Thanks Don, this is great info, and I will certainly question the owner on this if we get to that point. They've had it for 3 years and have cruised Desolation Sound (where they must have motored quite a lot), so if there is an issue with vibration, he would have noticed. If it comes to a sea trial, I will try to get someone more experienced than I to come along for the ride.
On Fri, Apr 12, 2019 at 11:17 AM Don Kern via CnC-List < cnc-list@cnc-list.com> wrote: > Shawn, > > Just went outside to look at Fireball's prop /shaft. She is close to the > original arrangement that came from the factory with the Atomic (now > rebuilt 2x). She has newer replacement Martec 2 bladed folding prop that > is 1 5/8" aft of the strut with a radius that meets the recommended hull > clearance to keep vibration to a minimum. I agree with Gary that that much > unsupported shaft is a good way to get vibration. The shaft on Fireball > was replaced because the prop tip was 1/8" out of alignment due to a line > getting wrapped around the shaft/prop causing vibration. Was amazed that > so little shaft aft the strut could be bent. > Don Kern > Fireball 12708 > Bristol RI > > > > On 4/12/2019 12:03 AM, Shawn Wright via CnC-List wrote: > > I just noticed what appears to be a fairly long extension of the prop > shaft beyond the support on the 35-2 pictured here: > > > http://www.cruisersforum.com/forums/attachment.php?attachmentid=168876&d=1524980874 > > It looks like there is at least 12" of shaft beyond the support before the > prop, and bit less between the hull and the support. I recall reading a > survey on a boat I was considering where the surveyor commented on > excessive prop shaft extension as a possible cause of vibration. As this > boat has a VW diesel (not sure of the transmission), I am wondered if the > shaft might be too long. > > How does this compare with other 35s? > > -- > Shawn Wright > shawngwri...@gmail.com > > _______________________________________________ > > 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 > > _______________________________________________ > > 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 > > -- Shawn Wright shawngwri...@gmail.com
_______________________________________________ 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
