• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

Airplane scratch build project - Evangel 4500

The Hangar

Well-known member
Hey friends! At Flitefest 2019 I worked on a project a friend had designed. He drew out some plans and gave them to me. I translated them to foam board and tried to make it fly. Well, it didn’t. There were a number of issues:
1) it was heavy. I am usin 1808 motors on 3s, so I have plenty of power but more weight means you need more airspeed to keep it in the air.
2) since the motor nacells in the design are so low, you need a bit of down thrust to compensate for that. I didn’t have any making it loop upon launch. Fixed it there.
3) I had accidentally made my nacells slightly crooked, so my plane always wanted to pitch right.

I plan to redo the wing and leave the fuselage since i spent a while painting it and I’m pretty happy with how it turned out😉. The tail got a little banged up in transportation and storage, tho that will need some work too. I have the plans I used and will try to post them just in case anyone else wants to join along! (Please do!) It is a pretty small plane - just a tad bit smaller than the mini guinea pig.

NOTE: progress may be slow as I’m working on several other airplanes right now😂
Last edited:
I really like the look and the design philosophy of the Evangel.
A rugged and minimalistic plane, purpose-built.
Interesting that the prototype was atricycle gear high wing while the production model turned up as a low wing tail dragger. Probably to make maintenance on the engines easier plus the increased angle of incidence will help with the STOL characteristics...

I think you captured the basic lines quite well. if I'd change anything off the top of my head I'd probably reduce the size of the aerodynamic balances on the tail plane and add to the stab surface instead, that will make it flex less and help with control. for the two-in one linkage neccessary for the twin elevator I would probaly invest in a linkage stopper to make setup easier.
Speaking of linkages, they look a bit long and floppy. you should probably secure them to the foam in a few places, or if CG allows move the servos farther back inside the fuselage.
Last edited:

The Hangar

Well-known member
Well I built another wing as a typical ft fold-over wing as offside to the previous under-cambered wing and got the thrust angles right. It flew straight had an abundance of power. The pilot thought it stalled but looking back at the vid it looks like he lost orientation or something like that. He’s had over 40 years of experience in rc so I thought he might have more of a chance at success than me...

The Hangar

Well-known member
I am building a quarter scale Evangel, pictures to come sometime in a near future..

This is a serious project, not a toy... serious money has been invested in designing and the inicial building stages..
Awesome! Feel free to post your progress on this thread. Those are nitro motors, right? I’m really eager to see this project since from what I’ve seen, I’m the o ly one to have built an rc version. And mine had moderate success. Yes, it flew - but justa little. I plan on revisiting this project in the very near future for either a c pack twin or a monster radial twin! Good luck!
Made the vertical stab and rudder. Glued two pieces of foam board together and sanded to shape. Glued pieces of sand paper between the pieces to use as hinges and they work great. @The Hangar, you missed out on some fun building today!