Spanky_Gazpacho
New member
Trying my hand at building a big slow foam board plane. 5ft wingspan and about 3ft long w/ a weird hybrid split v tail section that I made up. I've got the majority of the air frame built and I'm waiting on the motor and ESC to show up. I got to the part of construction where I needed to worry about a motor mount for the front of the plane. I don't have any thin plywood lying around and I'm to lazy to track down a store that sells it so I came up with an alternative: Fiberglass.
I grabbed a scrap chunk of MDF about 1 foot square and covered the surface with packing tape to get a smooth, non porous surface, then hosed it down with mold release. I threw down a layer of fiberglass cloth (can't remember the Oz rating) then a layer of chopped fiberglass mat, then another final layer of cloth. Soaked it through with marine grade resin and squeezed out all the air bubbles. Once it's done curing I'll pry it off the MDF and clean up the edges with a pneumatic cutoff wheel I have floating around somewhere. Once the motor comes in I'll mark off the mounting holes and affix it to the air frame.
Has anyone made/used a fiberglass firewall/engine mount? If so did you see any benefits over the plywood?
Also, if anyone is curious how it turned out I'll try to remember and post pictures and a follow up once I get it all done.
I grabbed a scrap chunk of MDF about 1 foot square and covered the surface with packing tape to get a smooth, non porous surface, then hosed it down with mold release. I threw down a layer of fiberglass cloth (can't remember the Oz rating) then a layer of chopped fiberglass mat, then another final layer of cloth. Soaked it through with marine grade resin and squeezed out all the air bubbles. Once it's done curing I'll pry it off the MDF and clean up the edges with a pneumatic cutoff wheel I have floating around somewhere. Once the motor comes in I'll mark off the mounting holes and affix it to the air frame.
Has anyone made/used a fiberglass firewall/engine mount? If so did you see any benefits over the plywood?
Also, if anyone is curious how it turned out I'll try to remember and post pictures and a follow up once I get it all done.