SIMPLEX RD - need help to ID
 

hi
i got a SIMPLEX RD, i'm trying to identify it:
marks on the front of the RD:SX410
marks on the rear : brevet SGDG
marks on side U10b

any one

is it black plastic?
If so, you can recycle it... and I'd highly recommend you do just that
(tongue planted in cheek...sort of)

You've already identified it. It's a Simplex SX 410. The SX series derailers were similar in design to the SLJ series, but the cost and quality was lower. I have an SX 610 on my Gitane:

http://community.webshots.com/photo/...8014369Fxsfoq#

simplex question
 

thanks for the replay.
i hvae 0 experiance with this brand
is it any good ?, i'm using 600 ultegra(1988~), woled this be a more "clasic" on my 86 colnago ?

To be honest, I only have one on my Gitane because I want to keep my French bike French and I haven't been able to find a Simplex SLJ at a price I'm willing to pay. Your Ultegra is a much better derailer. Simplex on a Colnago is just wrong.