Nice action there,how long is the stroke on that? You going to make your own Gator?Thought about what to use for sound yet?
Halligator
So, I had an extra cylinder and half sheet of plywood and I thought I would start on an alligator of sorts...
I've wanted to do one of these for a while and really wanted to do one that turned its head as it rose, but I don't have time for that this year.
Anyway, the two attached videos give the basics of the mechanism. The hub that moves has within the mechanism rollers facing up to reduce friction at the end of the run when the "head" rises, and also down to manage the weight along the track. On the top, the plywood just rides on top of the fixed plywood shaft. I run my haunt at 90psi and this seem sufficient to run it at this point, I may put a wheel or roller in there too at some point to improve speed.
The mechanism in the two videos is still a little rough, needs some tightening to improve tracking - it's a trade off between perfect tracking (friction) and speed. All metal construction would vastly improve this (working with plywood that isn't warped would help too).
The plan at the moment is to have the front legs rise slightly off of the ground at the end of the run and to have the mouth wide open. Installed will be simple led eyes and a gnarly body of spray foam. The hinge point for the body, half way between the front and back legs, will not be natural for a 'gator, but I don't think for the TOTs that will matter much.
Will post more as it progresses...
Cheers,
Kerry
https://www.youtube.com/watch?v=_eu1IWSqcm0
https://www.youtube.com/watch?v=qBiCLH_otfM
I've wanted to do one of these for a while and really wanted to do one that turned its head as it rose, but I don't have time for that this year.
Anyway, the two attached videos give the basics of the mechanism. The hub that moves has within the mechanism rollers facing up to reduce friction at the end of the run when the "head" rises, and also down to manage the weight along the track. On the top, the plywood just rides on top of the fixed plywood shaft. I run my haunt at 90psi and this seem sufficient to run it at this point, I may put a wheel or roller in there too at some point to improve speed.
The mechanism in the two videos is still a little rough, needs some tightening to improve tracking - it's a trade off between perfect tracking (friction) and speed. All metal construction would vastly improve this (working with plywood that isn't warped would help too).
The plan at the moment is to have the front legs rise slightly off of the ground at the end of the run and to have the mouth wide open. Installed will be simple led eyes and a gnarly body of spray foam. The hinge point for the body, half way between the front and back legs, will not be natural for a 'gator, but I don't think for the TOTs that will matter much.
Will post more as it progresses...
Cheers,
Kerry
https://www.youtube.com/watch?v=_eu1IWSqcm0
https://www.youtube.com/watch?v=qBiCLH_otfM
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