Quote:
Originally Posted by fidspeed
the fastrax item is similiar the kimborough version was a servo saver ie it was springloaded so in the event of a crash the load was taken off the servo to stop it stripping the gears inside
i have been helping a young racer who has had similiar issues with a mi3
i made sure a replacement arm had the correct splines and issue was resolved
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the Mi2 (at least the one i used to have anyway) has a Servo saver built into the car chassis, so doesn't require a spring-loaded servo saver.. a standard horn will do the job as per the kit, however if it is the kit one fitted, the Futaba (25 spline i think) has an "F" embossed onto it & if not embossed with an "F" it should have other initials such as an "S" to indicate Sanwa, which i think is a 23 spline arm & one marked with an "H" for Hitec.
I had one of those Fastrax servo horns & there are 3 adapters that come with it, so make sure you use the right adapter with the horn with 23,24 & 25 spline conversions depending on what servo you use.. if you have a Futaba or Savox servo or one of the many budget servo's or servo's that come as branded with an RTR car (which are usually rebadged Futaba 3003's or 3004's). then you need to run the 25... Acoms (or Carson), Sanwa & KO usually run the 23 fitting & other than a hitec servo, i'm not aware of any servo with a 24 spline.