Hi All,

I started planning this design last year as a design for electric power from the start. It had to be an all take-apart model as I need to take it with me to overseas competitions. My target weight was 1650 grams (58.2 oz) but unfortunately I did not manage to achieve this and it came out a bit heavier and that necessitated a larger capacity battery. So now it weighs 1730 grams or 61 oz. I have test flown it and it flies very well at this weight so maybe it's not so bad after all.

It's powered by an E-Max 2826 with a 60 amp ZTW esc and 4-cell Nanotech 3000 mAh lipo. The timer is my KR ver. 2 governor timer and I'm turning a 12 x 6,5 APC wide blade prop from Dennis. I've also tried the standard old thin blade APC 12 x 6 but the extra amount of thrust from the wide blade is awesome so I'll most likely stick to these props.

I'm using one of Igor's laminar flow airfoils plus and air-foiled thick stab. From take-off it was groovy and that is what I was trying to achieve. It has a very sharp corner and still locks in nicely and tracks on rails, so right now I am rather pleased with the way it flies. The paint job is very basic and a bit flat at the moment so maybe I'll spray a bit of strategic clear something or other on it. This is the great thing about e-power.......you can fly before the finish is actually completely done!

The name "Newtron"......o.k. my spelling is not too good?? No, it's actually a new version of what I learned from the Electron that I've been flying since 2008, so it's a New ElecTron. As some of you know, I do have fun playing around with words! I spent a week flying at sea level with Percy Attfield to see how it worked out before we go to Bulgaria for the world champs at the end of August. It does need a little more trimming but so far it feels great. Now I just need to trim the pilot!

Keith R

What Crist said!

Also I like the cross sections in the nose - nice job with the cheek cowls and how they blend in by the wing.

KEEP PRACTICING! 

Nice Keith.....the only other thing to do is to give this to Loren at the worlds so he can bring it back for me!  


I have been pondering that idea of a full length hinge for a while - I think you have cracked it with the addition of hinges at each end.........well thought out!!! 

Howard you are thinking of Newtyester

I thought Newtron was a synthetic fabric made from Newts. 

Maybe that's what I used for the hinges??

Hi Andy, I am still worrying!! I was way behind on my schedule...as always. I'm setting the rpm to around 8600 and I was hoping to use a 2700 Thunder Power Pro-lite 4 cell pack, but I'm consuming 2200 mAh, so that would be pushing it a bit. Loren Nell that flies with Wynn in New Zealand is using the same motor with the 3000 mAh Nanotech and has some reserve. What line length are you using?

Allan, the number was just a number that I liked at the time.....no superstition or anything. The wingspan is 58 inches and the area is around 670 squares. The 12 x 6.5 EW is the pusher from Dennis. I intended to take lots of pics when I was building but got way behind with time as I said above, so I only took a few unfortunately. I was also busking my way and trying a few new techniques. If you don't mind seeing the messy workshop, here are a few pics (Wynn can ask Loren about my workshop......it's usually a disaster area!)

I think you nailed it Dennis, I fly at sea level and my tach bounces back a forth between 8100 and 8200.  Keith I fly on 59' eyelet to eyelet lines and I have good line tention everywhere.  But again I don't fly at 5000 feet, its just like when I fly at VSC at 3000 feet and have to add nitro to my normal mix to get decent performance.  It would be interesting to know what the altitude is in Bulgaria, you may have to drops the revs a bit when you get there.
Andy

Ha! One of us is a mind reader, Keith. First the take-apart system you detailed a while ago is just like mine and now your foam wing construction is also just like mine. I think I must be the mind reader and you the talent as you've built yours and I'm still dragging the chain

Ha! One of us is a mind reader, Keith. First the take-apart system you detailed a while ago is just like mine and now your foam wing construction is also just like mine. I think I must be the mind reader and you the talent as you've built yours and I'm still dragging the chain

Hi Ash, I have my spies over there, so you need to hide stuff! The foam and balsa wing with cut-outs for the ribs saved a lot of weight. Each half with paint and all weighs around 210 grams. This is quite good for a take-apart wing. The fuselage nose section put on a bit more weight than I planned so this could use a bit more work. I used white wood glue to glue the balsa onto the wings by the way. I let it dry on both sides and ironed it on. The upper and lower fuselage decking is made the same way.

Hi Bob,

Thanks so much for the nice comments and I also appreciate the history on your experience with this type of construction. I was aware of the weaknesses as well and this was another reason for using a poly-tissue called Dacmat. It's just as good (or bad) as Polyspan but is slightly thicker at 35 grams per sq. meter instead of 25 like Polyspan. Plastic film would have been too weak. Maybe "money-coat" would work. I seem to hit a wall of around 250~260 grams per wing panel with all of my other methods for the same size, so this weight of 210 grams is a bonus. Even the Yatsenko Shark wings are similar. I did some very hard corners down at sea level in some strong gusty wind, and the wings seemed o.k. I suppose that time will tell, as long as they don't let go in my qualifying rounds in Bulgaria..........!

If I did manage to achieve the target weight of 58 oz. then I was not too worried about the wing loading. The fuselage front section came out heavier and most of the extra weight was there. I seem to remember you saying something about models can be real light but not too weak, and as I was building the snout, it felt a little flimsy here and there, so of course I just kept adding stuff. It flies really well in my opinion so I should enjoy it in Bulgaria. I'll be flying plenty during these few weeks before we go so I'm hoping that I can just trim a few more little things and then it should be fine.

On my timer story, I would love you to try it!! For something that started out as just something a little better for beginners and sport fliers to get into e-stunt, it has developed into a viable competition system without breaking the bank. I've also made it a lot better from the feedback from some good guys and now I feel so good when someone like Dennis Adamisin says that it works well. It would be great therefore to add your feedback to the list. I look forward to this, so thanks a lot!