HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 27 posts ] 
Go to page Previous  1, 2
Author Message
PostPosted: Wed Feb 01, 2012 2:10 pm 
Offline

Joined: Sat Dec 13, 2003 2:25 am
Posts: 4453
Location: Canada
You are speaking of the nominal accuracy. The old Professional and the Si are better that 2%, in reality. The guarantee is for 2% accuracy.

The enhanced accuracy of the Campagnolo PowerMeter is due to the fact that the interface between the PowerMeter chassis and the crankarms and spindle comes straight from the factory. That kind of consistency is not possible with most of the other interfaces. It probably also helps justify the cost of the system...


Top
 Profile  
 
PostPosted: Fri Feb 03, 2012 3:19 am 
Offline
User avatar

Joined: Wed Sep 29, 2010 4:25 pm
Posts: 78
Location: MA
Duds10s:

Did you go with Rotor? If so, how is it? I'm thinking of doing the same for my Seven.

_________________
Ride Strong

https://www.flickr.com/photos/121194764@N07/sets/


Top
 Profile  
 
Posted: Fri Feb 03, 2012 3:19 am 


Top
  
 
PostPosted: Fri Feb 03, 2012 12:15 pm 
Offline

Joined: Sat Aug 08, 2009 12:17 pm
Posts: 353
Location: Melbourne,Australia
jrobart wrote:
Duds10s:

Did you go with Rotor? If so, how is it? I'm thinking of doing the same for my Seven.


Undecided yet, would love the campy SRM but just can't justify the extra dollars to myself.

Seems the rotor quarq will work however when asking Quarq, LBS that do heaps of these or even overseas dealers no one seems to have same opinion on what other Quarq options will work with 11speed campy

One option been given is the SRAM Quarq with GPX will work even with the SRAM 10 speed rings, problem is i hate SRAM and will find it hard to mix that with campy drivetrain on a C59

_________________
Gloss Black Special Order Colnago C59 with SR and Mavic Cosmic Carbone SLR
Giant TCR Advanced SL Rabobank
Go Cadel


Top
 Profile  
 
PostPosted: Fri Feb 03, 2012 1:07 pm 
Offline
User avatar

Joined: Wed Sep 29, 2010 4:25 pm
Posts: 78
Location: MA
SRAM will work with Campy 11 (I use a SRAM XO Mtb crank to gear down for the Mt. Washington Hillclimb), but you are absolutely correct that it ruins the looks of a campy equiped bike. As my former brother in law was fond of saying about Mercedes, "you pay for the privelege of having that pointed star on your hood." I guess it's the same with paying for the privelege of riding the only true gruppo in the world! :D

_________________
Ride Strong

https://www.flickr.com/photos/121194764@N07/sets/


Top
 Profile  
 
PostPosted: Sat Feb 04, 2012 7:07 am 
Offline

Joined: Sun Sep 18, 2011 9:46 am
Posts: 14
duz10s wrote:
jrobart wrote:
Duds10s:

Did you go with Rotor? If so, how is it? I'm thinking of doing the same for my Seven.


Undecided yet, would love the campy SRM but just can't justify the extra dollars to myself.

Seems the rotor quarq will work however when asking Quarq, LBS that do heaps of these or even overseas dealers no one seems to have same opinion on what other Quarq options will work with 11speed campy



Hi Duz10s, do you have an Australian $ price and weight comparison between the Campy and Rotor SRM? I like the Campy version since it will be just slot in but add the extra 200g over my Ti crank spindle is still a tough decision.

Thanks.


Top
 Profile  
 
PostPosted: Sat Feb 04, 2012 1:38 pm 
Offline

Joined: Tue Mar 22, 2011 11:14 pm
Posts: 27
how about a pedal based system, ie the garmin vector, which should be on the market next month? avoids worrying about what kind and chainset and wheels you have or the cost of a campag srm. may not exactly be a "tried and tested" system at this stage but my impression is that garmin do things properly.

_________________
cyclingpowerlab.com - performance modelling for cyclists & triathletes


Top
 Profile  
 
PostPosted: Sun Feb 05, 2012 5:38 am 
Offline

Joined: Sat Aug 08, 2009 12:17 pm
Posts: 353
Location: Melbourne,Australia
Yes have looked at garmin pedal option but I hear they are having many problems with it and being the first run of this technology I'm very hesitate to buy it

Trying to get Aussie prices from local dealer but they don't seem to like to reply, can buy from UK for around $4500 oz dollars

_________________
Gloss Black Special Order Colnago C59 with SR and Mavic Cosmic Carbone SLR
Giant TCR Advanced SL Rabobank
Go Cadel


Top
 Profile  
 
PostPosted: Mon Apr 08, 2013 2:34 pm 
Offline

Joined: Thu Jan 26, 2012 9:45 pm
Posts: 111
Location: New Forest - UK
hi,

my brother is looking to add a powermeter to his bike.

the bike is a 2012 cinelli pro best of' (press fit bb cups).

he doesn't want a wheel-based system as he switches between a pair of Zipp 404's and some Stans 340 / DT 180s climbing wheels.

he's not convinced about pedal-based systems and isn't prepared to wait for cleat-based systems to come on stream.

what would be the best option for crank-based powermeter and how would he set this up in terms of chainrings etc (to be 11-speed campag compatible).

he's not short of cash, but i don't think he wants to spend millions at this juncture.

cheers

_________________
viewtopic.php?f=10&t=109022
viewtopic.php?f=10&t=109000
viewtopic.php?f=10&t=105626


Top
 Profile  
 
PostPosted: Mon Apr 08, 2013 2:38 pm 
Offline
User avatar

Joined: Thu Dec 22, 2011 12:37 am
Posts: 414
best campy srm, then any other srm that works with your bb, then a new quarq with omnicalc (to remove the apparent drift problems), then an older quarq, then power2max, and finally the new stage powermeter. Pick the highest one thats price doesnt make you dizzy. Basically anything 24mm spindled will work with that bike and he will be able to match some ring to whatever crank he gets that will shift well.

_________________
650b Ritchey
Colnago Mapei
S-Works Tarmac


Top
 Profile  
 
PostPosted: Tue Apr 09, 2013 6:49 pm 
Offline

Joined: Wed Aug 31, 2011 2:36 am
Posts: 139
I have been doing similar research, and here is what I've found for crank-based power meters:

SRM Power Meter
The Campagnolo Standard/Compact SRM is $3995 retail without PowerControl unit. This would be my choice if A) I had that kind of cash and B) I was 100% certain that I would be using Campy for a long, long time and C) my cranks had to say "Campagnolo". FYI, there is a guy with a used 175mm, 53/39 Campagnolo SRM on eBay for $2500. If "A" above is applicable, but "B" and "C" aren't and you want arguably the "best" crank-based power meter option, then you could do any number of other cranks from SRM. My first choice would probably be the Cannondale Hollowgram (I'm pretty sure the Best Of has a BB30 shell) and the Rotor 3D+ next, paired with Praxis chainrings (they are Campy 11-speed compatible). You could also do Stronglight CT-2 chainrings, which may be lighter, but I believe the shifting to be better on the Praxis rings.

Quarq Power Meter
Your brother could buy the Quarq for Cannondale power meter. $1795 for just the power measuring spider or $2795 for the spider, SL crank arms and Quarq chainrings, which may or may not work well with Campy 11-speed. Or he could do the Quarq Elsa for around $2000 or Quarq Riken for around $1600. Again, the chainrings are Quarq TSM and may not work optimally with Campy 11-speed. Both the Elsa/Riken come in BB30-specific versions as well as versions that are adaptable to multiple BB standards. If I were to choose the Quarq option with that frame, I'd go with the Cannondale Hollowgram spider-only option, then source the cranks and chainrings separately.

Rotor Power Meter (http://www.rotorbikeusa.com/products/power_cranks.html)
New to the market. Doesn't include chainrings, but would be the less expensive Rotor option versus the comparable SRM version. Includes individual left & right power measurements, which the SRM and Quarq do not.

Power2Max Power Meter (http://www.power2max.ca/)
The least expensive option of all the spider crank-based power meters. He could do the Rotor 3D+ cranks and power meter for just under $1500, and would just need the proper chainrings. Or he could do the carbon Lightning cranks for just under $1600.

Stages Cycling Power Meter (http://www.stagescycling.com/stagespower-models)
This option is technically crank-based, but mounts on one crank arm rather than attaching to the chainrings. There are versions for Cannondale Hollowgram cranks that range from $800 for the SI, to $950 for the SI SL to $TBD for the SI SL2. All three versions include the power meter and a new left crank arm that would need to be paired with an existing right crank arm. This is the least expensive way into a crank-based system assuming that he's OK with this different way of measuring power at the cranks. He might want to read this review (http://www.dcrainmaker.com/2013/01/stag ... eview.html).

_________________
Time VXRS Ulteam (7.16 kg)
viewtopic.php?f=10&t=120268


Top
 Profile  
 
PostPosted: Tue Apr 09, 2013 9:57 pm 
Offline
Moderator
User avatar

Joined: Sat Mar 14, 2009 6:08 am
Posts: 7285
Location: Geeeelong!
...

_________________
http://www.nicksquillari.com.au Forum Jedi


Top
 Profile  
 
PostPosted: Wed Apr 10, 2013 1:53 pm 
Offline

Joined: Sat May 09, 2009 1:52 pm
Posts: 373
Location: England, UK
To my mind using a PM is the biggest weakness of running a Campagnolo groupset.

I've just switched to a Power2Max from using a Powertap on my Campagnolo equipped bike. Using a Rotor 3D+ crankset. I'm impressed so far, just using regular rotor No-Q chainrings with SR11. Got to say that Rotor have got a good design there, practically fits any kind of frame, pretty good weight and works well. So far only a couple of hundred miles but the Power2Max just works well, no fuss at all. Good numbers with no weird spikes or drops.

Maybe Campagnolo should either work more closely with PM designers or use less proprietary design for their crank designs. Unless Pedal/Shoe based designs finally come out (and do actually work reliably) their crank sales are just going to keep doing down as people move away from them.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 27 posts ] 
Go to page Previous  1, 2


Who is online

Users browsing this forum: Bing [Bot], dunbar42, wrenegade, Yahoo [Bot] and 42 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Campagnolo Power Meter Choice (Vector or Stages with SISL2)

in Road

9x12man

12

1073

Thu Feb 27, 2014 3:24 pm

9x12man View the latest post

There are no new unread posts for this topic. Can I put a Quarq power meter on my bike

in Road

jspaceman

6

563

Tue Dec 31, 2013 7:50 pm

eric View the latest post

There are no new unread posts for this topic. Power meter issues + MTB power meter on a roadbike

in Road

AlexJ

3

559

Tue Nov 12, 2013 2:09 pm

Geoff View the latest post

There are no new unread posts for this topic. New group set, new power meter?

in Road

naylor343

5

943

Wed Jul 16, 2014 9:57 pm

dunbar42 View the latest post

There are no new unread posts for this topic. SRM power meter question

in Road

Iamspecialized

2

232

Tue Jul 29, 2014 9:28 pm

Danza View the latest post


It is currently Wed Sep 03, 2014 7:12 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB