Thanks Ryan,
I'm leaning towards the Tektros since they're easier for me to get, and *don't* need braze-ons or stiff seatstays or cable hangers. If I hate them I can always try the bolt-on Paul Racers, and switch them onto braze-on mounts at some point. The Pacenti crown for the project has mounting points integrated, so the brakes don't need them as well; the rack will be custom - I have tubing for it.
Later,
Stephen
Thanks very much Nick - I think that decides it! :-)
Later,
Stephen
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That's the idea, but I like this one better. (See pic)It's got a larger square platform, but made of similar tubing and attaches the same way.
I've heard speculation that they were made by Sologne, but I don't know for sure.
The IRD B76 seems to be an alternative to the Tektro R556, but with slightly different specs (a few mm longer reach). Does anyone have experience with them?
Steve
It's funny how opinion varies about the Tektro super long reach dp brakes. Some say they're great and others find them weak and flexy. I have a set in the parts bin but can't comment as I haven't used them yet.
Mafac Racers generally don't have the reach or width for a typical 650b conversion. You need an extra 19mm reach from the existing brake setup which is significant.
> The TA rack is a cantilever and does not have any attachment to the fork other than the brake hole
I weigh 260+ and I think the super long reach Tektro brakes stop fine. People say they're flexy... Well I have an 80s gas pipe 27" Nishiki that I use as my around town beater, it has Dia Compe brakes and they literally flex a quarter of an inch when applied, and that is with terrible 80s era pads. If I had Kool Stops on there I might be able to brake hard enough to permanently bend the arms, or snap them off.
Arm flex and lack of power are complaints I heard. I have not heard people talk about uncontrollable squealing.
Hmmm. I know some people don't like the levers to move at all (as with stock Mafac or Universal brake and lever sets), but I find both effort and reach excessive with these.
Short dual pivots (like Dura-Ace 7400/7800) are much better IMO, with plenty of power and decent feel. Cantis are a bit underwhelming by comparison; they do the job, but both feel and power are worse.
My experience with centrepulls has generally been one of excessive sponginess, but this depends on what levers and cable stops are used; a balance between flex and power isn't easy, or so it seems to me. I haven't used any recent high end ones, and 70s/80s were either really spongy if Japanese, or needed super hand strength and reach if European.
It'd be nice to be able to try a few things without having to buy them first, even if just in the shop.(!)
Later,
Stephen
When people say the Tektro brakes are flexy, do they mean flex perceived through the levers (mild sponginess), or are we talking about serious arm flex, with uncontrollable squealing, lack of power, etc?
When did Shimano make a sidepull with longer than 57mm reach? That's what we're talking about here right?
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On 27 Apr 2015 16:35, "Chris Cullum" <cullum...@gmail.com> wrote:
>
>
> On Apr 27, 2015 9:31 AM, "Eric Keller" <kell...@gmail.com> wrote:
> > I think the Tektro long reach brakes are great. I hear the late, lamented Shimano long reach brakes are better, but I got tired of searching for a set. Of course, it would be nice if the QR was better.
> >
> When did Shimano make a sidepull with longer than 57mm reach? That's what we're talking about here right?
^ Never. BTW, I googled out of curiosity and the R650 calipers are on special at wiggle right now; I'll probably order some myself. Wiggle have cheaper ones too, but the price difference is tiny. Not so many places keep 57mm calipers on the shelf, but they've always been available ex Shimano, unless temporarily out of stock. The QR works fine IME, and there's always the adjuster if you want it to open wider. (Or use levers with QR, like Ergopower.)
Later,
Stephen