I planned to pick up a new tri bike for 2010 but I’ve had some other expenses so that plan is off. Instead I’m going to invest in a new power meter and clean up the air flow up front a bit. Are there other aero brake options aside from the Oval?
this is the new hot stuff:
http://www.simkinsdesigns.com/Egg_aero.htm
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Was just doing some reading on those. Too bad it doesn’t have a center-pull.
Do you need center pull for a reason. I only ask because the person that did the testing for Simkins had a center pull set up and switched to Simkin’s because it was more aero. Just something to think about if you do not have to have Simkin’s
Do you need center pull for a reason. I only ask because the person that did the testing for Simkins had a center pull set up and switched to Simkin’s because it was more aero. Just something to think about if you do not have to have Simkin’s
Well…actually, I stuck with the modified Tektro (to centerpull) brake on the P2K since it was basically tied with the Egg brake aerodynamically (according to my testing)…until I sold the P2K (along with the brake).
My new frame is a Transition, which is by default a centerpull (no other choices).
The Egg brake went onto my road bike 
and what was the difference in watts at 25mph from a normal brake to your centerpull oval/egg brake? I would like a brake with more power than the hooker that i use from time to time… that hooker dosnt do much braking for me.
yup, I scored hooker brakes in on a recent trip. I installed them but in all honesty, I didnt like how little stopping power they have. I got a buddy who wants to buy them, im thinking of taking him up.
In the next couple weeks, I will have for sale a McMahon (rear that could be modified to front), Front Modolo kronos (with a spare for parts), Front trp T925 (red), and a front Dura Ace Adams (the center pull DA if you dont know what this is). Ill be listing them in the classified section soon, but I could give you the jump on one of these if you are interested.
Stephen J
My new frame is a Transition
Congratulations!
Looking forward to your aero testing results compared to the P2k and P3C - just be sure to wear a blindfold and hold your head exactly the same as before.
and what was the difference in watts at 25mph from a normal brake to your centerpull oval/egg brake? I would like a brake with more power than the hooker that i use from time to time… that hooker dosnt do much braking for me.
Apparently ~3W as compared to a Cervelo Mach2 dual pivot. Matt wrote up the analysis of the results and Robert Chung has graciously hosted the .pdf here:
I’ve found the “stopping power” of the brake to be more than adequate, and I haven’t even switched the pads to my preferred KoolStops…then again, I also find single-pivot Cane Creek 200SLs (with KoolStop salmon pads) to be “adequate” as well YMMV.
Look up “Simkins brake” on ebay and you’ll find the brakes.
Nothing that requires me to have a center-pull but it seems that it would be more aero if you can get rid of the cable housing and/or noodle guide for a side pull. Ideally there would be no cable housing associated with a center pull, just the raw cable extending from the stem to brake.
Do you need center pull for a reason. I only ask because the person that did the testing for Simkins had a center pull set up and switched to Simkin’s because it was more aero. Just something to think about if you do not have to have Simkin’s
I’d bet in 5 years there will be a fork (like the Trek) that includes the brake in the crown for aftermarket.
My new frame is a Transition
Congratulations!
Looking forward to your aero testing results compared to the P2k and P3C - just be sure to wear a blindfold and hold your head exactly the same as before.
Yeah…the combination of team discount and left over '09 framesets sort of made it a “no-brainer” on the upgrade
I definitely plan to test it out…BUT, I can’t do a “head to head” with the P2K anymore since it’s been sold. I could borrow the P3C again, but it’s bars are different than what I’ll be running on the Transition (I kept the Scott 100Ks).
No matter, I feel I have a good idea of what my CdA was on the P2K ultimately, and I plan on just comparing to that.
I have an Oval 700 that I never installed. I’m considering converting it to center-pull and using that. I’m not specifically familiar with the DA Adams and Modolo. Do you have pics? I’m interested in options.
In the next couple weeks, I will have for sale a McMahon (rear that could be modified to front), Front Modolo kronos (with a spare for parts), Front trp T925 (red), and a front Dura Ace Adams (the center pull DA if you dont know what this is). Ill be listing them in the classified section soon, but I could give you the jump on one of these if you are interested.
Stephen J
I’m not specifically familiar with the DA Adams
Neither am I.
Shimano was the first to really push for aerodynamically-designed cycling components, introducing an entire Dura-Ace AX group in the early 1980s. This group included brakes that were activated by the upward movement of a centrally-located cable clamp that pushed the tops of the two arms outwards, and hence the brake pads inward. However, unlike, e.g., the later Hooker brake, the cable housing ran all the way to an integrated cable housing stop just above the clamp described above, and the “guts” of the brake were largely exposed. I therefore suspect that it is somewhat less aero than the Hooker, but I’ve never seen any data.
As is Shimano’s practice, the innovations found in the AX group filtered down to less expensive lines in following years, including an Adamos group found on department store bicycles. It is apparently this brake that stephenj has to sell. Compared to an AX, the original finish probably wasn’t as nice, but again as is true for many Shimano parts, the actual function is likely to be quite similar (especially in the case of a brake, where there aren’t many places where you can save significant money or - going the other way, weight - by substituting different materials).
Shimano AdamAs
I say tomatO, you say tomatA.
Thanks for the reminder/correction, and for digging up the link.
No problem.
I have a set of the Adamas and they are not as cool looking as the Dura Ace AX or 600AX.
They are the 105 of the 80’s Shimano centerpulls. Heavier, little clunkier IMO
Quick Google for Dura Ace Adamos came up empty. Interested to see a pic.