Bruder Cat Excavator Threaded Rod

[paul1980]

Hi,

Im trying to convert a Bruder excavator using threaded rod but everything i try seems to fail.

The first threaded rod i tried worked but it took forever for the servo to unwind it as the thread was too small. I then tried to use a drill bit but just could not get that to run smooth.

Can anyway tell me where i can buy threaded rod with the correct thread for this conversion? Or even better anyone who makes and sells the parts needed to make this conversion work?

Thanks