FTFC'18 WWII - Giant Scale Flapjack

[localfiend]

Wait wait ft shindin how have I not seen the plans for this yet!!!??

Hopefully soon for those plans...

What a great project!

DamoRC

Thanks, I think it'l be suitably crazy. Just perfect for FF. Plus, I want to cruise around the skies with all the other WWII prototype planes.

I'm playing around with pre-liminary designs for the 4 bladed prop. I'm going with a sorta slow fly style airfoil, as this thing isn't going to be turning real fast. Current plan is to use some all thread to attach the props as well as set pitch. Just gotta find the math to figure all that out.

 

[localfiend]

Got the motors in yesterday, so I've been playing with gearbox designs.

Unfortunately, I think I'm going to have to tweak some things. The main shaft for the props is going to need to be bigger. 8mm, the same size as the actual motor shaft seemed big enough, but I think I should probably step it up to 10mm. It looks so tiny next to the props.

 

[localfiend]

Rigged up a quick enclosure for my big 3D printer out of some old foamboard and cardboard. Got a test blade printing now.

Should be finished tomorrow and I can get a better idea of it's base strength.

 

[Grifflyer]

Why do you put a cover over the 3d printer? couldn't that cause it to overheat?

 

[Namactual]

Why do you put a cover over the 3d printer? couldn't that cause it to overheat?

You actually need to keep the heat in for certain materials.

 

[localfiend]

Why do you put a cover over the 3d printer? couldn't that cause it to overheat?

The power supply, stepper drivers, and control board are all outside of the enclosure. Nothing else is going to have a problem with the heat. I'm printing the blades out of polycarbonate. Keeping the chamber heated helps out a ton with bed adhesion, print quality, and part strength. It's not something you'd want to do with PLA, but polycarbonate, abs, asa, nylon and other similar plastics will all do better.

This is also a really big 3D printer, and the enclosure helps with getting the bed up to temp. I'm hoping it will be enough. If the print loses adhesion though, I'll need to upgrade the bed heater power supply.

 

[Userofmuchtape&glue]

Love this project! should be awesome. The 3D printed props are ingenious too.