Bonjour Bruno Entre Québécois je voulais dire bonjour On Thu, Jul 9, 2020 at 8:41 AM Bruno Lachance via CnC-List < cnc-list@cnc-list.com> wrote:
> Hi Josh, > > When I replaced mine I left the excess length on the forward side to add a > tiny bit more support between the strut and the engine. Probably don't make > a difference, but a friend of mine who owned a CS36 Merlin told me it could > not be bad and maybe help to reduce vibrations. On his boat the shaft is > very long with a fair length without any support. He always add trouble > with vibrations and even broke the shaft in the Bahamas. Many variables > there I agree... > > After 5 years I don't see any premature wear to the bearing. > > From an amateur sailor. I don't think it really matters, rear or forward. > And I don't think the extra length hurts anything either. > > You should see a noticeable improvement regarding vibrations with your > drivetrain refit. > > Bruno Lachance > Bécassine, 33-2 > New-Richmond, Qc > > > Envoyé de mon iPad > > Le 9 juil. 2020 à 07:43, bwhitmore via CnC-List <cnc-list@cnc-list.com> a > écrit : > > Hi Josh, I was just checking our driveshaft numbers yesterday as I will be > coming out of the watwe at the end of the month and I want to replace the > cutlass bearing then. Our shift measures 1 1/4" as well according to the > survey, an old worn out folding prop in my garage and a measurement I took > about 9 months ago. So. I'm thinking your boat may not be such an anomaly > after all. I have no idea what the strut is going to be like. > > All things being equal, I think I would either cut off the excess or align > the forard side flush, just thinking that the blunter forward edge would be > more likely to build positive water pressure, thus pushing water into and > through the bearing. > > That's just a layman's guess though. > > Please keep us updated! > > Bruce Whitmore > 1994 C&C 37/40+ > "Astralis" > > > > Sent from Samsung tablet. > > > -------- Original message -------- > From: Josh Muckley via CnC-List <cnc-list@cnc-list.com> > Date: 7/9/20 12:09 AM (GMT-05:00) > To: C&C List <cnc-list@cnc-list.com> > Cc: Josh Muckley <muckl...@gmail.com> > Subject: Re: Stus-List Cutless/cutlass/strut bearing replacement > > Well it seems that maybe the previous owner has replaced the shaft with a > larger size. A few other 37+ owners have stated that their shafts are > 1-1/8th whereas mine is 1-1/4. The original shaft would have come with a > strut which would accommodate a bearing OD of 1-5/8 inch (1-1/8 x 1-5/8 x > 4-1/2). The smallest bearing OD for my larger 1-1/4 shaft is 1-3/4 (1-1/4 > x 1-3/4 x 5). It appears that the PO must have run into a similar problem > with this combination of original strut and larger shaft and must have had > the bearing turned down to 1-5/8 OD. > > Now for my next question. After the machinist turned the bearing, he > failed to cut it to a length of 4-1/2. The result is a bearing which is > 1/2 inch too long for the strut. I can split the difference and leave 1/4 > inch sticking out on either side of the strut. Or some other fraction > forward and aft. Currently I have about 1/8th forward and 3/8th aft. I'm > not sure if this is good, bad, or indifferent and I'd like to get > everyone's thoughts. Cut it off? Leave it? Move it flush on one side or > the other? > > Thanks, > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Mon, Jun 8, 2020, 16:03 Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > >> OK folks, >> >> I thought I was doing things the right way and incorporating all of the >> years of collective wisdom. Wrong! I'm doing a drive train rebuild and >> with the shaft out it only made sense to replace the strut bearing as >> well. It didn't seem to need it but doing it with the shaft out seemed a >> lot easier than with it in and I know for a fact that the bearing is at >> least 8 years old and probably twice that. I know I have a 1-1/4 shaft and >> the bearing is pretty thin walled so looking online at the availability of >> bearings it seemed that the only real option was a 1-1/4 x 1-1/2 x 5 inch >> bearing. That's 1-1/4 ID and 1-1/2 OD. Basically 1/8 total wall thickness >> (about 1/16th bronze and 1/16th rubber) Well I took it to the boat before >> destroying the old bearing and sure enough it looks like the right size. >> Seems like it will fit just right. I went ahead and destroyed the old >> bearing getting it out. Compared the now destroyed bearing to the new one >> and again no indication of any incorrect size. Today I brought the new >> bearing (fresh from the freezer) to the boat and much to my dismay it >> slipped right into the strut with no resistance and probably 1/16th of play >> all the way around. If I had to guess, I would think that it is instead a >> 1-5/8ths strut not 1-1/2. Ugh! So I looked online and sure enough the >> only next closest size is 1-3/4. That means 1/4 inch wall thickness (1/8th >> inch metal, 1/8th rubber). >> >> This is when I recalled someone else on the list having a similar problem >> a few years ago. I searched the archives and was unable to find the old >> post. I've been to buck algonquin and a few other sites and Google >> searches only to find that the bearings jump from 1-1/2 to 1-3/4 with >> nothing in between. I'm headed back to the boat with a set of calipers but >> unless it turns out to be a 1-3/4 and my eyes are simply due for >> calibration, I'm afraid I'm running out of options. I know that the >> bearings can be turned down but that seems costly and unnecessary. I'd >> like a better idea. >> >> >> All the best, >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&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 >> >> _______________________________________________ > > 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 > > -- Joel Delamirande *www.jdroofing.ca <http://www.jdroofing.ca>*
_______________________________________________ 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
