This is a post to show my mini talon plane build as it progresses. I’ve made a slow start already.
I bought it a few months ago from a bloke in Walsall on fb for £35 I think. Just the frame (foam, wood and carbon spars). Cheap! Or so I thought.
A week or two later, I was mooching at a car boot sale. A bloke (a different one. this one was older and had less hair) had not one, but two mini talons for sale! £20 each!
I quickly rang @Steviegeek early on a Sunday morning. After the rumblings once he answered the call, I explained what was in front of me and asked if he wanted it. His reply was “oh yes”. Churchill style.
Anyway. I have a plane. A Sonicmodell Binary (as does Steve). It fly’s very well, and will do 50 mins of flight on my li-ion. However, it is very inefficient. The wing loading is quite high, so the mah per km is quite high. Sometimes in the 300’s.
This is the Binary…
It’s a twin propeller puller plane and is very quiet in the air. It weighs around 1.5kg, has a max speed of around 70mph, and with my walksnail setup, a potential 10km range in a thick cloudy atmosphere. Possibly a lot more in clear air. The li-ion it holds should take it 25km out. In theory.
This is the Mini Talon. It has a lower wing loading and has been designed for long range.
It has been designed to have 1 pusher propeller at the back. Mine will be modded to sport two puller props on the wing. Purely to keep it quiet and graceful. I haven’t glued in the motor mounts yet as I need to square them off properly and cut channels for the wires and a recesses for the esc’s. All in the wings, underneath.
My motor choice has been dictated by what I have at the moment. I will use 2 x 2507 1500kv motors. Now these may not be the best for a plane that will be around 1.5kg, But I need to try them to see if they work ok. They will hold 7" tri blade props and give plenty of thrust. My only concern is the heat they will generate under load. However, on stripping one of the motors down, I can see the quality. The have internal cooling fins. Fingers crossed they will be fine.
As you can see, there is a lot of room inside. Here is an image of the flight controller dry fitted onto a 3d printed mount.
The clever guys on rcgroups have suggested that a 120km round trip on a 5200mah li-ion is definitely on the cards, with extra to spare. So imagine my delight when I managed to squeeze in my 12ah li-ion.
That’s all for now 
Whats the difference in performance between pusher and puller configuration?