[KStation]

Hi. I just bought a .60 size 3d plane, my first non .40 size, and need to know some servo info. The instructions call for a higher torque servo for the elevator, but I'm not sure which one, there are so many different servo's. I'm using a Hi-tec flight pack. It doesn't say to get these for the ailerons, would I need them there too?
I don't fly 3d right now, I'm not that good, so would regular 425 servos be o.k.?
This plane is called a Passion 3d, I don't know who makes it, but the kit looks alright , just poor instructions.
Just some questions I need to ask someone. Thanks for any help.

Kevin Station

[Guest]

Originally Posted by KStation

Hi. I just bought a .60 size 3d plane, my first non .40 size, and need to know some servo info. The instructions call for a higher torque servo for the elevator, but I'm not sure which one, there are so many different servo's. I'm using a Hi-tec flight pack. It doesn't say to get these for the ailerons, would I need them there too?
I don't fly 3d right now, I'm not that good, so would regular 425 servos be o.k.?
This plane is called a Passion 3d, I don't know who makes it, but the kit looks alright , just poor instructions.
Just some questions I need to ask someone. Thanks for any help.

Kevin Station

Anything with 80 in-oz will do nicely.

[2thelmt]

Try running a 6volt batt, torque and speed will improve. This way you won't need to buy more servos. I run 6V, and standard servos on my .60 sized ships with good results. Both my Funtana, and Twist run 6V high capacity packs. My Staudacher .90 uses the same with the exception of a high torque servo on the rudder-Great knife edge (but not needed)
Ian

[salty morgan]

hi kevin, how have you been?

Originally Posted by KStation

This plane is called a Passion 3d, I don't know who makes it, but the kit looks alright , just poor instructions.

here is a link,
http://www.giantscaleplanes.com/Passion3D_55.htm

morgan

[KStation]

Thanks for the link Salty! That's it!
I think I'll try the 6v battery, but I'm still not sure about all the different servos and where to use what. Are the hi-torque ones bigger than a standard? What's different between digital and standard servos?

Kevin

[Guest]

but I'm still not sure about all the different servos and where to use what. Are the hi-torque ones bigger than a standard?

Not usually, you can get pretty high torque servos in a standard size case....usually up to 150 ish in-oz. From there it varies depending on manufacturer.

What's different between digital and standard servos?

Check out this article by Futaba...

http://www.futaba-rc.com/servos/digitalservos.pdf

[Gary Maker]

Chad

Don't you think 80 in/oz servos in a 60 size plane a little over kill? Hes not going to be using it for competition or even 3D as he said in his post!

About 6 or 7 years back I flew a Goldberg Super Chipmunk using a Saito 91 and only used standard Hitec servos, the older HS300's. That was a very nice aerobatic plane and it really got wrung out and I never had a problem with the servos or found them lacking! I flew it for three summers and finally sold the plane.

Two summers ago now, I had a Sig Cap 231EX and all it called for in servos was 70in/oz range. The plane was 73" span and weighed about 12 lbs all up weight! Here I used Hitec HS605BB servos.

My personal opinion is that if you have the HS425BB servos already then
use them! No need to even consider digitals in that plane unless you don't know how to spend your money fast enough!

[KStation]

Thanks for the servo article Chad. I appreciate all the input guys!

[Guest]

Chad

Don't you think 80 in/oz servos in a 60 size plane a little over kill? Hes not going to be using it for competition or even 3D as he said in his post!

Nope not at all. Sure it will fly fine with probably standard servos but you have more potential for flutter, blow back, servo failure due to higher stress, less precision movement, less predicatable movement etc etc.....

Servos are fairly inexpensive today, so why not put larger servos in?

[Gary Maker]

Thanks for the reply Chad

I have always been of the opinion that one should use the best servo that you can afford but even here, it would depend on what type of flying I was going to be doing!.

I was just thinking that, as he said in his post, he wasn't going to be doing 3D and I asumed that his flight pack was with the 425BB servos and that he was hoping to be able to use them seeing that he already had them. I felt that under the circumstances, the 425 ball bearing servos would be fine for the way he plans on flying the plane and it would save him some money! Maybe I asumed too much!

Don't get me wrong here. I have no problem using high torque servos on any plane. My IMAC plane this year was a Midwest Giles 202 with 73 in span and a Saito 1.80. Here I used HS 5645MG Digitals with 143 in/oz torque. I wanted the digitals for precision, holding power and torque for competition aerobatics. But just for sport flying, I probably wouldn't have used the digitals in this plane!