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TruSail: training analytics

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Peaky View Drop Down
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Post Options Post Options   Quote Peaky Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 19 at 6:00am
Iíve often thought it would be nice to have a heated tiller extension. Could kill two birds with one stone - warm hands if you keep it flat, a rude awakening if you donít!
I agree Mozzy. For example, how many people know how much speed they lose through a tack and how much that could be improved by optimising turn rate (tiller use), roll angle etc. It would be a great training tool for giving quantifiable feedback and improving consistency.
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Post Options Post Options   Quote 423zero Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 19 at 7:14am
Alexa tell me when I am not flat

Edited by 423zero - 08 Jan 19 at 7:14am
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sargesail View Drop Down
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Post Options Post Options   Quote sargesail Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 19 at 8:11am
So do you actually think this would make you faster? Or is it a question of achieving training efficiency: getting to the 10000 hours mark earlier?
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Peaky View Drop Down
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Post Options Post Options   Quote Peaky Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 19 at 8:32am
My opinion is that only by measuring inputs and outputs you can a. Find the best technique b. Measure how well and consistently you apply that technique and c. Share that technique unambiguously with others. So yes, you could be faster and yes you could more quickly get 10000 useful hours of practice.
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Post Options Post Options   Quote mozzy Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 19 at 9:30am
I think it's a lot about training efficiency. Doing a two boat tuning run can take hundreds of iterations to have confidence in your findings. And conditions change so much it's hard to actually repeat the same tuning run twice. I don't think any amateurs do even a tenth of what is required to learn anything conclusive from this type of training (that's not say it isn't effective for other reasons). 

If you're lucky you'll have a coach following with a camera and from this you can start to see differences. But this feedback comes hours after the run was done, by which time you've lost that sensation of how it felt. To see on a display, or have headphones on and have a coach tell you what the immediate impact of your changes are would speed up the whole process immensely. 

So basically, it's more precise feedback on what you're doing and it's more timely. Which speeds up the learning process. 

But, like power meters on bikes, not only does it speed up learning, but it also could enable you to learn things which you couldn't have possibly known without the sensor. A few years with good data collection and the clever people will start seeing patterns which can tell you things about the known unknowns and even find the unknown unknowns. 

I wouldn't like this to become part of racing, I think that should be done on feel. But i'd love to use this stuff in training. 

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Post Options Post Options   Quote Gordon 1430 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 19 at 9:43am
I found the first time I put a camera facing aft on the boat so I could see horizon and transom bar really made me realise what I thought was flat wasn't. I now work much harder at that but bet I am still not flat 70% of the time.
Sailing in waves should you be flat to the water your on or flat to the horizon as a general rule?
My thought was to the water your on but thought I would check

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mozzy View Drop Down
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Post Options Post Options   Quote mozzy Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jan 19 at 11:09am
Peters & Sterritt 49er Team

"Since November we have been training down in Vilamoura with the rest of the British 49er squad, testing and racing on the equipment we will be using at this years big Regatta's. We're excited to be using Trusail's telemetry system to really dive into the details of what it takes to make a 49er go fast. There is a huge amount that data can tell us and we'll be sharing some of our findings on here for those who are interested.

Up next is the Miami WC with the first race on the 29th of January. Looking forward to measuring ourselves against the rest of the World!"

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Post Options Post Options   Quote gonesailing Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 19 at 10:25am
Hello!  I love cycling, powermeters and cycling software like Strava, Garmin Connect, etc.  I'd like to have advanced analytics for sailing too but I wasn't able to find anything.  So I made my own 1/10th second resolution GPS and purchased wind sensor with built-in inclinometer.  Now I'm working on software for data analysis.  If anybody has good ideas for it, I'll happy to listen :)
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Post Options Post Options   Quote MerlinMags Quote  Post ReplyReply Direct Link To This Post Posted: 22 Feb 19 at 3:03pm
I worked on an inclinometer app two years ago, just testing an idea. I'd be interested to hear how you go on, and whether the results were able to be presented in a useful format.
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Post Options Post Options   Quote gonesailing Quote  Post ReplyReply Direct Link To This Post Posted: 23 Feb 19 at 7:31pm
I'm using my own track format.  It allows to store GPS coordinates, wind data and heeling angle in compact way.  App can export data in CSV format for applications like Excel.  I can publish native format description if you are interested.
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