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gymslackerclimber
May 8, 2005, 4:09 AM
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I am planning on making an Aframe some times soon, going to Indy 500 here soon and i want to bring a portable system, (last years indy i rigged up my line through my car,,, yes through my cars back windows, it was great for the first step then i shattering my window in my door pannel,,,, oh well , learning experience...
So i am wondering if there were any recomendations to anything about the construction of an aframe...? thinking about 4ft hi, screws not nails? thanks.
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theishofoz
May 8, 2005, 4:31 AM
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use lag bolts, they are beefier and will last longer.
good luck
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slackdaddy
May 8, 2005, 4:58 AM
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Check out the book" Walk the Line, the Art of Balance and Craft of Slackline". It tells you everything you need to know about a very solid and simple A-frame. No lag bolts, screws or nails required.
"Walk the Line" is availible at slackdaddytools.com and some REI stores. If they don't have it at the REI near you, then ask for it.
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skymeat
May 8, 2005, 5:14 AM
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I just made a triangle and bolted it together. It was really that simple. 2x4's and 3/8"x4" bolts, 2 washers for each bolt(one on each side), then a nut on the end. I can put em up or take them down in about 5 mins. They cost me 16.75$ for two, and that included a drill bit. I got a little creative from there, I added a smooth surface for the line to sit on, teflon bushings on another bolt :righton: But the original design worked well, I just tinkered for s**ts and giggles.
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musicman
May 8, 2005, 5:33 AM
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how exactly does an A Frame work? i've heard people talk about them before but i just can't seem to comprehend the mechanics of it. sorry if i'm "stealing" the thread, or its "thread drift" but i'm just curious, and figured it would also help with the "how-to" part of the thread.
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skymeat
May 8, 2005, 5:56 AM
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I didn't get it either. It didn't look like it would work, I didn't think it would work but I saw pictures of it working...And it is the way to go.
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areyoumydude
May 8, 2005, 4:35 PM
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If you want portable A-frames the one described in "walk the line" is the way to go. You can take them apart. Making it easier to fit in your car. "Walk the line" is a must for anyone into slackline.
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mr-pink
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May 8, 2005, 5:02 PM
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You mean a a-frame like for a bed?
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gymslackerclimber
May 8, 2005, 5:48 PM
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ok thanks everybody, i am goiong to get the book, probably just order it, i guess i need to check out slackdaddytools.com. !
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slackdaddy
May 9, 2005, 5:26 PM
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There are right ways and wrong ways to use A-frames.
In an A-frame set-up you have a slackline and one descending line for each A-frame. The "magic" part of a good A-frame set-up is the fact that the slackline and decending line are both tied to the A-frame, allowing the A-frame to move with the stretch and bounce of the line. If you use your slackline for the descending line by just running your slackline over the A-frame, the A-frame will fall over when you walk too close to it.
The use of a ladder or sawhorse is naive and dangerous. One of the problems with a stationary point like this is the same problem I encountered when I tried to build a tripod. My tripod was solid, but as my line went over the top, it would slip with the stretch of the line. To remedy this I made my descending line out of cable. This was better, but there was still a tiny bit of movement, and that bothered me. (To achieve the total awareness that good slacklining requires is to be aware of all these things.)
I realized that in a slackline situation, a tripod would have two legs in compression and one leg in tension, so the third "leg" did not need to be solid. Shortly after this I built my first A-frame. I have tried other designs but I most often use the same design I first made in 1989, the same design that is in "walk the Line".
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skymeat
May 9, 2005, 5:35 PM
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Slackdaddy....What do you mean by desending line? Are you talking about a line to stabliize the frame, or a line to get yourself up on the frame?
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areyoumydude
May 9, 2005, 5:40 PM
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The desending line is the webbing or rope that you use to anchor the A-frame to the ground.
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skymeat
May 9, 2005, 5:44 PM
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Humm. I didn't anchor my frame to the ground. Is this something that needs to happen? It nas never slipped, it moves gently when on the line...
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areyoumydude
May 9, 2005, 5:46 PM
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What do you have it anchored to?
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slackdaddy
May 9, 2005, 5:48 PM
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Skymeat,
The A-frame holds the line up off of the ground, but something must hold the A-frame (the descending line). The descending line goes from the top of the A-frame down to, or near the ground. You could tie the A-frame's descending line directly to the ground with dirt anchors (also covered in "Walk the Line"). Or you could tie the descending line to something that may not be strong enough to tie to the top of, but because of reduced leverage you can tie to the bottom of, such as a fence post.
I hope this helps.
(nice name by the way)
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skymeat
May 9, 2005, 5:48 PM
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I just fastened my line to the ground, and tightened it. then slid the frame up under it. It's not fastened to anything. It's just held in place by the tension of the line...
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slackdaddy
May 9, 2005, 5:58 PM
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Slipping the frame under the way you have works, but sometimes the frame can fall over especially if you walk right up to, or on your A-frame. This is why I have a seperate desending line.
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gymslackerclimber
May 9, 2005, 8:21 PM
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Registered: Feb 22, 2005
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i just made my first aframe and i rap the webbing one time around the center of my aframe, just like the frames on slackline.com, then binered to a webbinb ancor that loops around the toe hooks on my Jimmy, but by rapping the webbing it eliminates the possiblity of frame slippage,, right? the only thing in need to do is put some type of padding where i rap the webbing. its really great how well the aframe works.!
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t-dog
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Jun 6, 2005, 9:42 PM
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wow, you must really love your car, huh?
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gymslackerclimber
Jun 7, 2005, 6:25 AM
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DO I LOVE IT??? you bet you ass i love it,,, it gets me around when things are down, i geuss you could even say, its my durable sweetheart.. :righton:
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