I still get some comments and DM's on these FlexoFold video's. I took the propeller to a local workshop who fixes bent propellers and such, they found that there where an imperfection in the propeller that made it vibrate (Weight difference in the blades), and that again made it collapse when it had to rely on the centrifugal force to hold it open in reverse. The issue was fixed and the propeller performed great after that. Although FlexoFold did get back to me, they used all their e-mails and a phone call yelling at me for makin a bad video about their propeller than actually helping me and giving me tips to find the problem. Hope this answers your questions. 🙂
Tack för att du har delat den video! Det är dags för mig att köpa ny propeller.Efter har pratat med fler återförsäljare alla säger att Flexofold ser ut modernt men i visa fall kollapsar vid revers. Varifold och Gori blev det!
The centrifuge force created by the rotation wasn't enough for the propeller to overcome the force of the water flow. The solutions could be either increasing the engine RPM or reduce the props pitch. That simple!
Thanks for the comment. Increasing the RPM did not make any difference and the pitch is already set by the manufacturer. Sadly not that simple my friend. 🙂 The propeller got fixed after a professional found an imperfection that made it vibrate and then collapse.
There has to be a design compromise in folding propellers so that when shaft is not driving the water flow 'closes' the blades. I do not have a drawing but there must be some sort of mechanical advantage provided by the shape of the cam which clearly works fine when in the ahead mode but does not provide the same level of advantage when astern - after all the blades weigh the same in both cases. It also makes me wonder if there is an issue with the handing of the blades - if one of them is incorrectly handed it may be the combination of the mechanical advantage is enough to get to full ahead (and drag the incorrect blade with it) while when going astern the lower mechanical advantage just cannot be overcome by one correctly handed blade. But I could just be talking bollocks.😀
As far as I can understand by the video, your propeller is Right but your engine is actually Left (or the opposite anyway). Nothing to do with the size or the weight of the blade.
I still get some comments and DM's on these FlexoFold video's. I took the propeller to a local workshop who fixes bent propellers and such, they found that there where an imperfection in the propeller that made it vibrate (Weight difference in the blades), and that again made it collapse when it had to rely on the centrifugal force to hold it open in reverse. The issue was fixed and the propeller performed great after that. Although FlexoFold did get back to me, they used all their e-mails and a phone call yelling at me for makin a bad video about their propeller than actually helping me and giving me tips to find the problem. Hope this answers your questions. 🙂
Tack för att du har delat den video! Det är dags för mig att köpa ny propeller.Efter har pratat med fler återförsäljare alla säger att Flexofold ser ut modernt men i visa fall kollapsar vid revers. Varifold och Gori blev det!
Thanks for the demo and comparison. :)
LifeisLikeSailing - Vancouver, BC Thanks for watching. :-)
The centrifuge force created by the rotation wasn't enough for the propeller to overcome the force of the water flow. The solutions could be either increasing the engine RPM or reduce the props pitch. That simple!
Thanks for the comment. Increasing the RPM did not make any difference and the pitch is already set by the manufacturer. Sadly not that simple my friend. 🙂 The propeller got fixed after a professional found an imperfection that made it vibrate and then collapse.
Did you hear anything/ know what the problem is?
There has to be a design compromise in folding propellers so that when shaft is not driving the water flow 'closes' the blades. I do not have a drawing but there must be some sort of mechanical advantage provided by the shape of the cam which clearly works fine when in the ahead mode but does not provide the same level of advantage when astern - after all the blades weigh the same in both cases.
It also makes me wonder if there is an issue with the handing of the blades - if one of them is incorrectly handed it may be the combination of the mechanical advantage is enough to get to full ahead (and drag the incorrect blade with it) while when going astern the lower mechanical advantage just cannot be overcome by one correctly handed blade.
But I could just be talking bollocks.😀
Is the new (Eliche Radice ) prop still performs well? any advice on this as I'm just about to purchase on. Cheers
As far as I can understand by the video, your propeller is Right but your engine is actually Left (or the opposite anyway). Nothing to do with the size or the weight of the blade.
i like the underwater photography - good job!
Sailing Nervous Thanks. :-)
put a real prop on it