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Old 11-07-09, 01:54 AM   #1
abarth
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Plastic Simplex F Deraileur Advice Needed

Between the AV-223 Prestige Criterium and the LJA200 Criterium, which one break easier? Thanks
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Old 11-07-09, 06:36 AM   #2
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I think any of them that have the Delrin clamp around the front of the seat tube break just about as easy - at least that clamp does. There was an aluminum one, too.
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Old 11-07-09, 09:52 AM   #3
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My simplex prestige broke by just looking at it. It was 35+ years old and barely used.
If I was riding it would have gotten all wrapped up and thrashed the chainring.

Get one made of metal.
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Old 11-07-09, 06:31 PM   #4
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I have never met a Simplex front derailleur I would recommend to anyone.
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Old 11-07-09, 06:40 PM   #5
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I have never met a Simplex front derailleur I would recommend to anyone.
I have.

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Old 11-07-09, 06:44 PM   #6
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Excellent taste in tires, sir!
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Old 11-07-09, 07:11 PM   #7
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Plastic + Simplex = Junk.
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Old 11-07-09, 07:23 PM   #8
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If your bike now has a Simplex Prestige, your bike is set up for a front derailer with a built in housing stop and you have very few choices. There are workarounds, but I don't find any of them satisfactory.
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Old 11-07-09, 10:03 PM   #9
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If your bike now has a Simplex Prestige, your bike is set up for a front derailer with a built in housing stop and you have very few choices. There are workarounds, but I don't find any of them satisfactory.
Try a Sun Tour Compe V. It's what we used back in the day when the OEM Simplex FD broke.
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Old 11-08-09, 09:53 AM   #10
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With a Simplex, its important to tighten the mounting screws until the plastic snaps, then replace with something made of metal. The only sure fix.
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Old 11-08-09, 05:26 PM   #11
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Sorry, but I hated Simplex anything even when they were brand new. Nighmares to work on for repairs. I would much rather use a low end SunTour of Shimano , rather than anything Simplex. Simplex reminds me too much of British Lucas electrical systems.
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Old 11-09-09, 05:58 AM   #12
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Which one will break is not always a function of the design, but of useage, age and particularly environmantal exposure. In this case we're talking a parallelogram LJA200 versus a piston AV-223. I'd be taking my chances with former, due to it's far superior shifting. If it breaks, it breaks.

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Old 11-09-09, 07:14 AM   #13
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Simplex made some excellent stuff in the '80s.


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Old 11-09-09, 12:30 PM   #14
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Which one will break is not always a function of the design, but of useage, age and particularly environmantal exposure. In this case we're talking a parallelogram LJA200 versus a piston AV-223. I'd be taking my chances with former, due to it's far superior shifting. If it breaks, it breaks.
I went with the LJA200, can't believe how bad the AV223 shifts until I play with it. I even soaked it in oil, but it improved little.
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