The Gearbox is almost identical to the 'Rat' apart from one extra idler gear which is the same size as one in the Rat.
I set the mesh up by eye, my Dave is quieter. It almost sounds like the pinion is too far away from the spur but it is not.
I am going to try a B4 spur and slipper pads in the next few days as I believe that these fit which a little shimming.
Thanks for your comment on teh motor I have a couple more brushed and brushless I will have a go with those to see if that makes any difference.
Ta for now.
I will let you know how I get on.
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