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Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

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Old 02-12-12, 08:44 PM   #1
waynesulak
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The ultimate tandem power meter

There is a power meter in development that would be installed between the cleats and the shoes. There is also a transmission unit that is attached to the top of the rider's shoes. If they can get this to work it would be perfect for tandem riders. To use it on your single all you have to do is use the same shoes.

The website link is below. There is a no obligation preorder page that I suppose they are using to gauge the market and possibly raise money.

http://www.brimbrothers.com

Wayne
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Old 02-12-12, 10:34 PM   #2
Ritterview
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There are places you can pre-order the tandem compatible Garmin Vector pedal-based power meter, whose retail introduction is nigh (reputedly, March).
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Old 02-13-12, 07:25 AM   #3
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I'm calling BS on this one. Maybe it's just marketing, but the claim that you can just jump from bike to bike is bogus. Pedal/cleat based systems have to know crank length to convert torque to power, so unless they're suggesting you can jump from (pre-programmed) bike to (pre-programmed) bike they're missing some key data.. Cleat-based systems in particular are going to struggle with not knowing crank and pedal position.
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Old 02-13-12, 12:10 PM   #4
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Originally Posted by p2templin View Post
I'm calling BS on this one. Maybe it's just marketing, but the claim that you can just jump from bike to bike is bogus. Pedal/cleat based systems have to know crank length to convert torque to power, so unless they're suggesting you can jump from (pre-programmed) bike to (pre-programmed) bike they're missing some key data.. Cleat-based systems in particular are going to struggle with not knowing crank and pedal position.
I am no expert but it seems to me that you make a good point about crank length. Then again I use the same crank length on all my bikes. I can however see where it could be a problem for a lot of folks.

Wayne
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Old 02-14-12, 05:29 PM   #5
Ritterview
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About that Garmin Vector in March. Not so fast. It's delayed until Summer.
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Old 02-15-12, 07:09 AM   #6
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Originally Posted by p2templin View Post
Pedal/cleat based systems have to know crank length to convert torque to power, so unless they're suggesting you can jump from (pre-programmed) bike to (pre-programmed) bike they're missing some key data.. Cleat-based systems in particular are going to struggle with not knowing crank and pedal position.
I can envision where an accelerometer could determine crank length and position without the need for programming.
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