Master AirScrews Replacement Issue

CorralesDan · Sep 4, 2021

I just received the new Master Airscrews propellers for the Mini 2. I easily replaced 3 props, but when I got to the fourth, I can't get the screw out of the DJI propeller. I tried everything I know, but it won't budge and I worry about stripping the screw head. I finally put the DJI props back on, did a test flight and everything is fine.

Before contacting DJI, I thought I would see if anyone here has a suggestion I haven't thought of, which is possible.

Thanks, Dan

Starz · Sep 4, 2021

One possibility may to run the aircraft for a full flight. Motor will then be at its highest temperature. Try the screw when it’s hot.

netfolks2000 · Sep 4, 2021

Start putting a drop of penetrating oil on that screw daily and then try it again.

Capt KO · Sep 5, 2021

If you don’t care about possibly ruining the dji prop, just heat it to remove the screw. Even a hair dryer will work.

CorralesDan · Sep 5, 2021

Starz said:
One possibility may to run the aircraft for a full flight. Motor will then be at its highest temperature. Try the screw when it’s hot.

Starz, that sounded like a good possibility. I flew it this morning until the low battery warning came on. I immediately turned it over and tried to remove the screw. Still stuck. Thanks anyway.

Starz · Sep 5, 2021

I’ve never found a bolt or screw that I couldn’t remove with these little gems.
There are cheap versions, but stay away from them and find the good ones.

https://www.amazon.com/Extractor-Stripped-HassleFree-Hardness-63-65hrc/dp/B08PCT9WBB/ref=asc_df_B08PCT9WBB/?tag=hyprod-20&linkCode=df0&hvadid=475689981997&hvpos=&hvnetw=g&hvrand=9839821176621218431&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9030262&hvtargid=pla-1188945619381&psc=1

55Kevy · Sep 5, 2021

@CorralesDan I, too, had some difficulty removing a couple of the blades when I installed the MAS stealth props. I was using the screwdriver MAS supplied and was concerned that I'd end up stripping the head. So I then used the 'driver that came with the 'fly more' package and it seemed to fit the DJI screws better. I got them all off.

BTW I've flown the AC about an hour now with the MAS props and don't really notice a sound level difference.

Starz · Sep 5, 2021

55Kevy said:
an hour now with the MAS props and don't really notice a sound level difference.

The very reason I’ve not contributed to the MAS organization.

CorralesDan · Sep 5, 2021

Starz said:
I’ve never found a bolt or screw that I couldn’t remove with these little gems.
There are cheap versions, but stay away from them and find the good ones.

https://www.amazon.com/Extractor-Stripped-HassleFree-Hardness-63-65hrc/dp/B08PCT9WBB/ref=asc_df_B08PCT9WBB/?tag=hyprod-20&linkCode=df0&hvadid=475689981997&hvpos=&hvnetw=g&hvrand=9839821176621218431&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9030262&hvtargid=pla-1188945619381&psc=1

Starz, thanks. I checked Amazon. I'm not sure I have seen a set with an extractor small enough for these propeller screws. They're pretty small.

CorralesDan · Sep 5, 2021

netfolks2000 said:
Start putting a drop of penetrating oil on that screw daily and then try it again.

Netfolks, I'm giving this a try. I want to be careful not to get any oil in the motor. I'll let you know if it helps.

CorralesDan · Sep 7, 2021

netfolks2000 said:
Start putting a drop of penetrating oil on that screw daily and then try it again.

It worked. I put some penetrating oil on the screw edge for three days. I was careful to put the oil onto a cotton swab to apply to the screw edge so the oil wouldn't get down into the rotor. I appreciate the suggestion.