Siren Mounting
I decided to finish my siren, or should I say sirens!
I made a tracing of a Schwinn gooseneck, then used a level and my bicycle to figure out what angle the siren should be mounted so that if faces forward - on the real bike the tiger sort of faces up into the air, but I wanted it looking ahead:
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I marked out some 1" wide brass strips (from hobbytown) and drilled them on Nick Daring's drill press.
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I bent the brass brackets by hand with clamps and pliers - it's tricky because you have to unclamp it to check the angles and reclamp it to make adjustments. But it worked.
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I also cut aluminum plates (on Nick's tablesaw) - one for the bottom and a smaller one for inside. I used 1/8" thick aluminum (as opposed to the movie bike's 1/4" because that's all Hobbytown had - but I think it works fine.) I drilled the plates to match the brass brackets.
I previously modified my siren bottoms to be flat - this involves cutting off the mounting divit and filling in the area with modelling epoxy.
I also reinforced both my boxes with fiberglass drywall tape and polyester resin.
I backed my aluminum plates with self-adhesive foam from Hobby Lobby.
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I drilled the boxes for the aluminum plates, and then drilled six more mounting holes as per the museum bike.
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I painted my re-sculpted tiger head with acrylic craft paint- here's a side by side:
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I sealed the acrylic with Krylon Crystal Clear.
I had to dremel out some of the siren back plates to get them to fit around some of the bolts. I also dremeled a flat edge on some washers because the clearance on the Schwinn gooseneck is minimal. Also, I painted the boxes Krylon gloss black.