Servo for MRR2
 

Hi,
I'm new on this forum so don't go too hard on me if i made a mistake.
I need advice on what type of servo i should buy to use with a MRR2 frame (mini road runner 2 junior kit) from xpress.
I'm setting up my first rc car and i don't really know how to shop for a servo.
I know i cannot buy any kind of servo too because this chasis has this in the description:
Steering servo (Width<20.6mm, Length<38mm)

Thank you in advance for your help.

Am i in the right section of the forum ?

I know this is an old thread bump, but certainly applicable for anyone searching for this advice, albeit 7 years later, ha!

I recently picked up an MRR2 and have been begun evaluating it here:
http://www.ultimaterc.com/forums/sho....php?p=2232333

The manual doesn't specify what size servo it needs, however I found that a standard servo won't fit with the pre-drilled holes in the chassis. My kit didn't include any servo mounts either. I found that a mini servo will fit nicely:
http://www.hobbyking.com/hobbyking/s...05sec_34g.html

https://farm8.staticflickr.com/7602/...1a9040fc_z.jpg

Only problem is that the servo mounts I'm using in that pic are 7mm thick (threaded holes 3.5mm on center), and I'm in the process of custom building 6.5mm mounts with holes 3mm on center from the wall of the servo to get a perfect fit. I'll be updating the review thread later this week after I finish milling custom servo mounts with my CNC.

I think you can use the servo of Power Star!It has a small servo~

got a link to the power star with dimensions?

I finished milling some custom servo mounts and have a nice tight fit, I also backed it with a standard size servo to get perspective on how far it hangs on the side of the chassis if someone tried to use a standard servo setup, which could be possible with some modification:

https://farm8.staticflickr.com/7607/...eaba5cc2_z.jpg

I'd be willing sell mini aluminum servo mounts, or a 2mm carbon brace to extend the servo mounting holes to fit a standard servo if anyone happens to have any interest.

You can look this store.Power star

Those servos are 36mm wide too, so that would be a perfect fit as well, thanks!

On another forum, a guy had recommended using a floating servo mount from the B44.3 so we could use a standard servo ;)

http://demonpowerproducts.co.uk/images/B7-203B.jpg