 |  | | | |  | |  |  | 1970s Tour de France Replacement Derraileur |  | |  |  | |
 Posted: Wed Feb 08, 2012 5:32 am |
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| natprice |
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| Joined: 16 Oct 2007 |
| Posts: 35 |
| Location: Gainesville, FL |
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My original front derraileur broke a while back. Can anybody recommend a good replacement? I think I could probably find the same Simplex derraileur on eBay but thought I might upgrade if anybody has a good recommendation.
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| Posted: Wed Feb 08, 2012 6:22 am |
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| scozim |
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| Joined: 26 Sep 2008 |
| Posts: 629 |
| Location: Ellensburg, WA |
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| What was the derailleur that broke? |
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| Posted: Wed Feb 08, 2012 6:39 am |
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| natprice |
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| Joined: 16 Oct 2007 |
| Posts: 35 |
| Location: Gainesville, FL |
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| I don't have it here in front of me but I believe it was a Simplex Prestige |
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| | | | | | | | | Simplex Prestige Front Derailleur | | | | | |
| Posted: Wed Feb 08, 2012 10:59 am |
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| verktyg |
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| Joined: 14 Jan 2007 |
| Posts: 2814 |
| Location: SF Bay Area |
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The Simplex Prestige Delrin plastic derailleur was a cheap copy of an earlier all metal push rod front derailleur that may have worked OK in the late 50s , early 60s.
Campagnolo used that design on all metal Gran Sport derailleurs up into the early 70s.
They were an old fashioned design that sometimes worked OK when properly adjusted and well lubed.
By the mid 70s Simplex started making more standard parallelogram derailleurs based on the premium quality Super LJ.
Only 1 BIG problem, they continued to use the clamp portion that sits behind the seat tube made of Delrin plastic.
The Problem with the Delrin is that it tends to dry out and crack easily especially on a 35+ year old part.
Here's some of the early parallelogram front derailleurs. These 2 have the Delrin mechanism behind the seat tube. Pictures DLd from verlobase.com
Again, these 2 later model derailleurs had the plastic clamping mechanism behind the seat post. Pictures DLd from verlobase.com
All of these dérailleurs are OK if the plastic is in good condition with no cracks and not dried out.
Simplex started making some less expensive all metal front derailleurs. This is a model SJA102. Picture from velobase.com
Most of the later derailleurs were made with the control lever either in the front of the set tube or behind it.
Google is your friend, so is eBay. I saved you some work. Here's some Simplex front derailleurs on eBay. No relation to the sellers, yada, yada, yada... 
http://tinyurl.com/7sq7drx
http://tinyurl.com/7mp2y5e
http://tinyurl.com/7btff8n
http://tinyurl.com/7wl5a7q
http://tinyurl.com/6wye878
http://tinyurl.com/7tu45xy
One other thing Huret front derailleurs shift pretty well and are readily available on eBay for reasonable prices. Stay away form the flimsy Juret Jubilee derailleurs.
Feel free to ask any questions... |
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Chas.
SF Bay Area, CA USA
==============
1984 Criterium
1969 TdF
1971 TdF
1974 TdF
1984 TdF x 2 Bikes
1970 SC
1971 SC
1972 SC
1984 SC
1984 Team Pro
1985 Professional
1990s Team Replica |
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| Posted: Wed Feb 08, 2012 12:49 pm |
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| scozim |
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| Joined: 26 Sep 2008 |
| Posts: 629 |
| Location: Ellensburg, WA |
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| I concur the SJA102 is a really nice front derailleur. I'm also using a Sachs Huret one that shifts quite nicely. |
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| Posted: Fri Feb 10, 2012 2:33 pm |
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| sandranian |
| Site Admin |
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| Joined: 27 Feb 2006 |
| Posts: 2701 |
| Location: Southern California |
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