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Servo Size

#1
Hi, I’ve just found your site and am going to build one of the speed build Spitfires.
your power pack C uses 9 g servos with a torque of 21 oz/in
i have some 7.5 g servos in my spares box, which are the same size, but only have a torque of 16 oz/in.
Will these be ok or should I buy some 9g servos with the extra torque
Thanks
Brian
 

mrjdstewart

Well-known member
#2
which spitfire? the old one or the masters series? the old one you will probably be fine, the new one i would get the larger servos due to the increased size and weight.

good luck,

me :cool:
 
#4
It’s the old one with the swop able power pack although I think I’ll build it without thar being removable. I’ll go for the removable wing though. Is there a build log or forum from anyone whose build it with a fixed motor radio etc
 
#6
You should be able to find the MG90 (metal gear 9 gram servos) for about $2 each shipped from china if you order 4 or 8 units at a time. Since free shipping from china often takes 6 weeks (sometimes longer), I'd use the servos you have for now, and have the MG90's on their way for the next build.
 
#7
Have you had any quality issues with the $2 servos from China. I assume they dont have any brand name on them or are there ‘local‘ makes to look out for
 
#9
Have you had any quality issues with the $2 servos from China. I assume they dont have any brand name on them or are there ‘local‘ makes to look out for
I've never had a problem with these $2 servos. They center well, and MG stands for metal gear which hold up a lot better than the plastic gear ones. I have these on pretty much everything I build that is big enough to use a 9g servo. Combat planes, large 60+ inch wingspan planes, and I've never had one fail on me except for wires that got ripped out or cut in combat/crashes.

I just looked at one and they are model MG90S (not previously stated mg90). They have a purple color label. Slightly higher than $2 currently on banggood, but they go on sale often. You may also be able to find a deal now if you search on aliexpress.
https://www.banggood.com/4-X-MG90S-...ne-RC-Helicopter-Car-Boat-Model-p-961967.html