We had similar issues with our 3GM30 with Kanzaki transmission about 5 years
ago. The shaft was not turning fast enough until RPM’s got up to a certain
point then would sort of fully engage but the blades were not symmetrically
deployed causing the vibration. Cause was the transmission cone an
not then I'm not sure what to do except call
the transmission guy again.
Dave J
Saltaire
C&C 35Mk3
Bristol, RI
- Original Message -
From: "Tom Lynch"
To: cnc-list@cnc-list.com
Cc: "ALAN BERGEN" , davidjaco...@comcast.net
Sent: Friday, June 17, 201
Dave,
What you are describing is the same thing that is happening on my 1985 33
MKII with Yanmar 2GM20. I have a folding martek prop and when I leave my
slip the blades open (No vibration ) but anytime I slow the boat down like
when I'm coming back to the marina and I throttle down while still in
Alan,
My gear shift linkage is totally different with the cable coming in from
forward of the lever through a bracket. Its pretty obvious that I need only to
remove the lever rotate it 180 degrees and reattach it to make forward be
forward again.
I'm guessing that if the vibration was due to
>
>
> +1 on double checking the pitch. When I had my Martec refurbished I was told
> by Martec that my original blades were under pitched and I bought new blades
> with higher pitch..
>
> After a year of chasing vibration checking everything with no success I
> finally had my old blades mac
made a significant difference in reducing
vibration.
Good luck
Brian
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Robin Drew
via CnC-List
Sent: Tuesday, June 14, 2016 10:39 PM
To: cnc-list@cnc-list.com
Cc: Robin Drew
Subject: Re: Stus-List Awful vibration
Did
Did you check you engine/ shaft alignment? It's a common cause of vibration.
Robin
> On Jun 14, 2016, at 8:55 PM, Dave via CnC-List wrote:
>
> I purchased my boat, a 1984 35Mk3 three years ago. The first season the boat
> would vibrate badly when I'd slow down under power. I'd put it in reverse
I purchased my boat, a 1984 35Mk3 three years ago. The first season the boat
would vibrate badly when I'd slow down under power. I'd put it in reverse,
throw it into forward (ouch) and things would be fine. The blades always opened
initially when I motored off the mooring but if I slowed down th
