RE: HELP!!! 100+ recoil
a 8900kv will go wayyyy faster ..
casue i think IMO that any BL motor has enough torque to go top. it just matters on how much runway. and battery.
a 8900kv is like 20% faster and that is ALOT!!
a 4S w/biggest lipo you can fit 4S 2200 20-30 C will easily get you to 100MPH is a SMOOTH OPEN airplane hangar or sumthing
where no object or WIND interfers .no cracks... etc
do you have anywhere where you plan to run it ?