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 Post subject: Powermeter, for SiSL2
PostPosted: Thu Jun 19, 2014 1:38 pm 
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Joined: Sun Jan 26, 2014 3:44 am
Posts: 379
Hey

So, I thought it might be amusing to get into power metre training, and was wondering what my options were and what the benefits of each one are etc.

I have Cannondale SiSL2 cranks, with a Spidering. The Spidering is getting a bit worn now, so I thought it would be good time to combine getting a new chain ring with adding the large extra cost of a power metre of some sort. I want to keep using my SiSL2 cranks, so it would need to be compatible with that.

I also have a Garmin 810 which would be cool to use to monitor things, if that is at all possible.

Any comments on what my options are, etc., would be very welcome. Cheers!

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PostPosted: Thu Jun 19, 2014 1:43 pm 
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Joined: Wed Jan 09, 2008 3:03 pm
Posts: 127
Location: South Africa
I am running SISL2 cranks with the Stages SISL arm on the left. No problems thus far and I get to keep the good looking Cannondale spider.

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Posted: Thu Jun 19, 2014 1:43 pm 


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PostPosted: Thu Jun 19, 2014 1:58 pm 
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Posts: 379
That was quick! Nice one.

OK, I will look into that for a starter. Do you need to modify your cranks to fit this, or do they remain unscathed?

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PostPosted: Thu Jun 19, 2014 3:21 pm 
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Joined: Mon Apr 11, 2011 6:28 pm
Posts: 221
Location: Palm Coast, Fl.
you would replace the left crank arm with this arm http://www.stagescycling.com/stagespower-models
The q-factor will remain the same it just wont be as light as your SISL2 arm since they only make the SI version for the power meter.
Probably the easiest power meter solution on the market.


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PostPosted: Thu Jun 19, 2014 4:40 pm 
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Joined: Tue Feb 05, 2013 11:53 pm
Posts: 210
If you don't care about running spiderrings, you can also get a power2max Type-S for Cannondale, and some Praxis rings. I believe you will need Cannondale and P2M special tools to remove the spiderrings and install the pm.
Quarq and SRM also have spider-based PM's for Cannondale cranks, both costing more than Stages and P2M.


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PostPosted: Fri Jun 20, 2014 12:07 am 
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Joined: Sun Jan 26, 2014 3:44 am
Posts: 379
Good info thanks.

Not bothered at all about using the Spidering- it wore out fast so trying something else would be cool

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PostPosted: Sun Jun 22, 2014 6:02 pm 
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Joined: Sat Dec 13, 2003 2:25 am
Posts: 4764
Location: Canada
My favorite SRM is the Cannondale-version. It is the lightest and the most-accurate. I am running it on Nibali's old bikes, but lately I have been contemplating finally getting a bike of my own. If I was building-up a bike of my own, I think I would build it around the SRM SiSL crank.


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PostPosted: Sun Jun 22, 2014 6:54 pm 
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Joined: Sun Mar 27, 2011 8:16 pm
Posts: 443
I had the Cannondale SRM on SiSl cranks, drove me nuts with dropouts (I had a PC-7), and given the total lack of support that is a feature of SRM (in the UK) I was glad to see the back of it.

I'd get a P2M type-S with Praxxis rings - as suggested upthread, that's what I replaced my SRM with and it's been 100% reliable, no more dropouts, it just works.


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PostPosted: Mon Jun 23, 2014 12:49 am 
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Posts: 379
Geoff wrote:
I am running it on Nibali's old bikes


No idea what you mean by this, but I lolled anyway.

Thanks again for all the info; so SRM is a bit iffy then? They seem to be something of a standard in the pro-peloton...

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PostPosted: Mon Jun 23, 2014 3:47 am 
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Joined: Sat May 26, 2012 11:26 pm
Posts: 683
SRM do not seem like a standard anymore.

Sky - Stages
Movistar, Lampre (for now) - Power2max
Garmin-sharp - vector
Omega-Pharma - Quarq.
Belkin - Pioneer
Astana, BMC, Cannondale, Greenedge, Katusha, Lotto, Trek Factory, Tinkoff Saxo and Giant Shimano

I have a stages si arm on my si sls, work great, light and cheap.

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PostPosted: Mon Jun 23, 2014 4:05 am 
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Joined: Sun Jan 26, 2014 3:44 am
Posts: 379
Thanks for the info.

I emailed the Stages guys about their plans to do a SiSL2 version, but they said it was not possible yet, as the fitting process shags up the paint/anodising on the SiSL2 cranks (whereas the Si cranks have no such problem).

Will have a good nerd-up about all the different possibilities listed. Cheers.

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PostPosted: Mon Jun 23, 2014 6:32 am 
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Joined: Sat May 26, 2012 11:26 pm
Posts: 683
You can use the SI crank on the SISL2, just change the non-drive side. Spindle, spacers and driveside can stay as is. It will still be by far the lightest option. My stages SI weighed 170g in 172.5. My SISL was 143g. The SISL2 was around 122g per arm. Stages SI = + 48g. You will not find a lighter power meter, especially as you will have to go without the light spiderings to run SRM/quarq/P2M.

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PostPosted: Mon Jun 23, 2014 8:17 am 
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Joined: Sat Oct 23, 2010 9:36 am
Posts: 398
Location: Eastern Coast of the Baltic Sea
I run P2Max Type S on SISL2 with Praxis 52/36 rings. Weight penalty against the same setup with 50/34 Spiderings is 175g.


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Posted: Mon Jun 23, 2014 8:17 am 


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