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post #1 of 74 (permalink) Old 03-04-2012, 11:53 PM Thread Starter
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Talking Top Speeds true or false?

With all the smart phones and apps out there everyone is getting there top speed. But I feel some people are looking a kph instead of mph b/c I have heard some people throw around speeds in the 60's. My top speed at 6'1 230lbs on an icy east coast trail was 57.5 mph. I thought that was fast untill someone half my size said they hit 63mph. So if you know your real mph top speed share it and let's have a online race. Honor system remember your only cheating yourself...HA
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post #2 of 74 (permalink) Old 03-04-2012, 11:54 PM
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theres a 5000 page post on this thats only like a week old.

check it out/search function/me lazy

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post #3 of 74 (permalink) Old 03-05-2012, 12:05 AM
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Lol last GPS track said my top speed was 1900 km/h... I love my GPS tracking software (trekbuddy stores .gpx files that I upload to garmin connect), but it has to be taken with a grain of salt. Pretty much every day I'm on the slopes I have a few corrected peaks in the 70-80 km/h range, but I don't consider it valid unless it shows a steady speed instead of just a peak.

Besides, I'm way more interested in seeing where I went on the hill, and looking at my total mileage and vert.

I wouldn't worry so much about top speed. I'm not running gates on my board (anymore) so it doesn't really matter... At the end of the day it's how dead I feel and how big the smile is on my face.
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post #4 of 74 (permalink) Old 03-06-2012, 06:39 PM
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I've tried using a handheld GPS that gave real time speed, but didn't record top speed (ie; you had to look at it on the fly). It seemed to give consistent readouts. As I recall, consistent reads were; carving a green run : 27 mph (easy to watch the GPS), carving a blue : 37 mph (harder to take eyes off run to see GPS), carving a black : 47 mph (could barely spare a glance at that speed), faster parts of the black : ?? (couldn't spare a second to look).

It matches dead on with a car's speedometer, too. Seems accurate on a plane, too. Pretty cool to see exactly where you are flying over...at 40,000 feet and 540 mph.
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post #5 of 74 (permalink) Old 03-06-2012, 07:08 PM
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Ski tracks seems to be pretty accurate\conservative in it's readings.

makingfreshtracks.com
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post #6 of 74 (permalink) Old 03-06-2012, 09:17 PM
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Some science minded guy is going to comment about how your size and weight don't matter when it comes to speed. Board length and wax matter more.


/6'2" 250 lbs, 46mph

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post #7 of 74 (permalink) Old 03-06-2012, 09:33 PM
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Size and weigh definitely matter more than anything.

Roll a boulder and a pebble down a hill at the same time and see which one gets to the bottom first.
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post #8 of 74 (permalink) Old 03-06-2012, 09:57 PM
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Quote:
Originally Posted by PanHandler View Post
Size and weigh definitely matter more than anything.

Roll a boulder and a pebble down a hill at the same time and see which one gets to the bottom first.
hmm, I wonder what the factors are. Drop them from the same level and they fall at the same rate.

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post #9 of 74 (permalink) Old 03-06-2012, 10:03 PM
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I'm not a physicist but I'd wager a gentleman's bet that a rider's weight is really not very significant; most of us can "point it" and straightline conditions that would destroy a novice rider no matter his size. Board length, snow conditions, wax, rider ability, etc., are probably all more meaningful than weight/mass.

Also, I have heard that these handheld GPS and especially the apps in your smartphone really don't provide an accurate measure of speed in three dimensions; that is, they perform reasonably accurate while tracking your vehicle speed on a (relatively) flat surface street or highway, but once you put yourself on the snowboard at a 30- or 40-degree incline its nowhere near as reliable.

Case in point I saw someone say their crazy friend hit like 73mph on a Never Summer Evo. I call bullshit on that. 73mph is approaching olympic GS speed (~80 mph) there is no way anyone on this forum is doing that on an Evo. So, take these speed things with a grain of salt.


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post #10 of 74 (permalink) Old 03-06-2012, 10:05 PM
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Quote:
Originally Posted by sabatoa View Post
hmm, I wonder what the factors are. Drop them from the same level and they fall at the same rate.
This is only true in a vacuum but I still don't think that the pebble/boulder thing is a good comparison.


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