the spacer wont make the gear high enought. the buggy has no hole for the spur gear where the truggy the gear has a hole to mount it lower. why would you need a 54 tooth spur gear in the buggy. what are you trying to do with your setup
its so i can run this asap and use the motor i have (hvmaxx 4.5 - 5000kv), i need the final drive ratio around 22:1 , so with 11/54 it will be good, and the speed calc. puts my speed at 40-41mph , 4s mmm and the 4.5 hv motor in a rc8 buggy