Re: Upgrading Sidepull Brakes
Originally Posted by bajs-eye
The brakes are shimano 600 and the levers are Shimano STI 105s. I think that the new cables and pads idea sounds worth a go (even though I have spotted a good half price deal on some campag mirage dual pivot callipers)
Whole bike in the dumpster ..... but I like a good project! Anyway just so that we now have the dumpster debate (what am I letting myself in for....)
21" Reynolds 531 frame, mavic open4 rims with shimano 105 hubs, Stronglight chainset (plus cheap and heavy replacement left hand crank!) Shimano 600 front mech, Deore DX rear mech.
and just so you can picture me in your minds I'm a he.
Your STI levers were designed for dual pivot brakes, so they pull less cable than levers designed for single pivot side pulls. This means that the set up will be a little fussier (pads must be set closer to the rims) than if you were using the original Shimano 600 levers. Also, depending on the vintage of the 600 calipers (there is a # on the back "BR-6xxx" that can narrow this down), they may pre-date Shimano SLR, meaning they will have stronger springs in the calipers. Combined with the return springs in your STI levers (part of SLR), this will make the action of the brakes seem a little heavier.
All that said, your 600 calipers are very high quality and some of us even feel that single pivot brakes can have better modulation ("feel") than do dual pivots. And they can be made to work well with your STI levers. Try some sanely priced new pads (e.g., Shimano M50T) and some sanely priced new cable and housing. I think you will get good results.
You found a 531 frame in the dumpster? Lucky guy! What maker? The rest of the components are very decent quality, but if the Stronglight crank has an older, non-standard BCD, you might want to wave good bye to it.