Need help to calculate engine size and servo size

[HilldaFlyer]

I am just sitting here smiling
What a project! It is way beyond my ability to help, but I had to comment to let you know that I am completely amazed! Great Build.

 

[The-One-Who-Never-Crashes]

When I design planes, I follow the following guidelines when selecting my power setup:

10watts=~1oz. of thrust

So you'll need around 160watts per pound, or 32000watts total to give your 200-pound Spitfire a 1-to-1 power-to-weight ratio.
Since watts=amps*volts, that would mean running a 12S LiPo (about 40 volts) on a power setup that pulls 800 amps.

So you'll definitely want to go with gas. (I have no experience with gas, sorry).

GREAT BUILD!!! This is awesome!

 

[ZoomNBoom]

Its not like you need anywhere near 1:1 power ratio to fly. ~25W/lb will get you in the air, three times that is plenty for non 3D flying. So that works out to roughly 5-15KW. You can do that electrically, but its not going to be cheap:
http://www.espritmodel.com/hacker-a2008-motor.aspx

Around $1000 for the emotor, $500 for the ESC and the battery is not going to be free either.

For scale flying, this is probably plenty though:
http://www.hobbyking.com/hobbyking/...Max_100cc_Size_Brushless_Outrunner_Motor.html

and almost affordable.


This project is insane btw! I still have a hard time believing this happened by accident, but way to go!

 

[nerdnic]

Bump

 

[wilmracer]

Bump

Yeah. I'd really like to see more details on this one.

 

[The-One-Who-Never-Crashes]

Any updates, Av8tor?

 

[nerdnic]

Any updates on this?

 

[kevparang]

That is a nice plane great job to whoever built it.

 

[kevparang]

Man that is beast!! Yes, you do need to register and maybe even need a permit?? Possibly, I do not know the specs, but if you could tell us more about that plane, it would be nice.

 

[PsyBorg]

"B" "I" double "Guh" BIG pretty much sums up the spec's for this thing. I am really surprised this was not already in its own FT episode just for the build.

 

[The-One-Who-Never-Crashes]

"B" "I" double "Guh" BIG pretty much sums up the spec's for this thing. I am really surprised this was not already in its own FT episode just for the build.

Yes, yes, YES!!! This has to be in an FT episode!