EXPjawa
Well-Known Member
I couldn't find a gallery for the Estes EPM-010, although there are a couple build threads. Here's mine:
Estes EPM-010 Gallery
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EXPjawa
Well-Known Member
And here is a recently built upscale, which I call EPM-016:
Basically, it was upscaled from a roughly 1" diameter tube ("010" IMHO) to a roughly 1.6" tube (thus "016"), going from BT50 to BT60. So it is a roughly 2/3's bigger than stock. This model is 59" tall, and has a 24mm motor mount with a plastic screw-on retainer. Maybe it should've been 29mm, but the only 29mm to BT60 centering rings I could find were paper rather than plywood, and I didn't think that to be sufficient. Still, this is smaller than (but similar in weight to) a Mean Machine, so I don't expect it to be a problem. This will probably fly well on E20 & E30 composite motors. The paint is Rustoleum Sienna Orange, and the decals come from Stickershock.
Basically, it was upscaled from a roughly 1" diameter tube ("010" IMHO) to a roughly 1.6" tube (thus "016"), going from BT50 to BT60. So it is a roughly 2/3's bigger than stock. This model is 59" tall, and has a 24mm motor mount with a plastic screw-on retainer. Maybe it should've been 29mm, but the only 29mm to BT60 centering rings I could find were paper rather than plywood, and I didn't think that to be sufficient. Still, this is smaller than (but similar in weight to) a Mean Machine, so I don't expect it to be a problem. This will probably fly well on E20 & E30 composite motors. The paint is Rustoleum Sienna Orange, and the decals come from Stickershock.
Those EPM's, both sizes, look great. I would not have hesitated to use the paper rings in this instance (29mm to BT-60) Maybe you can build a simple 3FNC to prove it to yourself. In any case, those 24mm AP motors will give the EPM-016 a nice ride.
Would adding some balsa gussets to reinforce the paper rings ease your worry ?
Would adding some balsa gussets to reinforce the paper rings ease your worry ?
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EXPjawa
Well-Known Member
I suppose it would, since it ought to aid the shear load on the rings. Though if I went through the effort of making that gusset, I'd probably just cut out a plywood centering ring instead. Or maybe just double the rings up. I have a planned build where it'll be one of the things I try.
EXPjawa
Well-Known Member
Made the first flight of the EPM-016 this weekend:
