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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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My legs are getting tired
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Re: New Cervelo S5 [Noof] [ In reply to ]
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Not to stand ore walk here alone makes me so patiently to cook another pot of coffee ..

___/\___/\___/\___ the surfboard of the Kurpfalz is the road bike .. oSo >> Older, and faster ..
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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Is the white paper being released today? Also will that include the handle bar wind tunnel tests mentioned a bit earlier in the thread?
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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In short, like the Soloist Carbon this bike is a classic from day one, even with a hidden pocket and mounts for a battery!

___/\___/\___/\___ the surfboard of the Kurpfalz is the road bike .. oSo >> Older, and faster ..
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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Is that 4 watt difference with the new bar on S5 vs. a standard bar on the S3?
Or 4 watts if they had same bars?
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Re: New Cervelo S5 [bootsie_cat] [ In reply to ]
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Hi bootsie,

The S5 is about 4 Watts (at 40km/h) faster than the S3, all else equal. Same bars, too. So the 4 Watts is just the frameset difference.

Cheers,

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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damon_rinard wrote:
Hi bootsie,

The S5 is about 4 Watts (at 40km/h) faster than the S3, all else equal. Same bars, too. So the 4 Watts is just the frameset difference.

Cheers,

Comparative frame stiffness and comfort?
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Re: New Cervelo S5 [JSully] [ In reply to ]
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Hi Sully,

Torsional stiffness is up 35% (measured at the head tube) and BB stiffness is up 6% (measured at the BB).
Comfort is the same. However the new S5 fits up to 700 x 25C tires, so there's potential for more comfort if you want to fit bigger tires.

Cheers,

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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Damon, what's the drop dimension on the new bar? It looks a bit shallow...

http://bikeblather.blogspot.com/
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Re: New Cervelo S5 [Tom A.] [ In reply to ]
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Drop is 128 mm, reach is 80 mm. Overall the drops are very similar to many, many current bars.

(Edited to update the drop to the correct value.)

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)
Last edited by: damon_rinard: Nov 11, 14 7:24
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Re: New Cervelo S5 [damon_rinar [ In reply to ]
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damon_rinard wrote:
From memory, 182mm but I'll check that to be sure. Reach is 80mm. Overall the drops are very similar to many, many current bars.

If that's the case, then you most likely transposed the 2 and 8 and it's probably 128mm (i.e compact drop).

Bummer. I really prefer the standard drop bars (more like 145-150mm), but nobody seems to make an aero road bar with standard drop :-(

http://bikeblather.blogspot.com/
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Re: New Cervelo S5 [damon_rinar [Tom A.] [ In reply to ]
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For a 191cm rider a 128mm drop doesn't bring the nose out of the wind so much, that is what I feel and can see in mirror like windows. So my new position on the hoods will improve ..

___/\___/\___/\___ the surfboard of the Kurpfalz is the road bike .. oSo >> Older, and faster ..
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Re: New Cervelo S5 [damon_rinar [Tom A.] [ In reply to ]
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Hi Tom,


You're right, I incorrectly transposed the 2 and 8. It's 128mm. I'll correct my earlier post.

The goal with this shape is to get normal people back in their drops, hence short drop, loooooong hooks (can be cut shorter), and the same wrist clearance as the 3T round bars.


Cheers,

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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damon_rinard wrote:
Hi Tom,


You're right, I incorrectly transposed the 2 and 8. It's 128mm. I'll correct my earlier post.

The goal with this shape is to get normal people back in their drops, hence short drop, loooooong hooks (can be cut shorter), and the same wrist clearance as the 3T round bars.


Cheers,

I guess you gave up on doing the same by just increasing stack, huh? ;-)

http://bikeblather.blogspot.com/
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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Thanks, will it be possible to mount an SRM powercontrol to the Cerevlo bars?
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Re: New Cervelo S5 [bootsie_cat] [ In reply to ]
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As far as we can tell, no, sorry.

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)
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Re: New Cervelo S5 [bootsie_cat] [ In reply to ]
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bootsie_cat wrote:
Thanks, will it be possible to mount an SRM powercontrol to the Cerevlo bars?

contact your favorite accessory company, I've seen many of them are coming out with aero-road bar mounts



Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter
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Re: New Cervelo S5 [jackmott] [ In reply to ]
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jackmott wrote:
bootsie_cat wrote:
Thanks, will it be possible to mount an SRM powercontrol to the Cerevlo bars?


contact your favorite accessory company, I've seen many of them are coming out with aero-road bar mounts

Why bother? According to this, putting the computer on the stem is actually faster (assuming up-angled stem?) http://www.bikeradar.com/...ched-for-2015-42254/

Oh wait...is it possible to mount a powercontrol to a stem?

http://bikeblather.blogspot.com/
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Re: New Cervelo S5 [Tom A.] [ In reply to ]
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For one, easier to see it out in front of your bars.
For two, a power control would be hard to mount on the stem

Tom A. wrote:
Why bother? According to this, putting the computer on the stem is actually faster (assuming up-angled stem?) http://www.bikeradar.com/...ched-for-2015-42254/

Oh wait...is it possible to mount a powercontrol to a stem?



Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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The goal with this shape is to get normal people back in their drops, hence short drop, loooooong hooks (can be cut shorter), and the same wrist clearance as the 3T round bars.

Damon,

That is a nice change going from the 3T Ergonova to that model of the FSA Compact bars - the bottom part of the drop is very long. Whereas the Ergonova is somewhat truncated. Gives more options for hand positions while in the drops.


Steve Fleck @stevefleck | Blog
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Re: New Cervelo S5 [Fleck] [ In reply to ]
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Hi Fleck,

Good to see you're in tune with what we've done. We studied the ergonomics quite a bit while designing the curve of the drop. As you can imagine, we bench marked a bunch of bars too, including the two you mention, as well as other current popular bars. I think a lot of folks will like this bar's ergonomics.

Cheers,

Damon Rinard
Engineering Manager,
CSG Road Engineering Department
Cannondale & GT Bicycles
(ex-Cervelo, ex-Trek, ex-Velomax, ex-Kestrel)
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Re: New Cervelo S5 [damon_rinard] [ In reply to ]
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Hm, thinking about the aero saving additions in numbers over the last years since the SLC it's about 50 Watt at 25mph but what is the real saving on a new S5 to a standard road bike with standard wheels and handlebar?

___/\___/\___/\___ the surfboard of the Kurpfalz is the road bike .. oSo >> Older, and faster ..
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Re: New Cervelo S5 [sausskross] [ In reply to ]
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sausskross wrote:
Hm, thinking about the aero saving additions in numbers over the last years since the SLC it's about 50 Watt at 25mph but what is the real saving on a new S5 to a standard road bike with standard wheels and handlebar?

same as the old S5. the frame alone as stayed more or less exactly as aero as the old s5 while getting stiffer. So you can refer to the old s5 white paper for an idea of how big the aero advantage is over standard road bikes:

http://www.cervelo.com/...8-7e87cddcd4f6-0.pdf



Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter
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Re: New Cervelo S5 [jackmott] [ In reply to ]
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.. so with HEDs & aero handlebar it would add up to about 53,4. But what will be measured, I guess a wheel set does somehow interact with the frame and can numbers of these both just be added?

___/\___/\___/\___ the surfboard of the Kurpfalz is the road bike .. oSo >> Older, and faster ..
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Re: New Cervelo S5 [sausskross] [ In reply to ]
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sausskross wrote:
.. so with HEDs & aero handlebar it would add up to about 53,4. But what will be measured, I guess a wheel set does somehow interact with the frame and can numbers of these both just be added?

probably not, but won't be too far off.



Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter
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