quorneng Show full post »
quorneng
Now complete.
Complete1.jpg 
As intended apart from the prop on the front it is aerodynamically unchanged from its earlier pure glider form. The primary object of the exercise being to convince myself the original (30 year old!) concept was sound(ish!).
With an 1800 MAh 2s it weighs 425 g (15 oz). A touch more than I had originally 'guesstimated'.
With 65 W available (giving about 70 W/lb) it is not going to be a 'rocket' but hopefully with its A2 glider roots it will be able to cruise about for quite some time.
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bogusbandit56
quorneng wrote:
Now complete.
Complete1.jpg 
As intended apart from the prop on the front it is aerodynamically unchanged from its earlier pure glider form. The primary object of the exercise being to convince myself the original (30 year old!) concept was sound(ish!).
With an 1800 MAh 2s it weighs 425 g (15 oz). A touch more than I had originally 'guesstimated'.
With 65 W available (giving about 70 W/lb) it is not going to be a 'rocket' but hopefully with its A2 glider roots it will be able to cruise about for quite some time.


I must say 425 grams is a surprise to me as well. I thought it would be lighter than that but I wouldn`t worry with that big wing area it could could be up for hours in the right conditions🙂
Wot, no Depron?
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Wildthing
Looks great, 15 oz sounds light to me 😉 
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quorneng
An edited video of this mornings 9 minutes flight.

Not exactly aerobatic but it certainly 'floats' about and full power was not used at any time even for the launch!
In fact it was flown twice for a total of 15 minutes and it used just 315 mAh to do it. 
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bogusbandit56
Wonderful, Simon!
I bet your pleased to see the Maraurder in the air again after all these years🙂
Wot, no Depron?
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quorneng
Well I found the problem with 60 year old balsa - it gets brittle!
22May19.jpg
 Rather turbulent so just a bit too much elevator 'recovery' action and..........
Once the wings completely separated the fuselage was free to 'lawn dart' straight down. The impact damaged the nose and motor mount, snapped the fuselage just ahead of the fin and broke the RH tail plane.
Only the ailerons, rudder and LH tail plane are completely undamaged.
Not worth repairing but it was interesting while it lasted.

The electrics will re appear in something else! ðŸ˜‰  
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Wildthing
quorneng wrote:
Well I found the problem with 60 year old balsa - it gets brittle!

 Rather turbulent so just a bit too much elevator 'recovery' action and..........
Once the wings completely separated the fuselage was free to 'lawn dart' straight down. The impact damaged the nose and motor mount, snapped the fuselage just ahead of the fin and broke the RH tail plane.
Only the ailerons, rudder and LH tail plane are completely undamaged.
Not worth repairing but it was interesting while it lasted.

The electrics will re appear in something else! Ã°Å¸Ëœâ€°  


That's to bad, need a dislike button. 
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bogusbandit56
Wildthing wrote:


That's to bad, need a dislike button. 

There is one Sherlock, right next to the like button.😃
Wot, no Depron?
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bogusbandit56
quorneng wrote:
Well I found the problem with 60 year old balsa - it gets brittle!

This was a concern I had for the old balsa. I`m sorry to see that happen and have shown my dislike by pressing the thumbs down button.🙂
22May19.jpg
 Rather turbulent so just a bit too much elevator 'recovery' action and..........
Once the wings completely separated the fuselage was free to 'lawn dart' straight down. The impact damaged the nose and motor mount, snapped the fuselage just ahead of the fin and broke the RH tail plane.
Only the ailerons, rudder and LH tail plane are completely undamaged.
Not worth repairing but it was interesting while it lasted.

The electrics will re appear in something else! ÃƒÂ°Ã…¸Ëœâ€°  
Wot, no Depron?
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Wildthing
Well there is now an empty space on the wall for a new build. 😉 
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