In the good old days when we were building tow line and chucks, the art of trimming the model was drummed into us. It sounded boring and we paid scant heed. As long as it flew, what the hell?!

Here are some fine examples of beautifully trimmed models. An art by itself, it makes Radio Control seem lame.

Rubber Powered Twin Junkers Ju 88:



40" span Avro Lancaster - 4 Engines:

It is dying a natural death with the profusion of ARFs/RTRs and Radio Controllers.

Was relevant during the days of free flight

I plan to resurrect it with my Hobbyzone Champ. I want it to do a full circuit and land near me when I take my hands off the controls.

Cheap Jedi tricks! Do it without the controller and show us!

Need the controller to take off, other than that - challenge accepted.

Nice!    I'm interested too, although I'll have to find a large indoor space.

Wow amazing! Getting my rubber powered Jetstream to fly properly was tough enough. This is waaaay too much.

Quote from: VC on June 02, 2013, 10:14:03 PM

Rubber Powered Twin Junkers Ju 88:

Quote from: VC on June 02, 2013, 10:58:46 PM
Need the controller to take off, other than that - challenge accepted.

And no using of The Force

Found a nice guide to trim a plane:
http://nsrca.us/documents/trimming/TrimmingChart.pdf

Ouch! I had forgotten all about this.

OMG....I could not believe that it is not at all controlled and its powered by rubberband only...
Great

How do they perfect the synhronisation of rotors.

That is truly a great art.

Cheers
Asupan

Awesome !!!  Unbelievable !!! Hats off to the gentlemen.... Now talk about the gyro controls and what not.

 
Masta

Talking about trimming....  Me and my uncle are working on a chuck glider...  According to him back in the day there were hunter kits available that when launched in head wind would do a immelmen turn and glide in tail wind... 

As of now we are able to get the immelmen turn but it keeps climbing and stalling in its glide path.....

Any suggestions for trimming that...?.??

Vc
Even in rc models trimming is an art, trim changes with, type of Aero foil, cg, Centre of pressure, use of flaps etc. a good aeromodellor will and need to trim the Aeroplane in all conditions of flight, this art too is IMHO a lost art, today people trim once and don't touch the trimmer after and blame the airplane for not performing. Yes, trimming is indeed a lost art,