Holy Stone HS510 propellers replaced but rubbing? SOLVED

[bitshift]

I crashed this afternoon and damaged one of the props. During the process of replacing it I noticed it looked different than the others.
Duh, there are two pairs of props. Not all 4 are the same. Helps to read the manual!
So after getting the right props on the corresponding motors, I turned on the quad.
It sounds as though either the two of the props are hitting each other or one or two props are hitting the body.
What can I check?

 

[davidhk129]

I crashed this afternoon and damaged one of the props. During the process of replacing it I noticed it looked different than the others.
Duh, there are two pairs of props. Not all 4 are the same. Helps to read the manual!
So after getting the right props on the corresponding motors, I turned on the quad.
It sounds as though either the two of the props are hitting each other or one or two props are hitting the body.
What can I check?

Suggestions only. Educated guess at best.

The props can in no way "rubbing" each other UNLESS the arms are not fully extended.
Since you had a crash, I would suggest that......
1. Inspect the rest of the props whether they are "properly" attached. Could they have been slightly "pushed" too far down?
2. Remove all 4 props. Run the drone. If you hear the rubbing sound, the damage is within the body.
3. Install one prop and turn on the drone. See if you hear the rubbing sound. If no sound, remove the prop. Install the 2nd prop, run the drone to check for the rubbing sound. Repeat procedures on the 3rd and the 4th prop.
That's all I can think of at this time.
P.S. I do not own a HS510.

By the way, your HS510 does not come with prop guards, does it?

 

[bitshift]

Thanks for the suggestions. I flew the drone again for just a few min and I could still hear the noise. It was obious that one or more prop was "hitting something". Remarkably, there was no apparent effect on flight, but after landing and turning off the motors, It was clear that something was wrong with one of the props. Note, this was AFTER flight not before. It does not appear to be striking the body. The marks on the other props are from a previous run in with a tree limb.

Ive got some more props on the way.
Edit: I think I discovered that at least 2 of the props were not mounted right. There is a flat spot on the shaft that requires the prop be installed a certain way. However, it was only this prop that seems to have the issues. We'll see if this still happens when I get the new prop on.

 

[bitshift]

Hooray, I solved the problem! Turns out it wasn't the blades themselves, but rather one or two of the arms on one side were not fully extended.
Diagnosed the issue by taking off all props and putting each back on at a time. It was just one one side when both props on that side were put on that the "clacking" noise started again. Ruined one of my new props that just came in during the process. Oh well, live and learn.

Hope this helps anyone else that runs into this. This drone is remarkbly durable!

Note to self: Hey dummy - make sure the arms are fully extended before turning them on!