Brim brothers

tunney

http://www.brimbrothers.com/2010/09/validating-the-market/

The prototype is on the laces - is it just an accelometer - ala a garmin or polar foot pods?

Chips Lovell

Saw that. I assumed the thing on the top of the shoe was a transmitter.

Lumen

Pressure sensor in foot bed?

tunney

Lumen wrote: »

Pressure sensor in foot bed?

So I had thought but whats that chunk on the laces?

Lumen

tunney wrote: »

So I had thought but whats that chunk on the laces?

I assume (as El Tonto did) that's the transmitter but also the electronics. There wouldn't be enough space in the footbed to put all the gubbins, and you wouldn't want the electronics to be stood on. Having just the strain gauges underneath makes more sense.

Wouldn't work for me though - I use my Spesh shoes without the footbed to give me more room. Still, a shoe purchase is relatively small beer.

IM0

they're a bit late with this, the Polar and Look combination looks to be where its at at the moment, and their system looks like an SRM type solid no messin reliable device.

Cant see them taking on them tbh, if they had of got it to market before them they had a chance, but now? not so sure

Nietzschean

me@ucd wrote: »

they're a bit late with this, the Polar and Look combination looks to be where its at at the moment, and their system looks like an SRM type solid no messin reliable device.

Cant see them taking on them tbh, if they had of got it to market before them they had a chance, but now? not so sure

polar/look combo is not going to topple the ANT+ userbase imo, they could produce the exact same system but with ANT+ compatibility and it would probably shift more units imo.

Chips Lovell

Also having a the sensors in the cleat rather than the pedal makes it far more convenient to use with multiple bikes. I still think that if they can pull it off, it would be a very interesting alternative.

levitronix

I remeber reading a while back that this company was also developing a pedal based power meter, guess thats gone out the window now

billy.fish

Pity its all be done in the 70's before and shown to be inaccurate ehy....

FWIW, i wont be investing in this system.

Also on the accelerometers idea, I have done some work in our labs and published some work on it. [nerd]http://www.mdpi.com/1424-8220/10/8/7216/[/nerd]

Works as an accurate measure of PO if an established baseline is recorded, working on some other ideas to refine it at the moment, total sideline in research so don't care to much about it TBH.

Only cost about €50 for the setup we used too....off the shelf parts.

But i digres.....

tunney

Nietzschean wrote: »

polar/look combo is not going to topple the ANT+ userbase imo, they could produce the exact same system but with ANT+ compatibility and it would probably shift more units imo.

ANT+ is owned and run by Garmin.

Any pedal based system (including the brim brothers one) would have two separate power readings. Some electronics to combine and rebroadcast a single reading would be required if the ANT+ units didn't support Power-L and Power-R readings. Which they don't.

Ant+ is unlikely to ever fly with any pedal, or shoe based, system without significant issues.

Lumen

tunney wrote: »

ANT+ is owned and run by Garmin.

Any pedal based system (including the brim brothers one) would have two separate power readings. Some electronics to combine and rebroadcast a single reading would be required if the ANT+ units didn't support Power-L and Power-R readings. Which they don't.

Ant+ is unlikely to ever fly with any pedal, or shoe based, system without significant issues.

Can't they just use proprietary inter-shoe transmission then combine the readings in one of the shoes before rebroadcasting as Ant+?

tunney

Lumen wrote: »

Can't they just use proprietary inter-shoe transmission then combine the readings in one of the shoes before rebroadcasting as Ant+?

You'd think, but seemingly it throws up huge technical problems. (Based solely on discussions over the metrivector implementation on other boards)

ednwireland

shouldnt they be called the brothers brim

[\coat] [\i'll get me coat]

Lumen

tunney wrote: »

You'd think, but seemingly it throws up huge technical problems.

Right. To be honest, I think the whole "transferrable power meter" idea is a bit questionable.

It's a solution to the "expensive component" problem, but no-one worries about transferring Di2 between bikes. I mean, it's technically possible but no-one is complaining that it is awkward, because people accept that a groupset is part of the bike.

An alternative solution is for the power meters to be simpler and cheaper (i.e. commoditized), so that people can afford one per bike.

The crank is a very sensible place for a PM. No moving parts and away from impact points. How many people have busted a crank in a crash, compared to pedals and wheels?

levitronix

Speed play will have a similair system out next year as well working wit metrigear

Chips Lovell

levitronix wrote: »

I remeber reading a while back that this company was also developing a pedal based power meter, guess thats gone out the window now

No, there's was always in the cleat.

levitronix

your more than likely right

Haldir

Further info here:
http://velonews.competitor.com/2010/09/interbike/brim-brothers-new-approach-to-measuring-power_142834

stecleary

Now on kickstarter and already smashed its target
http://www.stickybottle.com/latest-news/irish-cyclists-radical-new-power-meter-design-pulls-in-huge-investment/