I have a 650 with the Rotax 912ULS. If you have the longer engine mount you should not be out of CG range under most scenarios. There are situations where you need fuel as ballast but i wouldn't say its most situations. Have you double checked your numbers? others on the forums have reported CG issues only to realize a miscalculation. i'm happy to check numbers too.
Stuart Brooks
I have a 650 with the Rotax 912ULS. If you have the longer engine mount you should not be out of CG range under most scenarios. There are situations where you need fuel as ballast but i wouldn't say its most situations. Have you double checked your numbers? others on the forums have reported CG issues only to realize a miscalculation. i'm happy to check numbers too.
Jan 31, 2022