brianc93 Registered User Thread OP

Quote: tedbyers Originally Posted by Brian,



I am not familiar with the motors you're using. But 60 g isn't much, though it's a good improvement over an 0820-15 coreless motor turning Hubsan props (which are only 55 mm long). What size prop are you using? If your airframe can support 3" props, and can mount an RX1104 (from RotorX), you'll get a lot more thrust than that.



I was communicating with a guy down under who's experimenting with using ducts as prop guards as you're using rings. What he found was significant improvement in thrust, provided he printed the ducts with good tolerances (he was working with quads more than twice the size you're working with though).



I do hope you release the files, not only so others can print them, but so I can learn how to load it into CAD software so I can modify it for my experiments with ducted fans with annular wings around the top of each duct.



I recall one of your posts in which you mentioned possibly making a hex, and I'd encourage you to do so, just to see how well it works, but I would add a Y6 or X8 (the purpose of the extra motors being in part to improve payload so you can, e.g. carry better FPV gear or a bigger battery (for longer flights). If you don't, I will, in due course, after I learn how to use CAD software and a 3D printer. (so much to learn, and so little time). For the question "Why?" the best answers appear to be "because you can" followed by "why not.



You've done some good, and interesting, work in this.



I didn't use ducts because they naturally stabilize the quad in motion and limit top speed. I wanted this quad to be as nimble as possible with the added weight of the guards. Not to mention ducts would likely add more weight over rings while becoming more fragile. Might work nicely for the micro ap quad though.



I'll probably release a modified STL for abs and pla if enough people are interested, but I'm not currently planning on releasing the CAD file. Either way I think you would have an easier time starting fresh. The rings really don't have much in common with an optimally shaped duct so I'm not quite sure how it'd be modified.



If I had unlimited time and resources then no doubt I would build everything that came to mind, but just this quad alone has taken awhile to get flying properly. Not to mention building so many different setups is really expensive. A Y6 or X8 version would definitely be interesting though. I might give it a shot when I get the time.



Quote: derelicte Originally Posted by Are those motors really $30 each!?! The props are only 45mm diameter. This quad was designed to be as small as possible so 3020 props wouldn't really suit it. However, I have thought about making a larger version for rx1104's. Check out the attached picture. It's just a top plate, but its made for rx1104's and 66mm props. I might change it to fit 3020 props and put it in a standard h configuration instead of rotated 90 degrees. I was thinking it would make a nice micro ap platform for getting proximity shots too dangerous for larger machines.I didn't use ducts because they naturally stabilize the quad in motion and limit top speed. I wanted this quad to be as nimble as possible with the added weight of the guards. Not to mention ducts would likely add more weight over rings while becoming more fragile. Might work nicely for the micro ap quad though.I'll probably release a modified STL for abs and pla if enough people are interested, but I'm not currently planning on releasing the CAD file. Either way I think you would have an easier time starting fresh. The rings really don't have much in common with an optimally shaped duct so I'm not quite sure how it'd be modified.If I had unlimited time and resources then no doubt I would build everything that came to mind, but just this quad alone has taken awhile to get flying properly. Not to mention building so many different setups is really expensive. A Y6 or X8 version would definitely be interesting though. I might give it a shot when I get the time.You can buy a set of 4 with a LKTR120 frame for $100, so $25 each plus you get an LKTR120 if you decide to swap the components over. If you look at the pricing though, it drops pretty fast with volume. We really just need another retailer to start buying in bulk. Images View all Images in thread Views: 2014



