Ouch, I hope your diver is going to make good on this unfortunate problemYes that is a great question!!!!!
Diver put new zinc on prop then next time I took it out I lost it
I haven't heard of a zinc on a prop. Mine is on the strut and drive shaft. I would think a zinc on a prop would cause an imbalance and fall off.Yes that is a great question!!!!!
Diver put new zinc on prop then next time I took it out I lost it
Some props ahve zincs, for instance the MAXPROP. If it is a MAXPROP I can't for the life of me see how installing or removing a zinc on a one of those could possibly lead to the loss of the prop. The zinc on a MAXPROP screws into the hub and there is no need to mess with the shaft prop nut.I haven't heard of a zinc on a prop. Mine is on the strut and drive shaft. I would think a zinc on a prop would cause an imbalance and fall off.
I have seen others loose their prop. After propeller is inserted the nut is tightened to push the propeller in. Then a castle nut is installed and to prevent the castle nut from loosening a cutter pin is inserted. If the installer forgot or neglected to install this pin, or if it rusted and fell off then the castle nut will fall off and the retaining nut will fall off then the propeller will come off.I can't help with the prop size, I am just wondering how one loses a prop? did it just fall off?
We had our yard remove the OEM prop, and I installed a Flex-o-fold, so I’m not too well versed on how to handle the fixed one. If you’re looking to take this opportunity to upgrade I will say the Flex-o-fold installation was quite straightforward and I would recommend it.Davidasailor26 - Any advice on the install? I am a DIY so would like to install it myself.
The whole purpose of a castle nut is to allow a cotter pin to secure the nut. I know of no installation of a castle nut that does not also call for a cotter pin. If its just another or second nut that is generally just referred to as a "stop nut."I am pretty sure this uses a castle bolt but no cotter pin. Still researching.
Beneteau uses a tab washer that bends over the shaft nut on outside and sits in groove on shaft ,no cotter pin . The anode screws onto the shaft nut .Over tightening the screw that holds the anode will shear the tab most likely the inner one thats sits in the shaft grovve . Now there is nothing locking the nut ,spins off and prop comes off tapper on shaftThe whole purpose of a castle nut is to allow a cotter pin to secure the nut. I know of no installation of a castle nut that does not also call for a cotter pin. If its just another or second nut that is generally just referred to as a "stop nut."
OP says "he thinks it uses a castle nut" , Beneteau does not they use a tab washer and special nut as I posted. There is no hole drilled in shaft for cotter pin. I have a kiwi prop on my boat that uses a groove in the nut that 2 set screws in the prop go into with thread locker .They lock the nut and if they came loose both would have to and the groove still prevents nut from coming offOP said it uses a "castle" bolt. I have seen the tab arrangement for locking but that is not referred to as a castle nut. I was simply responding to the OP's statement that it uses a castle bolt (I assumed he meant a castle nut).
The tabbed washer serves the same purpose as the cotter pin on a castle nut. I can see how overtightening the anode might shear the tab in the grove on the shaft.