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dreadlock

Popeye's nemesis... Offers?

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Have made a bit of progress on the NCFM kit, everything that is included is excellent, top quality stuff. Decided to run with a bit of an air racing theme so plan to have it looking like this once finished....

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Got to love this plane right from the beginning, Step 1: add lead, 4 off, to both sides! :twisted:

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and then more....

Step 2:Ballast tubes installed, another 6 slugs each side. :twisted:

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Spar joined with a massive aluminium tube, wing cores glued together...post-524-13812675218574_thumb.jpgpost-524-13812675219154_thumb.jpgpost-524-13812675219949_thumb.jpg

...and we are left with one wing ready to trim the foamed PU down. :D

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Made a little bit of progress over the last week.

Drag Spars all done, drag spar joiners in, and the ribs for the fins...post-524-13812675262913_thumb.jpgpost-524-13812675263643_thumb.jpgpost-524-13812675264369_thumb.jpg

With the ribs in place more tapered gussets get added to the drag spar to each side of the ribs.

The fins slide in up to the spar and wedge against the drag spar nice and tight.

Time for a bench fly. 8-)post-524-13812675266866_thumb.jpgpost-524-13812675267545_thumb.jpg

Now, time to shape and PU the heck out of it! :D

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Right, a weekend of sanding and shaping ahead of me. ;)

The basswood stock for the trailing edge is slightly narrower than the epp, epoxy and micro-balloons along the length as a filler. Filler on the gussets around the fin ribs at the trailing edge as this is a lot thinner than the profile of the epp.

Will shape the wingtips and then onto the PU... :D

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Full size template included for the wing-tip outline, nice sharp blade and cuts like a hot knife thru butter... :Dpost-524-13812675282089_thumb.jpgpost-524-13812675282689_thumb.jpg

The ply fin tangs (piece that slot in between ribs) have a 1/16" balsa core glued to the tops then a further 1/16" balsa skin to each side, a really simple effective system.post-524-13812675283404_thumb.jpgpost-524-13812675284021_thumb.jpg

Tomorrows task, a little shaping of the tips. :|

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Finally have the tips shaped, Leading edge full of PU. Did the stabbing technique on the nose and she's come out pretty solid. Sanded everything back nice and smooth and flooded with CA. Fins are finished, last bit of shaping too do is the Ailerons and elevator surfaces.

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Twisted extensions on the way from HK and then she will start to come to life. :)

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Started cutting... :roll:

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The battery fits just snug behind the nose weights, placed pins to locate the most forward position before cutting/routing.

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Made a decent amount of access for the ballast, brass tubes have plastic caps, then will have a foam plug to ensure nothing moves.

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Everything so far is mounted from the underside. :)

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Very nice there Jason, you'll certainly enjoy putting it through its paces - there is so much junk (and water) in my garage at the moment I can't even get near my table to do any modelling - that and a serious lack of motivation to get working again... keep up the good work, you might inspire me yet...!

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Started cutting for the servo's last night, was all going very well to plan with a little cunning... ;)

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Just needed to go a little deeeper to allow for the balsa cover... this is where the stuff hit the turning thing. :( This wing is thin and in one corner the router bit pulled the foam thru and torn a hole.... time to re plan. Might have to be a balsa skin top and bottom, a servo sandwich! :?

The wing is a lot thicker in the centre and the elevator servo was no hassle 8-)

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Yeah, I had the same problem. I ended up removing all the foam and laying down some glass and carbon for the aileron servo wells.

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I've got tons of carbon cloth and veil glass if you want some?

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Excellent suggestion Si, had forgotten about that in your thread. :D

Well all is looking good again, better than planned... cut the servo well all the way thru the wing, routed out a couple of mm, layed up some carbon tow and epoxy on a balsa block, pressed into the routed recess...potting the servo at the same time.

post-524-13812675377612_thumb.jpgpost-524-13812675378186_thumb.jpgpost-524-13812675378798_thumb.jpgUsed the template to sand out the horn slot, slightly longer than what I think is needed... allows 45deg movement each way.post-524-13812675379549_thumb.jpgJoin is on the aft side of the spar, if a servo ever burns out it means I can stay away from the leads and the spar, as there is just enough room to get over it.post-524-1381267538057_thumb.jpg

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Nice work mate ..

Excellent suggestion Si, had forgotten about that in your thread. :D

Well all is looking good again, better than planned... cut the servo well all the way thru the wing, routed out a couple of mm, layed up some carbon tow and epoxy on a balsa block, pressed into the routed recess...potting the servo at the same time.

[attachment=4]2012-08-11 14.33.46.jpg[/attachment][attachment=3]2012-08-12 13.47.36.jpg[/attachment][attachment=2]2012-08-12 13.47.56.jpg[/attachment]Used the template to sand out the horn slot, slightly longer than what I think is needed... allows 45deg movement each way.[attachment=1]2012-08-12 14.19.30.jpg[/attachment]Join is on the aft side of the spar, if a servo ever burns out it means I can stay away from the leads and the spar, as there is just enough room to get over it.[attachment=0]2012-08-12 14.19.39.jpg[/attachment]

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:D

Electrics in... one step closer to taping.

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The plank looked like it had been attacked with an axe once all the holes were cut for servos, batteries etc.post-524-13812675383447_thumb.jpg One final test of the whole system before installation, Brown Jack all soldered and ready to go. Labelled the servos and holes they go in and have set all the throw directions.post-524-13812675384145_thumb.jpgpost-524-13812675384788_thumb.jpgThe Brown Jack Mount was made with a piece of ply and some thick balsa, drilled the ply for the socket and the Balsa larger for the Plug, leaves a nice recess once sanded to shape.post-524-13812675385458_thumb.jpgpost-524-13812675386102_thumb.jpg One final run of all the electrics before I started covering everything over.post-524-13812675386763_thumb.jpg

Covered one of the Fin, gotta love ultacote, so nice to work with... :D

Had to have a flying fix today so hiffed the DLG about for a while, sore bloody finger now! :evil:

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There is about 300g embedded in the nose already so hopefully will not need too much extra. Will balance her before tape/covering to get some kind of idea if it does need any.

Everything covered in, just need to install the receiver, one more bench test before I go any further! Don't want a servo to die now... :o

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