Sure a 14 would work but with a 14 tooth pinion at 90% peak power the HS might be a little high. Lets have a look at the old HS Calc, these specs are based on different C battery ratings but all 14 tooth pinons and 12S Configs:
Result for calculation: 35C 12S
Estimated lowest voltage during flight: 40,92
Lowest RPM (due to voltage and efficiency) : 2000
For + performance, keep req. RPM below: 2070
For target performance, keep req. RPM below: 2153
For - performance, keep req. RPM below: 2215
hmmmm looks pretty good actually, lets have a look at 45C
Result for calculation: 45C 12S
Estimated lowest voltage during flight: 41,76
Lowest RPM (due to voltage and efficiency) : 2041
For + performance, keep req. RPM below: 2112
For target performance, keep req. RPM below: 2196
For - performance, keep req. RPM below: 2260
Yep that looks o.k indeed, 14T is a goer with that motor. Lets have a look at a 65C setup just encase.
Result for calculation:
Estimated lowest voltage during flight: 42,48
Lowest RPM (due to voltage and efficiency) : 2076
For + performance, keep req. RPM below: 2149
For target performance, keep req. RPM below: 2235
For - performance, keep req. RPM below: 2299
Bang on I recon. Now all these stats are based on a governed motor i.e. using a v-bar or ESC gov, the HS will be much higher in each senario if the motor is not governed which I personally would not recommend.
Regards,
Justin