I donāt see the issue answering any constructive questions. This propeller will later come with another product weāve been working on, so definitely stay tuned !
Also, we stand behind our products so if you guys arenāt happy with them we will do our best to help you find a suitable solution.
Well the big problem is, you promised to bring a new prop for under 200ā¬. IĀ“m ready to buy one, and use for my build, but I can`t find the prop you are talking about⦠I would even test it and get a metr to share dataā¦
But as you have it not available, I think will try this easyfoil prop⦠At least it is already available⦠and it“s shape looks even better than yours
Because Iām lying in bed with fiver, it is impossible for me to finish the online store at this moment. Be patient guys and let me rest when I get better I will get back to you with a link. Thanks, Jasmin
Unfortunately Jasmin is taking a small break from the business to stay closer to his family and wonāt be available untill then. He should come back soon, but in the meantime I will try my best to temporary take over this part as well.
I have been forwarded all the MPās and emails from Jasmin and Seahorseās webshop and will try to answer you all as soon as possible. Kindly send any further question / proposal to me by MP untill Jasmin comes back.
In the meantime here are few informations I can already share :
I am sorry to make you wait so long, I am still awaiting one last quotation from the CNC company and agree on planning before starting the production.
I should be able to answer you begin of the next week about when you guys can order from us.
I see some of you are cautious about the props, so I will certainly pick one or two persons from this chat to send one free propeller to be reviewed before anyone can order more. I am ready to invest in the community if community helps us back as well
I see lot of questions about the price. To be clear, target price is under 200⬠but depends heavily on order quantity and CNC quote as well. I got few quotes but none of them is ok for me right now. Hoping the last one can make a difference as we plan to work with them for lots of other parts as well.
It is great that the number of commercial propellers that can be bought in the EU (without customs fees and expensive postage) will be expanded. Itās just a shame that you changed everything about the propeller, even the direction of rotation of the propeller. After all, all successful e-foil propellers use a counter-clockwise rotation direction. There are a number of reasons for this. Clockwise rotation has no hydrodynamic or mechanical advantage.
One of the reasons is that most engine shafts are right-hand threaded!
I once heard a wiseman saying that you need to think āout of the boxā to innovate. Doing so obviously requires to think about everything from scratch, hence having a very different design.
Rotation direction is purely personal preference. CFD shows no real gain / loss in efficiency. @Ackermann tried both a CW and CCW prop from us. To my knowledge there was again no gain or loss from it.
Also, all you need is a nylstop nut and you are good to go, whatever your shaft thread direction. Drones have been using them forever with very few fails despite the higher RPMās (I have been using 2450kV motors at 4S and never had any loose propeller, even after countless crash).
Someone already posted here on the forum that he lost the propeller, I think it was aluminum. Definitely had a nylstop nut. And of course drones canāt be compared to the performance of e-foil engines - 1 m3 of air has a mass of about 1kg, 1 m3 of water has a mass almost 1000 times greater. Clockwise rotating propellers are only used in exceptional cases.
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.
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;-)