Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-02-12, 10:10 AM   #1
Andy Antipas
Member
Thread Starter
 
Join Date: Sep 2011
Location: Durango, CO
Bikes: Peugeot Pro-10, Vitus Carbone 7, Motobecane Grand Touring,Gitane Team Pro, Eddy Merckx Century, Serotta CO II
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
repair retrofriction shifters?

Is it possible to repair simplex retrofriction shifters? I have several pairs of these and love them. However, I have a left shifter that isn't working as it should. I have heard that the internal spring breaks sometimes? Any suggestions? Thank you in advance!
Andy Antipas is offline   Reply With Quote
Old 01-02-12, 11:29 AM   #2
randyjawa 
Senior Member
 
randyjawa's Avatar
 
Join Date: Apr 2007
Location: Thunder Bay, Ontario, Canada - burrrrr!
Bikes: 1982 Tomassini, 1963 Peugeot PX10, and eight special issue Canadian lightweights...
Posts: 7,132
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
I am not even sure what a Simplex retrofriction shifter is. Perhaps a picture for those of us who are less informed.
__________________
Learn how to find, restore and maintain vintage road bicycles at... MY "TEN SPEEDS"
randyjawa is offline   Reply With Quote
Old 01-02-12, 12:07 PM   #3
ColonelJLloyd 
Senior Member
 
ColonelJLloyd's Avatar
 
Join Date: Dec 2009
Location: Louisville
Bikes:
Posts: 8,211
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
This is the later version.



Andy, what do you mean by "not working as it should"? Is it just not holding properly? Check to make sure all of the parts are present.

__________________
Bikes on Flickr
I prefer email to private messages. You can contact me at justinhughes@me.com
ColonelJLloyd is offline   Reply With Quote
Old 01-02-12, 12:46 PM   #4
unworthy1
Stop reading my posts!
 
unworthy1's Avatar
 
Join Date: Sep 2004
Bikes:
Posts: 9,195
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
I'd also start with a thorough cleaning, as I've heard that dirt is often the culprit in these not "working right". I've never had mine go bad so never had to replace a spring, but as long as you can locate a replacement (good luck) or somebody could wind you one to match the old, no reason why it can't be replaced.
unworthy1 is offline   Reply With Quote
Old 01-02-12, 03:20 PM   #5
Grand Bois
Senior Member
 
Grand Bois's Avatar
 
Join Date: Mar 2005
Location: Pinole, CA, USA
Bikes:
Posts: 16,553
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 25 Post(s)
The springs are unobtainium. It shouldn't be difficult to figure out if that is the problem. You may have to buy another shifter to get the part if it is broken. Somebody posted here once that he has broken a bunch of them, but I found that hard to believe. I have one spare, but you'd have to pry it from my cold, dead hand.
Grand Bois is online now   Reply With Quote
Old 01-02-12, 04:07 PM   #6
Andy Antipas
Member
Thread Starter
 
Join Date: Sep 2011
Location: Durango, CO
Bikes: Peugeot Pro-10, Vitus Carbone 7, Motobecane Grand Touring,Gitane Team Pro, Eddy Merckx Century, Serotta CO II
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
retrofiction shifters

I haven't tried to remove the spring yet, but all the other parts are there, and it is nice and clean. I'm using the model that fits to the campy shifter braze-on boss. I will dig deeper and see what I can find. Basically, there is no spring assist on the left lever one feels with retrofriction shifters. Thank you for the photos and guidance.

It is hard to describe the advantage of retrofriction shifters. With most friction shifters the effort it takes to pull or push the shifter is related to the tightness of the adjustment screw. On retrofriction shifters there is a spring inside the shifter that allows less "tension" on the adjustment screw lowering one's efforts on the downshift (rear derrailleur) making for smoother shifting with less trimming, but offers increased resistance on the upshift. For the front der. pulling back to shift to the big ring is easier than pushing it forward to the small ring. The shift levers counter balance the springs in the derrailleurs to some degree. Retrofriction shifters also reduce or eliminate the amount of autoshifting that occurs on some bikes. I have been using them for a long time (25+ years) and recommend them.
Andy Antipas is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 12:01 PM.