Originally Posted by Eddie P

Hi Jack, your 6s setup is super nice. Would you say an apples to apples comparison could more closely compare with a high power, 10s setup? I'd imagine the weight to be at least a pound heavier for that setup (8.6+ pounds for a 10s 4000mah config with a 4minute 45sec flight time, 8+ pounds installed thrust, heavier for more flight time packs). These guys will have probably more than 9.5 pounds of "installed thrust" (after a half pound thrust loss due to the pipe) and 700mph efflux / exhaust speed. Flight times on the K45 ought to be about 7 minutes from wheels up to touch down with another minute to spare for go arounds but that depends on how heavy they want the first minute of flight to be as they can add or subtract based on preferences - and of course, no one has run the K45 in this setup yet so we don't know what the fuel burn is yet for the average motor.

So for 2 minutes she'll be heavy and for the rest of the flight she'll fly like the electric 10s and lighter the longer she's up, potentially. The last 2 minutes she'll be a light weight scalded cat at about the weight of a 6s electric.

I could see for guys with no investment in electric chargers, big packs to share with other electric planes, etc, this could be a really nice "high power" setup. For most electric guys, the cost of getting a nice light weight 6s or a heavy 10s up and running would be minimal and the performance would be close to or exceed turbine performance depending when you decide to "observe" performance between the two, during the flight... but at shorter flight times.

All that being said, I think even lead thumbs will agree, with smaller jets, the edge on comparison goes to lower flight weight. On bigger jets, it's thrust.

I'm really interested in learning more about the K45 for another jet I'm building right now. It would be a twin engine setup.