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I am still a bit confused on the 3-blade prop thing myself. I read great things about them and that if you use the 15" DJI props it is like flying a 16" prop but there is a loss of efficiency. But with my setup I get slightly longer flight times with lower throttle hover position with 2-blade...

I can run 16" just fine of the 400mm arms, they are close but I don't think too close. I'm getting ready to right now as soon as the rain and wind stop. That$108 is a heck of a deal. Helidirect is good as far as I know. I have ordered things from them in the past and not had a problem. It's...

I should have separated the add. Payload definition. There is nowhere to insert payload (that I see), it just outputs that add. Payload number on its own. That's why I include it in the model weight. My interpretation of add. Payload is that is the amount of extra weight you can put on it and...

@Motopreserve - I am deviating from the topic but is relevant since OP is considering this gimbal. How are you doing with the quadframe v2 gimbal and CP? I can't seem to get my dampening system (v3 from quadframe) to allowing the camera to bounce/wobble. I finally got the chance to test it...

I include the weight of the gimbal and camera in the model weight. Here are their definitions for: All-up Weight: Calculated Flying weight (Basic Weight + Drive Weight, add payload is NOT Considered.) add. Payload : Maximum additional payload possible to hover with 80% Throttle to garantee...

You could always run a 16" prop. Also, I went and looked up the weight of the Tattu 16000mah 15c and it is 1931.7 g. So I adjusted the weight per cell on ecalc configuration. I know your pretty set on KDE motors, but when I was putting my build together I spent hours running different motors...

I was wondering about that 1.2" number with 15's on 375mm arms. I have the 400mm arms and I'd say there is about that or a little more between the 15" props. I know with the 16" props on the 400mm there is only around 15mm gap.

I was able to find my spreadsheet for the build. I would go with these weights, most are from manufacturer but others I weighed myself. Some things there I have changed. I only have a 2-axis gimbal so going 3-axis will added a good bit more weight too. Keep in ming things like wire (=heavy) and...

I figure your going to have somewhere between 600-800g more weight than what I have with the InfinityMR, GH4, and FPV equipment. What sort of landing gear are you thinking? Retractable will be more weight too. I'll be fair and only add 700g to my model weight for a total model weight of 3200 g...

Quadframe v2 is ~670 g and infinitymr is 1120 g. multistar batteries are slightly lighter than tattu. and you plan on having fpv equipment. What im getting at is all this adds up to additional weight fast. In my mind a research copter needs to fly longer than one for aerial photos and video...

I was thinking the 3520's with 15" props.