Make It Real: Batman Grappling Hook and Rappel Device
Batman v Superman: Dawn of Justice just came out so we decided to do some batman themed gadgets. It was a lot of fun to make and the best part is that it actually worked.
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Project design goals
- Build a working grappling hook and rappel device that will detach and wind up for reuse.
- Functional. Batman gadgets need to be reliable; because your life depends on it.
- Small. These gadgets must be able to be carried easily or worn on a belt
- Aesthetically pleasing. Bruce Wayne has a lot of money to waste and requires all of his gadgets to look awesome.
We started by designing and building a clamp linkage inspired by a pallet clamp.
And then we made it bat themed…
We got this laser cut out of 1/8″ stainless steel at Ontario Laser Cutting Inc.
Next was the rappel device. There are rappel devices on the marked such as ATCs or GriGri but they are designed to use with 9-11mm diameter ropes. Ropes this large are too large for batman to use so instead, we used Kevlar rope and had to design our own belay device.
It was a little tricky and took a few iterations to get the belay device to work properly. Turns out, it is a lot more difficult to grip a 2.5mm kevlar rope than a 10mm climbing rope. This lead to some failed descents as well as some rope burn.