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Tacx Fortius Wired to ANT+

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Written by Administrator
Created: 28 January 2018
Last Updated: 28 January 2018
Hits: 6017

I have an old T1942 Tacx trainer that has a wired USB connection.  To make it work, I wrote some code to convert the measurements (wattage, speed and cadence) from the Tacx Fortius to ANT+ format and transmit them out an ANT+ stick.    It compiles and runs in Linux but you can run it in a VM or on a $10 Raspberry Pi Zero.

 

So, you will need an extra ANT+ dongle (for a total of two) and either a VM (Virtualbox or VMWare player running Linux) or a Raspberry Pi. 

https://github.com/pepelkod/AntBridge

 

I plan to add a Raspberry Pi image complete with compiled code and auto start in the near future.

 

 

Cognoscenti Cycles

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Written by Administrator
Created: 01 December 2017
Last Updated: 01 December 2017
Hits: 5077

A Canadian wheel builder with a fine balance of artistry and utility.

http://www.cognoscenti-cycles.com/

 

 

Spoke Tension howto video

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Written by Administrator
Created: 28 November 2017
Last Updated: 28 November 2017
Hits: 5150

 

Shows how to use the spoke tension app.

 

 

Quick Spoke update

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Written by Administrator
Created: 27 November 2017
Last Updated: 27 November 2017
Hits: 4649

Update to the spoke length calculator Quick Spoke is submitted.  It has a new database of hubs and wheels, some layout and bug fixes and of course works with the latest iOS.

 

 

Spoke Tension Calibration

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Written by Administrator
Created: 26 October 2016
Last Updated: 26 October 2016
Hits: 5359

As part of my new release I wanted to verify that my reading were accurate.  I used a Park TM-1 in the past, but the precision on the TM-1 is in units of 10 kgf or more, and the accuracy of one that is several years old and has been tossed around in a tool box is suspect.  So I built a custom tension calibration rig.  The idea is to measure the tension directly using a hanging scale, then use that to calibrate my app, and my TM-1 while I am at it.

Here is the picture so you can see what I am talking about.

First, with no tension on the spoke, the hanging scale is zeroed (tared).  Then the spoke is tensioned to a set amount (115kgf in this case). The reading on the TM-1 should match, if not adjust the TM-1.  In my case the TM-1 was off by about 10kfg.  I adjusted and it matched the app much better than before.

After calibrating my TM-1, I tested the app performance and verify that the reading are accurate. \

Overall a useful tool for a shop or anyone who is building large quantities of wheels.

 

  1. Spoke Tensioner update submitted.
  2. Spoke Tensioner Update is underway
  3. Space Mold Trailer on Youtube
  4. Electric Ring of Death

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