Merry Christmas
- Thread starter jimcleary
- Start date
Mitchell S Allen
Active Member
Thanks Jim! Merry Christmas to everyone here. I so appreciate all the help and knowledge from this group. Thanks!
Mitchell
Mitchell
Warren Holybee
Active Member
Merry Christmas. Enjoy the holiday if you can. My boss isn't giving me any time off and I work Christmas day. I also have to come in on my day off on NYE until 1am and then on new years day. I have worked every single holiday this year. My search for a job that doesn't suck every drop of blood from me continues into its 6th month.
My Max Prop arrived today, a Christmas present for myself. It took months to save for it, and it will be several more months before I save enough to haul out and install it, but it is here. By far the most expensive purchase I have made for the boat. When you include the cost of installation, at least 1/3rd of the boats value. At least at California labor costs!
My Max Prop arrived today, a Christmas present for myself. It took months to save for it, and it will be several more months before I save enough to haul out and install it, but it is here. By far the most expensive purchase I have made for the boat. When you include the cost of installation, at least 1/3rd of the boats value. At least at California labor costs!
Happy Holidays to everyone!
Warren - congrats on the new Max Prop! We sure love ours, and hope you do too. You'll need to re-calibrate your backing up strategies, since the prop walk is gone, and I had gotten so accustomed to it, it was strange to be gone.
So you didn't have a folding or feathering prop when you did the Pacific Cup? Geez, you did pretty darned good and if you didn't have folding/feathering prop, you would have smoked it. Sorry you have a sucking job. I hope that changes for the better soon for you!
Warren - congrats on the new Max Prop! We sure love ours, and hope you do too. You'll need to re-calibrate your backing up strategies, since the prop walk is gone, and I had gotten so accustomed to it, it was strange to be gone.
So you didn't have a folding or feathering prop when you did the Pacific Cup? Geez, you did pretty darned good and if you didn't have folding/feathering prop, you would have smoked it. Sorry you have a sucking job. I hope that changes for the better soon for you!
john english
Member
Diameter and blades?
The long hub reduces the space available for collar zinc and cutlass bearing clearance. Do you currently have a drive saver flexible coupling.
The long hub reduces the space available for collar zinc and cutlass bearing clearance. Do you currently have a drive saver flexible coupling.
john english
Member
Don’t forget a drip less packing!
Warren Holybee
Active Member
17", 3 blade. I considered an 18", but not sure about cavitation tip clearance. I have had cavitation before, and want to avoid it. I figure with the Max prop being slightly less efficient, the 17" should be similar thrust to what I have now for a given RPM, and I can up the pitch for better speed. I have a 60hp Volvo engine, so a lot of room for both bigger size and pitch. Hoping to be able to cruise at 7+, and make 8kts all out. (I can just make 8kts now, with lots of cavitation, but cruise 5.5kt-6kt)
I also considered the 4 blade, which is what PYI recommended with my huge engine. But I want good fuel efficiency. Motoring between Panama and SF (which was like $1000 worth of fuel) I got 0.4 to 0.5 gallons per hour at 4.5-5kts. That goes up to only 0.6 at 6kts. That seems a lot better than what those with Yanmar (even new ones) and Perkins report. Since I am likely to be motoring some long distances again, I want to reduce the fuel on my foredeck.
Yes, I have a drive saver, there wasn't enough room for a standard sized zinc prior to my installing it (I had to use a low clearance collar) and I had massive cavitation that was reduced by moving the prop aft.
I shouldn't need a shaft zinc? The prop has one of it's own. But I do want the prop to be positioned towards the aft of the aperture for less cavitation and better performance. Certainly at least center and not forward of it. So I hope I don't need a new shaft. That would add a lot of extra cost, not only from the cost of the shaft and fitting it, but time on the hard. The last thing I want is to be stuck on the hard for weeks or months waiting for something like that. In 2016 when I last had the shaft out I called around locally to have it checked out. There was a 6 month wait for that type of work.
Excluding the location of the larger hub, are the blades in about the same position as a standard prop?
Not going with a dripless system. While it might be nice to not have water in the bilge, the packing is 100% reliable and can not fail. I have graphite packing, which is almost dripless. It is dripless when not spinning.
I also considered the 4 blade, which is what PYI recommended with my huge engine. But I want good fuel efficiency. Motoring between Panama and SF (which was like $1000 worth of fuel) I got 0.4 to 0.5 gallons per hour at 4.5-5kts. That goes up to only 0.6 at 6kts. That seems a lot better than what those with Yanmar (even new ones) and Perkins report. Since I am likely to be motoring some long distances again, I want to reduce the fuel on my foredeck.
Yes, I have a drive saver, there wasn't enough room for a standard sized zinc prior to my installing it (I had to use a low clearance collar) and I had massive cavitation that was reduced by moving the prop aft.
I shouldn't need a shaft zinc? The prop has one of it's own. But I do want the prop to be positioned towards the aft of the aperture for less cavitation and better performance. Certainly at least center and not forward of it. So I hope I don't need a new shaft. That would add a lot of extra cost, not only from the cost of the shaft and fitting it, but time on the hard. The last thing I want is to be stuck on the hard for weeks or months waiting for something like that. In 2016 when I last had the shaft out I called around locally to have it checked out. There was a 6 month wait for that type of work.
Excluding the location of the larger hub, are the blades in about the same position as a standard prop?
Not going with a dripless system. While it might be nice to not have water in the bilge, the packing is 100% reliable and can not fail. I have graphite packing, which is almost dripless. It is dripless when not spinning.