Author Topic: Max Prop conversion to Flexofold  (Read 133 times)

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Obsession

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Re: Max Prop conversion to Flexofold
« Reply #2 on: May 16, 2020, 12:51:15 PM »
I used a Flex-O-Fold on my 44/45.5.  It performed well.  It was a three-blade and the pitch was a 16 or 17.  It was on a 1.5-inch shaft with a standard taper.  They allow at least one free exchange of blades.  I found that the people at the company provided the best information given that they provided many units to owners.  The fact that it does not require continued maintenance is a big plus.  And it cost way less.  Give them a call and see what they have to say. 


Jim Halter

snailor

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Max Prop conversion to Flexofold
« Reply #1 on: May 16, 2020, 02:24:55 AM »
Hi all.

I've heard some of the H46s out there have switched from Max Prop to Flexofold.  Our own Max Prop is due for yet another rebuild and I'm weary of the time and cost of keeping our 19-inch classic going.  We had great success with our Flexofold 2-blade on our last boat so I'm hoping the 3-blade 18-inch will at least equal if not outperform the Max Prop.  Our Max Prop, which is driven by a Yanmar 4JH3-TE with a KBW21 2.17 reduction gear, pushes the boat well under most conditions but with time, the blades loosen on the hub and sometimes vibrate when motorsailing.  While we can overcome this by increasing revs, we'd like to be able to throttle back and let the wind do some of the work. Only another rebuild will tighten the blades and reduce the vibration.  Including the yard bill, the cost to remove, ship, rebuild, ship and reinstall the Max Prop approaches that of a new Flexofold.

We would appreciate having specifics on the size, pitch and other key measurements for an 18-inch Flexofold on any other H-46s and any comments on how this propeller has performed on other H-46s.  We are also having to base the taper on the existing Max Prop so if anyone has the taper and thread measurements for the 1-1/2 inch shaft, that would also be helpful.

Thanks,
Eric
S/V Santosha H-46 #034

 

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