Build log 1/4 Scale Tiger Moth from kit

Started by flyingboxcar, June 17, 2011, 12:19:49 PM

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flyingboxcar

Finally !!!!!
With most of the stuff in place, there were no more excuses for not starting the build.
So last week got to workand started putting the Tiggy together.
The kit is from Falcon Models in UK, a super scale kit and most of the wood and other hardware is supplied. Check out the site http://www.falconmodels.uk.com/acatalog/Online_Catalogue_1_4_Scale_DH82a_de_Havilland_Tiger_Moth_21.html
The model would span 88 inches, target weight is around 15 Lbs and would be powered by a Laser 150 Four stroke glow. The model could easily be flown with a standard modern 120 4T but given the relaibility of the Laser, I have gone with this engine.

Started off with the tailplane first. Here are couple of pictures of the tail being assembeled. Do feel free to ask if you have any questions  

1. The tailplane plan all laid out
2. The tow halves for dry run
3. The CNC cut sheets. All wood is CNC ut and not laser, this was done to avoid the blackened edges and I am not compltaining


If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

The tail was completed and kept aside for sanding. The pic looks small but the tailplane is about 2 1/2 feet.
These are the supplied CNC cut epoxy board sheet fittings for various parts
If you are really into scale you should be here. www.rcscalebuilder.com

sandeepm

love to see the balsa build log............keep going without break.......!!! {:)}
Fly high if you have good set of batteries.....!

VC

All the best! This one is guaranteed to be a show stopper.
Growing old is mandatory, growing up is optional!

flyingboxcar

These are the epoxy board horns very close in shape and structure to the ones found on full scale. In the previous pictures you can see on the board from where these have been seperated
If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

A few shots of the supplied metal fittings, there are more than 100 steel and brass fittings supplied, with numerous nuts and botls. All nuts, bolts and screws are in BA sizes, so have to be very careful not to loose any.
The steel fittings have been strung in a wire so that none are lost.
Fittings spread out, and close up of the same
the last picture is of the tail skid bracket. Most of the hard work is done  :thumbsup:
If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

Another shot of the tail skid bracket.
The brass fittings are for the shackles on the control linkages. And a shot of the supplied nuts, bolts and screws.
If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

yesterday, decided to replicate the scale cowl latches and started experimenting with various materials. finally was able to fashion out one which looked convincing enough.
Here are few shots of the same. The loop is made from 1/16 brass wire, bent, flattened, and filed and then silver soldered on to a 3/32 Brass tube. Half a ball pen spring was silver soldered on to a 4-40 washer.
The two pictures are of my contraption and the full scale one (the fasteners are the round projections on both side of the chin cowl). These are spring loaded and twist and open/close type.     
If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

More shots of the test piece made.
And lastly the wastages in the process of experimenting. The one looking like alphabet "P" was ok, but the moment i would try to solder it on to the brass tube the straight piece soldered on would coe loose due to the solder melting out. Guess I could have used a heat sink there to avoid the issue. But then I think I will go with the last one and the method adopted here.
Last work to be done is drill the tube and insert a small cotter pin to retain the washer, and make three more of these
If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

The sprung and dampened undercarriage kit supplied, not much to do except bolt things together and clad the pieces in some litho plate. Compare the pic of the kit to the orginal one :thumbsup:   
If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

Next task was to start the fin and rudder assembly. Just like the full scale one the fin and tail plane are bolted on no glued on. Also you can see the huge gaps between the moving surfaces and in case you had not noticed the control surfaces have no belvel on the leading edges, relying on the gaps instead to aid in free movement.
The second pictures shows the sheets from which the shaped parts have been removed. The blank sheets would provide enough wood to build a small stick and tissue model
If you are really into scale you should be here. www.rcscalebuilder.com

flyingboxcar

And this is how the interplane struts would be fitted! Very scale manner   :hatsoff:
And now off to gluing the fin and rudder parts, wil post here as soon as some more progress has been made
If you are really into scale you should be here. www.rcscalebuilder.com

AEROVISHWA

superb buildin..... keep going sir will be following this thread until the video of the maiden flight..!!

:hatsoff: :hatsoff:  to you.!

and  :thumbsup: :thumbsup:

:salute: :salute:
Aerodynamics are for people who can't build engines.
-Enzo Ferrari

https://sites.google.com/site/vishveshkakkeri93/
HAPPY LANDINGS

Rao

True feast for the eyes of a balsa kit building lover. {:)} (:|~

flyingboxcar

If you are really into scale you should be here. www.rcscalebuilder.com

PankajC

Tail is 2 1/2 feet!!... Where are you going to keep it? Planning to move away from the bedroom?

Greate build, keep going
Spektrum DX6i | EP Pusher Trainer | EP CUB |

flyingboxcar

Talking of scale fidelity, compare the picture of the elevator horn posted at #4 above and the one on the full scale posted here. Pretty close and convincing is it not?
If you are really into scale you should be here. www.rcscalebuilder.com

AEROVISHWA

pretty similar....!!

sir these gonna be connected by push rods or by cables (like the original one had) :hatsoff:
Aerodynamics are for people who can't build engines.
-Enzo Ferrari

https://sites.google.com/site/vishveshkakkeri93/
HAPPY LANDINGS

flyingboxcar

Cables, thimbles, fairleads, shackles, turnbuckles all will be there per full size. As far as practical and possible efforts  would be towards replicating the full size
If you are really into scale you should be here. www.rcscalebuilder.com

doncoe

Hello, Manish.
I've caught up with you at last. Thanks for the link  :)

Here's one I did earlier. This was taken at Old Warden during the Scale Day Competition. It won.

*******************
Listen to your own advice

PankajC

Spektrum DX6i | EP Pusher Trainer | EP CUB |

doncoe

Will you be maiking your own panel instruments, Manish, or, like me, purchasing them from InZpan? They're very good!

Here's a couple of shots, one of PK's panel and one of her at the North Berks scale meeting one year ago. This is a Traplet 1/4 scale kit powered by a Laser 150.
*******************
Listen to your own advice

anwar

#22
Doncoe... welcome to RC India :) 

Stunning scale fidelity :hatsoff: 

How do you weather them so well ?
Hangar : Please see my introduction.
RC India forum and me : About this forum.

doncoe

Thanks for your welcome, anwar.  :hatsoff:

Weathering? Use a dirty brush and practice fo fifty years for so!  :)  Not quite like that but very nearlly so.
After having painted the parts with an artists sable brush I work on the surface a little with darker tones & black. Around details like the re-inforcing pads on the cowling, wait for the paint to be dry then flood in a little black, well thinned, with a brish count to ten then give a gentle wipe with an old handkerchief as though you were cleaning the full size machine but missed a bit.

If all goes pearshaped you can always wipe in off with a turpsey cloth and have another go. If I can find the time when I'm painting the Falcon Tiger Moth, I'll post a YouTube video clip!
Regards.
Don 
*******************
Listen to your own advice

PankajC

Hi doncoe,
Admire your eye for detail, must have taken ages to build Im sure.

Pankaj
Spektrum DX6i | EP Pusher Trainer | EP CUB |