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WTB Simplex Front Derailleur

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WTB Simplex Front Derailleur

Old 06-30-20, 07:20 AM
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Michael Angelo 
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WTB Simplex Front Derailleur

WTB Simplex SLJ Front derailleur like this.




Last edited by Michael Angelo; 06-30-20 at 07:24 AM.
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Old 06-30-20, 07:31 PM
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Front pull SLJ FD....
I used to see these at eBay regularly as it is not as popular as the back pull version.
Make sure your frame has the proper cable casing stop on the down tube, near the BB, as this will not work with frames that have the FD cable, running under the BB.
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Old 07-03-20, 01:57 AM
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A little bit rear on ebay at these days..
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Old 07-03-20, 04:40 AM
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Originally Posted by Michael Angelo View Post
WTB Simplex SLJ Front derailleur like this.
These front mechs have a design flaw. The cable-attachment section of the arm is too small. With time, and repeated use the eye will crack.

I have such a one.
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Old 07-03-20, 06:02 AM
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SLJ FDs

Originally Posted by Michael Angelo View Post
WTB Simplex SLJ Front derailleur like this.

The FD pictured is a 1st generation Super LJ AV236 introduced in 1973. Simplex produced a multitude of different front derailleurs, especially from the early 70's until the end of the trail.

Originally Posted by Chombi1 View Post
Front pull SLJ FD....
I used to see these at eBay regularly as it is not as popular as the back pull version.
Make sure your frame has the proper cable casing stop on the down tube, near the BB, as this will not work with frames that have the FD cable, running under the BB.
As Chombi1 mentioned, to use the front pull style FD you need either a braze on cable housing stop on the down tube or a clamp on cable guide like these.



Front lever style from the early 80's.






Rear lever style from the early 80's. Notice the CPSC lip at the front of the cage.





Originally Posted by oneclick View Post
These front mechs have a design flaw. The cable-attachment section of the arm is too small. With time, and repeated use the eye will crack.
I have such a one.
Like this...


One suggestion, the later all or mostly all steel Simplex lower priced FDs while not as attractive, are more robust.

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Old 07-03-20, 02:27 PM
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Is this one close enough?




I;m not sure that I have the locknut for it. I have no use for it, its yours if you want it for the price of shipping.
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