XRAY - Model racing cars

The Xray one is part #XMS01MG

With the stock ears, you need one around the same dimensions in width which are...
1.2 x 0.5 x 1.2" 30 x 12 x 30 mm

(so ie the 30 mm)

Hitec 81MG is another.

Without the stock ears, meaning you servo tape and shoo-goo your servo into place, your choices widen, BUT remember that the servo saver only comes with a few spline choices.

I have heard that some of the JR and KO mini digital (really for 1/12th) work as well, but you have to cut their ears off to fit. Otherwise you can go smaller such as the Hitec HS-56B, but you will have to tape that in, and the smaller servos dont have as much torque (I have no idea what the torque requirements are for a mini truck).

We should start a list (if this is ok?)... Be good for the FAQ Im building.

HS85mg fits fine, just need to dremel the top of the ears.

Dude, how did you get the HS85MG in? The centre of the axis is not at the right place.. or is it just me??

Thanks!

With center of axis, do you mean it doesn't line up with the servo saver indent?

The center of the axis is not at the same place on the 85 and on the 81. Plus, the distance between the fixing point and the end of the servo-saver is greater on the 85 than on the 81.
My guess is that you'll have to add a washer or two between the servo holder and the servo to make it fit on the M18.