Mont Ventoux Power calculation

ric_stern/RST

just to clarify, we coach a wide range of people from recreational/fitness, sportif riders, amateur racers, elite racers, and pro cyclists, as well as other sports such as triathletes, and paralympians. so, please don't worry that you're not a pro.



it's from the 30th june. i can scan the paper and email the image (if you email me your email addy)

cheers
ric

__________________
http://www.cyclecoach.com

2laps

You can send your paper to this email
btw went to your site and i suppose i would fit the recreational/fitness, sportif riders profile for which you provide a team coaching(?) but as an individual. Still i'm not quite sure if this is my cup of tea. have to think about it

greets
peter

Watoni

Well, as someone who does not have a power meter but trained this year on a trainer (Cardgirus), I can guess that you should get quite low gearing.

I rode an organized century in June that climbed Mont Ventoux from Bedoin and then again from Sault (longer, but easier) for about 106 miles and 12,500 feet of climbing. I rode the climb in somewhere around 1:35 (where in Bedoin do you start the clock?) and rode a few days later in 1:29. I used a 34X23/26 for most of the steep section from the first hairpin after St. Esteve to Chalet Reynard, and did not hesitate to use a 34X29 on some occassions.

When you are fresh it is not so bad since the climb never hits more than about 12% but it is relentless after St. Esteve for 10km, and then gets steep again after Chalet Reynard. Also, I was lucky enough to miss the mistral that was prevalent that week. Good luck!

2laps

Hi Watoni, i'm wondering if your trainer (Cardgirus) gives you some power values? You say you use a 34x(23-29) is that a tripple? I don't have a tripple, so i was thinking of using a 39x(23-29) in the hope of getting there.




I still have to do my first climb. The goal is to climb from Bedoin, from other peoples journals there is supposed to be a fountain with a start line on the road that would be my starting point for the clock.



It is not so bad since the climb never hits more than 12% your joking right!?
Fear creeps in my legs. By the way, congrats on your time 1:29, hope i can do it in 2:00

franco1

Hi 2laps

I'd like to ask you some questions on you Tacx Flow.

I've just purchased mine on Friday I've always had the tacx speedmatic, but wanted to add power training into my training as my road bike has it but doesnt work on my trainer.

Firstly tonight I'll start playing around with it and from tommorrow use it for training. So sorry if my questions sound stupid.

1. Do you simply start riding and then it automatically start to record the data or do you have to "start it" somewhere.

2. Do you leave the power connection on the whole night or do you disconnect the power after your sessions.

Thanks

2laps

franco,



You only have to plug in the power and you are ready to ride.
However, it does not record data for later use (there is no connection for a computer ) it does show you the current speed, cadence, watts etc.



I always disconnect the power after my sessions. There is no reason why you should leave the power on (data is not stored so you can not loose it)

Phil Stone

If you want the Ventoux experience we have it as a Real life video http://www.tacx-video.com/DV2004Ventoux.htm Its the Sault & Malaucéne side (they were laying new tarmac on the Bedoin side which joins the Sault road about 6km from the cloudy top). There is a little bit of low res wmv video on the Tacx site (VR trainers).

You would need to upgrade the flow with a USB adapter to turn it into an i-magic. Once you have that you can calibrate it with a Powertap or SRM to make it more accurate.

We use virtual speed which is calculated from your total mass (you & bike), power & grade so your time will be close to real life if your power is calibrated, even though your wheel speed could be much higher then what you see on the PC.

The actual profile is hard linked to the video so as you grovel along those steep sections the video slows down with you. This is the only ride Ive not been able to finish yet .

As for the flow's accuracy make sure its had a really good warm up before doing the calibration test with it. I can say the new Fortius & Cosmos when calibrated will match the SRM spot on at all power outputs.

Rick you can always email me with anything you want translated I live in Belgium also.

Regards

__________________
Phil Stone

www.tacxvr.com
www.tacx.com

franco1

Thanks for the reply.

Last night I used my "flow" for the first time and I've got another few questions to ask you if you dont mind.

Firstly I when I switched it on and went to set up I could'nt see my weight. I only saw the last digit.

And I didnt see the "km" sign either did see the Mile one.

Also when I started training and tried to alternate between Gradient and Power I couldn't see the power,only saw the last two numbers. Saw +90 not 190W or 290W

And lastly where do you see the number of Kcal or Kjoules burnt during the session?

What I've done is I've returned it to the shop where I've purchased it as I think there is a problem on the head unit.

Thanks
Appreciate the help.

2laps

hi franco, some more questions hé



If you plug in the power you should see the following:
left top corner: frequency(50/60hz) next to it voltage(110/220V)
next rule below:software version number ( p28 or something like that)
next : scale factor (default 100)
next : body weight ( 75 Kg)
bottom line : speed unit (Km or Mi) ont the right Kjoules or Kcal

if you want to see the speed in Mi you should press the SET and MODE buttons until SETUP appears on the screen with the arrow buttons you should be able to alter the weight in steps of 1 Kilo. Press MODE to enter the value (Kg is the only weight unit). After this you should see the speed blinking, again press the arrow button to change this in Mi. MODE to enter.
Next you should see the Kcal/Kjoules. repeat the same procedure.

If you only can see the last digit of your weight you've got a problem.
-check: you can only enter weight between 40 - 120 Kg
-check: are your cable contacts not corroded
-check: temperature should be between: 5 - 35 C or 40 - 95F



Well, eh, i think you do have a problem with your display



You can only see your Kcal burnt if you are wearing a hartrate belt. If you press the MODE button the first line should show you the right numbers.
Did the shop gave any comment on your head unit