HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 1463 posts ] 
Go to page Previous  1, 2, 3, 4, 5, 6, 7 ... 98  Next
Author Message
 Post subject:
PostPosted: Sat Feb 28, 2009 7:47 pm 
Offline
in the industry

Joined: Wed Jun 22, 2005 11:45 am
Posts: 5
Location: Dublin
Sorry we can't be more specific yet about what we're doing, but it's very interesting following the debate about what our technology might be. Some good points being made.

If you want to follow our progress use the facilities on our website. If you want to have your input into our design decisions be sure to complete the online survey (link from the website). Don't wait too long - the survey closes on Monday 1st March.

Edit: That should be Monday 2nd March.

_________________
Brim Brothers - Sports power meters
http://www.BrimBrothers.com


Last edited by Barry on Sat Feb 28, 2009 10:11 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
Posted: Sat Feb 28, 2009 7:47 pm 


Top
  
 
 Post subject:
PostPosted: Sat Feb 28, 2009 8:41 pm 
Offline
User avatar

Joined: Sun Dec 28, 2008 10:15 pm
Posts: 1144
Location: Hungary
My cheap solution would work with simply measuring speed and gradient (both very easy) and wind speed. The latter seems to be the hardest and most expensive to do, but surely it can be done somehow, and all this combined should give a good power estimate.


Top
 Profile  
 
 Post subject:
PostPosted: Sat Feb 28, 2009 8:48 pm 
Offline
Shop Owner

Joined: Sun Jan 08, 2006 9:12 am
Posts: 2194
Location: Alto, NM
That would be an iBike.


Top
 Profile  
 
 Post subject:
PostPosted: Sat Feb 28, 2009 9:10 pm 
Offline
User avatar

Joined: Sun Dec 28, 2008 10:15 pm
Posts: 1144
Location: Hungary
rruff wrote:
That would be an iBike.


Oh, so I invented something that already exists. Again. :|


Top
 Profile  
 
 Post subject:
PostPosted: Sat Feb 28, 2009 9:32 pm 
Offline

Joined: Wed Jan 10, 2007 5:35 pm
Posts: 291
ave wrote:
My cheap solution would work with simply measuring speed and gradient (both very easy) and wind speed. The latter seems to be the hardest and most expensive to do, but surely it can be done somehow, and all this combined should give a good power estimate.

Gradient and wind speed won't help much indoors, where do I most of my wattage work...easier to control variables.


Top
 Profile  
 
 Post subject:
PostPosted: Sat Feb 28, 2009 10:35 pm 
Offline
User avatar

Joined: Mon Dec 01, 2003 12:35 am
Posts: 1474
rruff wrote:
J-Nice wrote:
Precisely... the market for these things is in the hundreds of millions. How many people are "serious" recreational cyclists? You can also get a viable PM for $350... is that too high? How cheap does it need to get?

If you think there is an untapped market, then please give it a shot.


I don't understand why you are so vehemently defending this particular point.

If the Brim Brothers can produce a power meter that is an improvement over other systems AND is a bit cheaper, they will infiltrate this market share, small as it may be. That only makes sense.

Two points-

1) The technology for these SRM units isn't so complicated that it warrants the high prices.

2) Just because people pay it doesn't mean it's worth it. There is a big difference between the two concepts.

_________________
Check out the latest controversies in sport-

http://berzin.blogspot.com/


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 12:11 am 
Offline

Joined: Sat Dec 13, 2008 6:28 pm
Posts: 131
Location: San Francisco
I've concluded that money spent on a power meter is much more effective than money spent on lightweight parts. A couple months with any power meter and you'll be way faster than you would be with the same amount of money spent on lightweight parts. I'm a power weenie now.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 1:03 am 
Offline
User avatar

Joined: Wed Nov 15, 2006 10:01 pm
Posts: 2914
Location: london
hence why i bough an srm and not some bora 2's.
tikka



ps likely ill get some later in the year :)

_________________
:)


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 1:07 am 
Offline

Joined: Tue Apr 22, 2008 11:53 pm
Posts: 411
isn't it just about coffee shop pose ? :wink:


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 1:43 am 
Offline
User avatar

Joined: Tue Apr 18, 2006 3:03 am
Posts: 1797
Location: Islip, NY
STARNUT wrote:
sure.

PMs work with starin gauges and bathroom scale work with strain gauges.

I have a bathroom scale the gets down to .01 lbs and it cost me $70. I have a PM that measures down to the .01 ft/lbs and cost $4000. One was manufactured in Germany and one was manufactured in Asia. Granted, the PM does velocity as well but so does a $40 cycling computer.

Starnut


You have a bathroom scale that does 0.01lbs? Mine does tenths.

Another thing to consider about PM is that you need 0.01 accuracy over a much higher range. No bathroom scale I know of reads 2000lbs with that kind of accuracy. I'm no expert, but I think that proper strain gauges like the ones used in an SRM are the biggest cost. I don't pretend to know this for sure. I'd like to hear an answer to that from someone more in the know.

The other factors such as reliability, spinning gauges, waterproofing, and battery life are also added in there.


-Eric


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 2:14 am 
Offline

Joined: Thu Feb 12, 2009 6:00 pm
Posts: 16
You'd need a bathroom scale that could measure not only force down but force forwards, backwards and up, to measure force put on the pedals in those directions.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 2:16 am 
Offline
User avatar

Joined: Wed Sep 26, 2007 1:57 pm
Posts: 7311
Location: San Francisco, CA
On the other hand, if a power meter were being used in a Mil-spec application, how much would it cost? Obviously the cost of hardware is a small fraction of commercial power meter cost.

Also -- "just because people pay it doesn't mean it's worth it?" This is a semantic statement, but that said, I thought given the assumption of rational consumer willingness to pay is essentially the determent of "worth". If I buy a bagel at the airport for $1.50, it's because it's worth $1.50 for me at that time, and the option of going downtown to get a $0.50 bagel, or better to get wheat flour and bake my own, are less favorable.

Likewise, were I to attach a $70 bathroom scale to my bottom bracket, that's be pretty silly.

_________________
http://djconnel.blogspot.com/
Fuji SL/1
Selling SPD-SL 7900 pedals: 248 grams


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 4:24 am 
Offline
Shop Owner

Joined: Sun Jan 08, 2006 9:12 am
Posts: 2194
Location: Alto, NM
ave wrote:
Oh, so I invented something that already exists. Again. :|


Just a few years too late! They've finally gotten to the point where it works pretty darn well.


Top
 Profile  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 4:29 am 
Offline
Shop Owner

Joined: Sun Jan 08, 2006 9:12 am
Posts: 2194
Location: Alto, NM
mds wrote:
I've concluded that money spent on a power meter is much more effective than money spent on lightweight parts. A couple months with any power meter and you'll be way faster than you would be with the same amount of money spent on lightweight parts. I'm a power weenie now.


Funny... it hasn't done a damn thing for me except give me some objective feedback... which is nice. I already was pretty good at pacing. On the other hand light parts won't do much either.

How has it made you faster?


Top
 Profile  
 
 Post subject:
Posted: Sun Mar 01, 2009 4:29 am 


Top
  
 
 Post subject:
PostPosted: Sun Mar 01, 2009 4:41 am 
Offline
Shop Owner

Joined: Sun Jan 08, 2006 9:12 am
Posts: 2194
Location: Alto, NM
ergott wrote:
The other factors such as reliability, spinning gauges, waterproofing, and battery life are also added in there.


Even more importantly, many don't seem to realize that the R&D, manufacturing and packaging start up, software, and marketing costs are close to being the same regardless of how many units you sell. In other words there is a very big investment to get going relative to the potential market. If there was a good chance that you could sell a few million of them, then of course you could produce a top quality unit like an SRM and sell it for <$1000... exactly how cheap I don't know. But when most people consider a $80 bike at Walmart to be just fine, it simply isn't going to happen.

Currently I think the wired iBike Pro ~$350 or so on sale is the best you can do at the low end of the scale. I don't expect anything to come along that works better than this for less money... at least not any time soon.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1463 posts ] 
Go to page Previous  1, 2, 3, 4, 5, 6, 7 ... 98  Next


Who is online

Users browsing this forum: Bing [Bot], Bonefish, maxxevv, tigoose, Yahoo [Bot] and 29 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Cervélo 2014 - Rumours / Details?

[ Go to page: 1 ... 15, 16, 17 ]

in Road

BikeTart

252

43312

Fri Jan 24, 2014 6:55 pm

sebo2000 View the latest post

There are no new unread posts for this topic. Powermeter choice - Vector or Rotor power crank

in Road

greenplay

13

2032

Mon Oct 21, 2013 11:35 pm

HammerTime2 View the latest post


It is currently Sat Apr 19, 2014 5:55 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB