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View Full Version : Discussion Milt Boone/Ambroid Charger


JMP_blackfoot
Feb 03, 2009, 02:16 AM
I am going to build a Charger for rudder and motor only flying, from the attached drawing from an Aeromodeller Annual.
There is enough information to actually build the model, except the position of the Center of gravity.
Could anyone give me this information, or ideally has anyone a scan of the original American Modeler article (I believe in the 1/60 issue)?
I'll be powering the model with an Enya 15 III, with a modern radio system.

In the meanwhile, as a re-introduction to single-channel flying, I am finishing a scratch-built Owen Kampen Whizard for Cox .049 power and Ace Pulse commander radio with Adams actuator. The only modification is a built-up wing instead of the foam one. I chose a Naca 3315 airfoil which is as close to the original airfoil as I could figure.

Trisquire
Feb 03, 2009, 11:29 AM
JMP blackfoot, Those look like two interesting projects. Unfortunately, I don't have Charger plans

Tom

No Step
Sep 24, 2009, 11:30 PM
I've always liked the Ambroid Charger. Did you build it yet? Start at 30% for CG,.. adjust from there.

Snorks
Sep 25, 2009, 02:43 AM
JMP - Did you finish the Pinocchio biplane?
cheers
Simon

JMP_blackfoot
Sep 29, 2009, 03:16 PM
JMP - Did you finish the Pinocchio biplane?
I am a bit ashamed to have to say I haven't finished it yet. The first picture shows how far I've gone.
However, time wasn't lost to aeromodelling.
I did finish another dear project of mine, in the shape of a "DAD". This is a model designed in 1942 by Jean and Robert Guillemard, who called it JR-6 or JRG-183.
A version of the model was published in 1946, after it was used by Jean Guillemard in the 1945 French record days. Flying first, the model established or beat all three records (Duration, Altitude and Distance). This is where it was given the name "DAD" - or more exactly "D.A.D." under which it became one of the great classic post-war French model designs. A later version with lengthened nose and provison for R/C was published in 1960.
This is a model my friend and I had built in 1956 (He was 15, I was 13) and flew free-flight with a Taifun Rasant engine and 23x15 Audax prop (a narrow blade 9x6 wooden prop). We had many ROG flights with this model and it was a wonderful experience.
Last year, we decided to built each a replica. His flew in July with electric power at 1300 gram weight (9x6 prop), mine flew two weeks ago with a Taifun Zyklon engine at 920 gram weight ((11x4 prop - 7400 rpm, 2800 idle - 9oz/sqft!!). Both fly every bit as majestically as the original.
I have attached pictures of his and mine.
This being said and done, Pinocchio has been promoted to the top of the building list again, and I won't forget to keep you informed of it's progress.
I still plan to control it by upper wing incidence change (servo installed in the rear of the fuselage hatch) and sub-rudder, so as to keep the tail assembly exactly as the original.