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-   -   manual front derailleur (http://www.bikeforums.net/framebuilders/788687-manual-front-derailleur.html)

roashru 12-26-11 04:01 AM

manual front derailleur
 
hello everyone, i have an old hi-ten bicycle i think would be better with a manual front derailleur i know i can brase it its a 110 spindle mountain triple crank road frame any input will help.

roashru 12-26-11 04:07 PM

reach down lever type front derailleur

unterhausen 12-26-11 07:09 PM

not sure what help you want, I only know of one built in recent years, and it was mostly for show. I really doubt you are going to be happy with one on a triple, any pushrod FD has limited range. And they usually stink anyway

rodar y rodar 12-26-11 08:37 PM

I don`t think those have been made commercially for... 40 years? 50? Being that I`ve never had the opportunity to use one, I can only suspect that Unterhausen is right about them not working very well, and probably even less on a triple.
On the other hand, they sure look cool! Do you plan to build one? If you do, please post how you go about it. Personally, I`d love to have one.

roashru 12-30-11 11:13 AM

unterhausen, do you know of any photos of that front derailleur set up?

rodar y rodar, your correct a lever type front derailleur hasnt been done in bicycle racing in way many years.

i have some old photos i would have to dig up if anyone wants to see one. the whole assembly is brazed to the seat tube with a thumb lever on a metal rod the action looks push and pull. what im looking for is more info on these without starting from scratch.

rodar y rodar 12-30-11 03:25 PM

Hone your skills on that one, then you`ll be ready to tackle a rod shifter for the rear.
http://www.google.com/search?q=cambi...og&sa=N&tab=vi

A few years ago, I saw a killer video of a guy shifting Cambiocorsa and Roubaix systems while riding. Very well done and a lot of fun to watch. Now I can`t find it- does anybody have a link for it?

unterhausen 12-30-11 03:49 PM

Quote:

Originally Posted by roashru (Post 13655686)
unterhausen, do you know of any photos of that front derailleur set up?

pdf warning: link

You may be able to find more pictures from NAHBS
You can see more period examples if you search for French bikes on ebay or on flickr


Quote:

Originally Posted by rodar y rodar (Post 13656637)
Hone your skills on that one, then you`ll be ready to tackle a rod shifter for the rear.
http://www.google.com/search?q=cambi...og&sa=N&tab=vi

A few years ago, I saw a killer video of a guy shifting Cambiocorsa and Roubaix systems while riding. Very well done and a lot of fun to watch. Now I can`t find it- does anybody have a link for it?

I have an ambition to make a cambio corsa bike, but the dropouts are hard to find. I have thought about trying to build a broach to make them, but that would be a little tricky

rodar y rodar 12-30-11 04:51 PM

^^Don`t you think they could be just filed in? I think the tough part would be the pinion on the axle.

unterhausen 12-30-11 05:02 PM

there are hubs and other parts out there to be found, the frame parts are not so easy to find. I guess you could lay them out carefully and file them, I'm not that obsessive. Waterjet might work though

rodar y rodar 12-30-11 05:12 PM

Roashru, you might enjoy the pics on this site:
http://www.theracingbicycle.com/Preservation.html
Quote:

Originally Posted by rodar y rodar (Post 13656637)
A few years ago, I saw a killer video of a guy shifting Cambiocorsa and Roubaix systems while riding. Very well done and a lot of fun to watch. Now I can`t find it- does anybody have a link for it?

It seems to be "off the air". I found the rbr post where I had originally gotten that link- it was on wooljersey, which disappeared. No more WJ website, or is it just my computer?

roashru 01-06-12 09:50 PM

nice good input info on lever derailleurs this should be better documented in the bicycling community. i look at it as an option i will worry about the efficiency later.

ftwelder 01-09-12 03:05 AM

I am building a 30's style bike in the near future. I am thinking about using some home-made derailleur system also. 'should be fun!


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