Slic Ric
lvl.2
Flight distance : 4393 ft
United States
Offline
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Thanks again peeps for your responses and sticking with me on this. It's been raining here so I didn't have much of a chance to get out.To clear any confusion... I flew into the fronds of a palm tree and wrapped each prop up. It held until I could get my ladder and simply "unwind" the fronds. I have never hit anything solid. After a bench inspection, and a hover in the garage, I thought everything looked good. I flew once or twice and that is when I noticed the prop's white stripe was scraped. I replaced it. A few flights later I noticed marks to the prop, the body and the sensor housing. THAT is when I stopped flying and jumped on the forum.
I wish I could multi-quote so participants get notified. Excellent responses. I hope you all stay tuned.
ephektz : pictures below. You'll see I use the rule starting at 46cm because that is the edge. With a new prop, resting the rule against the front of the fuselage (rule is 2.5mm thick) the highest prop edge to ground is 8.1-8.2cm. This matches the other side. The arm has no marks, may have been from the paint stripe maybe.
Henry M.Y. : Thanks for letting me know that I needed to be more clear in the steps I have taken to sort this.
DRONE-flies-YOU : I always go for both, but speed first :-)
Bekaru Tree : Thanks. It makes sense that the motor is out of alignment. The misalignment of axis of the spindle (rotor mast, shaft) would explain why the prop is hitting one end only. If it were simply loose it would hit both ends.... I mean... right? I did take a few pictures (above). after your comment, I placed a spark plug gap tool around, under the (what do you call it? prop coupler?) and I "see" no variation.
Tombolian : I ran out of props so I did in fact swap from the starboard/aft first. The issue follows the motor. I agree the flex from "lift" should bend the prop upward. You can see this in large heli rotor blades during takeoff or load lift. If the "lift" is pulling the end of the arm toward the body, the arm's mounting point being the axis of travel, then the blade will move closer to the body. But this would be a noticible amount of play in the mounting point of the arm I would think.
QuanthonyTrang : I don't see it. But that seems to be the top vote.
RobDownUnder : I agree. I will do a test flight a few minutes from now.
I never mean to come off in a "matter of fact" way. I'm trying to bounce my finding off of the forum and see what comes back.
This is my first quad, but I've built/flown dozens of R/C planes and stilk have my old Kyosho Nexus 30 (back when "YOU" had to control stable flight. LOL) I'm just trying to figure this out as methodically as I can with the help of all of you.
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