1/5th OV 10 Bronco

[Dave Parry]

Looking really good Chris, would love the full story for the Journal if you ever fancy having ago. My contact is at the bottom of my posts and in the Journal.

Good luck with the rest of the build.

Dave (LMA Journal Editor)

Be happy to write something up once it's all finished and we can get the important flying photos.

Great, will look forward to it.

[Chris Bradbury]

I've started adding a few more components that are easiest added at this stage of the build, which in this case is the lighting.

The OV10 has a single beacon light on the top of the horizontal stab, so this has been fitted. Sequence wise I've programmed this with a UniLight 8 channel controller.

IMG_4615.jpg

56218764345__DEEBC8D9-88D3-4A65-B7B2-D26FB5A2BE94.JPG

56218749765__753F5D1C-0E73-4254-A65A-A642FA5EDFFA.JPG

The tail beacon light recessed in to the skin of the rear stabiliser.

[Chris Bradbury]

A little bit off work done on the centre main wing section tonight.

I've added a 3mm ply reinforcement under the skin of the wing where the bolts will go through to mount to the centre fuselage.

IMG_4625.jpg

IMG_4626.jpg

IMG_4641.jpg

IMG_4634.jpg

IMG_4636.jpg

[Chris Bradbury]

Focussed on the centre wing section today.

Rough cutting leading edges to flaps.jpg

Flap leading edge shaped.jpg

Flap ready for install.jpg

I added some balsa block in the centre of the wing where the bolts will go through, just to help prevent any accidental over tightening causing damage during use.

Gluing support blocks in place.jpg

The phrase measure twice cut once is something I live by, which is good, as I was amazed to take not two, but three goes at calculating the position for the wing securing bolts. Must be the end of a long week...

Measure twice cut once.jpg

[Chris Bradbury]

I glued the servo mounts in place before skinning the lower side of the wing.

Gluing servo supports in.jpg

Servo bay ready to be covered.jpg

Skinning the centre wing panel.

Lower wing skin sheets glued together.jpg

Gluing the lower wing skin on.jpg

[Chris Bradbury]

With the wing skinned, I cut out some of the holes I need for servos and wiring. The centre hole is to allow wiring down in to the fuselage.

I also made a couple of tools for doing a couple of particular jobs, as it would seem I need to check Permagrit to add some more useful items to my list. In particular I made a small saw for cutting the servo bays neatly, which is a hacksaw blade with the pins knocked out and a small balsa handle added, which works really well for the job.

A couple of tools made for specific jobs.jpg

Servo hole cut.jpg

Bottom of the skinned wing.jpg

Centre hole in wing for wiring to access the fuselage.jpg

Bottom of the skinned wing with servo mounts in place.jpg

[Chris Bradbury]

I'm using live hinges for all control surfaces, based on 3mm carbon rods.

Flap hinges with small reinforced aluminium rings.jpg

Flap in max up position.jpg

Flap in max down position.jpg

Lower side of the wing showing the gap for flap operation.jpg

Lower of centre wing piece.jpg

Test fitting for leading edge.jpg

Checking flap movement clears the fuselage.jpg

Flaps fown.jpg

[Chris Bradbury]

The next small job was to add and shape a leading edge and finish the fit of the centre wing piece to the fuselage.

Cebtre wing piece in place.jpg

Leading edge fitted and rounded.jpg

Centre wing is a good fit.jpg

Servo plate in place.jpg

Centre wing piece almost ready for glassing.jpg

A third of the barn door in place.jpg

[Chris Bradbury]

The last job today was to start adding the form shape for the rear of the wing, that will eventually form in to the shape of the rear of the main fuselage.

Rear wing lump rough formed.jpg

Blocking out for the back of the wing.jpg

[Chris Bradbury]

This evening I added the control surfaces and servo mounts to the outer removable wing pieces, which will now need a little sanding off to finish.

Gluing servo mounts.jpg

More servo mouning points.JPG

Hinge detail.JPG

Hinge close up.JPG

Flap internal.jpg

Left wing ready for trimming.JPG

Shavings.jpg

[Chris Bradbury]

There is loads of control throw available.

Loads of throw.JPG

Nice and straight.JPG

Right wing end.JPG

[Chris Bradbury]

Finishing the main wings today.

Lining flaps up to match size.JPG

Unilight on right wing.JPG

Unilight and mounting slot.JPG

Running wires through the wing frame.JPG

A little sanding to finish.JPG

Main wing nearing completion.JPG

A giant barn door.JPG

Weighing components.JPG

Quick assemble.JPG

Getting a sense of size.JPG

[Chris Bradbury]

Current weight for everything in the image is a little under 8kg, so I'm still hoping to get this in under 20kg.

Quick assemble.JPG

[Chris Bradbury]

Due to health problems I will no longer be able to finish this model. So this is now for sale in the condition you see it in from the latest photos.

This is the wooden frame only, but I can also sell some glass cloth if anyone wants that as well to finish the project.

Looking for £350 ono.

Located in Telford, Shropshire, but can take it to the BMFA National Centre, or Weston Park / Cosford over the next month or so.

[Joshua Henderson]

Message sent