Another new PM

tunney · 23-08-2010 12:56PM #1

http://www.power2max.de/

Crank based. €690

No mention of accuracy though.

mloc123 · 23-08-2010 01:11PM

Any ideas when it is available? Will be interesting to see data.

mloc123 · 23-08-2010 01:16PM

Interesting, looks like it bolts in between the spider and chainring on certain chainset... would have to wonder about accuracy

Lumen · 23-08-2010 01:17PM

Tunney, you forgot the most important bit...

...110BCD is supported!

<freddy fistpump>

Teferi · 23-08-2010 01:18PM

Six man-years of development

Is anyone else reading that in the Powerthirst voice?

tunney · 23-08-2010 01:20PM

It should be easy to move between bikes.
It will be accurate - alot like SRMs to be honest. SRMs patent on crank based strain guage power measurement devices has expired. Will be interesting to see how they respond.

@Lumen - yip, will take a compact. However not sure it will work for you though as most of the ANT+ head units won't display wattages less than 50 watts.

Chips Lovell · 23-08-2010 01:26PM

Get a room

Lumen · 23-08-2010 01:27PM

tunney wrote: »

@Lumen - yip, will take a compact. However not sure it will work for you though as most of the ANT+ head units won't display wattages less than 50 watts.

Au contraire my be-man-bra'd chum.

The Garmin 705 comes in a special "sportivo" edition which supports three significant figures of wattage display. Whenever you are going under 100W (for me, most of the time) you get to see your power to the nearest 0.1W.

tunney · 23-08-2010 01:29PM

Lumen wrote: »

Au contraire my be-man-bra'd chum.

The Garmin 705 comes in a special "sportivo" edition which supports three significant figures of wattage display. Whenever you are going under 100W (for me, most of the time) you get to see your power to the nearest 0.1W.

I was of course joking I'm fully aware of the ANT+ head units generally have a "PlanetX compatibility" mode.

billy.fish · 23-08-2010 01:39PM

mloc123 wrote: »

Interesting, looks like it bolts in between the spider and chainring on certain chainset... would have to wonder about accuracy

Why? It has the same attachments system as many cranks out there. No reason it wont be accurate.

Thats like saying 'oh those XTR cranks dont look to stiff'

DirkVoodoo · 23-08-2010 02:22PM

Is there any reason I could buy just the PM and fix it to an existing set of cranks or will it only be compatible with the list on their site?

billy.fish · 23-08-2010 02:31PM

DirkVoodoo wrote: »

Is there any reason I could buy just the PM and fix it to an existing set of cranks or will it only be compatible with the list on their site?

Well:
1) its first generation
2)there are no details on accuracy
3) it'll only be compatible with certain cranks that take an internal spider

GO buy one and let us know if it works

DirkVoodoo · 23-08-2010 02:38PM

billy.fish wrote: »

Well:
1) its first generation
2)there are no details on accuracy
3) it'll only be compatible with certain cranks that take an internal spider

GO buy one and let us know if it works

So number 3 is really what I wanted to know, thank you.

Lumen · 23-08-2010 02:38PM

No SRAM S975, which is odd. The S900 is carbon-wrapped alloy.

The Vega crank appears to support a triple chainring setup, although I might be getting a little overexcited.

billy.fish · 23-08-2010 03:03PM

Lumen wrote: »

No SRAM S975, which is odd. The S900 is carbon-wrapped alloy.

The Vega crank appears to support a triple chainring setup, although I might be getting a little overexcited.

*Twitch*

tunney · 23-08-2010 03:07PM

billy.fish wrote: »

*Twitch*

A triple is a very valid chainset selection. Not everyone wants to race bikes Billy.Fish. Some people just want to ride to the shops every so often and happen to live in the Dolomites.

billy.fish · 23-08-2010 03:14PM

tunney wrote: »

A triple is a very valid chainset selection. Not everyone wants to race bikes Billy.Fish. Some people just want to ride to the shops every so often and happen to live in the Dolomites.

So get a compact

Lumen · 23-08-2010 03:21PM

billy.fish wrote: »

So get a compact

I read that most of the people doing the Marmotte were using triples. If you need stupidly low gearing, a triple is a better solution than a compact with a wider range cassette.

You cannot rise to the upper echelons of Fred-dom until your "stable" contains a Marmotte-specific bike with a power meter. A triple is just the icing on the cake.

Lumen · 24-08-2010 07:13AM

Have we done the AIP MEP yet?

A veritable bargain at €4k + taxes.

mloc123 · 24-08-2010 09:29AM

Chunky cranks

billy.fish · 24-08-2010 09:44AM

Lumen wrote: »

Have we done the AIP MEP yet?

A veritable bargain at €4k + taxes.

L/R EFFICIENCY analyzer

My hole it does. Without a measure of metabolic cost this means nowt (HR is not a measure of this). If they are talking about pedalling motion...the polar system does that.

Lumen · 24-08-2010 09:54AM

billy.fish wrote: »

L/R EFFICIENCY analyzer

My hole it does. Without a measure of metabolic cost this means nowt (HR is not a measure of this). If they are talking about pedalling motion...the polar system does that.

I attempted to make sense of the whole "pedalling efficiency" idea the other day but my brain hurt.

From what I recall, the argument goes that if you're pressing down on the left (front) pedal with x force whilst simultaneously pressing down on the right (back) pedal with x/2 force, you are being "inefficient" by having your feet fighting each other, and need to be "unweighting the back foot" to be "more efficient".

But then you have to factor in gravity, and that's when my brain hurts.

billy.fish · 24-08-2010 12:03PM

Lumen wrote: »

I attempted to make sense of the whole "pedalling efficiency" idea the other day but my brain hurt.

From what I recall, the argument goes that if you're pressing down on the left (front) pedal with x force whilst simultaneously pressing down on the right (back) pedal with x/2 force, you are being "inefficient" by having your feet fighting each other, and need to be "unweighting the back foot" to be "more efficient".

But then you have to factor in gravity, and that's when my brain hurts.

Think of it this way, its not so much up down as the effective power being produced at any point in the pedal stroke. Its not just the 'im pushing on bopth legs at the same time' factor that you need to think about but how and where its being applied. Its all a bit crazy TBH. Usefull mind you.

The effect of gravity is minimal, its not something i'd worry about to much until you got into massivly long cranks and the rotational forces started getting very big. That or massive cadences.

tunney · 25-08-2010 08:43AM

billy.fish wrote: »

Think of it this way, its not so much up down as the effective power being produced at any point in the pedal stroke. Its not just the 'im pushing on bopth legs at the same time' factor that you need to think about but how and where its being applied. Its all a bit crazy TBH. Usefull mind you.

The effect of gravity is minimal, its not something i'd worry about to much until you got into massivly long cranks and the rotational forces started getting very big. That or massive cadences.

Are you talking about SpinScan here?

billy.fish · 25-08-2010 09:13AM

tunney wrote: »

Are you talking about SpinScan here?

No i'm talking science. Racermate don't do science. They do things that break.

tunney · 25-08-2010 09:15AM

billy.fish wrote: »

No i'm talking science. Racermate don't do science. They do things that break.

If had assembled the veletron properly it would never have happened.

billy.fish · 25-08-2010 09:16AM

Exactly if THEY had done it right

They come pre made

tunney · 25-08-2010 09:21AM

billy.fish wrote: »

Exactly if THEY had done it right

They come pre made

Look if you throw apples and tomatoes at the veletron disc to see them get shredded then you can expect to break it.

(a veletron disc is alot like the PX discs, weighs 50lbs and is lethal)

chakattack · 25-08-2010 12:59PM

I can't really decipher the website as I don't yet speak power meter.

Will it work with campagnolo ultra torque chainsets?

I presume this would be a much sounder investment than a set of aero racing wheels?

niceonetom · 25-08-2010 01:01PM

Why aren't powermeters getting cheaper faster?

billy.fish · 25-08-2010 01:02PM

chakattack wrote: »

I can't really decipher the website as I don't yet speak power meter.

Will it work with campagnolo ultra torque chainsets?

I presume this would be a much sounder investment than a set of aero racing wheels?

Does it have an integrated spider? if so no, if not yes.

Another new PM

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