Comp-ARF Extra 260 (3M) Questions?

[Hector]

Just Order mine a few days ago, and I was Woundering how much necesary is the 3rd Servo on the wing if You're using HS-5955 TG servos.

Also the elevators, why 2 servos on the elevators and only two in the wings if the surface area is much bigger?? Could I only use 1 servo en the elevators or not (HS-5955 TG).

Any input in this matter would be greatly apritiated.

Regards,

Hector

[Hector]

Any Insights???? Comp-Arf guys??

[Extra260]

I just ordered mine acouple days ago to. I will be putting two 9152's on the aileron's (the only reason I got these is because I got a great deal other wise they would be 5955's) and 1 5955 on each elevator and 3 5955's on the rudder. The ailerons dont need 3. They are top hinged and are very rigid. The plane is normaly tail heavy so putting 4 servos on the elevators is risky. You just have to run the elevator servos on 1.25" arms.

[wmat7039]

	Quote: Originally Posted by Hector
	Just Order mine a few days ago, and I was Woundering how much necesary is the 3rd Servo on the wing if You're using HS-5955 TG servos. Also the elevators, why 2 servos on the elevators and only two in the wings if the surface area is much bigger?? Could I only use 1 servo en the elevators or not (HS-5955 TG). Any input in this matter would be greatly apritiated. Regards, Hector

Hey Hector.... I now have 92 flights on my 3m 260 & she flies well. Here is my set-up:
1 (JR 8711) per elevator
2 (JR 8611A's) per aileron (Both on the phenolic plate near the wing root)
3 (JR 8611A's) on a SWB Rudder tray.

I won't get into a Hitec/JR comparison.... I can only tell you what works for me. I don't see a need to use 2 servos in each elevator as this will increase your tail-weight considerably. Make sure that you use metal arms all-round.
Wayne
Sew Busy
http://www.sewbusy.com

[Hector]

Thank you guys.

Hey Wayne son you went with the 8711, Igues for the 400oz + tork, any gear slop on those??

Also have you seen your aileron flotering in the air due to gear slop??


By the way the main reason that I/m goin with the 5955 is the TG its more resistant to gear slop. I used the JR 8611a's and had this problem on certain servos.


Thanks,

Hector

P.S. Any other inputs or experiences guys?

[excelpoint]

Ive had about 20 flights on mine so far with no probs. My setup is
1x 5955TG on each elevator with 1.25" arms
2x 5955TG on each aileron with 1.25" arms
3x 5955TG on rudder with SWB rudder tray
DA150 and BMB Pipes
28.5X12 Mesjlik 3 blade prop
CG is at 97mm from the leading edge at the tip.

[Asantelices]

Hi,
What SWB rudder tray? offset? 4" or 5" bellcrank

Thanks

[JAX FLYING REBEL]

Please forgive my ignorance guys, but why do you need 3 servos on the rudder?


New Guy

[wmat7039]

	Quote: Originally Posted by Asantelices
	Hi, What SWB rudder tray? offset? 4" or 5" bellcrank Thanks

I used a 4" SWB bellcrank with the off-set built in.

The 8711 have no slop on them up to now with about 79 flights. Previously I had in 8611a's but switched to the 8711 servos. The airplane now has a total of 180 flights.
Wayne

[skymaster68]

	Quote: Originally Posted by Asantelices
	Hi, What SWB rudder tray? offset? 4" or 5" bellcrank Thanks

Hey Andres welcome to the giants !!!! did you know ur planes are coming on the 7th of feb???
Will see you saturday at the club
Rgds
CC

[excelpoint]

	Quote: Originally Posted by JAX FLYING REBEL
	Please forgive my ignorance guys, but why do you need 3 servos on the rudder? New Guy

Being a large rudder having three servo's stops any chance of getting any blowback on the rudder through maneuvers that require a lot of rudder authority such as rolling circles etc.

[JAX FLYING REBEL]

Thanks. I just ordered a 33% EX260 SD kit with a DA-85 and stock hardware. I ordered (6) Hitech 5985's, (1) 5625, and (1) JR8711. I'm not worried about the extra weight of the stock hardware because I think the 85 engine should have more than enough power.