Peter, My 1983 LF 35 came with a Yanmar 3HM with a 3 blade fixed prop. It’s happiest around 2200 RPM at roughly 6 knots. Anything more than that it sounds like the hull is shaking apart. Not a lot of sound deadening in general with that diesel, but it gets pretty loud at higher RPMs. Since I replaced the shaft, cutlass bearing, installed a dripless shaft seal when purchased 4 years ago, vibration is likely motor mounts which are probably original.
Someday… Chuck Gilchrest Half Magic 1983 35 Landfall Padanaram, MA From: CnC-List <cnc-list-boun...@cnc-list.com> On Behalf Of Peter Cowenhoven via CnC-List Sent: Monday, August 24, 2020 10:18 AM To: cnc-list@cnc-list.com Cc: Peter Cowenhoven <pscowenho...@yahoo.com> Subject: Re: Stus-List 37+ Cruise Speed I've got a Westerbeke 33 with a 2 blade folding prop. I would say I do 7 knots at about 2700 -2800 rpm pretty consistently. Sent from Yahoo Mail on Android <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature> On Tue, Jun 23, 2020 at 12:53 PM, Rob Hamlin via CnC-List <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > wrote: Hi What is everyone’s motor/ rpm optimal motoring speed? Thanks Rob Sent from my iPhone _______________________________________________ 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
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