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Old 12-14-12, 05:34 PM   #1
refthimos
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Do you have a Cervelo T1 and Dura-Ace FC-7710 Cranks??? Help!

I'm looking to out together a T1 for training/racing and with SRMs on all my other bikes, it's gotta have a power meter. Another SRM is just not in the budget for this bike, so I am looking at the new Stages power meter (Stages Website). I'd rather avoid a debate on the usefulness of a PM that only measures power on one side, and I have just one simple question:

How much clearance is there between the non-drive (left) crankarm and the chainstay?

In order to use the Stages PM, it will need to be at least 10mm. Stages has a handy-dandy web page showing an easy way to measure the gap, but in any event, I would be super grateful if someone with a T1 running the FC-7710 crank could help me out with this question.

Thanks!
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Old 12-14-12, 06:17 PM   #2
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Check your clearance, Clarence.



looks worrisome.
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Old 12-18-12, 11:18 AM   #3
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looks worrisome.
I was hoping for an answer a little more precise than "worrisome" - is there anyone out there with this combo that can tell me if there is 10mm of clearance from the non-drive chainstay???
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Old 12-18-12, 11:29 AM   #4
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I'll snap a pic of mine later today, but I have a campy pista crank tho.
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Old 12-18-12, 11:46 AM   #5
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Maybe the company can send you a non-working demo left crank arm for a test fit? It's worth a phone call to ask
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Old 01-16-13, 11:31 AM   #6
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How much clearance is there between the non-drive (left) crankarm and the chainstay?
I now have my T1 built up with the FC-7710 crank and there is plenty of clearance. In fact, if Stages ever made a drive side arm PM, there is plenty of clearance on that side as well. Looking forward to slapping on the Stages PM and seeing how it performs.
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Old 01-16-13, 12:38 PM   #7
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I now have my T1 built up with the FC-7710 crank and there is plenty of clearance. In fact, if Stages ever made a drive side arm PM, there is plenty of clearance on that side as well. Looking forward to slapping on the Stages PM and seeing how it performs.
Why did you choose Stages?

If you have SRM, I would imagine that any data from Stages would seem less than stellar.

I have SRM on my track bike. I've used PowerTap on my road bike and was less than impressed after having the SRM.
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Old 01-17-13, 03:13 PM   #8
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Why did you choose Stages?

If you have SRM, I would imagine that any data from Stages would seem less than stellar.

I have SRM on my track bike. I've used PowerTap on my road bike and was less than impressed after having the SRM.
Pretty simple, really:

(1) The track is really a training environment for me and I simply won't be as demanding of the power data from my track time as I would be if I was really focused on track results.
(2) I want some kind of PM on the track bike, if nothing more than to give me a decent idea of what I am doing out there. Also, my OCD side rears its ugly head and finds it unacceptable to have PM for my road and TT bikes but not for the track.
(3) I already consider myself a but ridiculous for having 3 SRMs (2 road bikes, TT bike) and buying a 4th at the even more ridiculous price of the SRM track unit just seemed, well... ridonkulous.
(4) The Stages PM is cheap and unless it's a total POS, it should serve my limited purposes fairly well.
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Old 01-17-13, 03:35 PM   #9
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Oh I should also add that I see my track bike as a thing of simple beauty, zen-like really, and so trying to gerry-rig a road PM for track use does not appeal to me. That also eliminates getting my hands on an old wired SRM. Wires on my track bike would be sacrilege!
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Old 01-18-13, 02:50 AM   #10
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Oh I should also add that I see my track bike as a thing of simple beauty, zen-like really, and so trying to gerry-rig a road PM for track use does not appeal to me. That also eliminates getting my hands on an old wired SRM. Wires on my track bike would be sacrilege!
I have a wired SRM on my LOOK 496. I'm OK with it Actually my SRM functions wired and wirelessly (custom job by SRM). But, I prefer it in wired mode.

Many sprinters prefer the wired units because there isn't the lag in the start of recording that wireless has.

Here is Chris Hoy's SRM PCV (wired):



There are many others in this gallery: http://www.bikeradar.com/road/galler...ngines-33634/1
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Roadies can run tempo all year as that's what humans were designed for. If you want to be a cheetah, lay around and lick your paws more.
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Old 01-18-13, 03:16 AM   #11
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I have a wired SRM on my LOOK 496. I'm OK with it
+1 I'd rather have wires and accurate data. Bit of coloured tape matching the frame and you can barely see the wires anyway.

If you already have 3 SRM's and if any are wired, you can keep an eye out for just the cranks for sale and using the one PCV change the slope between bikes. This is how I picked up my track SRM. Ended up being ~US$1,200, which isn't a huge deal more than the Stages product and accurate (mine is an older Science model).
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Old 01-29-13, 05:09 AM   #12
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Oh I should also add that I see my track bike as a thing of simple beauty, zen-like really, and so trying to gerry-rig a road PM for track use does not appeal to me. That also eliminates getting my hands on an old wired SRM. Wires on my track bike would be sacrilege!
Further to the accurracy of the Stages PM - dcrainmaker has tested one and given his results I would get over your dislike of wires...

http://www.dcrainmaker.com/2013/01/s...th-review.html

Cut to the chase summary:

Quote:

In summary, at present I donít feel that the Stages Power unit will work for me as my primary power meter. The variations in data from workout to workout, and the variations within a workout make it difficult to analyze and come to meaningful conclusions on power-focused workouts. I do however feel that with more work on the software side, they may be able to stabilize some of the power outputs and ultimately simply have a known offset (due to left-leg power). However, there are still significant unanswered questions around how stable ones power balance is from left to right on both an individual basis, as well as throughout varying conditions over the course of training or racing.
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Old 01-29-13, 11:29 AM   #13
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After I get my road bike fitted with a quarq, I'm going to save up for another quarq so I can use this on the track bike.


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