Hi. Newbie here probably doing something stupid but need a little advice. I have 2 midnight pumpkins, the first I built last year (lockdown project) and can 100% stock with 5kg steering servo and standard servo saver as supplied in the kit. This model has been great fun on rough ground, tarmac and even drifting on gravel. the steering servo is great smooth, quiet with no electrical chatter at all. No issues with this pumpkin apart from the body mounts.
I have just built one for a friend and this pumpkin came with a 15kg metal geared steering servo in the box. After around 2 minutes of running on a smooth concrete surface I lost all steering. When applying the brakes at speed these pumpkins always do a bit of a handbrake turn which will obviously put some strain on the servo but this has never been a problem on my original pumpkin. I popped the body off and the steering mounts have both cracked leaving the steering servo flopping around. This is the second time this has happened and I have replaced the chassis already when the previous one broken.
No idea what's gone wrong here. Is the steering servo too powerful or has the servo saver failed? Should I be using the Tamiya high torque 51000 servo saver or should I pick up a 5kg servo despite and remove the 15kg supplied with the kit? I checked the chassis during assembly and it was solid with no cracks.
Any help much appreciated. I've loved my own pumpkin but feeling bad for a friend who's pumpkin is sat their looking sorry for itself. Annoying thing about the chassis being wrecked is you have to virtually rebuild from scratch!
Any help much appreciated!