. It's a 9sp triple on bar end friction shifters.
    There is a great deal of information searching the subject, but no good solutions aside from "get used to crappy shifting" with a modern replacement.....
    You still didn't say what chainrings you are using.

    Honestly, I think "get used to crappy shifting" is a cop out.

    Friction shifting will overcome a host of other issues.
    If your biggest chainring has more than 48 teeth, I'd get a road triple front derailleur.
    If your biggest chainring has fewer than 48 teeth, I'd get a mountain bike front derailleur.
    If you're worried about the chain rubbing the bottom of the cage when your in the little/little combination, don't.
    My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.

  6. #6
    LBKA punkncat's Avatar
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    Found a solution through Microshift, i think.
    Last edited by punkncat; 07-08-14 at 09:45 PM.
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  7. #7
    LBKA punkncat's Avatar
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    Well, the Microshift solution doesn't pan out because they are backordered till Sept. I figure my next easiest, expedient solution is going to be dropping to a 50T top ring and going with the modern replacement.
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  8. #8
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by punkncat View Post
    Well, the Microshift solution doesn't pan out because they are backordered till Sept. I figure my next easiest, expedient solution is going to be dropping to a 50T top ring and going with the modern replacement.
    Help me out. What's the problem with using a road bike front derailleur?
    My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.

  9. #9
    LBKA punkncat's Avatar
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    The issue is that all the new/replacement FD are either 10sp, or designed for a 20T capacity. The Catrike has a 52T top ring (not a 50) and the differential to the low gear is 22T. Any new derailleur that I get will either not shift right because it can't hold all the chain, and because the "curve" of the cage isn't right, or it will be too narrow and rub more cross chaining.
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  10. #10
    Senior Member delcrossv's Avatar
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    Just get a second hand derailleur off the 'bay. In any event that's the first i've heard of the FD cage being sized for narrow chain such that 9 speed chain won't fit.
    Lightning P-38 / M5 M-Racer/Ryan Vanguard

  11. #11
    Senior Member Retro Grouch's Avatar
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    I think that you're worrying too much.

    If you were using brifters or some other kind of indexed front shifter, the derailleur cage width might become a problem. You not only aren't using an index shifter but your front derailleur is also where you can see it and dial in your trim perfectly.

    I wouldn't worry too much about the maximum tooth differential either. Who ever uses the small end of their cassette with their granny chainring?

    One other possibillity:
    I have a black, Sun Tour Cyclone front derailleur. It even has it's own cable stop on the casting. It would work well paired with your bar end shifter. If you're interested, think about what you have that you think would be an even trade.
    My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.

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