Thanks Peter, this was just something I wanted to try to see if it's even possible to build.
Came out lot better than I would have expected, like I said the miniguide is brilliant with this car.
The brass bearing should have been longer in the rear so that they would been in touch with the wheels.
Little axle play in both ways now but works like that too.
Motor is small 10 mm x 10 mm square 6 pole, little smaller than Barc motor and much better than any N20 motors that I have tried.
https://www.ebay.com/itm/2PCS-for-Mineb ... 1438.l2649
Dan warned that he had burnt bunch of these with 12V, I haven't yet but I haven't tried these that lot.
Alpine A310 that was in Little Monte Rally is equipped with one of these and it still runs.