Keywords: assembly,power meter

Power meters - We need your help

Gerard Vroomen - 29-Mar-2017
We often get the question which power meters fit. We know some do and some don't, and have a modest list of both types. Luckily, a lot of the cranks on the "do not fit" list don't fit on a lot of frames, and several power meter makers have been working on updates. 


To make the most comprehensive list, we would like to get your feedback on power meters you have installed on your U.P. or ONE+. Any information on make/mode/model year of power meters you have run on your OPEN (or tried to and failed) would be appreciated, a photo would be a bonus. Feel free to leave information in the comments section or email me directly (with photos, that's obviously your only option, they can't go in the comments). My email is gerard@opencycle.com.

I will then summarise your findings and our own in a future update. If you are working for a power meter maker, I'd love to hear from you too, on the record or in confidence.

Thanks in advance!

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Comments & Questions

OPEN
I use rotor inpower 3D cranks. They work great!
Post #1 of 75. Posted by Jana Strait on 28-Mar-2017 22:48:43 GMT in reply to blog [0<--2671]
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OPEN
Thanks!
Post #28 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:47:42 GMT in reply to post #1 [2671<--2702]
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OPEN
I am running Rotor's 2IN Power. Perfect fit. I ran Rotor IN Power last year.
Post #2 of 75. Posted by Derek Lessard on 28-Mar-2017 22:49:54 GMT in reply to blog [0<--2672]
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OPEN
Yep, those always fit. As a frame designer, I definitely prefer cranks without things protruding but for power measurement, of course it's nice to use an external pod.
Post #29 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:48:22 GMT in reply to post #2 [2672<--2703]
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OPEN
Is that the new Direct Mount ?
Post #69 of 75. Posted by RON EITAN on 15-Apr-2019 18:37:43 GMT in reply to post #2 [2672<--18354]
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OPEN
Hey Gerard, I've have a Gen1 DA Shimano Stages - didn't fit but a Quarq Elsa RS with 170mm crank fitted perfectly. Cheers Ed
Post #3 of 75. Posted by Ed Hawkins on 28-Mar-2017 22:50:50 GMT in reply to blog [0<--2673]
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OPEN
Thanks Ed!
Post #30 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:48:31 GMT in reply to post #3 [2673<--2704]
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OPEN
What B.B. did you use? I’m having contact with my Elsa RS.
Post #63 of 75. Posted by greg on 17-Nov-2017 15:27:16 GMT in reply to post #3 [2673<--7206]
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OPEN
On my One+ have the Rotor Rex with their new inPower meter that lives inside the left crank. Cranks are a tight fit on the non-drivetrain side, but that is not due to the PM. While the PM works as intended, I think the inPower design is flawed. They put a weird triangle cap on the axle end of the crankarm, which then juts out beyond the BB, which for an MTB means the cap gets occasionally rubbed out by a rock or log. I went through one already, luckily they replaced it. SO I do NOT recommend inPower. I'm building up my UPPER with P2Max new NG PM, and I'll report on it when its built.
Post #4 of 75. Posted by Ilya Cantor on 28-Mar-2017 22:56:30 GMT in reply to blog [0<--2674]
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OPEN
To be clear, I don't recommend inPower for an MTB, but its likely a good choice for gravel
Post #5 of 75. Posted by Ilya on 28-Mar-2017 23:01:58 GMT in reply to post #4 [2674<--2675]
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OPEN
Yep, understood that, thanks for the detailed comments.
Post #27 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:47:28 GMT in reply to post #5 [2675<--2701]
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OPEN
I have had a SRM Dura Ace installed and a few fit problems. The new SRM coming out in April will fit no problem.
Post #6 of 75. Posted by Irvin Tremblay on 28-Mar-2017 23:37:45 GMT in reply to blog [0<--2676]
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OPEN
Hi Irv, yes, unfortunately I'm aware of that struggle.
Post #31 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:49:03 GMT in reply to post #6 [2676<--2705]
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OPEN
Quarq DZero - no prob!
Post #7 of 75. Posted by Dmitry on 28-Mar-2017 23:49:21 GMT in reply to blog [0<--2677]
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OPEN
Is this the Carbon version and on an UP? I want to order the same for my UP, that's why I am asking.
Post #15 of 75. Posted by Michiel on 29-Mar-2017 04:05:09 GMT in reply to post #7 [2677<--2686]
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OPEN
Yes! This is RED DZero Carbon HB installed with U.P.
Post #17 of 75. Posted by Dmitry on 29-Mar-2017 06:11:31 GMT in reply to post #15 [2686<--2688]
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OPEN
BB30/BB386 version.
Post #18 of 75. Posted by Dmitry on 29-Mar-2017 06:13:04 GMT in reply to post #15 [2686<--2689]
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OPEN
Thanks big time, order will be on its way soon.
Post #20 of 75. Posted by Michiel on 29-Mar-2017 07:42:47 GMT in reply to post #18 [2689<--2691]
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OPEN
Thanks Dmitry, super info!
Post #32 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:49:34 GMT in reply to post #18 [2689<--2706]
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OPEN
One last question, are you using the spacers as Andy has explained in a previous update for BB30 and SRAM Force1 cranks? I am moving from Force1 to Quarq DZero BB30, so if the answer would be yes I will replace it within 15 minutes.
Post #49 of 75. Posted by Michiel on 31-Mar-2017 05:49:45 GMT in reply to post #18 [2689<--2723]
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OPEN
Sorry I don't remerber it in details. But it takes no more than 15 min for replacing Force 1 for DZero.
Post #50 of 75. Posted by Dmitry on 31-Mar-2017 06:10:04 GMT in reply to post #49 [2723<--2724]
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OPEN
I use on my UP and on my UPPER the 4iiii precision with a Cannondale SiSl2 crank with 50/34 spider. It fits not 100% so my bike mechanic had a lot of more work to it fit, but now it works perfect. On my UP I rode almost a year with it and on my UPPER I did the first 2 rides. 4iiii allows you to send your crank to them and on the crank you can mark exactly where you want it. On my Open One + the 4iiii does not fit so I ride with the Quarq Sram Eagle spider but this is not on the crank and much more expensive. By the way a great bike the UPPER with the new fork, less weight is super and a superb new U-turn fork. I use it now also on the road with Bike Ahead BiturboRoad wheels with 28mm tires. I will sell both my Cannondale road bikes (Supersix Evo and the Synapse), the UPPER has the best of both and much more....! If you need more info do not hesitate to contact me.
Post #8 of 75. Posted by Matisse Etienne on 29-Mar-2017 00:50:19 GMT in reply to blog [0<--2679]
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OPEN
Hi Matisse, interesting info, thanks. Did you use the standard road BB spindle (109mm) with the SiSL2 cranks on your UP? I assumed the BB shell on the UP would be too wide for this, but haven't got around to trying it.
Post #24 of 75. Posted by Geraint on 29-Mar-2017 16:41:17 GMT in reply to post #8 [2679<--2695]
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OPEN
no, I didn't use the road spindle. The mtb spindle is used on my bike (122mm), washers are added to make it work.
Wave washer isnt't used for a good pre-load, clearance is minimal but enough.
Post #46 of 75. Posted by Matisse on 30-Mar-2017 15:27:30 GMT in reply to post #24 [2695<--2720]
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OPEN
Thanks for the reply, appreciate the info!
Post #47 of 75. Posted by Geraint on 30-Mar-2017 16:15:00 GMT in reply to post #46 [2720<--2721]
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OPEN
Tune Blackfoot SRM technically fits on, but a screw on the back of the SRM rubbed the BB of my One+ when rotating, so it was a no-go. The Blackfoot is tight fit anyway, especially with crank protection on the end of each arm.
Post #9 of 75. Posted by M on 29-Mar-2017 01:44:14 GMT in reply to blog [0<--2680]
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OPEN
I tried to fit my verve Infocrank classic 172.5 mm, but the transmitter pod on the non drive side touched the frame.
Instead I've installed a bePro PM for road and gravel use.
Post #10 of 75. Posted by Anders Mogensen on 29-Mar-2017 01:53:35 GMT in reply to blog [0<--2681]
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OPEN
It the UP by the way
Post #11 of 75. Posted by Anders Mogensen on 29-Mar-2017 01:54:52 GMT in reply to post #10 [2681<--2682]
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OPEN
That's usually the problem. An odd pod will not get the nod.
Post #33 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:51:21 GMT in reply to post #10 [2681<--2707]
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OPEN
did you ever get infocrank to work? i’m having the same issue.
Post #64 of 75. Posted by turn the cranks on 01-Apr-2018 12:49:24 GMT in reply to post #10 [2681<--10626]
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OPEN
No, don't think it's possible...
Post #65 of 75. Posted by Anders Skibsted Mogensen on 01-Apr-2018 15:03:08 GMT in reply to post #64 [10626<--10629]
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OPEN
I recently completed a U.P. build and have been using Garmin Vector 2 pedals. As I built it up myself (neophyte mechanic with anything other than Campy) I've been working out the bugs slowly and carefully, mostly on pavement or relatively benign gravel and dirt (mud here in Oregon this time of year). The pedal option works great for power, but obviously when I start to tackle more intense off road terrain, road cleats are not going to work.
Post #12 of 75. Posted by Greg Hartman on 29-Mar-2017 02:00:04 GMT in reply to blog [0<--2683]
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OPEN
Hi Greg, indeed the pedal based systems avoid the crank clearance issue. Simple but effective solution!
Post #34 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:52:07 GMT in reply to post #12 [2683<--2708]
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OPEN
Tried Stages for Campagnolo Record crank on 2017 Trek Emonda SLR. Won't work. Not enough clearance between Stages pod and chain stay.
Post #13 of 75. Posted by Ed Steck on 29-Mar-2017 03:03:53 GMT in reply to blog [0<--2684]
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OPEN
yes, the Record crank doesn't fit on the U.P. anyway so now there are two reasons why this crank won't work!
Post #35 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:52:39 GMT in reply to post #13 [2684<--2709]
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OPEN
I'd been thinking the same question for ages. Also for cadence sensors.
Anyway, I'm happy to report that a PowerTap fits perfectly :)
Post #14 of 75. Posted by Stuart on 29-Mar-2017 03:58:02 GMT in reply to blog [0<--2685]
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OPEN
Yes, another great way to avoid crank interference!
Post #36 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:52:59 GMT in reply to post #14 [2685<--2710]
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OPEN
Having PowerTap P1s on my Upper
Post #16 of 75. Posted by Stephen Green on 29-Mar-2017 04:09:08 GMT in reply to blog [0<--2687]
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OPEN
Thanks Stephen.
Post #37 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:53:12 GMT in reply to post #16 [2687<--2711]
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OPEN
i am almost done my UP build. The drive train will be Force cx1 and I plan on putting a stages meter ( like the picture) on the orange girl.
Great post Gerard. I too am somewhat confused my all the options for BB/crank/spindle requirements on the different meters.
Post #19 of 75. Posted by adam on 29-Mar-2017 07:39:24 GMT in reply to blog [0<--2690]
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OPEN
Most people are, including sometimes Andy and I. Stay tuned!
Post #38 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:53:51 GMT in reply to post #19 [2690<--2712]
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OPEN
I'm using Rotor InPower 3D cranks. Works fine and I believe a good choice for UP. Follow the bike (not pedals or wheels) and is protected. Easy battery change.
Post #21 of 75. Posted by Seppo on 29-Mar-2017 09:51:34 GMT in reply to blog [0<--2692]
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OPEN
Yes, popular choice.
Post #39 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:54:10 GMT in reply to post #21 [2692<--2713]
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OPEN
Currently building my Open U.P. I have the Rotor InPower (50/34) and the BB PF4630 from Rotor, still trying to figure out what spacer I need to install on DS and NDS.
Thanks
Olive
Post #70 of 75. Posted by Oliver on 04-Oct-2019 08:40:56 GMT in reply to post #39 [2713<--19780]
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OPEN
Hi Olive, best to ask that directly too Rotor. The frame uses a completely stock BB386EVO BB shell, so they should be able to tell you what spacers you need with that particular crank and BB.
Post #71 of 75. Posted by Gerard Vroomen on 04-Oct-2019 09:38:24 GMT in reply to post #70 [19780<--19781]
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OPEN
Thanks for the quick response Gerard.
Kind regards
Oliver
Post #72 of 75. Posted by Oliver on 04-Oct-2019 11:13:31 GMT in reply to post #71 [19781<--19782]
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OPEN
Quarks . . as in two. Both work seamlessly on OPEN 1.0 & UP.
Post #22 of 75. Posted by Edward O'Brien on 29-Mar-2017 12:12:26 GMT in reply to blog [0<--2693]
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OPEN
Which model on the U.P. the very recent version or previous generation?
Post #40 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:54:40 GMT in reply to post #22 [2693<--2714]
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OPEN
Gerard, greetings. Checking w my cycling guru, Clark Butcher . . and currently traveling afar . . I am thinking previous Quark version. As UP and One Point Zero were outfitted within several months of each other . . more to follow. Cheers.
Post #44 of 75. Posted by Edward OBrien on 30-Mar-2017 13:58:08 GMT in reply to post #40 [2714<--2718]
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OPEN
GXP current Dzero and Previous Elsa and Riken GXP
All work with Sean XSync chain rings
SRAM*

*per our man, Clark Butcher
Post #45 of 75. Posted by Edward OBrien on 30-Mar-2017 15:24:27 GMT in reply to post #40 [2714<--2719]
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OPEN
Hi Gerard, love your company philosophy and bikes! Andy and I have spoke a number of times about testing 4iiii on the U.P. or ONE +. We were close last year at Interbike but just ran out of time to make it happen (we've discussed this season). Also pleased to hear that one of your OPEN customers have made our product work on the U.P.
Post #23 of 75. Posted by Jay Park on 29-Mar-2017 12:50:58 GMT in reply to blog [0<--2694]
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OPEN
Well, let's talk :-)
Post #41 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:55:04 GMT in reply to post #23 [2694<--2715]
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OPEN
Rotor InPower 3D+ here, works well with either double or CX1 spider.
I have the parts to try a Stages Gen2 Dura-Ace 9000 on it as well, if this would be useful and no-one else can provide a straight answer.
Post #25 of 75. Posted by Geraint on 29-Mar-2017 16:44:26 GMT in reply to blog [0<--2696]
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OPEN
Relatively little info on Stages so far, their strength is my weakness, they update products so quickly it's hard to keep track. But I am also in contact with them directly.
Post #42 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:57:26 GMT in reply to post #25 [2696<--2716]
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OPEN
OK if it helps you then I'll have a go at fitting the Stages and report back.
Post #48 of 75. Posted by Geraint on 30-Mar-2017 16:18:11 GMT in reply to post #42 [2716<--2722]
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OPEN
Stages Gen 2 Dura-Ace 9000 does NOT fit. Just building my U.P. right now and tried to fit the power meter last night. Pod rubs on chain stay. Have not tried spacers yet, but I believe the locking lug on the crank arm would not seat correctly with the amount of spacers required. I'd guesstimate it would require around 5-8mm of spacers. Can get the exact amount if there is any interest.
Post #54 of 75. Posted by Dean on 09-Aug-2017 02:06:06 GMT in reply to post #42 [2716<--6968]
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OPEN
I would like to retract my previous statement - Stages Gen 2 Dura-Ace 9000 DOES fit! It was playing on my mind after posting the above comment, so I tried again with various spacers and I was way off on my guesstimate. I used 2mm of plastic spacers between the stages crank arm and the BB (Kogel 386/24) and I was able to have enough clearance and locate the locking lug correctly. It would fit with around 1mm of spacers, but the Stages pod would rub if there was a slight flex in any of the driver train/BB area of the frame. Mine is close with 2mm and I will put a small piece of 'helicopter tape' on the chain stay to monitor any rub from the pod. Hope this helps and apologies for my previous post which was based on assumption and not trial and error.
Post #55 of 75. Posted by Dean on 09-Aug-2017 03:13:56 GMT in reply to post #54 [6968<--6969]
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OPEN
Hi Dean, that's super, thanks for this information. We'll include that in an upcoming power meter update!
Post #57 of 75. Posted by Gerard Vroomen on 09-Aug-2017 20:54:46 GMT in reply to post #55 [6969<--6974]
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OPEN
Hi there, im interested to know how you got on with the spacing in the longterm? Did you run into any problems eventually?
Ive just bought the new U.P and a C-Bear 386/24 and was hoping to use my Stages Dura Ace 9170 Left crank with it. Ive looked elsewhere for people who use the same set up but theres not a lot of info out there.

Cheers
Post #68 of 75. Posted by Adam H on 19-Mar-2019 16:33:42 GMT in reply to post #55 [6969<--18320]
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OPEN
I know 4iiii has some technical info on their website regarding size, fitting and clearance. I don't own a UP but perhaps this may help.

http://4iiii.co...5.pdf
Post #26 of 75. Posted by Karmanya on 30-Mar-2017 11:48:28 GMT in reply to blog [0<--2697]
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OPEN
Thanks for the help!
Post #43 of 75. Posted by Gerard Vroomen on 30-Mar-2017 12:57:41 GMT in reply to post #26 [2697<--2717]
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OPEN
Hi Gerard and Andy,
I sent an e-mail before but have you confirmed?
An explanation about the combination of Pioneer powermeter + R9100 Dura-ace was sent along with the image.

U.P.+Rapha Edition
Post #51 of 75. Posted by Kaoru Komai on 03-Apr-2017 17:15:32 GMT in reply to blog [0<--2763]
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OPEN
Wahoo Elemnt with Wahoo Cadans works great. Never had a problem.
Post #52 of 75. Posted by William on 05-Apr-2017 02:30:24 GMT in reply to blog [0<--2769]
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OPEN
Powerpod will work - sounds obvious but might slip through the net!
Post #53 of 75. Posted by John on 08-Apr-2017 06:32:55 GMT in reply to blog [0<--2775]
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OPEN
So the GXP SRM does not work on the Open Plus-

Does anyone have experience with using the SRM Origin on the Open Plus? If, so what exact spindle type and bottom bracket did you use?

Same for Quarq? What exact model Quarq, spindle, and bottom bracket is needed for best results?
Post #58 of 75. Posted by John on 22-Sep-2017 17:38:25 GMT in reply to blog [0<--7088]
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OPEN
Not sure what you mean with the OPEN Plus, do you mean the ONE+? I would think the SRM Origin does not work, we have no experience with the Quarq. The new Easton/RaceFace power meters definitely work, and obviously come with a great crank.
Post #59 of 75. Posted by Gerard Vroomen on 30-Sep-2017 18:13:55 GMT in reply to post #58 [7088<--7112]
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OPEN
Does anyone know if the Shimano Dura Ace 9100 power meter will work?
Post #60 of 75. Posted by Dave Johnson on 31-Oct-2017 23:16:53 GMT in reply to blog [0<--7160]
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OPEN
The one with the Pioneer pods? Not very well, the pods stick out too much.
Post #61 of 75. Posted by Gerard Vroomen on 10-Nov-2017 07:32:04 GMT in reply to post #60 [7160<--7172]
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OPEN
No, I was thinking the Shimano branded 9100 power meter. Saw one at a bike shop the other day and the pods were very thin.
Post #62 of 75. Posted by Dave Johnson on 10-Nov-2017 10:57:58 GMT in reply to post #61 [7172<--7174]
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OPEN
Hey Gerard, I've just had my New Open U.P. built up with a 2015 SRM Dura Ace 9000 (50/34 - 172.5) using a Kogel 386EVO to 24 bottom bracket. My builder told me "The SRM DA powermeter won’t clear the BB386 shell on the drive side, so I had to shim it out about 5mm, and the chain line will move outward a bit". I'm not sure if this works or not... I see a comment below from March where you mentioned you're aware of the struggle with DA SRM's. Is this a bad idea to use the 5mm shim solution in your opinion?
Post #66 of 75. Posted by Alex on 10-Jul-2018 23:17:46 GMT in reply to blog [0<--13885]
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OPEN
Hi Alex, I do not think it's a good idea to shim it out 5mm, I don't see how you can then properly attach the left crank and even if you can, now your cranks are offset. It's impossible to try everything, but here is an overview of power meters we have tried: https://opencyc...-e-r-
Post #67 of 75. Posted by Gerard Vroomen on 11-Jul-2018 06:17:26 GMT in reply to post #66 [13885<--13893]
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OPEN
On my new (2 weeks old) UP I have gone through the 4iiii process of determining clearance of the SRAM Force AXS crank arm. This involves printing of their template and inserting a AAA battery along the space between crankarm and chain stay. It was a tight fit so I contacted 4iiii staff and they quickly confirmed it will work.
Post #73 of 75. Posted by Ed Gillmor on 13-Nov-2020 10:04:08 GMT in reply to blog [0<--22738]
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OPEN
Hi, I see this thread is not very active lately, but I am curious if the 4iii fit on the UP. Thanks!
Post #74 of 75. Posted by Eric Furstenberg on 19-Mar-2021 16:25:00 GMT in reply to post #73 [22738<--23010]
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OPEN
Hi Eric
Yes fits on the UP.
Post #75 of 75. Posted by Ed Gillmor on 19-Mar-2021 17:47:03 GMT in reply to post #74 [23010<--23011]
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