Coyote`s Eazystar Build

[Jay28]

Excellent stuff, can't wait to see the maiden!

[TerrorTrooper]

Fair do's Ian! She looks lovely!!!

Bet you cant wait to try her out!

[Coyote]

Not half Iain,

After some extensive testing with my other EZ if now found that with the CG further forward the plane flies much better and needs no trim at all. This comes in very handy for my fpv setup.

Because the CG is further forward i could then remove weight from the tail. By all means its not a huge ammount but as you can see from the pic below, still a fair bit. 



Left hand side new dead weight, right hand side previous dead weight, quite a big difference :)

Now i rechecked original weight of plane,  its 1150g or 40.57 oz or 2.54 lbs.

New weight of 1075 or 37.9oz or 2.37 lbs

Weight saving of 2.65oz or 75 grams

[electricmick]

What was your final decision on the tail mounting? Would you do anything different the next time round? I see you have not moved the elevator and rudder servos so how do you handle the tail connection? I am just at the glue or order magnets stage on my EZ* build. More decisions.....

[Coyote]

I ended up gluing the tail, cutting one half of the fuse further up. So the tails rock solid. There was too much give any other way so just didn`t work out practical. the servo linkages arn`t glued all the way so bend round :)

[electricmick]

Magnets ordered, thanks. Where would you recommend cutting the tail?

[Coyote]

Half way between vertical stab and motor mount then carbon rod the full side. But i wouldnt commit recommending it till mine takes to the air in next few days :)

[electricmick]

I will definitely wait for your test flight as the magnets will take at least a week from HKG anyway. The location I was considering was as marked in the photo as this would leave the tail section as normal, give access to the two cut-outs in the fuselage and does not disturb the load path from the wing to the fuselage. The angle is to provide both vertical and horizontal load paths from the tail into the main fuselage. It is all a compromise at the end of the day.

[Coyote]

Just got in to find my Gopro live out angled lead has arrived from Firstpersonview.co.uk. Cant knock Simon, always next day delivery spot on.

So i cut the cable down, fitted it to EZOSD input and turned it on to see what we got.

GoPro live out + EZOSD test

Handy seeing the writing really clear but shame it doesnt fill the whole screen. The beeping is the telemetry from the EZOSD to the tracker working :)

[mark1975]

looking good ian ... now go and fly he he

[Coyote]

Change of plan, ive ripped the outrunner off the FPV version and fitted it to my los Easy, its more powerfull for sure but i think i need more for FPV version.

[KeltonTurvey]

Looking very good, I look forward to seeing some footage...

[Coyote]

Ive now noticed that the tail mod is not the best of ideas, the magnets are that strong they have pulled the tail that tight together on one side that after a week of sitting there its now starting to bend the tail round :(

[Coyote]

Update, well its all finished.

Glued the tail now, not happy with he magnet pulling too hard.

USB cable fitted but im awaiting an angled mini b usb cable to get it tighter and to follow the angled jack plug ive now fitted. The Gopro now outputs live to EZOSD and chages off the Vtx 5v camera supply.



Second thing was the outrunner. As Paul ( Venquessa ) Had stated mile more power than a stock 2200kv black mantis or Turnighy example but i felt for the extra weight and speedf i was after it was still a little low on power.

I decided on recomendation to go with a Keda motor from Giantcod. Its a Keda 2213 1920KV Brushless Outrunner Motor.

Just spooled it up and im getting 20 Amp draw at WOT on a APC 6x4 Prop.

I fitted a framework into the original inrunner enclosure and epoxied it in the the base plate to the frame. I used hot glue to hold it in place while the epoxy went off and for more strength.



Next was a little finishing touch for more interesting videos, i added a Flycam 2 to the nose pointing down for some different angled shots and as i have no tilt on GoPro a bit of a different perspective



One small problem though, ive isolated the servo chatter im getting on the pan servo, unfortunatly its the servo extender. As soon as i remove it the servos fine. So i might leave it out:(

So thats it. All i got to do is throw it in the air on saturday, back at work as from tomorrow so after work flying is out due to dark night :(  

[Njoro]

"hey all the best when she goes up, may she come down gently" ;D