Print Page - Trimming

Title: Trimming - a lost art.
Post by: VC on June 02, 2013, 10:14:03 PM

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:

http://www.youtube.com/watch?v=1p07mnRZUjs

40" span Avro Lancaster - 4 Engines:

http://www.youtube.com/watch?v=JQ-UPEnDn0g

:bow: :bow: :bow:

Title: Re: Trimming - a lost art.
Post by: sanjayrai55 on June 02, 2013, 10:34:17 PM

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

Was relevant during the days of free flight

Title: Re: Trimming - a lost art.
Post by: VC on June 02, 2013, 10:35:56 PM

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.

Title: Re: Trimming - a lost art.
Post by: sanjayrai55 on June 02, 2013, 10:40:05 PM

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

Title: Re: Trimming - a lost art.
Post by: VC on June 02, 2013, 10:58:46 PM

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

Title: Re: Trimming - a lost art.
Post by: rohitgupta322 on June 02, 2013, 11:11:07 PM

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

Title: Re: Trimming - a lost art.
Post by: veloci on June 03, 2013, 08:05:54 AM

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:

http://www.youtube.com/watch?v=1p07mnRZUjs

Title: Re: Trimming - a lost art.
Post by: sanjayrai55 on June 03, 2013, 08:14:23 AM

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

Title: Re: Trimming - a lost art.
Post by: maahinberi on December 11, 2013, 06:45:08 PM

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

Title: Re: Trimming - a lost art.
Post by: VC on December 11, 2013, 08:48:49 PM

Ouch! I had forgotten all about this.

Title: Re: Trimming - a lost art.
Post by: santhosh-r on December 12, 2013, 04:50:46 PM

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

Title: Re: Trimming - a lost art.
Post by: asupan on December 12, 2013, 07:55:46 PM

How do they perfect the synhronisation of rotors.

That is truly a great art.

Cheers
Asupan

Title: Re: Trimming - a lost art.
Post by: essaargee on December 12, 2013, 08:49:18 PM

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

Title: Re: Trimming - a lost art.
Post by: Aeroempire on December 13, 2013, 10:27:39 AM

(:|~ :thumbsup: :hatsoff: :o :o :o
Masta

Title: Re: Trimming - a lost art.
Post by: AEROVISHWA on December 13, 2013, 08:50:04 PM

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...?.??

Title: Re: Trimming - a lost art.
Post by: rcpilotacro on December 13, 2013, 10:18:47 PM

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,

RC India

RC Equipments => Tools, Materials and Building Techniques => Topic started by: VC on June 02, 2013, 10:14:03 PM