I was very disappointed with the quality of the HET motors I got for the Saab. Imprecise engineering lead to the mount holes being off centre. Additionally there was a lot of play in the motor shaft resulting in noticeable movement off centre when installed in the wemotec micro fan. Running resulted in scraping at certain parts of the throttle curve.
I’ve replace the HET motors with donsrc.com 6000kv. Build quality is excellent mounts are true and there is no slop at all when mounted in the micro fan housing. Next step will be to test run them.