Introduction: Zipline Brake

Picture of Zipline Brake

Ziplines are really fun, until you hit the end and stop short. Brakes can solve this but they are around $80 (http://stores.backyardziplines.com/-strse-17/Brake-Block-Kit/Detail.bok) Why pay that when you can make your own for about $20

Step 1: Materials/tools

Picture of Materials/tools

MATERIALS
zip ties x2
6x6x1 block of wood x2
2 1/2-3in bolts (it doesn't matter) x2
20-30 ft. of 1/2in. bungee cord (depending on the and speed of the zipline: http://stores.backyardziplines.com/-strse-1/1-fdsh-2%22-Bungee-Rope/Detail.bok)

TOOLS
large screwdriver (only if you are using an eye loop)
small bar clamp
wrench (for the bolts)
eye loop (or something to anchor the brake to)
a hammer
a powerdrill with a large bit
a tablesaw  with a dado (or something to cut a slit in the wood with)
a ladder
a person to test the brake

Step 2: The Block

Picture of The Block

use the dado to cut a slit in the wood, make it slightly bigger than the cable. do this in the center of both blocks.

Step 3: The Knot

Picture of The Knot

use the drill to make a hole in the wood so the knot can fit, if you need to go through the wood just start a hole in the other block. you should be able to put the knot in the hole and put it together without a gap. after that use the dado to cut a 1/2 in. slit for the bungee in one of the blocks.
Optional: you can use a zip tie around the knot if you are worried about it coming un-done

Step 4: The Bolt

Picture of The Bolt

line up the blocks of wood and drill 2 holes big enough for the bolts. i put one in each corner, but you can put then in all 4 corners.

Step 5: Put It Together

Picture of Put It Together

now go wherever it is easy to work on the zipline. put the knot in the knot hole and and do the same for the cable. put the top peice on and use the clamp to hold it so you can bolt it together.

Step 6: Find a Spot

Picture of Find a Spot

find a spot for the brake block. if you used a 20' cable then you want it 10'-15' away. if you used anything bigger than remember that the cable stretches about 150% of its length. now find a place to anchor it(it could be a fencepost or a stake in the ground or anything that wont move under a lot of pressure) the bungee shouldn't stretch out when it is anchored.

Step 7: Anchor It

Picture of Anchor It

now anchor it im putting an eye loop in a fencepost, but you can do whatever works for you.

Step 8: Test It

Picture of Test It

this is probably the best step. just ride the zipline and hit the brake to see if it works. if it doesn't then you may need a better anchor or the brahe to be further away  from the end.

Comments

swaller58 (author)2014-02-02

thanks I am getting ready to put a brake on my zipline. Good idea, i have the bugee just was thinking on how to do the brake. Gives me some good thoughts.

rimar2000 (author)2011-07-15

I don't understand any of this, I am a bit dumb.

Maybe if you put a video. With captions, if you can, please.

tim127 (author)rimar20002011-07-15

what dont you understand? i will try to put a video on as soon as i can

rimar2000 (author)tim1272011-07-16

My native (and almost unique) languaje is not English. Besides, some words are not in Google Translator. Example: zipline. Your instructable is well done, therefore I would know a bit more of the matter.

tim127 (author)rimar20002011-07-16

i cant put a video on (its over the size limit) but in sure you can find videos of similar brakes on the imternet

logimaniac (author)tim1272011-08-02

stick it on youtube and leave a link

jooknon (author)rimar20002011-07-22

Not sure if this helps, but in other English speaking countries they call these "Flying Foxes".

About This Instructable

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Bio: I like to play with electronics, and take stuff apart. Sometimes i do woodworking projects with my dad.
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