GliderIreland - Ireland RC Forum - Flying Model forum in Ireland

Planes => Scale => Topic started by: johnfireball on June 14, 2014, 00:04:49 AM

Title: Jodel Bebe
Post by: johnfireball on June 14, 2014, 00:04:49 AM

Just completed my latest build from an old freeflight plan available on outerzone. Setup for rudder elevator and electric power. Hope to maiden this weekend.
John.

(http://www.gliderireland.net/forum/images/uploads/johnfireball/Jodel%20Bebe.jpg)

Title: Jodel Bebe
Post by: Happy Days on June 14, 2014, 08:00:53 AM

It looks very neat John. :clap:  You like powering free flight models don’t you.

I’ve never seen an elastic banded low wing model before. :?:  Did you make the pilot as well?

Of course, you know it wont fly don’t you.   It’s French! :wink:

little Keith

Title: Jodel Bebe
Post by: billscottni on June 14, 2014, 15:34:39 PM

Very nice John. 8)

Keith, free flight models make excellent electric conversions. They're generally designed light and don't need beefed up to take the vibrations of an ic engine   :?:

Title: Jodel Bebe
Post by: johnfireball on June 14, 2014, 23:08:15 PM

Well Keith she flew although somewhat unsteadily (needs some trimming). My carved pilot returned to earth with brown trousers.It's banking to the right all the time even with a trim tab fitted to correct. There is no right thrust on the motor and if anything I was expecting it to turn left due to slight twist in wing. I'm puzzled :?:
(http://www.gliderireland.net/forum/images/uploads/johnfireball/Jodel.jpg.JPG)

Title: Jodel Bebe
Post by: Happy Days on June 15, 2014, 09:25:44 AM

WELL DONE John, at least she flew :D !!! And you have a picture to prove it :clap:

As for her tendency to roll to the right,…….I don’t really understand all the factors about thrust angles. (I’ve never studies fluid mechanics) All I know is that some models need angled thrust (normally right thrust) but it could need to be left, right, up, down, or any combination. :roll:

Of course it might not be prop thrust that’s causing your problem. Prop thrust problems normally become greater or lesser when the power is changed. If your model continues to turn to the right even when the power is off, (when she's gliding) then the prob is something to do with the airframe or balance I’d guess. :?:

L. Keith

Title: Jodel Bebe
Post by: johnfireball on June 21, 2014, 00:54:16 AM

All sorted,
              Flew again in less wind and rudder adjustment fixed all. Now fly's great, nice and stable. Love it when a plan comes together.
John.

Title: Jodel Bebe
Post by: Fred on June 24, 2014, 08:34:49 AM

Another very nice one John!  :clap:  :clap:

By the way, I can't remember, did you fly the small glider?  :?: