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Another new PM

13»

Comments

  • #62
    Lumen
    Registered Users, Registered Users 2 Posts: 30,520 ✭✭✭✭Lumen


    ROK ON wrote: »
    The people that I know with PMs aint winning a whole lot of races. The small amount of folks that I know who have won races don't have PMs.
    No while this data set maybe too small to infer anything meaningful from its analysis, I nevertheless am prepared to accept the results as they stand.

    That merely tells you that power meters are unnecessary, which is so obvious as to not need stating.

    All that matters is what's useful to you. Following correlations is a mugs game, or else I'd just change my name to Gareth McAvinchey-Sherlock, put on a pair of sandals and baggy shorts, and win everything.


  • #63
    ROK ON
    Closed Accounts Posts: 6,831 ✭✭✭ROK ON


    Lumen wrote: »
    That merely tells you that power meters are unnecessary, which is so obvious as to not need stating.

    All that matters is what's useful to you. Following correlations is a mugs game, or else I'd just change my name to Gareth McAvinchey-Sherlock, put on a pair of sandals and baggy shorts, and win everything.


    If you have to wear sandals and baggy shorts then I suggest that its a race not worth winning.
    Sure you might as well grow a beard and travel around the world like some class of hairy legged hippy :-)

    Oh wait . . .


  • #64
    billy.fish
    Closed Accounts Posts: 671 ✭✭✭billy.fish


    tunney wrote: »
    .... Bar billy.fish, he rides like an ault wan.

    Whats that chicken legs?


  • #65
    tunney
    Registered Users, Registered Users 2 Posts: 12,585 ✭✭✭✭tunney


    billy.fish wrote: »
    Whats that chicken legs?

    Sorry fat ass? Shouldn't you be eating cake?


  • #66
    billy.fish
    Closed Accounts Posts: 671 ✭✭✭billy.fish


    I left the cake in your house.

    I did take my beer back thogh.... to good for you.

    Back on topic though :

    http://laserspokeproject.com/

    another new PM


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  • #67
    tunney
    Registered Users, Registered Users 2 Posts: 12,585 ✭✭✭✭tunney


    billy.fish wrote: »
    I left the cake in your house.

    I did take my beer back thogh.... to good for you.

    Back on topic though :

    http://laserspokeproject.com/

    another new PM

    Hmmmm, using the wheel itself as the reference and effectively as part of the strain gauge. Seems like it's gonna have some stability problems across temperature and dependencies on wheel construction, spoke tension, etc. I'd guess they're using a pulsed signal with some coding and signal averaging to deal with stuff like rain and particles in the optical path but it doesn't sound like a good option for a cross or MTB wheel.

    At least the user should be able to check performance statically (wonder how much variation in hub to rim displacement happens with the mirror up top, down on the bottom, front or back of the wheel's cycle?) But I'd guess this unit is going to struggle with accuracy in real world conditions.

    Bit useless for a disk wheel

    I suspect it could be very accurate


  • #68
    billy.fish
    Closed Accounts Posts: 671 ✭✭✭billy.fish


    tunney wrote: »
    Hmmmm, using the wheel itself as the reference and effectively as part of the strain gauge. Seems like it's gonna have some stability problems across temperature and dependencies on wheel construction, spoke tension, etc. I'd guess they're using a pulsed signal with some coding and signal averaging to deal with stuff like rain and particles in the optical path but it doesn't sound like a good option for a cross or MTB wheel.

    At least the user should be able to check performance statically (wonder how much variation in hub to rim displacement happens with the mirror up top, down on the bottom, front or back of the wheel's cycle?) But I'd guess this unit is going to struggle with accuracy in real world conditions.

    Bit useless for a disk wheel

    I suspect it could be very accurate

    If you were in college you'd be done for plagiarism...

    Nice concept though


  • #69
    mloc123
    Registered Users, Registered Users 2 Posts: 9,445 ✭✭✭mloc123


    http://translate.google.ie/translate?js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&sl=auto&tl=en&u=http%3A%2F%2Fnyx.at%2Fbikeboard%2FBoard%2Fshowthread.php%3F140445-power2max-leistungsmesser-im-test-fotos&act=url


  • #70
    Lumen
    Registered Users, Registered Users 2 Posts: 30,520 ✭✭✭✭Lumen


    The autocalibration looks appealing. Recalibrating my Quarq through the Garmin before every ride is a PITA, and without doing that I just don't feel confident in trusting the numbers. I also like the auto cadence stuff - no magnet.


  • #71
    mloc123
    Registered Users, Registered Users 2 Posts: 9,445 ✭✭✭mloc123


    At €990 for a SRAM crank I think it is worth a chance, will wait a few months for some reliability feedback. DC Rainmaker should have a review online soon.... I hear.


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  • #72
    tunney
    Registered Users, Registered Users 2 Posts: 12,585 ✭✭✭✭tunney


    mloc123 wrote: »
    http://translate.google.ie/translate?js=n&prev=_t&hl=en&ie=UTF-8&layout=2&eotf=1&sl=auto&tl=en&u=http%3A%2F%2Fnyx.at%2Fbikeboard%2FBoard%2Fshowthread.php%3F140445-power2max-leistungsmesser-im-test-fotos&act=url

    You didn't even credit me with this.

    The price of one of these is the same as 3-4 srm battery changes (albeit thats 6-8 years)


  • #73
    mloc123
    Registered Users, Registered Users 2 Posts: 9,445 ✭✭✭mloc123


    tunney wrote: »
    You didn't even credit me with this.

    The price of one of these is the same as 3-4 srm battery changes (albeit thats 6-8 years)

    Oh, you still have your login for boards?


  • #74
    niceonetom
    Registered Users, Registered Users 2 Posts: 4,833 ✭✭✭niceonetom


    SRAM buys power meter company Quarq

    Good thing or bad thing?


  • #75
    Lumen
    Registered Users, Registered Users 2 Posts: 30,520 ✭✭✭✭Lumen


    niceonetom wrote: »
    SRAM buys power meter company Quarq

    Good thing or bad thing?

    Meh. Probably a good thing if you have SRAM and a Quarq.

    I'm waiting on boarsie feedback on the power2max before ordering one. Quarq is great but just too expensive compared to power2max. The p2m autocalibration sounds great for convenience and would probably push me further away from other products.

    Campag need to sort something out. My brain hurts every time I try and work out whether 11sp will work with a given power meter.

    Power metering should just be another flavour of groupset.


  • #76
    Chips Lovell
    Moderators, Politics Moderators, Sports Moderators Posts: 24,279 Mod ✭✭✭✭Chips Lovell


    Lumen wrote: »
    Campag need to sort something out. My brain hurts every time I try and work out whether 11sp will work with a given power meter.

    Why wouldn't it?


  • #77
    Lumen
    Registered Users, Registered Users 2 Posts: 30,520 ✭✭✭✭Lumen


    el tonto wrote: »
    Why wouldn't it?

    Can't run campag chainrings because the BCD is different or different stiffness requires recalibration? Shouldn't use non-campag chainrings because the chainrings are a squillionth of a millimeter different width? Different ramp profiles?

    I've no idea. It just isn't very obvious what the recommended configuration is. Surely Campag should just have a simple FAQ page on their website like "Power meter compatibility".


  • #78
    Chips Lovell
    Moderators, Politics Moderators, Sports Moderators Posts: 24,279 Mod ✭✭✭✭Chips Lovell


    Ten speed chainsets work fine with 11 speed. So the way I'd see it pretty much all PMs would work with it it.


  • #79
    Lumen
    Registered Users, Registered Users 2 Posts: 30,520 ✭✭✭✭Lumen


    el tonto wrote: »
    Ten speed chainsets work fine with 11 speed. So the way I'd see it pretty much all PMs would work with it it.

    OK. So no need for campag chainrings at all?


  • #80
    niceonetom
    Registered Users, Registered Users 2 Posts: 4,833 ✭✭✭niceonetom


    Lumen wrote: »
    Power metering should just be another flavour of groupset.

    I assume you mean that groupset manufacturers should all be working on PMs and incorporating them into their lines. Ok. I can see that point but how the power data is displayed is the sticky bit for me...

    It's just as possible to see power measurement as an extension of GPS/HR as it is to see it as an extension of changing gears, and with Garmin and SRAM approaching the same problem from opposite side (and LOOK and POLAR attempting to solve it from somewhere in the middle) I'd be concerned that all these proprietary systems will take over from ANT+ and we'll all be mired in a compatibility nightmare going all the way from novel (stupid) BB standards all the way to closed data communication and groupset-specific computers (and who really want the return of flightdeck awfulness?).

    WHERE'S MY CHEAP PM???


  • #81
    Lumen
    Registered Users, Registered Users 2 Posts: 30,520 ✭✭✭✭Lumen


    Ant+ is fine. Standards are good.

    I just think that when ordering a groupset there should be a "power metering" option, so you don't have to think about spiders, bottom bracket compatibility charts, selling on your old crankset etc. You would then buy a "power metering" groupset/crankset and use whatever head unit you want.

    SRAM Red is about €700 more than Rival. It should easily be possible to offer a powermeter crank for that difference. Rival with power metering is way more compelling than Red.


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  • #82
    Coronal
    Registered Users, Registered Users 2 Posts: 395 ✭✭Coronal


    With Power2Max, it seems you can send them your existing crank. They fit the PM, costs around 690, excluding shipping. There's your 700 spent :)


  • #83
    Lumen
    Registered Users, Registered Users 2 Posts: 30,520 ✭✭✭✭Lumen


    Coronal wrote: »
    With Power2Max, it seems you can send them your existing crank. They fit the PM, costs around 690, excluding shipping. There's your 700 spent :)

    Yeah, but you need the right type of crank to begin with. Most decent cranks have an integrated spider so won't work, you need one with a removable spider.

    Obviously getting the aesthetics right is the most important consideration. :pac:


  • #84
    Coronal
    Registered Users, Registered Users 2 Posts: 395 ✭✭Coronal


    Hmm, didn't think of that (the spider, not the aesthetics. Obviously that's up there :pac:). I was browsing on shinybikes the other day and saw that they do offer groupsets without cranks. Didn't check the price differences to see if it was worth it.


  • #85
    niceonetom
    Registered Users, Registered Users 2 Posts: 4,833 ✭✭✭niceonetom


    Lumen wrote: »
    Ant+ is fine. Standards are good.

    I just think that when ordering a groupset there should be a "power metering" option, so you don't have to think about spiders, bottom bracket compatibility charts, selling on your old crankset etc. You would then buy a "power metering" groupset/crankset and use whatever head unit you want.

    I agree. That'd be great. Yay for standards.

    I just have trouble envisioning Shimano and Campag and SRAM all playing nice together and allowing Garmin, or anyone else using ant+, to soak up the data. I'm sure the assholes in marketing or the eggheads in R&D will succeed in making the case for the need for something proprietary and closed.


  • #86
    mloc123
    Registered Users, Registered Users 2 Posts: 9,445 ✭✭✭mloc123


    niceonetom wrote: »
    WHERE'S MY CHEAP PM???

    Power2max or Powertap? But come in under €700 now...

    When you consider what people wil pay for a Garmin or wheelset its not that expensive.


  • #87
    Beasty
    Administrators, Social & Fun Moderators, Sports Moderators, Paid Member Posts: 78,504 Admin ✭✭✭✭✭Beasty


    Brim Bros posts moved here


  • #88
    RobFowl
    Moderators, Science, Health & Environment Moderators Posts: 11,682 Mod ✭✭✭✭RobFowl


    https://www.youtube.com/watch?v=JPZ7hbNd1hE


    Looks very neat ...


  • #89
    tunney
    Registered Users, Registered Users 2 Posts: 12,585 ✭✭✭✭tunney


    RobFowl wrote: »
    https://www.youtube.com/watch?v=JPZ7hbNd1hE


    Looks very neat ...

    Should this not be moved to the vapourware board?


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