Drones have many mores rpmā¦ 30000 rpm
Direction is not importent!
Without much thought, Iām pretty sure that itās not the number of revolutions per minute, per hour, etc. that matters, but only the engine torque and the propeller work done per revolution.
All the propellers I now carry, even for airplanes, are left handed.
No, Piaggio Avanti is a pusher plane 
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Well I prefer CCW props, as my shaft and Flipsky Maytec are regular threated. Makes no difference in performance, but I lost a CW prop already, even it was secured with a nylstop nut. Ok it was not new and used a couple of times, but anyway go for standard and provide CCW Prop;-)
as long as you have power on the motor, the propeller will stay on the shaft even without a nutā¦the propeller is pushingā¦only when ābrakingā there will be any pressure on the nut, but even so the propeller and the nut usually turn with the same speed(at least it should 
) so there is no torque from the propeller to the nutā¦A normal nylock will not come loose from a turning shaft, there is no significant turning force on it, the force is on the cotter pin or splines in the propeller.
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The problem only arises if there is mechanical backlash between shaft and prop. Then any prop will loosen the nut, regardless in which direction it turns. Then also a nylock will loosen. But there is a solution: Nord-Lock Wedge-Locking Products - Nord-Lock Group
I would expect that the shear pin or however it is called would be shoot to eternity if the prop get lose a bit. For FR and Shadow prop the cavity is kind of flat, but the threaded shaft is long. If the pin is gone, the prop canāt turn anymore so I guess it should be secured?
However, I never had issues with cw or CCW props. But I do check the nuts by time (@Toto44 any comment on this?)
I see nothing more happening at seahorse.si? So I assume this shop does no more exist, correct?
Hi guys, thatās not true. Seahorse is still alive and so are we.
I have been in touch with countless CNC companies to be quoted for during 2021, all of this to be able to sell props for under 200ā¬.
Sadly, after that much time I still havenāt found a good company to partner with for low quantity (50 pieces or less).
Right now, if we produce 50 pieces, we wonāt be able to sell them under 250ā¬. Which is pricey for good reasons (raw material, hard anodizing, electricity price,ā¦). This price doesnāt include freight and vat.
But, if we have more than 50 orders on this first batch, we can do a one time price of 160ā¬ / piece. The only issue being the fact that we would need more than 50 orders,ā¦
Hit me up if you guys think we can start a 50+ props batch. Otherwise Iām still looking for new cnc prices.
Happy new year to everyone!
FWS
Note : CW vs CCW is totally up to what you guys want in the end. I personally prefer CW but we can produce in whatever you want as long as everyone agrees.
Easyfoil already sell their props for under 200ā¬
They have a 6" for 149ā¬ and the 7" prop for 179ā¬.
Best regards
Being totally honest, with no intention to bash anyone, you simply canāt compare 2 products like this because :
- Our products are designed from scratch rather than simply 3D scanning something existing on the market and sell it back. You see this simply by the geometry alreadyā¦
- Easyfoilās clone propeller looks like MJF printed (or similar 3D print technology) in metal rather than milled from a solid aerospace aluminum blockā¦
- Price difference when machining a 6, 7, 8, 9 or higher pitch propeller compared to another pitch is almost non-existent for this diameter. A 5 axis mill machine will do the job exactly the same way at roughly the same price. (We have all these pitches available and more btw).
What you think you know 
Material, and that the Easyfoil Prop is scanned etc ā¦
You donāt know anything, itās all just speculation!
I donāt even know if you are serious at least about the fact that Easyfoilās propeller isnāt copied from Flying Rodeo / Lift. Iāve been in this forum long enough to know FR was the first in the game. If you have any doubt about what he said, you can check FRās posts back in the daysā¦
LOL. Isnāt this what a diy forum is about 
? No joke, we can say whatever we want but companies arenāt allowed to speak frankly?
Openly yes, but not unfair!
Especially when it comes to business.
Which material z. B. Easyfoil or Fr uses, nobody knows without a material sample.
Not unfair ? Saying they havenāt been working on this seriously from the start, laughing when they said they cfdāed the design to be optimized but they still want them to be validated in the field, yes this also looks fair to me .
I donāt need a material sample to differentiate a 3D printed raw part from a milled part 
(not saying easyfoil is 3D printed, Just speaking)
Easyfoil is a milled part, not printed 
Hi,
fair points.
We also make our propellers on a 5-axis machine from 7075 aluminium (is that your solid aerospace aluminium block material?)
We have produced a 5.5" pitch with 44mm hub. This is not available anywhere else on the market. (See Picture)
So weāre not copycating anyone
But thatās your threat here with your propellers.
Happy New Year @everyone
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This looks really niceā¦ especially with that small hub. it looks very thin as well. This sould really have great effeciency 