In fact, I haven't try it out yet, so you are more experienced than me
But the menu suggests we start from gear ratio 7.5:1, then go lower if the car is too slow. So, I plan to use 48pitch 75 plastic gear, 48 pitch 23 metal gear (75/23 x 2.25 = 7.3), if the car is too slow, I'll change for 24 meatal gear, etc.
For"同捚, 你點裝XBR起車尾, 洗唔洗升高先裝到, 因為真係得好小位", I use a hobby knife to cut out part of the chasis in order to make some room for the XBR |