candy mountain yipeeee

pdxmonkeyboy · Wed Nov 12, 08 10:50 pm **candy mountain yipeeee**

it is done. Kudos again to Kacey for the barrels and the help!!

Chooch · Wed Nov 12, 08 11:01 pm

Hell yeah MB! That thing came out wicked pissa! Thanks for heading up the design/build on that beast. Best part is that it so light 2 guys can easily carry it down to the water Cool

Thanks for coming by with the barrels and lending a hand on the build Kacey (STICKS). First session on Candy Mountain is this Saturday. Twisted Evil

genek · Since 21 Jul 2006 2165 Posts East Po KGB

Damn guys! That thing looks badass! Almost has me wishing I wasn't in Padre. Not sure if I'll have wind tomorrow anyway.

forrest · Thu Nov 13, 08 7:03 am

Have ya'll tried floating that the kicker yet?

wakeup · Since 11 Sep 2005 328 Posts always Obsessed

forrest sees it
it'll prolly tip over
yall need one more barrel to make a tripod
turn the two barrels in the back sideways and put them on the outside of the frame
you will prolly need a sturdy piece of framing over these, as all the pressure will be going up
curve looks good
similar to kicker at real

chanson · Since 31 Jan 2006 1874 Posts WISCONSIN Chimey

Nak · Thu Nov 13, 08 8:35 am

As far as ballast, you could put drain valves on the barrels. Once it's in the water, let some water in. Drain the water to carry it. (You'll need two valves per barrel, one high, one low.) If you do this, you might consider some kind of foam in the barrel for flotation. (So it can't be accidentally sunk if you leave a valve open...)

It does look a little tippy. As you go off the top of it, force will be applied to a fairly long lever. It seems like the slider would rotate about the barrel on that end?

forrest · Thu Nov 13, 08 8:41 am

Another barrel and a little 6 inch deep bath tub mounted above the barrels were they can just bucket water into for weight would do the trick.

pdxmonkeyboy · Thu Nov 13, 08 9:10 am

As it stands, the ramp has a positive flotation of about 810 lbs. (440 lbs per barrel minus the weight of the ramp which is about 70 lbs). In order for the ramp to sit in the water properly, the barrels will be more than half full of water. probably about 3/4 full really.

So that would mean that the each barrel will have a ballast weight of around 300 lbs.

My thought is that the since the flotation is right inline with the flotation (i.e. your never going to be "outside" of the barrel when your on the ramp, that it wouldn't tip. But I guess in theory that if you were going off the very corner of the ramp, you would be applying a force to the "edge" of one barrel and the flotation on that point is only a fraction of the total bouynacy of the barrel.

In terms of rotating on the front barrel as a fulcrum, the ramp is long enough that that won't be a problem. I was standing on the tippe top of the ramp yesterday and it was solid.

I guess the only way to find out is to get it in the water and try it out.

I think the easiest way at this point to remedy the tipping would be to weld some outriggers on the front (or middle) and then just sink a bucket on the end of each outrigger. Kind of like the dolphins that fishing boats put in the water to help alleviate roll in high seas.

Any thoughts?

Knot Kracker · Since 02 Jul 2008 130 Posts Clackamas River Stoked

I have an extra metal barrell that was used for landscaping. It is heavy with one
plug if you want?

forrest · Thu Nov 13, 08 11:34 am

Water in the barrels will do it, sorta, but it's going to be a HUGE pain in the ass and the water will slosh. I say you modify it to be a tripod (3 barrels, 2 in an outrigger config), and then if you still need to add water, you would do it only to those two.

The heavier it is, the better hits are going to be. At 70 lbs, it's going to be dancing around underneath you and be super dangerous.

chanson · Since 31 Jan 2006 1874 Posts WISCONSIN Chimey

If we can get another barrel I say lets do it..
forrest, joby and those guys session the HR kicker all the time..probably shoudl take some advice from them..

The one thing I was wondering...how do you fill, unfill, re-fill the barrels w/o it being a pain in the ass.. (was thinking this last night)

So do the barrels in back go on the outside of the frame..?
Couldn't we just use some tie-downs and crank the barrles tight to see what works best before we weld anything else..?

We could experiement on Sat. with all options...but, it looks like an Easterly..

pdxmonkeyboy · Thu Nov 13, 08 11:51 am

forrest · Thu Nov 13, 08 11:53 am

I think you're going to have to widen the base on that thing though. My guess is that it flips over just sitting on the water. You know that two barrel dock thing I made for moving the slider? You can even sit on that thing without it wanting to flip.

Goto car washes, that where we get barrels sometimes. They usually can't get ride of them. Just drive around while the attendant is there, or call their numbers they have listed.

The straps would work okay, just don't put it in deep water incase one breaks.

The water sucks cause those caps have to be tightened down real hard or they leak. Also, just moving the thing back out of the water is a nightmare. One of those barrels full weights 550 lbs. Channel lock plyers seem to work for torquing that cap down.

alien · Since 01 Aug 2006 114 Posts Portland Stoked

I have a barrel or two I can donate. Won't be back in town until the 18th though.

forrest · Thu Nov 13, 08 11:57 am

If you could section the barrel so that water would only stay in the bottom half of the barrel, it would be fine. Once the ramp starts to tip, that water is just going to stay put while the mass of the ramp rotates around it.

The force is only applied for a short amount of time, but it's a lot of force. Our kicker takes 6 dudes struggling to carry. I have no idea how much it weighs. If I go off it cock-eyed, it tilts, my board slips out off an edge and I end up on my back or on my face.

Why don't you weld some legs and make it non-floating. Solves the problem real quick.

wakeup · Since 11 Sep 2005 328 Posts always Obsessed

ask forrest but we might have a barrel yall can have
and the reason our kicker is a little tippy right now is because one of the barrels is 1/3 or more full of water. it is solid enough to stand on the top of when set up properly.

the problem isn't the amount of flotation it is the placement of the barrels
imagine putting bicycle with huge inflatable tires in the water, even if no one is on it, it will still roll from sided to side

the out rigger idea is what you need, we built our first kicker back in 03 like that. it puts the barrels into a tripod formation, which will help to alleviate any side to side roll. might as well put them under the high side since that is where the majority of the weight of the ramp is

you DON"T want to start adding water. by adding water you are reducing the amount of buoyancy. you want the buoyancy to keep it solid.(so it doesn't sink a little as you hit it, takes away from your pop) using ratchet straps to raise or lower the barrels is pretty effective. or you can do the displacement calculation and you will know where they need to sit
do make sure that your caps are screwed on tight. we have had a couple of issues with an ounce a day leak which adds up to gallons after a few months

if you are good with math and calculations, there is a displacement formula on wikipedia under buoyancy or something like that. if you no the weight of your ramp, you can calculate how much of the barrel will need to be below the water line for proper flotation. there is also a center of gravity formula on there also, if you feel like that is an issue