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Step 7Attach the Handles and Trigger
I made my handles out of the handle from an unused toilet plunger. It had been given as a gag gift (gee... thanks. just what I always wanted), and since we already have one plunger for each of our toilets, this one had no purpose. Of course, you may use whatever you like. Plastic pipe or wood dowel would be fine. Just make sure it's equal to or slightly less than the diameter of the mounting hole on the brake lever.
First I cut the toilet plunger handle into two equal lengths. They are about 8" long, but you can make them however long you wish.
If the plastic you're using is black, as my handles were, wrap a piece of masking tape around the handle, about 3" down its length. Using the 3" ABS pipe as a reference, draw an arc at the end of each handle. The arc should be relatively long, so that there is a large amount of contact area between the barrel of the bazooka and the handles for gluing.
With a scroll saw, carefully cut along the line, being careful not to rotate the handle. Clean up the cut using an X-acto knife or a sander (depending on what the handle is made of). Dry-fit often, to ensure a snug fit against the edge of the pipe.
When the handles are finished, try a few positions for them on the pipe. You may want them closer or further from the end, depending on the arm length of the user. You may also change the angle for better ergonomics. Glue one handle using hot glue, then re-fit the second handle and glue it in place also.
The last step is to attach the brake lever. In my case, I had to add a shim to get the lever to clamp down securely. A piece of bike tire tube (the same one I stole the presta valve from) fit perfectly. Position the brake lever on either the left or right handle, and secure it by tightening the screw.
First I cut the toilet plunger handle into two equal lengths. They are about 8" long, but you can make them however long you wish.
If the plastic you're using is black, as my handles were, wrap a piece of masking tape around the handle, about 3" down its length. Using the 3" ABS pipe as a reference, draw an arc at the end of each handle. The arc should be relatively long, so that there is a large amount of contact area between the barrel of the bazooka and the handles for gluing.
With a scroll saw, carefully cut along the line, being careful not to rotate the handle. Clean up the cut using an X-acto knife or a sander (depending on what the handle is made of). Dry-fit often, to ensure a snug fit against the edge of the pipe.
When the handles are finished, try a few positions for them on the pipe. You may want them closer or further from the end, depending on the arm length of the user. You may also change the angle for better ergonomics. Glue one handle using hot glue, then re-fit the second handle and glue it in place also.
The last step is to attach the brake lever. In my case, I had to add a shim to get the lever to clamp down securely. A piece of bike tire tube (the same one I stole the presta valve from) fit perfectly. Position the brake lever on either the left or right handle, and secure it by tightening the screw.
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