Re: Stus-List Auto prop
Try a zinc donut on the shaft forward of the prop hub and aft of the strut but touching neither. You will get a lot more time out of the bullet style autoprop zinc on the aft of the hub. I sail with the transmission in forward which keeps the prop from spinning which is annoying to hear and slower. A Universal M4-30 powers my boat. On Fri, Dec 27, 2019 at 10:02 PM Patrick Davin via CnC-List < cnc-list@cnc-list.com> wrote: > Hi Josh, > > I'm late to this thread (haven't been checking list regularly). I have an > AutoProp. 18" 3-bladed, model # AP 3899 RH. > > I would say we're moderately happy with it. It provides good power and we > can motor ~6 kts at 2000-2100 rpm (3HMF); 6.5 kts at 2200. > > I wrote a post on it here a while back: > https://svviolethour.com/2018/03/07/maintaining-an-autoprop-propellor/ > > The main reasons I'm not perfectly happy with it are: > - a diesel mechanic told me AutoProps are harder on the transmission than > MaxProp (we had transmission issues a few years ago, so this is an > ever-present concern) > - the anodes don't last long (they're specific to AutoProp shape and don't > have much metal around the 3 bolt holes, so they tend to break off while > spinning - we've gotten improved results by switching to aluminum and > painting around the bolt holes). > - the prop doesn't always feather well while sailing, causing the shaft to > spin when running downwind. We use a shaft lock now to cut down on the > noise. This may be partly my fault as I'm behind on maintenance - like your > MaxProp, our AutoProp also needs a rebuild (last done 2008, prior owner). > One blade has some rough bearings and isn't free-falling. I'm probably > going to do it myself in March, using as inspiration the Delos video where > Brian did it on theirs. I also had a quote for about $500 from some prop > shop on the east coast. > > -Patrick > C LF38 > > ___ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Sent from Gmail Mobile ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Auto prop
Hi Josh, I'm late to this thread (haven't been checking list regularly). I have an AutoProp. 18" 3-bladed, model # AP 3899 RH. I would say we're moderately happy with it. It provides good power and we can motor ~6 kts at 2000-2100 rpm (3HMF); 6.5 kts at 2200. I wrote a post on it here a while back: https://svviolethour.com/2018/03/07/maintaining-an-autoprop-propellor/ The main reasons I'm not perfectly happy with it are: - a diesel mechanic told me AutoProps are harder on the transmission than MaxProp (we had transmission issues a few years ago, so this is an ever-present concern) - the anodes don't last long (they're specific to AutoProp shape and don't have much metal around the 3 bolt holes, so they tend to break off while spinning - we've gotten improved results by switching to aluminum and painting around the bolt holes). - the prop doesn't always feather well while sailing, causing the shaft to spin when running downwind. We use a shaft lock now to cut down on the noise. This may be partly my fault as I'm behind on maintenance - like your MaxProp, our AutoProp also needs a rebuild (last done 2008, prior owner). One blade has some rough bearings and isn't free-falling. I'm probably going to do it myself in March, using as inspiration the Delos video where Brian did it on theirs. I also had a quote for about $500 from some prop shop on the east coast. -Patrick C LF38 ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Auto prop
Someone here at our club had one on a Morris 47, and I heard it fell off in front of the club in Port Dover 10 years ago. Probably not the autoprops fault, but that is my only experience width them. Bill Coleman Erie PA From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Josh Muckley via CnC-List Sent: Wednesday, December 11, 2019 12:44 PM To: C List Cc: Josh Muckley Subject: Stus-List Auto prop I have been a satisfied customer of max-prop and PYI for the 7 years of my ownership. I am now to a point where the prop needs rebuilt at a relatively high percentage of the replacement price. In the past I have heard only one compelling reason to switch from a max-prop and that is the auto prop. The auto prop and max prop both feather and have similar performance in forward and reverse. The big difference for me is that the spindles on the auto prop are supported by actual ball bearings which ultimately suggests that it will be able to operate longer between OEM rebuilds. It seems that those who have an auto prop are very satisfied. IIRC Dwight has one. Can anybody share their experience with their prop? Of particular interest is the maintenance aspects, parts availability, associated costs of maintenance/parts, model details, and installation considerations. Thanks, Josh Muckley S/V Sea Hawk 1989 C 37+ Solomons, MD ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Stus-List Auto prop
I have been a satisfied customer of max-prop and PYI for the 7 years of my ownership. I am now to a point where the prop needs rebuilt at a relatively high percentage of the replacement price. In the past I have heard only one compelling reason to switch from a max-prop and that is the auto prop. The auto prop and max prop both feather and have similar performance in forward and reverse. The big difference for me is that the spindles on the auto prop are supported by actual ball bearings which ultimately suggests that it will be able to operate longer between OEM rebuilds. It seems that those who have an auto prop are very satisfied. IIRC Dwight has one. Can anybody share their experience with their prop? Of particular interest is the maintenance aspects, parts availability, associated costs of maintenance/parts, model details, and installation considerations. Thanks, Josh Muckley S/V Sea Hawk 1989 C 37+ Solomons, MD ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
