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	kuhn Site Supporter	Joined: February/08/2009 Bulgaria Posts: 2986 IP Logged
Posted: August/29/2017 at 4:03am		Quote

My 21 year old, own design, P40 Warhawk.
Still giving tons of pleasure/pressure.

https://youtu.be/8tJPxep3dk8

Some details.
I bought a magazine and the scheme was of the cover and an article inside. This plane flew in Italy and crashed into the sea just after take off. It turned out that a parachute had been stuffed into the front of the cowl as an act of sabotage. Pilot survived.

Model details.
I started drawing the plans, by hand, on a drawing board, after hours at work in April 1995 and started construction in November that year. This was in Johannesburg South Africa. I finally finished the model in Bulgaria in 2009 after dragging it from Johannesburg to Cape Town to Dublin and finally to Bulgaria in 2007.

Specifications.

72" wingspan.
OS 120E 20cc four stroke on glow fuel & on board glow, NimH 4300 mAh, 1.2 V battery.
16X8 2 blade Master Airscrew prop.
Home made fiberglass spinner. It's actually my Hawker Typhoon kit spinner.
Balsa/ply fuselage. White wood glue and epoxy.
Polystyrene wing core with 1/16 balsa covering.
Own design brass oleos crushed on maiden flight. Changed for Sierra retracts and better 6061 T6 alloy home grown oleos.
Air frame covered with Koverall, ironed on, then fiberglass "flour" (like dust) mixed with sanding sealer into a paste, then smeared on and sanded smooth.
Acrylic paints with artists oil paint and pastels weathering.
Water based Polyurethane satin fuel proofing.
Cockpit completely scratch built. Instrument faces are photocopies from a book.
Canopy is from my own plug and is actually a coke bottle shrunk over the plug in the oven. Sliding bit is flat acetate sheet. Sliding canopy frame is from the bottom edge of large calendars. and is a folded aluminium strip.
Weight 6.5 Kgs or 13 Lbs.
Pilot from Blue Box Toys. Pilot officer J.J. Parsons.
Has been repaired numerous times over the years. mainly the gear.

Some stills from the video.

Takeoff.

Fly past.

Gear check.

Touch down.

Oops! Wing lift.

Power up for go around.

Clawing for altitude!

OK ... Phew. Leveled out.

Turning onto final.

Touch down ... Again.

That eureka moment.

"Almost lost it there around the stall and flair".

Debriefing.

The magazine that got it all started.

Hand drawn plans. No CAD in those days.

The office.

Throttle quadrant, rudder/elevator trim wheels.

Canopy crank, radio.

Joy stick, floor.

Seat. It's a plastic milk jug with ali tube frame. Seat harness is elastic.

Bit of wiring and a few push rods.

Cowl shutter lever, emergency hydraulic pump and map case. Knobs, switches and buttons.

Engine bay. Home grown exhaust.

Tail wheel. Pull - pull steering.

Fiber glass cowl under going some repairs.

I want to build a bigger one with a fiber glass fuselage like I my Hawker Typhoon kit but have other priorities now.

I'll post again here to show my repair of the wings after the maiden undercarriage crush and crash.

Keep well yahall.

__________________
Kuhn

If in doubt. Don't!
Flying: HIGH!
Building: Getting my Mo Jo back slowly to finish a few projects.

	Beechdrvr Lifetime Site Supporter	Joined: November/19/2014 United States Posts: 18 IP Logged
Posted: August/29/2017 at 5:21am		Quote

Looks great! Nice job

	kuhn Site Supporter	Joined: February/08/2009 Bulgaria Posts: 2986 IP Logged
Posted: September/02/2017 at 12:03pm		Quote

As Commanding Officer of the 59th Fighter Pursuit Squadron flying out of Tenevo Bulgaria, it is with great sorrow and regret that I have to inform you of the immediate demotion to Flying Cadet of Lieutenant Pilot Officer J. J. Parsons, pending an official investigation into the cause of the disastrous "incident" which occurred at approximately 0:1300 Hrs today. Lieutenant Parsons was on a search and destroy mission against enemy aircraft raiding from the North. Eye witnesses said that shortly after take off and a circuit around the field, the engine suddenly failed. Lt. Parsons, who survived the "incident" confirmed this, adding that all electrical control and communication was lost. As can be seen from the appended photographs, the damage is extensive and according to the aircraft's Crew Chief, Sargent Erwin, "may be repairable, given the resources, time and spares".
Lieutenant Parsons shamefully added that he was extremely sorry and should he be allowed to fly again. It would not happen again.

Yours Sincerely,
B. Umsore (Major).
C.O. Tenevo Fighter Pursuit Sqn.
Bulgaria.

R.I.P

__________________
Kuhn

If in doubt. Don't!
Flying: HIGH!
Building: Getting my Mo Jo back slowly to finish a few projects.

	abufletcher Site Supporter	Joined: March/11/2004 United States Posts: 9789 IP Logged
Posted: September/02/2017 at 12:20pm		Quote

Quote: kuhn

...This plane flew in Italy and crashed into the sea just after take off. It turned out that a parachute had been stuffed into the front of the cowl as an act of sabotage. Pilot survived.

Perhaps a more in-depth interrogation of pilot officer Parsons is called for. My condolences to Sargent Erwin.

	NOI53Y Moderator Group	Joined: January/11/2012 Australia Posts: 2237 IP Logged
Posted: September/03/2017 at 6:33am		Quote

Terrible to see such a nice craft go down but I must say the debrief notes are top notch

__________________
Glenn Ryan

Currently flying - A bunch of stuff
Currently building - BUSA 1/4 Scale Pup
Future build - Now that's a good question haha

	kuhn Site Supporter	Joined: February/08/2009 Bulgaria Posts: 2986 IP Logged
Posted: September/03/2017 at 6:57am		Quote

Thanks Glenn,

I bet it put a smile on your face

.

Crew chief Erwin has started the total strip down of the nose section and has informed me that the OS 120 E "Melvin" engine has a bent crank shaft.

Engineering has been organised for it's repair.

__________________
Kuhn

If in doubt. Don't!
Flying: HIGH!
Building: Getting my Mo Jo back slowly to finish a few projects.

	kuhn Site Supporter	Joined: February/08/2009 Bulgaria Posts: 2986 IP Logged
Posted: September/02/2019 at 9:57am		Quote

It's been two years and Crew chief Erwin has been hard at work in the recovery and re building department.

He has been sending Division HQ updated progress reports including photographs of what has been done and where the money has been spent!

This is his story, told by me. His mate!

Removed the whole front of the fuselage as it was essentially already broken in two. Striped off all of the old Koverall, broken bits, set it up on my stand, sat back and thought.

The cockpit floor back to the front of the seat was removed and as much of the 1/64 ply wing seat was retained.

The wing fairings were originally built from expanding foam on top of polystyrene then fibre glassed. This was dug out.

I decided to re build the front in two sections as can be seen from above. From the cock pit to the mid cowl is basically straight lines so was easy to get straight.

This is the first original section being spliced back into place along the wing seat line.

Keeping things level and plumb.

Light ply doublers were epoxied to the original ply fuselage sides at the wing seat level

to strengthen the broken joint.

Then taller light ply cockpit sides were epoxied to the inside if the formers from

behind the seat to the front of that first section, on both sides.

Balsa stringers were replaced with Bass wood stringers ensuring plenty of over lap with

original ones for stronger glue joints.

New former in front of the first section. This resulted in a tank bay box structure.

Stringers being set up for the next section to be re built.

The stringers lower than the cockpit canopy level got double stringers too.

This piece was a temporary brace for the broken wing seat crutch repair and was removed.

Moving forward with stringers.

Sorting out the position of F2 and where the stringers land.

Needs to go a liiiiitle to the right.

Side view. Looking good.

That's it for now.

__________________
Kuhn

If in doubt. Don't!
Flying: HIGH!
Building: Getting my Mo Jo back slowly to finish a few projects.

	branded Lifetime Site Supporter	Joined: October/29/2013 United States Posts: 1550 IP Logged
Posted: September/02/2019 at 12:38pm		Quote

Oh, don't be so hard on officer Parson......Maybe he couldn't manage given the runway is so narrow and short.....

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