I went to the LHS today to buy two control rods and walked out with two control rods ...and the Futaba 2.4gig 7C I'd been coveting.

I'm currently using a 72MHz 7C and have a few planes stored within. Should I duplicate the settings in the new transmitter or just start from scratch and work out each plane afresh? In other words, should one expect the same settings in the old unit to produce the same flight characteristics in the new unit?

There's not THAT much to set up I guess (trim, throttle cut, timers), but it's an interesting question anyway...


J

Just duplicate the settings in the new radio. The only difference between your old 72 Mhz 7C and the new 2.4 7C is the frequency that they transmit on. Other than that they are the same.

Ken

I picked up a spare 9CAP a while back and I coppied my current settings over to the new to me TX. I've yet to fly it, but from the bench test, there may be a click or two of trim needed at most. You should expect the same. Enjoy your new radio.

Don

Excellent. Thanks, guys!

It was A big surprise to me because I was always told that TXs were all different and it wouldn't work. When I was building A lot of planes for other people I always set there plane up in my TX just so the servos were at least close to center and I was able to make up the control rods and what not for them.
I have the 9-C and most of these people did too. We finally tried setting up another 9-C radio with the same settings that were in my radio and they were perfect when it was time to maiden the planes.
A big surprise for me. I now wonder if I can set up A plane and transfer my setting to something like the JR 9303 without any trim problems.

There are a couple differences. Expo is one that comes to mind. With a Futaba, - expo is soft in the center, while JR + is soft in the center. I think that as long as you kept this in mind and made the approiate corrections, you should be able to transfer the setup over. Just remember that there are some variances however small between two radios of the same make an vintage. They are very minor, but they do exist. You should be within a couple clicks of trim though.

I crashed my first 4*60. I built a second and set it up mechanically the same as the first. Same servo types, a different receiver, but the mechanical setup was the same. I made no TX changes for the new plane. The first flight only took a couple clicks to put things the same as the first plane. Electronics today allow a very narrow band differences between components. It is not unreasonable to think that if you tell a servo to move 25 degrees on a Futabe or on a JR, that it should move 25 degrees. You may have a slight linear movement difference due to the stick pot difference, but it should be very close.

Don

Don, good point on that expo. I had forgot about the plus and minus thing between JR and Futaba. I set up my one students plane with his new DX7 and when I set the trims in the air for him that little hot rod was A hand full. Scared the heck out of the kid too. One of the guys at the field mentioned it to me and that little thing really made A difference!! The little things in life that keep us on our toes.

I was out to the field this morning. First day in the last tfour that it wasn't over 100 by 9am. One of our experienced guys had his jet out today. It's always awsome to watch him fly. He made a long straight up climb, and when he pushed it over, the plane did three loops within the length of the fuselage. We were all standing there watching the remarkable ability of the plane. What a susprise to see a plane that big and that fast be able to do that. After he landed and got it cooled down, we remarking on the manuvre and it turns out he was as susprised as we were. He had bumped a swith the had something to do with the thrust vector he has on it and the loops were totally unintential. I wished I had my video going then.