Excellent- I have an RC prop balancer using the same principal, but much to light to handle a 130 cm prop. I would be interested to know what you would charge to provide the shaft as shown and the magnets. I'm sure a local machine shop could duplicate, but you already have worked out the details.
Im dealing with teching people how this works. No need to make it harder than it is. Never heard anyone using grammeter in moments but ill make sure to use newtonmeter next time😉🤣
I balance my lawnmower blade the same way. But i have removed the friction and just balance them on a knife edge. I just put a knife with the handle in a vice and let the sharp side be horisontal and directed up. Then i can just put on my lawn mover blade or boat propeller there and check what way they turn. Alot less work but same result i think. As in a round hole the edge will center it selfe by the help of gravity ☺️
Think i know what you mean. Theres lots of balancers that balance the prop laying flat on a needle or edge. It works fine for balancing the blades but not the hub
Do you also weigh your prop bolts to ensure they aren't introducing vibrations? I'd think if your using washers to balance only the prop you would also want to include the other components of that rotating assembly in the balancing procedure to ensure perfect balance.
No but i assume they are all the same weight and that any difference would be to small to detect on my scale and for sure wouldnt cause noticeble vibration since they are so close to the center. I hardly feel any vibrations now, the top80 seems to be a very good balanced engine.
I am quite curious...do you use those magnets with their polarity going in the same direction on the axis? Is one's polarity inverted from the other? Have you done any experimentation to see if it even makes a difference?...perhaps balancing prop then changing the magnets' orientation to see if the result is different?
Glad you asked, i should have covered this in the video. I built it over a year ago and had forgotten about this dilemma untill now when you asked. I thought about it in the beginning, even asked the magnet dealer about it. They said it shouldnt matter how you install them. I still tried different ways and if theres a difference its minimal but to me it looks like i get the best sensitivity when the magnets are facing eachother with the same polarity, to be clear they repell if i put them together. The balance of the shaft remains the same.
@@rickardjonsson4526 please clarify: as I understand your response just now, you’re installing the magnets on the balancing rig such that they repel each other? (Which I’d think to be the most logical way)
Im not sure but i assume if the shaft is good quality with the same density all around the magnetism would be at the center just like the tips, is that what you mean?
@@rickardjonsson4526 why is it funny? In my country They have machines that precisely balance a wheel. Plane mechanics will have the same device. I just say tyre shop cause most people have 1 in their suburb. Your just guessing. You balance 4 angles. A propeller has 360 angles to balance. A wheel balancer would do that in 15mins. Seems like a waste if time for balancing o, 90,180,270 degrees and not the 355 other angles. You should be able to put it at every angle in that jig and have it not move. Otherwise your cg isn't balanced.
True true but man the top80 is well balanced, i hardly feel any vibrations since i got the balance right. Im 100% buying electric in the future, too heavy for the flight time right now in my opinion.
You really know your stuff. Great job explaining and well done!
Great presentation! These tips works from RC model to real plane props👍
I don't need to balance a prop but I loved your idea and presentation. Well done.
I am interested. Great idea! How soon can i get one?
Great balancer!!!! I want one!
Great vid. Let me know when you have the shafts for sale. Looks to be just what I need.
Thanks for the idea, will use it for balancing my bike wheels :D
Riktigt snyggt jobbat. Och bra förklarat
Har balanserat mängder med rotorblad till helikoptrar med olika 🛠
Detta slog allt
Stort tack👍
Have you decided on producing a few of these ?
Excellent job! Many thanks Rickard!
Excellent! It doesn't get any better than that! Need to know if you get going on making shafts & sourcing magnets.
I will sell them, its in the making. Ill get back to you
@@rickardjonsson4526 can you please tell the dimentions of the shaft ? I cant find eprops official center dimension
@@rickardjonsson4526 Hej Rickard, har du här 2 år senare börjat sälja delar eller helst komplett set? Mvh Thomas
@@A343sk kan ev sälja magneter och axel men inget stativ. Vad vore ett rimligt pris tror du?
Are you still considering selling the shaft and magnets? Would be interested. Thanks!
Excellent- I have an RC prop balancer using the same principal, but much to light to handle a 130 cm prop. I would be interested to know what you would charge to provide the shaft as shown and the magnets. I'm sure a local machine shop could duplicate, but you already have worked out the details.
Try my way 👌, read my comment
Brilliant
Thru and thru
Very interesting, thanks for sharing! One small correction: you are dealing with moments, so it is gram meter, not gram per meter.
Im dealing with teching people how this works. No need to make it harder than it is. Never heard anyone using grammeter in moments but ill make sure to use newtonmeter next time😉🤣
Perfectly balanced, GJ
I balance my lawnmower blade the same way. But i have removed the friction and just balance them on a knife edge. I just put a knife with the handle in a vice and let the sharp side be horisontal and directed up. Then i can just put on my lawn mover blade or boat propeller there and check what way they turn. Alot less work but same result i think. As in a round hole the edge will center it selfe by the help of gravity ☺️
Think i know what you mean. Theres lots of balancers that balance the prop laying flat on a needle or edge. It works fine for balancing the blades but not the hub
@@rickardjonsson4526 i stick the knife trough the hub. Usually put in a plastic pipe to cover the splines in it
What material are you using for your shaft? Great video.
Just standard steel, dont know about hardening
@@rickardjonsson4526 Thank you. I just ordered some bright mild steel for mine.
do you have a magnetic shaft for the Cessna 150 propeller?
Can I purchase this kit from you?
Did you ever look into selling this setup? Certainly is a void for something such as this.
Do you also weigh your prop bolts to ensure they aren't introducing vibrations? I'd think if your using washers to balance only the prop you would also want to include the other components of that rotating assembly in the balancing procedure to ensure perfect balance.
No but i assume they are all the same weight and that any difference would be to small to detect on my scale and for sure wouldnt cause noticeble vibration since they are so close to the center.
I hardly feel any vibrations now, the top80 seems to be a very good balanced engine.
Hey buddy have you already have this for sale
I am quite curious...do you use those magnets with their polarity going in the same direction on the axis? Is one's polarity inverted from the other? Have you done any experimentation to see if it even makes a difference?...perhaps balancing prop then changing the magnets' orientation to see if the result is different?
Glad you asked, i should have covered this in the video. I built it over a year ago and had forgotten about this dilemma untill now when you asked. I thought about it in the beginning, even asked the magnet dealer about it. They said it shouldnt matter how you install them. I still tried different ways and if theres a difference its minimal but to me it looks like i get the best sensitivity when the magnets are facing eachother with the same polarity, to be clear they repell if i put them together. The balance of the shaft remains the same.
@@rickardjonsson4526 please clarify: as I understand your response just now, you’re installing the magnets on the balancing rig such that they repel each other? (Which I’d think to be the most logical way)
@@MarkoGarcia correct😊
How long is the shaft top to tip? And what material is it?
Do the magnets have holes in center to hold the shaft?
Thankyou
Men kan vi se den in action ?
magnetic center is same as mechanical center?
Im not sure but i assume if the shaft is good quality with the same density all around the magnetism would be at the center just like the tips, is that what you mean?
Super🤟🏻
Where do you bought the magnets?
Google neodymium magnets, the ones im using pulls 20kg👍
Hi are you going to sell the shaft as i would like to buy one
Cheers
I will. Its in the making, ill get back to you
I’m interested...
👍
Cool
I'd buy that
Go to a tyre shop and ask them to balance it. They will spin it fast so you get a real balance. Not this guessing game lol
Okey🤣
@@rickardjonsson4526 why is it funny? In my country They have machines that precisely balance a wheel. Plane mechanics will have the same device. I just say tyre shop cause most people have 1 in their suburb. Your just guessing. You balance 4 angles. A propeller has 360 angles to balance. A wheel balancer would do that in 15mins. Seems like a waste if time for balancing o, 90,180,270 degrees and not the 355 other angles.
You should be able to put it at every angle in that jig and have it not move. Otherwise your cg isn't balanced.
@@spacecowboy07723 im sorry dude but you clearly have no idea what youre talking about😄 Thanks for the tips though
chừng nào soi sáng mới chịu show mặt
2 stroke engines will vibrate no matter what... Once we all migrate to electric, then the vibration will be gone...
True true but man the top80 is well balanced, i hardly feel any vibrations since i got the balance right. Im 100% buying electric in the future, too heavy for the flight time right now in my opinion.