TRP Spyre mechanical brake = bee's knees?
I had posted previously about the TRP Spyre mechanical disc brake.
The soon-to-be-introduced TRP Spyre... pushes both pads together.
Originally Posted by Bike Rumor
TRP claims the new Spyre and Spyre SLC cable actuated disc brakes are more than 20mm narrower than Avid's BB7.
Video shows operation of both pads...
Now, more info today at Bike Radar, it includes news of a weight weenie version weighing only 141 grams. The Spyre really looks like an advancement on the venerable Avid BB7.
TRP Spyre road/CX disc brakes - full details
Just prior to the public unveiling here at the Taipei Cycle Show, TRP today released official information on the new Spyre road/cyclocross disc brakes that we previewed a few weeks ago.... TRP says that the cable-actuated Spyre will deliver 20 percent more power, 20mm more ankle clearance, 40g less weight, and more even pad wear than a standard BB7 thanks to its symmetrical dual-piston design.
Claimed weight on the complete standard Spyre is just 239g (front caliper with 160mm rotor and hardware) Ė 61g lighter than the new Avid BB7 SL Ė while the previously unofficial Spyre SLC cuts that down to 141g thanks to a molded carbon fiber arm.
The top-end TRP Spyre SLC incorporates a molded carbon fiber cable arm that brings the claimed caliper weight down to 146g.
Disc brake caliiper placement
PK - are you running Avid BB7 on all 3 bikes?
Originally Posted by PMK
I had not really thought of placement of the caliper until now. My perception has been that the brakes are most affected by the type of brakes and had not contemplated the placement of the caliper. I will say that I am unimpressed with the BB7. Possibly it has not been set up well, but I just have never thought that the BB7 brake was all that. Here's my points of reference.
* DaVinci Global Venture 26" wheels with Avid BB7 rear brake mounted to the chainstay. Seemed like ideal placement and was out of the way for racks/panniers. This seemed to work fine, but I had no point of reference.
* Calfee Dragonfly 700c wheels with Avid BB7 mounted off the back as noted here in this thread. Placement may have not been ideal, but I did not notice a difference in the braking between the Calfee and the DaVinci. They both seemed adequate.
* Ventana ECDM - 26" wheels full suspension MTB with Magura Louise hydraulic brakes mounted off the seat stay as mentioned by PMK. The Hydraulic disc on the tandem was eye opening to me!
* Fandango 29" wheels hard tail MTB with Magura Louise hydraulic brakes mounted off the chain stay. Works great, but I have not noticed much difference bewteen the seat stay and chain stay mounting.
* Ventana 29" wheels full suspension MTB with Magura MT6 hydraulic brakes mounted off the seat stay (again like PMK noted on his Ventana). I do prefer the MT6 brakes to the Louise brakes... but that is another story.
My only point here is that in my mind, the placement of the caliper has been all but irrelevant in my mind (at least until now - maybe I'll become more aware?). What has been most noticeable to me is the stopping power of Hydraulic brakes vs. Mechanical BB7 brakes. Night and day as far as I'm concerned. Now with that said, we've all read about boiling hydraulic brakes and the fact that they may not be suitable for road bikes...
So where does that leave me? I'll be seeking out either the Bengal mechanical brake or the new TRP Spyre mechnical for my next road tandem (which will also be equipped with rim brakes front and rear but with the option of running disc as well).
I am interested to hear other's take on the disc caliper placement and whether it is believed to have a strong influence on stopping power. I am not an engineer, but can only speak to my own real world experiences and observations.