I am interested in replacing my prop on my Hunter 44 AFT boat to a Max Prop. Is there anybody on the forum that has done that. I would appreciate in getting info on the prop size and pitch adj. general comments are welcome.
Max Prop
- Thread starter degol
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AutoStream
I have had only good times with this prop, easy to maintain!!! Three bladed I get 8.5kn on my 56 hp @3200 rpm on my 426 DS. Look It up.. Good Luck
I have had only good times with this prop, easy to maintain!!! Three bladed I get 8.5kn on my 56 hp @3200 rpm on my 426 DS. Look It up.. Good Luck
Vari Prop vs Maxi Prop
I have been doing some research on the difference between the VariProp and the Maxi Prop for my Hunter 41DS. The VariProp's pitch for forward and reverse can be set separately whereas the MaxiProp can only be set in forward. The VariProp also does not require the prop shaft to be shortened whereas the MaxiProp may require the shaft to be shortened so that it fits snuggly. Has anyone installed the VariProp? How does it perform? Have you had any trouble with it? How long have you had it? Did you have any installation problems? Thanks, Second Wind, Hunter 41DS
I have been doing some research on the difference between the VariProp and the Maxi Prop for my Hunter 41DS. The VariProp's pitch for forward and reverse can be set separately whereas the MaxiProp can only be set in forward. The VariProp also does not require the prop shaft to be shortened whereas the MaxiProp may require the shaft to be shortened so that it fits snuggly. Has anyone installed the VariProp? How does it perform? Have you had any trouble with it? How long have you had it? Did you have any installation problems? Thanks, Second Wind, Hunter 41DS
MaxProp for Hunter 44
I am interested in Waldo's response concerning the MaxiProp for his 44 FT Hunter. Waldo, could you please let me know why you have the 18" diameter MaxiProp installed? MaxiProp mentioned to me that they would recommend the 19" diameter MaxiProp VP model for my boat ( 41DS with the Yanmar 54hp engine). The reason for the 19" was due to the performance loss of the feathering prop vs the fixed bladed prop. My 3 bladed fixed prop has a diameter of 18". I have a 2007 Hunter 41DS and am planning on installing the 19" dia MaxiProp 3 Bladed VP model. Your reply would be greatly appreciated. Please also note that VariProp has also recommended their 19" diameter feathering prop for my boat/engine/transmission combination. Thanks, Second Wind, Hunter 41DS
I am interested in Waldo's response concerning the MaxiProp for his 44 FT Hunter. Waldo, could you please let me know why you have the 18" diameter MaxiProp installed? MaxiProp mentioned to me that they would recommend the 19" diameter MaxiProp VP model for my boat ( 41DS with the Yanmar 54hp engine). The reason for the 19" was due to the performance loss of the feathering prop vs the fixed bladed prop. My 3 bladed fixed prop has a diameter of 18". I have a 2007 Hunter 41DS and am planning on installing the 19" dia MaxiProp 3 Bladed VP model. Your reply would be greatly appreciated. Please also note that VariProp has also recommended their 19" diameter feathering prop for my boat/engine/transmission combination. Thanks, Second Wind, Hunter 41DS
MAX PRP
The 18" was based on an e mail from hutch@pylinc.com the max prop supplier in WA state. it is 3 bladed 18"dia for a 1.25"dia shaft. He suggested 13" pitch for the 44-2004 Hunter. But pitch can be adjusted when we take the boat out for painting/cleaning etc. his 800 523 7558
The 18" was based on an e mail from hutch@pylinc.com the max prop supplier in WA state. it is 3 bladed 18"dia for a 1.25"dia shaft. He suggested 13" pitch for the 44-2004 Hunter. But pitch can be adjusted when we take the boat out for painting/cleaning etc. his 800 523 7558
MaxiProp's recommendation
Hi Waldo: I have been sending and receiving numerous emails with Fred Hutchison from PYI and he originally stated the 18" was the size for my boat. I then told him that VariProp recommended 19" due to propeller efficiency losses from the feathering prop vs the fixed blade prop. Fred then agreed and quoted me a price for the 19" and also stated that the 19" would fit on my boat and still have enough clearance between the prop blades and the bottom of the hull. A rule of thumb is no less than 2.75" between the blades and the hull or else you can get vibration and damage done to the hull from the blade wakes. My distance is 2.75" for the 18" 3 blade fixed prop. Fred stated that the 19" MaxiProp is further aft than my existing fixed prop giving the same or a little more clearance than I presently have. Do you get good performance with your 18" prop especially during a high sea state and motoring into the waves? Not sure if you had a fixed 3 blade you were replacing, but if you did, what was the hull speed difference between your fixed and your MaxiProp? Do you get max RPMs out of your engine? What do you think of the 18" vs 19" dia prop? Thanks for this should help me decide between an 18" vs 19" dia 3 bladed MaxiProp VP. Second Wind, Hunter 41DS
Hi Waldo: I have been sending and receiving numerous emails with Fred Hutchison from PYI and he originally stated the 18" was the size for my boat. I then told him that VariProp recommended 19" due to propeller efficiency losses from the feathering prop vs the fixed blade prop. Fred then agreed and quoted me a price for the 19" and also stated that the 19" would fit on my boat and still have enough clearance between the prop blades and the bottom of the hull. A rule of thumb is no less than 2.75" between the blades and the hull or else you can get vibration and damage done to the hull from the blade wakes. My distance is 2.75" for the 18" 3 blade fixed prop. Fred stated that the 19" MaxiProp is further aft than my existing fixed prop giving the same or a little more clearance than I presently have. Do you get good performance with your 18" prop especially during a high sea state and motoring into the waves? Not sure if you had a fixed 3 blade you were replacing, but if you did, what was the hull speed difference between your fixed and your MaxiProp? Do you get max RPMs out of your engine? What do you think of the 18" vs 19" dia prop? Thanks for this should help me decide between an 18" vs 19" dia 3 bladed MaxiProp VP. Second Wind, Hunter 41DS
Autostream for 42DS
I would like to know more about your Autostream feathering propeller that you have installed on your Hunter 426 DS since I am looking to buy a feathering prop. Could you let me know: 1. The age of your prop 2. Where you bought it from 3. What diameter is it 4. What is the fwd vs reverse pitch settings 5. Did or do you experience any vibration at any RPM setting 6. Have you had any difficulties with it (failing to feather, failing to go into fwd, failure to go into reverse, cavitation, vibration, changing pitch settings due to corrosion, or corrosion in general, loud bangs when going into and out of gear caused by blades banging against the stops) 7. How much of the prop shaft did you have to remove to install it Thank you, Second Wind Hunter 41DS
I would like to know more about your Autostream feathering propeller that you have installed on your Hunter 426 DS since I am looking to buy a feathering prop. Could you let me know: 1. The age of your prop 2. Where you bought it from 3. What diameter is it 4. What is the fwd vs reverse pitch settings 5. Did or do you experience any vibration at any RPM setting 6. Have you had any difficulties with it (failing to feather, failing to go into fwd, failure to go into reverse, cavitation, vibration, changing pitch settings due to corrosion, or corrosion in general, loud bangs when going into and out of gear caused by blades banging against the stops) 7. How much of the prop shaft did you have to remove to install it Thank you, Second Wind Hunter 41DS
Autostream 3 bladed feathering prop
Hi: I would like to know more about your 3 bladed Autostream feathering propeller that you have installed on your Hunter 426 DS since I am looking to buy a feathering prop. Could you let me know: 1. The age of your prop 2. Where you bought it from 3. What diameter is it 4. What is the fwd vs reverse pitch settings 5. Did or do you experience any vibration at any RPM setting 6. Have you had any difficulties with it (failing to feather, failing to go into fwd, failure to go into reverse, cavitation, vibration, changing pitch settings due to corrosion, or corrosion in general, loud bangs when going into and out of gear caused by blades banging against the stops) 7. How much of the prop shaft did you have to remove to install it 8. The model number of your prop 9. What material is it made from (bronze or stainless steel) Thank you, Second Wind Hunter 41DS
Hi: I would like to know more about your 3 bladed Autostream feathering propeller that you have installed on your Hunter 426 DS since I am looking to buy a feathering prop. Could you let me know: 1. The age of your prop 2. Where you bought it from 3. What diameter is it 4. What is the fwd vs reverse pitch settings 5. Did or do you experience any vibration at any RPM setting 6. Have you had any difficulties with it (failing to feather, failing to go into fwd, failure to go into reverse, cavitation, vibration, changing pitch settings due to corrosion, or corrosion in general, loud bangs when going into and out of gear caused by blades banging against the stops) 7. How much of the prop shaft did you have to remove to install it 8. The model number of your prop 9. What material is it made from (bronze or stainless steel) Thank you, Second Wind Hunter 41DS
There was a 3 bladed-18" fixed prop when purchased. Primary reason to replace was backing up resulted in a large uncomfortable side force. Did not have a bow thruster and this was to help into a difficult docking procedure. Some speed inprovment, less vibration. The rest is too subjective to offer any comments. There may be some articles on Google on how close a rotating prop should be from a fixed surface.
Max Prop comments
I purchased the 18" version about three years ago. Our boat was a 2001 410 with the 56hp Yanmar. It was suggested by Fred H. to set the pitch to 22 degrees. Once in the water, this was too strong and it was dropped to 20. Afterward, I still lost about a half to three quarters of a knot in cruising speed at 3000 rpm. Also, while under load with full throttle, I'm about 250 rpm shy of reaching the suggested 3850 max. I feel the correct setting for this model should be 18 degrees. One suggestion. If you buy the Max Prop, get the VP model which allow pitch changes while afloat. Also, aside from the above, this prop produced solid performance. The boat sailed faster than with our stock 2 blade fixed. I enthusiastically recommend it. Backing and hard slowing was remarkable. My below web site has a section on this project. John Richard former owner of Jack's Place
I purchased the 18" version about three years ago. Our boat was a 2001 410 with the 56hp Yanmar. It was suggested by Fred H. to set the pitch to 22 degrees. Once in the water, this was too strong and it was dropped to 20. Afterward, I still lost about a half to three quarters of a knot in cruising speed at 3000 rpm. Also, while under load with full throttle, I'm about 250 rpm shy of reaching the suggested 3850 max. I feel the correct setting for this model should be 18 degrees. One suggestion. If you buy the Max Prop, get the VP model which allow pitch changes while afloat. Also, aside from the above, this prop produced solid performance. The boat sailed faster than with our stock 2 blade fixed. I enthusiastically recommend it. Backing and hard slowing was remarkable. My below web site has a section on this project. John Richard former owner of Jack's Place
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