infamousfaith

Hi there I'm new to this forum, and was hoping you guys could offer me some advice on what to do with this issue I have. I own a Dahon V folding bicycle, seems to be built around the early 90's, in like new condition. But just as it's been kept in storage for 20+ years, it's also been without maintenance. Everything is stock on the bike, and nothing's been modified. Now the issue, whenever I brake with the rear brake it makes a squealing, squeaky, sound. Like an old big rig with worn out brakes. I took a look at it, and it seems to be a rollerbrake similar to a Shimano IM41, but a chinese knockoff variant, and the model states "Silent Primary 80 super brake no.11904." The brake lever's also a chinese brand I don't recognize called "Lee Chi," I'll post some pics I took so you can get a look at it. But that's my problem don't know how to make the squeaking stop, I read your suppost to regrease rollerbrakes every so often through a hole they have, but I didn't see anything that would take a nozzle on there. I just don't wanna be left without rear brakes one day while commuting around town. Thanks for any help you guys can offer.

infamousfaith

Ah sorry it's not letting me upload photo's until I have atleast 10 points, so we'll have to do without photo's for now.

rhenning

If it is a 20 year old bike the first thing you should do is replace the brake pads. Rubber hardens with age and hard rubber makes noise and doesn't work well. If you can get them Kool Stop makes good pads. Roger

Andrew R Stewart 

First thing I would try is a take apart, cleaning and reassembly with proper lube. All the roller brakes (and clutches) like good grease, after a couple of decades that factory lube will be pretty dry. Andy .

infamousfaith

Okay thanks for your help. Actually disregard the post completely it doesn't have hub brakes, it has regular cantilever brakes. They're just mounted awkwardly underneath the wheel rim rather than above haha I just noticed. So I guess the pads are old and dry it should be an easy fix.
Thank you everyone for all your help, have a nice day.

Wilfred Laurier

Lee Chi is a major manufacturer of less-expensive bike parts, esp. brakes and levers. BITD we used to joke about getting a bike outfitted with a full Lee Chi gruppo.

Edit:

I Googled Lee Chi and realized that the Promax brand is made by Lee Chi. Promax is still pretty inexpensive stuff, but certainly better than the quality I associate with Lee Chi.

infamousfaith

Haha that's hilarious. Yeah Lee Chi on my bike has been good so far, I'm using their brakes and levers trusting my life with them. I'd say that's a good test.

Andrew R Stewart 

Back in the day we use to joke about getting a Wald groupo. Andy

Wilfred Laurier

Andrew R Stewart Isn't that how Worksman bikes come from the factory?

Clockwerk

Hello I've been looking for what tube to use for the silent primary super brake. I have a vintage dahon da bike with this brake. I would like to know what housing works that goes inside of the pinch bolt in order to activate the brake thank you.