Compatible Sensors & Power Meters

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    Aaron Johnson

    Hello Christian,

    We have a problem with the TICKR X using bluetooth for the Mac App.  It is going to take a full rebuild over the next 4 months to get it fixed.  You can use ANT+ and it should be working.  For iOS the TICKR X should be working.  You will have to email theminions@thesufferfest.com so we can log the issue if it is not. 

    For the 4iiii power meter, we only need you to connect to power in the power section for iOS and OS X.  The App will know to pull cadence from that power meter.  This means you leave the cadence section blank for now.  We will be changing this in the future to work like the Windows App.  This means you would be able to connect your power meter in the cadence section also.  

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    kipeters

    Aaron,

    while the Powertap P1s pedals seem to indeed double report power in the iOS app, they seem to work fine under the MacOS app. This was even true in version 4.0.

    -Kirk

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    Aaron Johnson

    Hey Kirk, I'm trying to track this down.  Is the double reporting only happening with Bluetooth on iOS? 

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    kipeters

    Correct.  I use Bluetooth on both my iPhone and laptop and it only happens on my iPhone.

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    Aaron Johnson

    Okay thanks Kirk.  I thought it was bluetooth on all Apps, but this seems to only be a problem with iPhone.  I'll need to record that. 

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    kipeters

    It was a happy surprise for me that it worked correctly under MacOS.

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    Christian

    Aaron, a quick question: I know how to use my power meter with the app, and I know how to pair a speed sensor using virtual power. I do like how, when using the speed sensor and virtual power, I get to have a distance and average speed on the workout logs, e.g. on strava. Now it seems that if I connect my power meter, I loose the ability to also connect a speed sensor and thus I loose the distance and speed information. Of course, power meter is preferable over virtual power, so any tips how I could use them both at the same time?

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    Aaron Johnson

    Hello Christian, and I don't have a good answer. 

    Basically, we don't have a Watts to Kilo calculation or the ability to add speed sensors with power meters.  This means we can't record the distance or speed when using a power meter.  This is something we are looking at changing in the future.  

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    Christian

    Too bad. It seems all the bits are there in the app: clearly the app can record speed and distance info (which it does when using virtual power and a speed sensor) and clearly the app can use a power meter as main power input. It's just that presently, the user is not given the choice to use both at the same time, since speed sensor selection is not a choice when using power meter.

    This may not seem like a big deal, but I personally spend a lot of time on the trainer (long Ontario winters) and really want my indoor mileage reflected in my annual totals, so what I end up doing a lot is using zwift while watching old sufferfest videos from the pre-app days, even though I'd really prefer using the SF app directly (especially now with new the 4DP stuff, the target power numbers on the screen and the newer content) but I can't really justify paying for two indoor cycling app subscriptions...

     

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    Justin Walstad

    Aaron, first of all let me say thanks for a great app. I love it. One of the reasons for this love is portability. I work as an airline pilot and spend at least 2 nights a weeks in hotels. This leaves me using the app on stationary Hotel gym bikes. Not ideal, but they get the job done. I would like to start training with power through the sufferfest app. The only way I see this as being possible is with a pedal based system, powertap P1 seeming to be the best option. However I’m not sure if this will work based on what I’m reading above. I run the app on my iPad, and I can’t receive Ant+, only BLE. Am I understanding this right? If I am able the connect the power meter, is there a way to set crank arm length in the app? Thanks, Justin

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    kipeters

    Justin, I use the single-sided P1s pedals with Sufferfest and overall they work really well (except for the double reporting problem under iOS but you would avoid that with the double-sided P1 pedals).  One uses the free PowerTap app to set the crank length.  This value is stored on the pedals, so the Sufferfest app doesn't need to bother with it.  I also do the zero offset in the PowerTap app prior to a Sufferfest workout as well.   -Kirk

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    Aaron Johnson

    Hello Justin, and I hear your pain.  I do travel somewhat also and getting power to the App would be great.  We just need to make a deal with some of these US hotel chains to buy into our App and get some nicer bikes like the Stages SC3, Wattbike Atom, or Schwinn with the Echelon 2.  

    The powertap P1S will double report on the bluetooth connection with iOS.  It's a bummer right now and happens with 4iiii also.  You might want to look at the Garmin Vector 2s/3s which doesn't have that issue.  The double reporting happens on PowerTap because they communicate differently when running single and double sided.  We have to build code for the single sided still.  

    I'm assuming your are going to bring your pedal with you to the gym and also a tool to pull off the pedal on the Hotel bike.  That would work, but if you want accurate numbers I would get the ANT+ dongle since we do pull the P1s correctly with ANT+.  Or, you can buy the Vector 2s/3s.  

    The only other obstacle I see with the single power meter and using it at a hotel, is the other pedal.  Most hotel gyms don't use the Look system and they only work with SPD.  I don't know of any power meter pedal system that uses SPD.  I think they are all Look which is crazy to me.  

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    Justin Walstad

    Thanks for the reply. All the hotel bikes I use are Lifefitness and the like. I would bring a tool to swap both pedals and my own shoes. You mention the issue with the P1S, but what about the P1?

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    Aaron Johnson

    Justin, the P1 is good to go.  

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    Cameron Thornton

    Is there an ETA on when the 4iiii single sided power meter issue will be patched?  Or if there are plans?  I'm sure you guys are unbelievably busy, so any response enormously appreciated.  Thanks so much!

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    Timothy Flott

    Hi Aaron, So the PowerTap P1 pedals are good to go? Am I right to assume that since only the left pedal connects via BLE, that both left and right are reported through it? Also is there a way to apply 3s power smoothing in the app, using the raw data can be pretty annyoing to try and sit on a number. Thanks!

    Update: I have compared the files from my Garmin, connected via Ant+, and the Sufferfest app, connected via BLE, and there is about a 10-15w difference in most cases and in the Average watts and normalized watts. is this becuase the BLE connection for the P1 is actully only doubling the power value recieved from 1 of the pedals and not taking both values

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