Best efforts
  1. b_knutsson 04:35, Aug. 17, 2012
  2. eivind123 04:38, June 10, 2012
  3. Samund 04:39, June 24, 2012


GPX File


Tur Tid Puls Fart Stigning Effekt Power (est) Gj. effekt/kg VAM

Velocity Ascended, Metres per hour Vm/h usually referred to as VAM, coined by Dr Michele Ferrari is the speed of elevation gain per hour in Metre per hour. This is a term used in cycling to rate how fast an individual gains elevation while climbing an incline. Ferrari also stated that every one percent increase in average gradient increases VAM by 50. For example, a 1650 VAM on a climb of 8 percent average grade is a performance equivalent to a VAM of 1700 on 9 percent average grade. Ambient conditions (e.g. friction, air resistance) have less effect on steeper slopes (absorb less power) since speeds are lower than on gentler slopes
The acronym VAM is not truly expanded in English, where many think the V stands in some way for vertical, and the M represents meters, for instance "Vertical Ascent Meters/Hour." Ferrari says,
I called this parameter Average Ascent Speed (‘VAM’ in its Italian abbreviation from Velocità Ascensionale Media).
A direct translation of "velocità ascensionale media" is "mean (average) ascent velocity" leading to an expansion of the acronym in English as Velocity, Ascent, Mean.
VAM is calculated the following way: VAM = (metres ascended x 60) / Minutes it took to ascend
A standard unit term with the same meaning is Vm/h, vertical meters per hour; the two are used interchangeably.
The relationship between VAM and relative power output is expressed as follows: [3]
Relative power (Watts/kg) = VAM (meters/hour) / (Gradient factor x 100)
This gradient factor ranges between 2.6 for a gradient of 6% and 3.1 for a gradient of 11%
To work out the gradient factor take 2 + (% grade/10)

Examples:

1800+ Vm/h: Lance Armstrong - and Marco Pantani of olden days
1650-1800 Vm/h: Top 10 / Tour de France GC or mountain stage winner.
1450-1650 Vm/h: Top 20 / Tour de France GC; top 20 on tough mountain stage.
1300-1450 Vm/h: Finishing Tour de France mountain stages in peloton
1100-1300 Vm/h: The Autobus Crew

Comment
b_knutsson Aug. 17, 2012 04:35 87.2% 14.2 km/h 10 m 54.8 W 0.9 131
eivind123 June 10, 2012 04:38 80% 15.1 km/h 33 m 131.6 W 1.8 427
Samund June 24, 2012 04:39 86.5% 15.6 km/h 35 m 149.3 W 1.9 452
Samund June 20, 2012 04:47 87% 14.6 km/h 39 m 153.9 W 1.9 489
Samund June 24, 2012 05:55 78% 12.0 km/h 37 m 117.0 W 1.5 375
Samund April 1, 2012 06:23 85% 11.3 km/h 37 m 107.8 W 1.4 348
Samund April 14, 2012 06:33 79% 11.1 km/h 39 m 109.1 W 1.4 357
b_knutsson Oct. 13, 2014 06:35 75.9% 11.3 km/h 8 m 36.6 W 0.6 73
eivind123 April 1, 2012 06:38 84.9% 10.8 km/h 32 m 88.2 W 1.2 289
Samund May 28, 2012 07:03 54.5% 10.8 km/h 36 m 102.5 W 1.3 306
Samund July 10, 2012 07:07 74% 11.6 km/h 38 m 114.5 W 1.4 320
lgar July 10, 2012 07:11 74.7% 12.7 km/h 13 m 58.7 W 0.8 109
eivind123 March 26, 2012 07:13 73.5% 10.2 km/h 88 m 202.2 W 2.8 732
eivind123 April 6, 2012 07:17 79.5% 10.9 km/h 34 m 92.4 W 1.3 280
eivind123 March 21, 2012 07:28 82.2% 9.1 km/h 34 m 78.3 W 1.1 273
Samund March 17, 2012 08:00 84.5% 9.1 km/h 39 m 87.7 W 1.1 293
lgar March 24, 2012 08:41 86.3% 8.6 km/h 38 m 73.1 W 1.0 263
Samund March 24, 2012 08:45 82.5% 9.9 km/h 40 m 105.9 W 1.3 274
eivind123 March 24, 2012 08:58 84.9% 9.2 km/h 32 m 74.8 W 1.0 214
lgar July 30, 2012 09:05 72.0% 9.2 km/h 16 m 39.4 W 0.5 106
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