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can I send you an invoice? KIDDING!! I have 400mm arms on the way, and may make a simple fun/practice quad on the cheap with the 370mm (I'll put that in another thread). I have a feeling an undergrad intern, or myself, or anyone else new to all of this is going to be awfully intimidated by the...

Yes, that makes much more sense. Serves me right for ordering frame parts before I had the rest of the rig sorted.

hahahaha, usually my goofing around involves looking at a computer screen! it hasn't gotten physical.

hahaha! goofing around meaning studying whether I can get away with the arms I have or not. I'm certain now that if I need 15" props, I need 400mm arms. I should have just ordered them in the first place.

obviously not or I'd have a better idea of its dimensions :-D

looking at my (unassembled) frame with 370mm arms I think the 795mm number must not be the number I was thinking it was. They say "diagonal" and I'm trying to figure out the distance between the motors. Oh well, my opportunity cost for my goofing around with arm size is now higher than the cost...

one dude on diydrones says: "According to a white paper published by the University of Maryland Rotorcraft Engineering professor J. Gordon Leishman, two rotors overlapping by about 27% might be more efficient than if they were aerodynamically separated. It seems that the CH-47 series "Chinook"...

awesome, thanks! I do have spreadsheets but need to add weight. Yeah, I have 315mm light legs as a backup so I could run it without the legs if necessary. OK fellas so with 370mm arms we have 795mm (31.2992in) motor to motor. Is ~1.2" between props playing it too close and I *need* 400mm arms...

I have the QuadFrame light legs. Alternately if I use a QuadFrame gimbal, I would hope to use the fancy rotating legs, so similar weight there. Yeah I know. I am going off of what KDE suggests. In my fiddling I am using 3200g without drive in ecalc, just to standardize on your guess. I have...

Wouldn't they be just about the same if you compare apples to apples (3rd axis for QuadFrame, but without the rotating legs), or no? It is possible the "custom" 24P InfinityMR motors are heavier, but I'm not sure that's the case. Other than that they are dimensionally similar.

I'd better start saving pennies, or maybe my kids will lend me some from their piggy banks ;)

how do we reconcile "Good" cooling, since in ecalc this is the difference between having a workable config and not?

I know the camera will be heavier (body will be, but I'm not sure between Rokinon 12mm vs. Sigma 19mm glass, will check). But the gimbals should be about equivalent, I would think.

or smaller prop, right? I need to decide: go to, say, a SunnySky motor with a higher spec and cheaper 40A ESC for example in the place of KDE (impact: potential risk due to components which may be lower grade, more noise, harder to balance, etc.?) step down to maybe 12" prop? (In my...

for this rig I am limited to 14" props due to the arms I ordered. I could always use these for a fun quad or something and get longer arms to allow for bigger props. How big are you thinking, and would that be the most cost effective way to cut that temp?

cool. These guys? I think they may make the KDE ESC's, no? So the HW may be identical.

seems like using all those same numbers and going from 3510-475kv to 3520-400kv opens things up, The motors only cost a little more, but we'd also (according to KDE) need the crazy 55A ESC's so altogether the cost goes up a LOT. Otherwise... smaller prop? I'll try to figure out AUW vs. yours...

Thank you for checking!! Would a lower kv motor or something else best account for that?

Alright here's a rabbit hole for you guys. Some related questions: Many people power gimbal/vtx/etc. using a separate battery. For me if I'm buying expensive 6S batteries I'd like to keep it simple and just use BEC to power those, and I guess an LC filter to avoid noise. Am I missing something...

awesome, thanks. I'm sure I'll figure it out eventually, just being obsessive trying to understand every detail. I think my config is a pretty common one aside from adding custom sensors/imagers so we could cook up an AUW pretty easily. For now we can assume KDE 3510 475kv, t-motor cf 14"x4.8...