I suggest wax paper vs cellophane On Sat, Dec 8, 2018 at 8:07 AM Tim Rutherford via CnC-List < [email protected]> wrote:
> Update. > > Shaft was riding hard against the the inside of the packless seal's carbon > stator and hard against the forward end of the cutless bearing.This all > makes sense, since the shaft has always been hard to turn by hand and is > reflected in the shaft wear patterns. > > Local prop shop condemned the propeller shaft and coupling, supplied new > replacements, and installed a new cutless bearing in the strut. > > Martec two-blade folding prop is completely serviced and is on it's way > back. > > Reassembly: When I test fitted the strut and shaft, the shaft exits the > log too high and to starboard proving the misalignment. Further examination > of the packless seal stator confirms that the shaft was riding in that > area. I ordered a new one (whole packless seal, not just a kit) too. The > face was also scored and it was worn off-center. > > Looks like I'll be re-bedding the strut with better alignment. The plan is > to assemble the shaft and the strut and raise it into position, then shim > the shaft temporarily into the center of the log, to offset the shaft > weight. Then raise the strut to it's existing bed to see which corner makes > contact first and use that one (1) screw for general location for the next > step. Then Ill prepare the bed with thickened epoxy and prepare the strut > with a release agent (or cellophane?). I'll raise the strut until the base > makes contact in the area where that one (1) screw is located and support > it there with only slightly more pressure than it's own weight. I'll fill > the three (3) remaining screw holes with epoxy and let it all set up. > After the epoxy has cured, I'll re-drill the remaining screw holes then > re-bed the whole shebang with sealant. > > Concurrently the rudder is almost out to refurbish bearings. Mine has the > bronze thrust plate just under the helmsman's seat in the cockpit but > that's a different thread! > > Any shared experience is always welcomed! > > -- > Tim Rutherford > <[email protected]> > C&C 36-1 KCB #244 - Chamamé > Tampa, FL > [email protected] > > > On Thu, Nov 29, 2018 at 6:13 PM Tim Rutherford < > [email protected]> wrote: > >> Neil, Matt, Dennis, and Len - thanks for your comments. Really >> appreciated! >> >> -- >> Tim Rutherford >> <[email protected]> >> C&C 36-1 KCB #244 - Chamamé >> Tampa, FL >> [email protected] >> >> >> >> On Wed, Nov 28, 2018 at 7:53 PM Dennis C. via CnC-List < >> [email protected]> wrote: >> >>> Couple years ago, I removed Touche's strut to straighten it. It was a >>> straightforward job. I did have to remove the fuel tank for access to the >>> nuts. >>> >>> Upon re-install, I used a cone shaped grinding stone to chamfer the 4 >>> fastener holes on the underside. This lets the sealant form an o-ring >>> around the fastener. I think I used 3M 4200 as the sealant. I recall I >>> used new fasteners with fender washer, washer and nylon lock nuts. >>> >>> The joint around the perimeter of the strut base was faired with >>> AwlFair, sanded and painted. >>> >>> The alignment was pretty true before removal so I just re-installed >>> without any further ado. The lack of vibration after completion indicates >>> that the job was successful. If there had been any vibration, I would have >>> done an alignment. >>> >>> Dennis C. >>> Touche' 35-1#83 >>> Mandevile, LA >>> >>> On Nov 28, 2018 9:16 AM, "Tim Rutherford via CnC-List" < >>> [email protected]> wrote: >>> >>> Prop shaft strut is weeping around the nuts inside the hull and >>> externally the fairing shows cracks around the perimeter of the strut base >>> although it doesn't feel loose. No slop in the Cutlass bearing. She's on >>> the hard for bottom job and driveline maintenance. I'm interested in your >>> thoughts on how best to proceed to remedy the strut mount leak and cracks >>> in the fairing. >>> >>> From the few posts I have found here, it seems the struts are aligned >>> and bedded onto a hard substrate and that the mounting holes were drilled >>> with a close fit. That said, it seems that to remount the strut all that is >>> required is to remove the fairing material and then simply remove and >>> replace, seal, and re-fair. >>> >>> My questions are: >>> 1.) How best to assess whether comprehensive strut alignment check is >>> necessary i.e., laser, scope, yadda-yadda? I'm thinking that if the shaft >>> slides easily through the remounted strut and into center of the shaft log >>> and seal, and visually appears dead on center through all the above, than I >>> can proceed with the engine alignment. If not what, call a pro? I have more >>> time than money, so DIY work is preferred. >>> >>> 2.) How significant is hull flex on these boats while on the hard? I >>> plan final engine alignment after launch, but could loading on the yard >>> stands cause strut alignment to appear skewed? BTW, I'm working with an >>> independent Yanmar mechanic for the engine mounts and alignment. >>> >>> 2.) What material for fairing and sealing the strut bed? What's the >>> method of application? >>> >>> The prop is a folding Martec two-blade RH17DX10P-3 Eliptec with 4" of >>> clearance to the hull; found the center pin broken on one end. It's back at >>> Martec for refurb. The motor mounts were DF2205-2 going back with OE Yanmar >>> mounts. While under way, the vibration caused the sail locker lid to sound >>> like rubber marbles in a blender at a frequency that was probably 2X prop >>> speed. It seemed like a lot of vibration but there was no change since I >>> purchased the boat in June '17, and after about a hundred hours of >>> motoring. Shaft seal is a PYI PSS that is getting a new maintenance kit, >>> and of course, the strut a new cutlass bearing. >>> >>> Please share your thoughts if you have been through this or something >>> similar. All help is appreciated. >>> -- >>> Tim Rutherford >>> C&C 36-1 KCB #244 - Chamamé >>> Tampa, FL >>> [email protected] >>> 813 748 4888 cel/text >>> _______________________________________________ >>> >>> 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 >>> >>> _______________________________________________ > > 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
