Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Sun Sep 25, 2016 11:41 pm
Recently the board software has been updated and there are some known bugs/failures:
- Avatars are currently not being displayed ✔ FIXED
- Tapatalk connection is currently broken ✔ FIXED
- Avatars cannot be uploaded ✔ FIXED

Please note that we will soon do some changes in WW board template design in case to get a fully mobile/desktop responsiveness board!
If you find more errors please post it here: http://weightweenies.starbike.com/forum/viewtopic.php?f=7&t=139062


All times are UTC+01:00





Post new topic  Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Fri Aug 06, 2004 3:37 pm 
Offline

Joined: Fri Aug 06, 2004 2:46 pm
Posts: 11
Where can I find the best price on a PowerTap system?

Scott


Top
   
Posted: Fri Aug 06, 2004 3:37 pm 


Top
   
 
 Post subject:
PostPosted: Fri Aug 06, 2004 4:48 pm 
Offline

Joined: Thu Nov 06, 2003 11:24 am
Posts: 198
Location: fragglerock
can I add the same question but for SRM powercranks??? training on power is a great idea but just a bit too expensive for most.

Don't forget with powertap to add in the cost of the wheel you'll require. That 's the drawback for me.. do you put it on a crappy training wheel and use it only in winter or a decent one for racing but risk damage/increased wear in the offseason??

Ta, doozer :mrgreen:

_________________
Dance you cares away, worries for another day, dance your cares away, down at fragglerock.


Top
   
 Post subject:
PostPosted: Fri Aug 06, 2004 5:11 pm 
Offline
User avatar

Joined: Fri Dec 12, 2003 3:11 pm
Posts: 2520
Location: Frederica (Denmark)
Can I also hyjack teh thread.

How does the power kit for a polar HRM work?

how does a powertap and SRM crank work in measuring power?


Top
   
 Post subject:
PostPosted: Fri Aug 06, 2004 7:43 pm 
Offline

Joined: Sat Nov 15, 2003 4:35 pm
Posts: 465
Location: The Netherlands
The answers for the last questions can be found with google. I can't explain it in good English.

A powertap price in the netherlands is very high. It's 1299euro according to cervelo.nl which distribute the cycleops products. Maybe some shops will sell it cheaper. I am going to check that this month. I am interessted in the powertap myself.

I have seen the powertap for 1099euro in germany (rose versand).

And in America the price is 899dollar (on their website).

Do other people know what price for powertap pro is in belgium, germany or the netherlands?


Top
   
 Post subject:
PostPosted: Fri Aug 06, 2004 8:34 pm 
Offline

Joined: Wed Mar 17, 2004 8:22 pm
Posts: 109
Bontrager makes a Power-Tap wheel:
http://www.bontrager.com/roadwheels/detail.asp?id=167&pt=10

Standard: $1099
Pro: $1250


Top
   
 Post subject:
PostPosted: Sat Aug 07, 2004 10:39 am 
Offline

Joined: Sat Nov 15, 2003 4:35 pm
Posts: 465
Location: The Netherlands
Trek/VW wrote:
Bontrager makes a Power-Tap wheel:
http://www.bontrager.com/roadwheels/detail.asp?id=167&pt=10

Standard: $1099
Pro: $1250


That looks good if you like bontrager wheels.

I prefer the black powertap hub with the powertap pro computer. And then building it with 32 sapim cx-ray spokes and the Swiss R1.1 rim.


Top
   
 Post subject:
PostPosted: Wed Sep 22, 2004 8:06 pm 
Offline

Joined: Mon May 10, 2004 4:44 pm
Posts: 148
Location: All over Texas
Tippster wrote:
Can I also hyjack teh thread.

How does the power kit for a polar HRM work?

how does a powertap and SRM crank work in measuring power?


The Polar system measures the tension and speed of the chain. Chain tension in Newtons multiplied by chain speed in meters per second gives Watts of power. The chain tension is measured by the chain's frequency of vibration, hence the need for chain weight and length between the gears. The sensor functions like an electric guitar pick up. An application specific integrated circuit or PIC derives tension from the frequency of vibration and filters out all but the fundamental harmonics. Depending on functions requested, processiing takes between 2 and 4 seconds.

PT and SRM work by measuring torque. Torque in Newton Meters multiplied by rotational speed in radians per second (2 pi radians per revolution) gives Watts of power. In each, there is an element which all torque is transmitted through. On this element is a strain gauge which measures the elastic response of the element to torque and represents it as a change in resistance.


Top
   
 Post subject:
Posted: Wed Sep 22, 2004 8:06 pm 


Top
   
 
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 7 posts ] 

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Cannondale OPI Spiderings 52-36 - best price?

in Road

mattharrop

4

380

Sat Jul 16, 2016 12:37 am

Hapsmo911 View the latest post

There are no new unread posts for this topic. Please delete - Lowered price

in For sale - Pictures are mandatory 22-3-13

gfeldy

0

232

Wed Aug 17, 2016 2:17 pm

gfeldy View the latest post

There are no new unread posts for this topic. FS: Fizik Arione R3 *price drop*

in For sale - Pictures are mandatory 22-3-13

emorydptt

0

114

Sat Sep 17, 2016 9:01 pm

emorydptt View the latest post

There are no new unread posts for this topic. Ritchey Swisscross 54 price drop

in For sale - Pictures are mandatory 22-3-13

toride

0

314

Sat Aug 20, 2016 9:41 am

toride View the latest post

There are no new unread posts for this topic. ***SOLD**** DMT R1 42 shoes - price reduced

in For sale - Pictures are mandatory 22-3-13

3delis

0

146

Tue Jul 26, 2016 6:46 pm

3delis View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: No registered users and 2 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:  
Powered by phpBB® Forum Software © phpBB Limited