kdwzagi's blog - RC Groups
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Posted by kdwzagi | Mar 31, 2012 @ 03:37 AM | 2,409 Views

after two failed hand launches and repairs I've decided to try a dolly

it's just some waste pipe pipe lagging and depron. I normally fly on rough common ground so I've joined a club just for a nice smooth runway!!

third time lucky

fingers crossed

Posted by kdwzagi | Feb 06, 2012 @ 10:18 AM | 2,639 Views

I've used neat acrylic paint (brushed on) the odd area needed two coats but on the whole it covered very well

it's dark purple not black. it dried darker than expected but looks ok. i'm going to order some white adhesive piping to seperate the green and purple too

the battery hatch shuts with a solid clunk due to the 5mm magnets

i'ts foggy here at the moment so the first flight will have to waite

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Posted by kdwzagi | Feb 05, 2012 @ 08:46 AM | 2,455 Views

bit more progress..

I've made the elevons up from layers of balsa. a soft 6mm bottom sheet a triangular hard balsa middle section and 3mm soft top sheet with the grain running in the opposite direction to the 6mm. they are very light and stiff

I've glued on the nose. shaped the battery hatch and fitted the elevons

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Posted by kdwzagi | Nov 01, 2011 @ 04:52 AM | 3,130 Views
I've started sanding the one leading edge. what a mess
I made up some sanding templates to help me get the shape somewhere near
looks ok so far
Posted by kdwzagi | Oct 29, 2011 @ 02:24 PM | 2,896 Views
the rudders have been shaped and covered in black heatshrink
still not glued them on yet. think I'm going to get all the bits done and then have a final fit. just a bit worried that I'll turn it around and snap the fin off
Posted by kdwzagi | Oct 28, 2011 @ 11:26 AM | 3,995 Views
I've carefully opened up the fin slots in the top skin. inserted the fins and tested the rudders. they seem to work fine. will be interesting to see how they perform in flight

Short rudder test video

Posted by kdwzagi | Oct 27, 2011 @ 03:43 PM | 3,797 Views
The top skin leading edge was sanded back to the false leading edge. the first two 6mm leading edges were then glued on. once dry the lower wing skin leading edge was sanded back to the leading edge strips. last of all the front leading edge was glued on. this overlaps the lower skin. sanding these leading edges is next. getting the fuselage front section to mate nicely with the leading edges will be quite a challenge :-(
Posted by kdwzagi | Oct 26, 2011 @ 09:18 PM | 3,052 Views
I added some extra depron blocks where the hinges will be and threaded string through the ribs to pull the servo wires. the top 3mm wing skin was sanded to a sharp edge at the trailing edges. the skins were glued on and held in place with lots of tape while it dried. the servo holes were cut out and the servos dry fitted
Posted by kdwzagi | Oct 25, 2011 @ 09:22 PM | 3,975 Views
the fins are built up from a sheet of 3mm balsa with outer depron 3mm skins

the edges of the depron are pinched in to form a bit of an Aerofoil and the front edges sanded round
Posted by kdwzagi | Oct 24, 2011 @ 04:07 PM | 3,944 Views
I've added some elevon servo boxes and sanded them smooth to the ribs.
the rear lower skin has been sanded and the rear section of the centre rib fitted.
Posted by kdwzagi | Oct 24, 2011 @ 07:50 AM | 2,870 Views
the rudders have a hole drilled in the bottom edge and a simple L shaped piano wire inserted. this is then joined to the 2mm carbon push rod with a bouble thickness of heat shrink tube. cutting the carbon tube to the correct length is important but the L shaped piano wire can be bent to adjust a slight error

the piano wire will be epoxied into the rudders once the wing top skin is in place
Posted by kdwzagi | Oct 23, 2011 @ 08:01 AM | 3,358 Views
the rudder is linked to a central servo with some push rods. a central 1.6mm piano wire is joined to 2mm rarbon rods with shrink tubing. the rudders will have piano wire torque rods that link to the carbon rods
Posted by kdwzagi | Oct 19, 2011 @ 03:36 PM | 2,540 Views
the under side of the canopy needs to be sanded to suit the fuselage top. I've drawn a green line to show the extent of the sanding.
Posted by kdwzagi | Oct 19, 2011 @ 01:02 PM | 2,631 Views
Here's a quick cad video of all the bits coming together



Posted by kdwzagi | Oct 19, 2011 @ 03:15 AM | 3,096 Views
after building mk1 last year out of epp I thought it could be improved upon. I've ditched the epp and tweaked it here and there
Posted by kdwzagi | Oct 18, 2011 @ 05:05 PM | 3,705 Views
I've been building my own design pusher.
710mm wingspan 678mm long
mainly 6mm depron
twin carbon spars
twin rudders
260watt brushless 5*5 prop