Rise in power since PM upgrade

gotwood25
gotwood25 Posts: 314
Just wondering if anyone here has Garmin Vectors that they have upgraded to v2?

I have just upgraded and noticed on my first ride with them that my power is reporting around 10% higher than before and was wondering if anyone had experienced the same?

I have seen some comparison testing with PMs and noticed that the Vector typically reports the lowest wattage output against other models so maybe Garmin have made some changes to the way they work it out.

Comments

  • Possibly been brought into line by Garmin with the V2's.
    Have you double checked they're torqued up precisely to the correct tightness?
  • gotwood25
    gotwood25 Posts: 314
    Possibly been brought into line by Garmin with the V2's.
    Have you double checked they're torqued up precisely to the correct tightness?

    Yeah I am torqued up right although that doesn't really affect v2 as the pods attach in a different way so the torque doesn't come into it. From what I have read for the v1 version the torque only reduced readings (if under torqued) it didn't overcompensate however if you went over.
  • Hmmm strange then. Maybe your V1's were slightly under-torqued? (torque wrench reading slightly out)

    Or maybe you've just gained an 10% extra in leg power! :D Either way, as long as the new V2 readings are consistent and repeatable it doesn't really matter I guess.
  • RChung
    RChung Posts: 163
    Hmmm strange then. Maybe your V1's were slightly under-torqued? (torque wrench reading slightly out)

    Or maybe you've just gained an 10% extra in leg power! :D Either way, as long as the new V2 readings are consistent and repeatable it doesn't really matter I guess.
    Hmmm. Seems like this is an example where consistency and repeatability aren't enough. He doesn't know which one (if either) is accurate.
  • gotwood25
    gotwood25 Posts: 314
    Hmmm strange then. Maybe your V1's were slightly under-torqued? (torque wrench reading slightly out)

    Or maybe you've just gained an 10% extra in leg power! :D Either way, as long as the new V2 readings are consistent and repeatable it doesn't really matter I guess.
    Hmmm. Seems like this is an example where consistency and repeatability aren't enough. He doesn't know which one (if either) is accurate.

    Accuracy in itself is irrelevant, the numbers for both versions have been very consistent and repeatable which is all you can want really. I will take any bump in FTP though, it's like gaining free power :-)
  • Dodger747
    Dodger747 Posts: 305
    I have seen some comparison testing with PMs and noticed that the Vector typically reports the lowest wattage output against other models so maybe Garmin have made some changes to the way they work it out.

    It should be the opposite, as they will have the least mechanical loss compared to the crank and hub.

    From the info, seems like the V1s were under-torqued/under-reading for whatever reason...
    VO2 Max - 79 ml/kg/min
    W/kg - 4.9
  • RChung
    RChung Posts: 163
    Hmmm. Seems like this is an example where consistency and repeatability aren't enough. He doesn't know which one (if either) is accurate.
    Accuracy in itself is irrelevant, the numbers for both versions have been very consistent and repeatable which is all you can want really. I will take any bump in FTP though, it's like gaining free power :-)
    If accuracy is irrelevant then you shouldn't care about the difference. End this thread and be happy.
  • gotwood25
    gotwood25 Posts: 314
    If accuracy is irrelevant then you shouldn't care about the difference. End this thread and be happy.

    I don't care about the difference, in fact, I am rather happy about it (obviously that wouldn't be the case if it went down :-) ).

    My initial question was, for Vector owners, who have performed the upgrade if they had also experienced a jump. So will leave the thread as is.
  • If accuracy is irrelevant then you shouldn't care about the difference. End this thread and be happy.

    I don't care about the difference, in fact, I am rather happy about it (obviously that wouldn't be the case if it went down :-) ).

    My initial question was, for Vector owners, who have performed the upgrade if they had also experienced a jump. So will leave the thread as is.
    A 10% difference tells me something is badly wrong with one or both power meters or how they are being used/installed. Not sure how that's a source of joy :)

    A large crank length setting difference perhaps?
  • ollie51
    ollie51 Posts: 517
    edited August 2015
    Read the instillation manual properly and use a torque wrench. Vectors appear to have some wild values, particularly when improperly installed.
  • gotwood25
    gotwood25 Posts: 314
    Appreciate the replies chaps.
    Just to confirm, installations on both variations is spot on. I've had the v1 system for over a year now so pretty comfortable fitting it and torquing correctly. Torque on the v2 system doesn't matter too much as the pods aren't binded to the pedal in the same way. As it is I have still torqued them to the recommended amount and performed the correct calibrations pre-ride.
  • stueys
    stueys Posts: 1,332
    Upgraded mine to Ver 2 last week, no jump in power, levels shown are consistent with pre-upgrade. I would take them apart again and check the install, I can't understand how the upgrade should increase power.

    I do have the dropout issue that has been reported with the latest firmware (ver 3.5) though, this manifests itself as low reported power and is making my vectors fairly useless. Garmin have yet to react to the issue but it seems to be impacting a lot of people on the garmin forums, I'd avoid the firmware update if not too late.
  • gotwood25
    gotwood25 Posts: 314
    Upgraded mine to Ver 2 last week, no jump in power, levels shown are consistent with pre-upgrade. I would take them apart again and check the install, I can't understand how the upgrade should increase power.

    I do have the dropout issue that has been reported with the latest firmware (ver 3.5) though, this manifests itself as low reported power and is making my vectors fairly useless. Garmin have yet to react to the issue but it seems to be impacting a lot of people on the garmin forums, I'd avoid the firmware update if not too late.

    I think that may have been the problem, I had upgraded to 3.5 before a training camp in the Dolomites and Alps and noticed drop outs and low-ish readings. Upgraded after I got back and think its a combination of the new pods working as they should and also improvement from killing myself up mountains for 4 weeks :-)
  • stueys
    stueys Posts: 1,332
    I think that may have been the problem, I had upgraded to 3.5 before a training camp in the Dolomites and Alps and noticed drop outs and low-ish readings. Upgraded after I got back and think its a combination of the new pods working as they should and also improvement from killing myself up mountains for 4 weeks :-)

    You need to tell me how you got the dropouts to go away, my Vectors are fairly useless since 3.5, my average NP is often 25 watts lower than it should be...
  • gotwood25
    gotwood25 Posts: 314
    I think that may have been the problem, I had upgraded to 3.5 before a training camp in the Dolomites and Alps and noticed drop outs and low-ish readings. Upgraded after I got back and think its a combination of the new pods working as they should and also improvement from killing myself up mountains for 4 weeks :-)

    You need to tell me how you got the dropouts to go away, my Vectors are fairly useless since 3.5, my average NP is often 25 watts lower than it should be...

    Only had it happen the once since I upgraded to the v2 hardware and that was after I knocked the pedal on a kerb. Rode on for about 6 miles realising that only one side was transmitting so pulled over and removed the batteries for 10 seconds. Been fine since.

    On the v1 model they dropped all the time, as I say, training camp data was totally useless which was very annoying.
  • jgsi
    jgsi Posts: 5,062
    is it worth the £80 for the upgrade kit for the Vector S.. I wonder...?
    the v1 pod on Sunday died after 2 hours racing...lost 30 mins
  • gotwood25
    gotwood25 Posts: 314
    is it worth the £80 for the upgrade kit for the Vector S.. I wonder...?
    the v1 pod on Sunday died after 2 hours racing...lost 30 mins

    If you phone Garmin support they will upgrade you for free for the slightest issue. The fact is they have no v1 stock left so it is their only option. To their credit their support is excellent, I got the full upgrade kit for free. Worth a punt at the very least.
  • jgsi
    jgsi Posts: 5,062
    is it worth the £80 for the upgrade kit for the Vector S.. I wonder...?
    the v1 pod on Sunday died after 2 hours racing...lost 30 mins

    If you phone Garmin support they will upgrade you for free for the slightest issue. The fact is they have no v1 stock left so it is their only option. To their credit their support is excellent, I got the full upgrade kit for free. Worth a punt at the very least.

    It's a thought... but the v1 pod has been pretty reliable since January when I did break one and garmin replaced.. as you say their support is always up there.
    The power data never lets me down during Trainer Road sessions but obviously never that long.
    I'm on a longish training (wind down after season) ride on Sat.. if it plays up again