K8b 6 mtr self launch success

Euan Galloway · Post by **Euan Galloway** » 22 Apr 2015, 18:49

After watching a modified K8 fly at our recent club event I pulled mine out of the loft and have added the required extra spars and shear webbings, Today I test flew it and can report it all went rather well using my Shedology plug in pylon system.
I have just short of 5000 watts on 12 s lipo and only required quarter stick to climb with the take off from my dolly in under 30 mtrs on full power

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I have a small issue with my folding prop and the pylon will need a bit of extra strength but really happy with what is the largest electric model I have flown .
cheers Euan.
ps I will upload some flying shots when they arrive

Cliff Hannam · Post by **Cliff Hannam** » 22 Apr 2015, 19:42

Well done Euan, pleased to see your efforts have proved succesful.

A worthwhile project that I followed with interest!

Regards,

Cliff

Barry_Cole · Post by **Barry_Cole** » 22 Apr 2015, 19:56

That's nearly 6.5 HP, more than my tug produces. It should go up like a rocket.....

BC

Euan Galloway · Post by **Euan Galloway** » 16 May 2015, 16:44

I had a rethink on just how much power I needed to safely fly my K8 as my original pod had 5000 watts .
I have made a new pod with 2700 watts from a turnigy 6364 245 kv motor on 10s lipo with a 19x12 prop that I test flew yesterday , still plenty of power to climb and take off from the launch dolly

I hope to try it without the dolly next week at Sandhays ,
cheers Euan.

glidermalc · Post by **glidermalc** » 18 May 2015, 15:44

With that sort of power available it would make a good tug!

Euan Galloway · Post by **Euan Galloway** » 24 May 2015, 20:31

I took the K8 to the Sandhays event and had several good flights over the weekend, the model takes off without the dolly in around 50 feet and my folding prop worked without damage

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I got some photos taken in flight from Stuart Cranage who kindly uploaded them ,thanks again>
cheers Euan.

Euan Galloway · Post by **Euan Galloway** » 25 May 2015, 10:28

After several enquires about how I made the pylon and what motor etc I used ,
The motor is a Turnigy 6364 245 kv on 10s lipo with an Aeronaut cam 19x10 prop giving approx. 2700 watts.
The main body is a 80mm cardboard tube and either a Mc Donalds or a Burger King drinks lid at one end and a 3 inch carbon spinner at the other<Burger King lids are better > the motor mount is an alloy spinner back plate bonded in with Hysol epoxy .
The mast part was from a NHP carbon heli blade filled with hysol to give it a bit of strength after running the motor wires through it .
Both the outside and inside of the cardboard tube has been glassed with cloth but using polyester resin <as I have lots of it > a ply plate was also bonded inside to locate the heli mast .
The blades have a small brass plate at each root to stop them folding too far back and work well in flight using the brake setting on the esc , I also have used the slow start function as without the blades will hit the pylon before opening

after testing at Sandhays I have given mine a final coat of paint ready for its next outing
cheers Euan.

Euan Galloway · Post by **Euan Galloway** » 11 Jun 2015, 19:44

well it was all going so well ? at a local event recently my K8 sadly caught fire after my esc let all the smoke and flames out

most impressive smoke display and the result was a ruined esc , rx and telementry system ,
all now sorted with a freshly painted interior new quality esc and rx etc ,
cheers Euan.