I agree, but hydraulic hits every spot of braking performance

True...but, as I told Nick in an email, after my initial lusting after the Maguras has cooled a bit, I'm thinking the best approach for my particular situation may still lie in the use of the Omegas.

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http://bikeblather.blogspot.com/

Damon,

Just ordered my P5 - 6 and was wondering why you are so silent on the issue of getting shift buttons out with the brakes. There must be an engineering reason and I am very curious whether it is still being worked on and have a retrofit later on.

For any others out there who ride tri bikes with Di2. How much do you actually shift from the pursuit bars and would you miss it a lot if you didn't have it.

Carl

Yeah first reaction as well.. Not sure what the reasoning was. It is understandable if they said no since they have invested so much into the Magura project. Sure seemed like shot across the bow there. Nick does have a website, but I don't think it is much of competitor for ST at this point.

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Heath Dotson
HD Coaching:Website |Twitter: 140 Characters or Less|Facebook:Follow us on Facebook

Do you complain when you reach for a water bottle? Shifting from the aerobar is very very easy. You should be shifting the gears before you hit any hills anyways

at the local bike shop several weeks ago we were discussing the p5 and what sizes would be available. most thought the 650 verison would be gone. none of the super bikes build one except cervelo. I have both P3C and a P4 650 verison and was hoping they would be wrong. cervelo did not let the short people down. looking at the p5 geometry looks like I will fit on 51 700 c , because I need a 50 cm top tube center to center. I will have to wait til I get home in the spring to find out which frame I will fit on best. If the launch of the p5 is the same as the P3C and the P4 the small sizes will not be available anytime soon. I waited over a year for both of those bikes

I'm not complaining at all. (Not my style) Like a lot of you I ride many thousands of miles a year shifting from my aerobars. I have never ridden Di2 before though and I was just wondering if the extra set of shifters out on the pursuits get used much when you have them available.

Carl

Ahh, I see. Cleared that right up

Hi Damon,
Like others, I would like to thank you for coming on ST and anwsering all of our questions, it really is much appreciated.

Couple of quick questions for you please.
I have read elsewhere that the difference in drag between the P5-3 and P5-6 is only about 17g. Is that figure correct?
I only ask as Im definitely not a FOP'er so the difference, if that small wouldnt worry me, and I do have to worry about cost.

What sizes will be available at first?

Thanks again.

True...but, as I told Nick in an email, after my initial lusting after the Maguras has cooled a bit, I'm thinking the best approach for my particular situation may still lie in the use of the Omegas.

x2

Hi Damon, all things being equal,mwhich frame size more aero? For me I can fit the 56, 58, 61

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

x3

This is true and we (TorHans) are excited to be working with Cervelo on these accessories for this incredible bike. We are just about done with our top tube storage solution for the P5. This will be shown in a few days. Still making the final tweaks. The integrated-hydration/storage solution for the BB gusset area will be done soon as well. Expect these to be available around the April-May time frame.

More to come...

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Hans Bielat
TorHans LLC Co-Founder, Owner, Chief Innovation Officer
http://www.torhans.com

Didn't he just answer that in the text you quoted? No difference: use the other factors to decide.

Thanks for answering the questions, Damon. Much appreciated.

Looking at the geometry chart I'm a bit confused. Comparing a P3 56 with a P5 54 the P5 has a 11mm shorter headtube (114mm vs. 125mm). However, the stack for the P5 frame is 6mm higher (522mm vs. 516mm). This means the headtube should start 17mm higher, but I thought the forks (which should be determining where the headtube starts) were a pretty standard length (between bikes, that is)? I guess they just aren't?

Also, as Steve Irwin asked earlier and didn't seem to get an answer to, is it possible to add stack with the fork spacers if you start out with no spacers at all? E.g., can you have spacers above the stem with the Aduro bar (doesn't look like it) or will it fit enough of the fork steerer inside its clamp to make it possible to add, say, a 5mm or 10mm spacer underneath it after the fork steerer has been cut to put the bar in the lowest position?

damon,

1. will the adura bar fit my 2011 p4?

2. will the front magura caliper fit my 2011 p4?

3. can the rear magura caliper fit my 2011 p4?

thanks,

andrew

Based on the non-response, and looking at the x-ray aerobar view on the p5simplyfaster site, I'm working on the assumption that it isn't possible to move it up at all, only down by further cutting of the steerer.

So I'm contemplating getting the P5-6, but fitting something like a normal stem and Aura Pro bar, keeping the hydraulic brakes and levers, and live with that till I'm 100% certain my position is finalized. The other thing to think about is that because upwards and downwards movement with the Aduro is achieved by moving the whole bar up and down, rather than just the pads/extensions, the brake hose length may need changing when you move the bars. So when messing about with position, it's probably best to choose a bar where you can move within your anticipated optimal range using pad risers rather than moving the whole bar up and down.

I was expecting for the DI2 brake levers!

I have the same questions. The beauty of the Magura is that it will fit in any standard brake mount. So my guess is that the front caliper would work on the P4, or any other bike that uses a standard mount. If it were to work on the rear, it would have to be installed into the 'rocker pivot' post and that seems a little more doubtful. That's unfortunate because not only would it improve braking, but it would also reduce clearance problems with bulge discs that rub against the current brake posts.

MAYBE YOU CAN FIT THE SATELLITE SHIFTER FOR SPRINTERS, BESIDES DE LEVER!

Hi Andrew,

Yes, 17 grams is correct.

Size availability, as is usual with modern molded bikes, is first in the middle of the bell curve with sizes 54 and 56cm, then smaller and larger sizes later.

Thanks for considering Cervelo!

Cheers,

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Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)

Hi heffle,

Thanks for considering Cervelo!

Sorry for the silence, I'm curently here at Brain Bike presenting nearly every hour. In fact I'm on again in just 19 minutes...!

To answer your question, we're not planning to include Di2 shift buttons near the brake levers, since Shimano's plugs actually don't permit it. Of course, if you can solder you can have them! But many riders find they are not used often (though some riders certainly like having them as well).

I would also be curious what other options anyone can think of for Di2 shifting at the brake levers?

Cheers,

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Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)

Hi Eric,

We tested the same arm pad stack with High-V and no spacers, or Lo with some spacers, and found they are essentially aero-interchangeable.

So use your normal considerations when choosing sizes: will you go higher or lower, longer or shorter in the future, etc. etc.

Cheers,

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Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)

Hi MTM,
Just compare stack, not head tube length. Remember BB drop affects head tube length but not frame stack. BB drop is 15mm more (lower BB) on the P5.

Correct, there is no room for spacers above the stem with the Aduro bar - the cables pass over the top of the steerer, so it must not extend. Cutting is permanent, so measure thrice, cut once. ;-)

Cheers,

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Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)

Hi Andrew,

1. No, sorry. The cables don't line up.

2. Yes.

3. No, sorry. The P4 rear brake uses a different mount.

Cheers,

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Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)