Props - Carbon Fiber or Alternatives?

KevanKevan · Sep 11, 2018

Tried looking for performance props, such as carbon fiber or other 3rd party propellers.

Anyone find them?

Found these on eBay, but asked the seller to confirm materials as the images look plastic:
4Pcs DJI Tello Quick-release Durable Carbon Fiber Propellers for DJI Tello Drone | eBay

Cheers,
Kevan

stewe12 · Sep 12, 2018

I am waiting for my Tello to arrive (ordered the boost pack), but I already started searching for upgrades - motors, propellers and so.

I found this test: Propeller shootout for 8,5x20mm brushed motors (Thrust Tests on Racerstar 8520) - RC Groups

It is test of propellers on upgrade motor for the Tello, but I am not sure about the stock size of the propellers.

Can you please measure the size of the stock? I am trying to do my research, but I am missing some technical data...

HawkLS · Sep 12, 2018

stewe12 said:
I am waiting for my Tello to arrive (ordered the boost pack), but I already started searching for upgrades - motors, propellers and so.

I found this test:

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Propeller shootout for 8,5x20mm brushed motors (Thrust Tests on Racerstar 8520) - RC Groups

It is test of propellers on upgrade motor for the Tello, but I am not sure about the stock size of the propellers.

Those propellers are 55 mm in lenght but Tello's are 75 mm.

stewe12 · Sep 13, 2018

That will be not so easy to find something different, but there are some. I have found for example these:

75mm 7.5cm Props Low Speed Propellers Blades Props A B For 1mm Motor Shaft R/C Spare Parts Access Small Mini Quadcopter Drone
or
4pcs K155Y 5mm Helicopter DIY Plastic Propeller Screw For Model Motor Aircraft Helicopter DC Motor High Quality On Sale

The diameter of the shaft is 1 mm or 1,5 mm?

Edit:

Found this with great reviews:
Banggood propellers 75mm

HawkLS · Sep 13, 2018

stewe12 said:
...

The diameter of the shaft is 1 mm or 1,5 mm?

...

The shaft's diameter is 1 mm.

stewe12 · Oct 14, 2018

I received these: Banggood propellers 75mm

They are heavier than the stock ones and have more thrust. I tried them in pretty strong wind and the stabilization on Tello was able to hold position better than with the stock ones. I flew them only on one battery, but I got feeling, that they might be a slightly quieter than the stock ones.

Ansia · Oct 14, 2018

stewe12 said:
I received these: Banggood propellers 75mm

They are heavier than the stock ones and have more thrust. I tried them in pretty strong wind and the stabilization on Tello was able to hold position better than with the stock ones. I flew them only on one battery, but I got feeling, that they might be a slightly quieter than the stock ones.View attachment 1822

I just purchased these props, only because of your review, which I enjoyed. Thanks for that. Only question I have is battery life. How much do you loose with these?

stewe12 · Oct 15, 2018

Oh ****. Such influence

Regarding battery life I am not able to tell you any numbers as I didn't tested it in any comparable way. But heavier props and more thrust should mean more current and quicker drain of the battery.

I will try to measure them in the afternoon, if weather will be suitable.

Edit: I have written d a m n not anything vulgar.

Ansia · Oct 15, 2018

stewe12 said:
Edit: I have written d a m n not anything vulgar.

This made me laugh hard

KevanKevan · Oct 15, 2018

I'm ordering those blades as well.

Also, just ordered these in black: 4pcs Quick Release/Lock Propellers CCW CW Props Blades For DJI Tello Mini Drone | eBay

And these in blue: 4pcs Quick Release Propellers Blades Prop For DJI Tello Mini Drone Accessory WB1 | eBay

stewe12 · Oct 18, 2018

I flew a little bit more with these. And I love them! Tello feels much more responsive to me. But I flew them after a small mod.

I wanted to make them lighter. So I took wire cutters and cut off the tip of the propeller. This makes them the same height as original Tello props. The tips together from all four weighted a bit more than I was expecting. Probably because the material is much better than original props. It is some kind of polycarbonate or something like this. Pretty tough to cut through.

This is how they look after the mod:

Ansia · Oct 18, 2018

stewe12 said:
I flew a little bit more with these. And I love them! Tello feels much more responsive to me. But I flew them after a small mod.

I wanted to make them lighter. So I took wire cutters and cut off the tip of the propeller. This makes them the same height as original Tello props. The tips together from all four weighted a bit more than I was expecting. Probably because the material is much better than original props. It is some kind of polycarbonate or something like this. Pretty tough to cut through.

This is how they look after the mod:

View attachment 1847

That's really interesting. I have a small scale that measures grams. Once I get my props. I will stary shaving, trying to match weight and see what happens. Thanks for the info.

KevanKevan · Mar 14, 2019

Martin · Oct 29, 2021

Ansia said:
That's really interesting. I have a small scale that measures grams. Once I get my props. I will stary shaving, trying to match weight and see what happens. Thanks for the info.

Martin · Oct 29, 2021

I have read that the thrust of a propeller is related to the angle and surface area of the blade not length but read more because their is an equation. I am on the same path and know that the red Tello Talent propellers are 1/100 of a gram lighter which wouldn't work the motor as hard.