I've got a 13.5 in mine for indoor and have to say that even at batley where there is a pretty long straight, there is no appreciable lack of pace at full whack.
Obviously different driving styles and levels will cope with different turn motors, but I'd suggest 4.5 is not necessary in a 2wd
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I've got Araldite and a Swiss Army Knife - what more do I need?
Yokomo YZ-2
No 4WD because nothing lives up to my original Optima. Until now maybe?...
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