Noob question - how do you measure size of a jump?

technically it's from the lip to furthest you can go without overshooting the jump. pretty sure that's how they're measured in ski jumping.
 
thanks all. Just an idea, maybe they(the mountain) can put a number on each jump?(They do put flags/poles/whatever to show the boundary of kicker) This could help ppl(that's not high on sth) know before they try things too big for that jump...
 
When ever I talk to someone about jumps I always specify either 20 feet to the nuckle or its 30 feet to the sweet spot.
 
im from albany, but go to school out in CNY and

all these mountains actually label the jumps with 30, 35, 40 ........

i think its more for claim than anything but they measure lip to knuckle

(the actual length of the gap) if you think about it
 
Almost always measured from lip to knuckle unless otherwise specified...

example:

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Lip of the takeoff to the knuckle of the landing. You can find the exact spot on the knuckle by taking two pieces of bamboo. Lay one on the deck of the jump and hold the other on the top of the landing. Where they intersect is the your knuckle
 
It's lip to knuck unless they're stupid. So if a jump was 35, if you knuckled you'dve gone 35 feet. If you actually clear the jump to the sweet spot, that's usually another 5 or even 10. So a 35? 40ish. a 40? 45. You get the idea.
 
you guys forgot the step where you add an additional 20-30 feet to the real number to make yourself sound more bad ass. see it all the time on here....

 
this except if you nuckle and its a step up/down it would be more because you would travel up/down as well
 
With years of experience as a park builder, I can vouch for the fact that this is correct.

Jumps should be measured from the lip of the jump to the knuckle - but define the knuckle as the start of the first point you could legitimately land without 'decking'.

Sometimes the kuckle of a jump - especially if its old - can be super rolled. Note, knuckle is the spot where the deck turns into the landing.

In the case of a very rolled knuckle, its abit of a black magic. Personally I measure right to where you could start landing it without hating your life.

Anyone that measures to the 'sweet spot' is incorrect. Anyone who guesses or uses their feet to judge is incorrect. The only time you should ever trust the length of a jump is if it was measured with a tape measure.

People almost always estimate the size of a jump wrong by eye. So when you show up at a place and everyone is all "bro, I just slayed the 65 foot-er" if you actually slayed some tape on that bitch, it'd probably be 55'.

I always refused to build jumps without tape. Guessing at the size is just plain stupid, and is the greatest way to ruin the flow of your park. Especially when building, its almost impossible to get the measurements right without some pieces of bamboo and a sweet tape measure.

 
i always figured it was the lip of the jump to the knuckle of the landing in a straight line. so you're not measuring the hypotenuse of the triangle, but rather the base.

so if it's a step down you dont measure all the distance you'd be going down as a part of the length of the jump..
 
Measuring to the sweet spot is incorrect for park jumps maybe. but for actual ski jumping (which has been around for almost 200 years longer than park skiing) the size of the jump is either measured from the lip to the furthest you can go without overshooting or the lip to the sweet spot. It is never ever measured from lip to knuckle.

also I measure a jump without a tape measure and get it +/- 6" every time. My ski is 189 cm. pretty straight forward math.
 
You actually measure the hypotenuse of the jump with respect to the knuckle? Wouldn't you just do the horizontal component so the base of the jump to the knuckle? Interesting...
 
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