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9g servos on Mighty Minis

#1
Hey guys,

I've lately been building some mighty minis since I got the F Pack for Christmas and I was wandering what you all think of using 9g servos on mighty minis? By my research I've found that 5g servos are more expensive than 9 grams. For example, I can get 10 9g's for 13$ on eBay and the cheapest I can find 5g servos is about $3.50. Can someone point me to a link with cheaper 5g servos or what are your suggestions? I'm don't care a lot about them making the plane look a little worse, but is the weight difference really that noticeable?

Vaughn
 
#2
For my mini mustang and similar planes I use a 9 gram on the elevator, skip the rudder and use 5 grams on the ailerons. For planes with only two servos I use 9grams, Just what works for me.
 
#3
For my mini mustang and similar planes I use a 9 gram on the elevator, skip the rudder and use 5 grams on the ailerons. For planes with only two servos I use 9grams, Just what works for me.
Sounds great, I'm fixing to try a long ez on the F Pack with a 3s 850. Probably will need the extra strength of the 9g's anyway cuz' it'll be so fast...
 

Keno

Active member
#4
I see no reason you can't use 9 gram servos. Just enlarge the whole for them to fit sometimes you might have to reposition them, instead of standing lay them down. I did have a problem on the mini arrow as the spar was not large enough at the designed position for placement. there I had to do some design modifications. Just use them where you can and if size is problem then you will have to use one that fits.
 
#7
Sounds great, I'm fixing to try a long ez on the F Pack with a 3s 850. Probably will need the extra strength of the 9g's anyway cuz' it'll be so fast...
You may want to reinforce that single layer wing with a nice spar, the f-pack could literally rip the wings off if you pull any kind of g’s. Oh, and I would scale it up a little, the normal mini-ez with that setup would be a brick and a probably not have enough lift for its weight. Good luck in your speedy mini ez (y).
 
#12
I've ordered probably 30 or 40 servos there, and have had two duds in all of them. That's an acceptable failure rate for me :)

Thankfully those duds were found on the bench before install, I've never had a servo fail in the air.
 
#13
Yup, if they are on the bench then all good. I have never had a failure from heads up, bench or air. two would have put me off forever though. just not worth the risk to me. Good luck!
 
#16
That’s what I just bought... I really like the size of 5g servos but being 15 on a limited budget I usually get whatever’s cheapest.
Just test them on the bench before installing. If there's a dud, it'll not work right out of the box... so if you plug them in and they work fine, you're good to go. Like I said, I've only had 1 or 2 not work out of dozens, so you should be good. Frankly I've had more of the Emax 5g fail than the SG90's.
 
#17
Just test them on the bench before installing. If there's a dud, it'll not work right out of the box... so if you plug them in and they work fine, you're good to go. Like I said, I've only had 1 or 2 not work out of dozens, so you should be good. Frankly I've had more of the Emax 5g fail than the SG90's.
Yep I’ll check em before I put the plane in the air. I’ve ordered quite a few 9gs from eBay that look just like the ones I ordered now and so far I’ve only had one dud.