jstrach

What servo could I use to fit tray with 1 3/16" x 13/16" (30mm x 21mm) openings? My S3114 is far too small but S3004 is much too big. It's for a Great Planes J-3 ElectriCub II and the Tower Hobbies site states to use a mini servo (which is why I bought the S3114s). Any recommendations would be helpful. I want to adhere to these dimensions if possible since the wing mount is already installed.

jetmech05

You say one servo is too small? can you glue in a piece of wood to mount the smaller servo? Remember torque of the servo is a requirement more than size...

jstrach

I can modify the tray mounts so the S3114 servos will fit, but I'm curious if there is a different servo they had in mind for the kit? Plus the S3114 talks about not using it in large planes; I doubt this qualifies as a large plane...which leads into your following point. I remember reading the torque requirements which is why I went with S3114 also. I will confirm torque and probably modify mounting trays accordingly. But there is no in-between servo size between standard (S3004) and mini (S3114) right?

Hewey19

How about a 3115?  It is slightly bigger then a 3114 but no where near standard servo size.  You can get the dimensions off towerhobbies.com. 

jstrach

Hewey19, that's the perfect solution. Thank you!! An S3115 Ibelieve is the dimension that was intended for the plane's trays. But each servo is $5 more than the S3114; so I'll just change the wing servo. Thanks again!!