Thanks Bill, yes this is true that the rudder is slightly wider now in some spots which may account for the difference, however I still need to do some experiments ie: drifting without the prop turning to see if the drag continues. I honestly don't remember if there was a drag when under motor power prior to the rudder job. I did my best to feather out the new layers of glass so it would blend with the original glass,The old skins I removed were already mis-shapen from a previous repair job and there was huge chunks of epoxy stuck to them that frankly looked like a total nightmare to recover them so I happily chucked them into the dumpster. I also noticed that there was a very obvious cavitation on the port side which looked noticably wrong so when I created the new port side I tried to match the starboard side exactly and eliminated the cavitation. Just eyeballing the rudder when it's off the boat like that; it's very easy to tell that much of it's design was probably not laser perfect from the beginning and even the rudder post was not set straight. I guess I should expect some effects in the boat handling after any modification to the my rudder's previous aerodynamics.
Thanks again :) Dan On Mon, Sep 30, 2019 at 5:16 PM Bill Coleman via CnC-List < [email protected]> wrote: > > > Dan, Sorry this is a couple weeks late, I seem to have been > ex-communicated from here for awhile – > > This is what I said at the time, but it never made it through. Just my > opinion, of course, so worth exactly what you paid for it. > > > > <I would go with C, Rudder slightly misshapen. > > Couple things I noticed about the re-build, (from your video) when you > removed the port side skin, you cut and discarded the half shell, and fiber > glassed over the top of the front and back portion of the remaining skin. > I would have thought you would feather the fiberglass down to a 10:1 > angle where you cut it, and then just remove and re-use that original > portion of the skin so it would have the identical profile. I am thinking > your rudder is about a quarter inch proud on the port side, causing more > lift over there. > > The only reason I think this is that you mentioned you didn’t seem to > believe that it pulled left before. > > Bill Coleman > > Erie PA> > > > > *From:* CnC-List [mailto:[email protected]] *On Behalf Of *Dan > via CnC-List > *Sent:* Monday, September 16, 2019 11:20 AM > *To:* CNC boat owners, cnc-list > *Cc:* Dan > *Subject:* Stus-List New Rudder Steering Tugging > > > > Hi all, > > So I recently rebuilt my rudder and re-installed it on Breakaweigh. > > We took the boat out yesterday and I noticed when under diesel power that > the wheel is lightly tugging to the port side. I'm not entirely sure if it > did that before or if this is a new tugging. If I were to completely let go > of the wheel the boat would automatically start a broad turn to port just > like your car is supposed to always veer to one side to get you off the > road (so I've heard) > > > > My question is - is this due to the movement/rotation of water from the > prop at 2000 rpm moving water accross the rudder (is this a typical > rudder/prop thing?) OR do I need to adjust the tension in my rudder cables, > OR is my rudder very slightly miss-shapen causing a minor lift" to one side? > > > > When I re-attached the rudder I referenced photos I took of my rudder > cables where they are attached to the quadrant before hand so I could > closely match the threading on each side so that the tensions would be the > same as before. (theoretically) > > > > Thanks everyone, > > > > Dan > > Breakaweigh > > C&C44 > > Halifax, NS > > > > _______________________________________________ > > 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
