EASY FIX: 3 ways to fix loose props - how to secure propellers on micro brushed motors

A propeller flying off the motor shaft is one of the worst things that can happen to us, micro quad flyers. Whether it is due to manufacturing error or due to mounting and removing a prop for a few times, it is a problem that needs a PROPer solution.
After trying all possible fixes, including refrigerating the props, heating and manipulating the hub and using various types of adhesives, these are the 3 ways I have found to be working consistently on several props and micro quad weights.
Personally I prefer the “Fill+Drill” method, since it results in props with the exact same fit, every time, all the time. I have yet to experience a propeller flying off the motor shafts, even in hard crashes.
This is EASY FIX: 3 ways to fix your props - how to secure propellers on brushed motors. Let's go!
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You can find the hand drill set I am using (complete with 20pcs 0.3-1.6mm drill bits) here:
--- Handy inventory: Micro propellers for brushed motors ---(last update: Nov'16)---
------ From 45 to 46mm:
3-Leaf Upgraded Propellers
Eachine 3-Blade Propellers
Eachine X73 Propellers
------ From 50 to 56mm:
2627 Propellers
Eachine (QX911 Hubsan style) Propellers
Eachine (QX911 Ladybird style) Propellers
Eachine 55mm Fluorescent Propellers
Eachine 55mm Propellers
Eachine QX90 QX80 QX95 QX100 Propellers
Eachine X4 and QX series Propellers
Gemfan 50mm ABS Propellers
H107-A02 (Hubsan) Fluorescent Propellers
H107-A02 (Hubsan) Propellers
H107-A36 (Hubsan) Propellers
H107D+-A02 (Hubsan) FPV X4 Propellers
H107D-A06 (Hubsan) Propellers
JJRC 1000A-06 Propellers
KH107C-008A Propellers
V232 and X4 Propellers
Walkera QR Ladybird Propellers
YI ZHAN X4-04 Propellers
------ From 60 to 66mm:
DM007 Propellers
Eachine E40G RC111-4 Propellers
Gemfan 65mm ABS Propellers
GW007 Propellers
Kingkong 65mm Propellers
------ Above 70mm:
75mm Propellers
75mm Propellers with caps
Eachine 75mm Propellers with caps
Keep in mind that, the lighter your micro quad is, the less likely the props are to fly off the motor shafts.
Concerning the Dental Floss fix, my experience has shown that some propellers cannot handle the extra pressure on the inside of the hub. In this case the hub becomes a weak point and might fail during a crash. I have had plenty of genuine Ladybird props that have broken right on the hub, especially when using more than 1 pass of dental floss. Your mileage may vary, consider this just a word of caution.
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