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Kicker

Posted: Sat Mar 02, 2013 11:56 am
by WSG7
I want to build a 4' kicker. i want to be able to do all the tricks, (spins, grabs and flips) how long should it be and what radius?

Posted: Sat Mar 02, 2013 3:51 pm
by leapb4ulook
I'd suggest a 12ft radius for a 4ft kicker which would make it about 9ft long and give you an approximate take off angle of 38 degrees.

Tell me how fast you're hitting the kicker and I'll tell you how high you'll go, how long you'll spend in the air, and where you'll land. (As an example, if you hit the kicker at 5 m/s, which is about 11mph, you'll reach a height of 1.68 metres, be in the air for 0.9 seconds and cover a distance of 3.54 metres.)

Posted: Sat Mar 02, 2013 4:29 pm
by markbrosnan78
Are you sure that's accurate enough? :D

Posted: Sat Mar 02, 2013 5:49 pm
by snowmonco
I'll add 0.31 s after takeoff to reach maximum height, if wind speed is neglected and g = 9.81 m/s^2, and velocity components at landing of v = 3.94 î - 5.75 ĵ or modulus v = 6.97 m/s :-)

Posted: Sun Mar 03, 2013 12:51 am
by WSG7
How would you build this kicker? I was gunna just make it with the to sides as plywood cut in the right shape, but I can't do this if its 9ft long, any suggestions? Should I build it like the hales kicker?

Posted: Sun Mar 03, 2013 9:49 am
by WSG7
and if so i may as well make it 5' high

Posted: Sun Mar 03, 2013 10:25 am
by barxx
rampplans.org

Posted: Sun Mar 03, 2013 2:03 pm
by WSG7
so i made a model by making the feet into inches then timesing everything by 3. Looks good! just not sure weather to go for 4 ft or 5ft

Posted: Sun Mar 03, 2013 9:26 pm
by Ben
you could try and build it in a way which would allow you to add on the extra ft at a later stage...

Posted: Mon Mar 04, 2013 1:15 am
by leapb4ulook
If you've got the wood, and the space, and the speed for a bigger kicker, and you want to go higher and do bigger tricks, then go for 5ft high. How are you building the landing?

Posted: Mon Mar 04, 2013 4:36 am
by WSG7
Im doing a dirt landing

Posted: Mon Mar 04, 2013 4:38 am
by WSG7
Sorry to be a pain but what would the lenghth and radius best fit for a 5' kicker be?

Posted: Mon Mar 04, 2013 7:36 am
by leapb4ulook
You're not a pain. I'd go for 15ft radius.

Posted: Mon Mar 04, 2013 11:53 am
by WSG7
with a length of 10 foot?

Re: Kicker

Posted: Thu Sep 29, 2016 4:25 pm
by Mikael
That last kicker can be seen here http://drawmeakicker.com/?id=81
Exit angle is 48, not 38 though.