just eyeball it, test runs/speed checks. and dont make it curved, you dont know enough to do it right, you dont want to pop super high and case or something. make it a nice step down cuz then all you need is a wedge shaped jump and a decent inrun and youre good
guestimate it, make sure you have room for a long inrun so if you speed check you first guess and know you are going to slow you can still hike further up. building wise build the walls anf focus alot on the corners of the lip, thats the most important part, then fill the middle of the jump with whatever, shape wise shape it with your skis just my stomping ou t the lip and side stepping up and sliding down
To become old and wise...you must first become young and stupid.
yea its nice going into a jump at x speed, knowing you will clear x gap, and hit the landing good. now air resistance, duh....but you can get a pretty good estimate leaving it out....and alot less overall work.
Like the guy above stated, you could use trig for a estimate, I think thats what some of the better maintained parks use, or you could eyeball it like the rest of it. My #1 tip for a good jump is piling the snow up, more than you think you'll need, pack it down, let it set for 15-30 minutes, then shape it.
"some times my i cum when my girl friend screams at my dick" -ndrwchrst37*
"We don't need no education"
"We don't need no thought control"
1. buy a radargun (speed)
2. look up some physics, velocity, ramp angle, projectile motion, etc...
3. calculate everything mathematically and subtract a few feet of travel for air resistance
4. do a few runs to gauge your speed without hitting hte kicker
5. hit the kicker
preferably put it somewhere with a pretty steep landing so if you undershoot/overshoot it by a little it won't matter
my best friends are all engineers, i'd just have them figure it all out.
or............ eyeball it, make judgements off of previous jumps you've hit ^^^^^^^^ is overdoing it i agree but if you wanna be safe you can go through all that trouble lol
build it in the summer with some sand/rock/clay. do a few prac runs by putting candle wax on your skis, then adjust it necessarily, and wait for the snow to fall.
then, wait for the snow to melt, so the sand becomes more compact, and you have yourself a great jump
you want to start out making a pretty flat wedge, like maybe 6 feet high at the end and 10-12 feet long for a step down. that is pretty floaty and won't throw you too high, just for starters. make sure you keep packing it down as you build. You always need way more snow than it looks like.
i dont think x speed will automatically calculate out to clearing x gap.
thats like saying going 100 km/h i would clear a 100km/h gap which first of all doesn't exist and secondly even if it was 100km gap you wouldnt make it adn you would eat sheat.
It would be more like x speedn clearing y gap... grade 6 math.
Then if you want to get fancy you can calculate gravity, air resistance, friction of snow, what the effect of gravity is on you as you get higher, angle of power, energy required, snow density, effect of albedo of snow, trajectory, min and max of jump, graph your jump, add any variables such as trees in your way, calculate the probability of an eagle hitting you while in the air, distractions (like manbearpig), and probability of your mind not being able to handle all of this while you are in the air (but i can do that for you its 100%), probability of you failing and eathing shit (also close to 100%), the speed of light while you are in the air, time dilation which occurs while you are moving, how long the landing needs to be taking into acoutn length contraction, and finally how much you will need to eat to be able to build and test the jump in order to have enough energy, and i forgot your mass at different points of the jump.
In short go to a ski hill where they may suck but at least they are already there.