Right. Quick update on this. Cap pack has definately done the trick, no more cogging. With either the zippy 8000mah 30c packs or nanotech 5000mah 65c packs.
Turnigy 7.5a uBEC also installed, plugged into the Rx. Interestingly, I first removed the on/off switch for the uBEC, and it didn't work. Re-soldered the switch back on, and it works fine???!!!! Any reason for that anyone??
Running 16t pinion, and temps were nice and low. Less than 40 for both esc and motor. Will get the log data soon and have a look at that.
5000mah doesn't last very long. I'm going to get some more packs when funds allow and run 7s in parallel so 2 x (3s + 4s). Has anyone tries that??
And finally, I just need to find some rear tyres that will grip on Tarmac!!
Thankyou all sooo much for all your valuable input. If it wasn't for this forum, I would have flogged the sodding thing. Instead, I have learned loads, am loving the badger as well as my other cars and am thinking about my next project . . . .