Main pulley. Dennis C.
On Thu, Jul 19, 2018 at 7:10 PM, Wade Glew via CnC-List < cnc-list@cnc-list.com> wrote: > So when you use a laser/optical tach to check the boat's tachometer, where > do you put your reflective mark? On the prop shaft? The main pulley? > > Wade > > On Thu, Jul 19, 2018 at 3:25 PM, Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > >> I know for a fact that mine runs about 200 rpm low. I bought a laser >> tach from the link below. I take that into account. Replacement doesn't >> make it better. Mine has been low since new. It doesn't come off the >> alternator either. It is a stock unit that had a pickup off the flywheel. >> >> AGPtek® Professional Digital Laser Photo Tachometer Non Contact RPM Tach >> https://www.amazon.com/dp/B004Q8L894/ref=cm_sw_r_cp_apa_-kpuBbJVJTJCK >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Solomons, MD >> >> >> >> On Thu, Jul 19, 2018, 3:09 PM Tom Buscaglia via CnC-L >> ist <cnc-list@cnc-list.com> wrote: >> >>> The accuracy of original tachs can be problematic. I’m pretty sure mine >>> reads 4-500 rpm low. Near the top of the “ replace soon” list. >>> >>> Tom Buscaglia >>> S/V Alera >>> 1990 C&C 37+/40 >>> Vashon WA >>> P 206.463.9200 >>> C 305.409.3660 >>> >>> >>> On Jul 19, 2018, at 11:14 AM, cnc-list-requ...@cnc-list.com wrote: >>> >>> Message: 1 >>> Date: Thu, 19 Jul 2018 13:40:06 -0400 >>> From: Josh Muckley <muckl...@gmail.com> >>> To: "C&C List" <cnc-list@cnc-list.com> >>> Subject: Re: Stus-List Yanmar 3HM35F Exhaust riser/goose neck >>> Message-ID: >>> <ca+zacrbufau5rf1btanz7lf+ftbz4t03h-rhh-wxch4msm2...@mail.gmail.com> >>> Content-Type: text/plain; charset="utf-8" >>> >>> The Yanmar manual does have some guidance on page 44. >>> >>> https://drive.google.com/file/d/0B8pEh5lnvP1yenJtR1BxWjhqZGs >>> /view?usp=drivesdk >>> >>> Josh >>> >>> On Thu, Jul 19, 2018, 10:47 AM Wade Glew via CnC-List < >>> cnc-list@cnc-list.com> >>> wrote: >>> >>> Ok. So my engine is a Yanmar 2GM20F. I find the vibration "sweet spot" >>> for >>> >>> motoring is about 2200 rpm. Sounds like I should be pushing it harder >>> >>> trying to find a sweet spot at a higher rpm? I can't recall what the >>> >>> tachometer range is on my boat. I've also had someone mention pushing the >>> >>> engine up to a high rpm before shutting it down for what reason I don't >>> >>> know. Lastly, I notice truckers never shut off their engines immediately >>> >>> after a highway haul. Should I idle my engine before shutting down after >>> a >>> >>> long motor. >>> >>> Thanks for your thoughts. >>> >>> Wade >>> >>> Oh Boy C&C 33 MKII >>> >>> >>> On Thu, Jul 19, 2018, 09:22 Bruce Whitmore via CnC-List, < >>> >>> cnc-list@cnc-list.com> wrote: >>> >>> >>> Hello Wade, >>> >>> >>> Essentially it means running the engine at relatively high RPMs (I've >>> >>> seen the number to by 85% of full speed) whenever reasonable, in gear and >>> >>> avoiding running the engine solely to charge the batteries. >>> >>> >>> Bruce Whitmore >>> >>> 1994 C&C 37/40+ "Astralis" >>> >>> (847) 404-5092 (mobile) >>> >>> bwhitm...@sbcglobal.net >>> >>> >>> >>> ------------------------------ >>> >>> *From:* Wade Glew via CnC-List <cnc-list@cnc-list.com> >>> >>> *To:* cnc-list@cnc-list.com >>> >>> *Cc:* Wade Glew <wadeg...@gmail.com> >>> >>> *Sent:* Thursday, July 19, 2018 10:09 AM >>> >>> *Subject:* Re: Stus-List Yanmar 3HM35F Exhaust riser/goose neck >>> >>> >>> Hi Josh, >>> >>> Being relatively new to the sailboat business can I please ask what you >>> >>> mean by "keeping the engine load as high as possible" with regard to Soot >>> >>> accumulation? >>> >>> Wade >>> >>> Oh Boy C&C 33 MKII >>> >>> >>> On Sat, Jul 14, 2018, 16:24 Josh Muckley via CnC-List, < >>> >>> cnc-list@cnc-list.com> wrote: >>> >>> >>> I was pleasantly surprised, that after 5 years of use and no service, the >>> >>> elbow was in no way clogged with soot. I believe this to be a result of >>> >>> regulatory keeping the engine load as high as possible. >>> >>> >>> Josh >>> >>> >>> On Sat, Jul 14, 2018, 5:11 PM Josh Muckley <muckl...@gmail.com> wrote: >>> >>> >>> It is original to my ownership (6 years), who knows prior to that. >>> >>> Replaced with "stainless" from ebay. >>> >>> >>> Josh >>> >>> >>> >>> _______________________________________________ >>> >>> 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
