Catalina 34

General Activities => Main Message Board => Topic started by: David Arnold on April 26, 2008, 06:20:31 PM

Title: Shaft movement.
Post by: David Arnold on April 26, 2008, 06:20:31 PM
I am in the process of getting the boat ready for launch and today I cleaned the prop and shaft but noticed a little bit of play or side to side movement within the strut.  The movement if measured would probably amount to a hundreth of an inch which I figure is normal but wanted to check with the experts.  I would think that if there was no play at all the shaft would not be able to turn; am a I correct?
Title: Re: Shaft movement.
Post by: foursailing on April 26, 2008, 07:50:24 PM
David - a little play in the shaft is normal - hundreth of an inch is very small and would be more than acceptable.


Bill
Title: Re: Shaft movement.
Post by: Ken Juul on April 27, 2008, 04:04:11 PM
The last time  I checked mine I had what can be described as movement.  I asked around, couple owners voluntered that they had just had theirs checked by experts and were ok.  I gave them a shake and would estimate they both had at least an 1/8-1/4" inch play.  I'll change mine if it even gets close to that.  At an estimated 100th you have quite a while before you need to change it.
Title: Re: Shaft movement.
Post by: Ron Hill on April 27, 2008, 05:04:46 PM
David : On a new cutless bearing you should have no play. It will stay that way for a years depending on your engine/shaft alignment and engine hours run each year. 
The biggest wear factor on your cutless bearing is that alignment.  That's why people go to a "flexable coupling" and reduce that wear.  A thought    :D 
Title: Re: Shaft movement.
Post by: Steve Sayian on April 27, 2008, 05:12:22 PM
I have also heard that locking the shaft in reverse while sailing will reduce wear on the cutlass.  I have a feathering prop so that's no problem, but I wonder about people whio have fixed blade props?
Title: Re: Shaft movement.
Post by: Ron Hill on April 27, 2008, 05:25:18 PM
Steve : I've never heard that. 
I would say that sailing with the transmission in neutral (like most racers with a fixed prop do) would tend to wear the cutless bearing, not having it locked in reverse !!  My openion.
Title: Re: Shaft movement.
Post by: tonywright on April 28, 2008, 06:59:04 AM
Ron, I think that you and Steve are in violent agreement!  Locking in reverse is the manufacturer's recommendation.

Tony
Title: Re: Shaft movement.
Post by: Stu Jackson on April 28, 2008, 11:21:32 AM
See: http://www.c34.org/faq-pages/faq-transmission-position-sailing.html
Title: Re: Shaft movement.
Post by: Steve S. on April 28, 2008, 05:52:45 PM
Even with a folding prop, I believe its best to lock the transmission in reverse.  It helps ensure the prop folds. I have found in light winds that a folding prop sometimes won't fold and the shaft will still turn.   
Title: Re: Shaft movement.
Post by: Ron Hill on April 28, 2008, 06:22:38 PM
Tony : You are correct, Steve and I are saying the same thing.   :thumb: