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Snap Dragon

RCM&E Novemebr 2018 free pull out plan

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Richard Harris24/12/2018 14:49:19
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2008 forum posts
1843 photos

With work out of the way for a week or two I will be able to get a little more than usual 'build time' (I hope). I went with the dummy stringers up the fuselage side giving it a gentle arc, looks ok but still need to get out and sand it a little more.

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As B&Q now sell what seems to be proper depron in varying thicknesses I experimented with core laminations using their 9mm thick stuff, I got a lot of warping (should have opposed the grain) so knocked that idea on the head. Ended up just doing a built up structure which has kept the weight down, need to make the soft balsa infills at the back but that is pretty much the fuselage completed.

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As I was christmas shopping I managed to pick up several 3 litre pop bottles, once consumed I am hoping they will be big enough to shrink a canopy from. Plug to be made up from balsa blocks, picked up off the Balsa Cabin tent at the Nats for a couple of quid, always usefull.

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More work expected after the big fellas been.

 

Rich

Edited By Richard Harris on 24/12/2018 14:58:40

Richard Harris28/12/2018 18:24:52
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2008 forum posts
1843 photos

It took a lot of carving and sanding but the canopy mould is complete, I couldnt quite get it completely into the 3 litre pop bottle. Had to slit the bottom of the bottle to wrestle it in, held tight again with a couple of cable ties before applying some heat. Its turned out ok ish but I still have a couple of bottles left to perfect it.

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Whilst outside I also sanded to rear infills.

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Rich

Steve Kenney14/01/2019 13:54:30
26 forum posts
6 photos

Like the look of this small model, Rich - not built much for a few years, so will enjoy getting back into building with this model - like the video! - thanks

Richard Harris14/01/2019 20:09:46
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2008 forum posts
1843 photos

Steve,

I think Snap Dragon is the perfect choice to ease you back into building again, I look forward to your build thumbs up

Had to divert from building for a few weeks but did manage to knock up some wheels spats over the weekend, they will be secured through the UC leg via M3 bolts into captivated nuts set into ply mounts. These are just laminated out of 6 and 9mm thick soft balsa offcuts

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They are twice the size but look much bigger

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I will get these completed and move onto the wings next.

Rich

Richard Harris27/01/2019 18:02:42
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2008 forum posts
1843 photos

I have decided to make the wing in 3 pieces, the centre section is on the building board as I type. Whilst making this I have been pondering over the cowl and have decided to go with a dummy radial for this larger version. It is basically the same as the published version but increased in size using 9,6,3 and 1mm thick depron. far from complete it will be a fill in job as I tackle the wing. I will either add or remove the cylinder discs until I'm happy with the diameter.

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That's the standard version on the right

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Stephen Jones27/01/2019 20:03:33
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2606 forum posts
1486 photos

Looks well so far Richard thumbs up

Steve.

Richard Harris01/02/2019 21:08:05
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2008 forum posts
1843 photos

Thank you Stephen thumbs up

Have given all the parts a lick of paint, just need to add the plugs, exhausts and HT leads. Out of interest it has ended up weighing 22g so all in all I expect 25g which is respectable, outer diameter is 160mm.

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Rich

Richard Harris16/02/2019 13:17:15
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2008 forum posts
1843 photos

With the wings 90% complete I couldn't resist putting it all together.

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Wings have been stretched to just under 70" with the dihedral being reduced by half, full length ailerons have been attached but 'm contemplating splitting them and adding flaps. As it stands, without any clothing on and the motor fitted it weighs around the 1400 g mark (3lbs ish) so I am guessing 4 -5lbs AUW.

I'm hoping tomorrow will be ok outside so I can get to sand it all.

Rich

Stephen Jones17/02/2019 11:55:28
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2606 forum posts
1486 photos

It looks awesome now,

And i think it will still be a floater.

Steve

Thomas Gooderham16/03/2019 00:24:02
23 forum posts
2 photos

Hi Richard,

Just in the throws of building your little Snap dragon from RCME plan... Lovely little build, It is going to be remembered as my work build that I built during my redundancy period! Quick Question though, what size spinner did you use?, I have just carved me cowl today, and looking at a spinner diameter of 35mm!..

thanks

tom

Richard Harris20/03/2019 17:46:12
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2008 forum posts
1843 photos

Hi Tom,

Sorry for the late reply, have just measured my spinner and it is 25mm diameter though it is smaller than the ply disc at the front of the cowl by several mm.

Rich

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