Mine is way off! PO said Oh I just deal with it. He had a list in Nav. table what to run/read Tach at and what RPM engine was actually doing. I would love to have things match up rather than check the sheet but was told it was not possible?
John S/V Halcyon /) ~ ________________________________ From: CnC-List <cnc-list-boun...@cnc-list.com> on behalf of Josh Muckley via CnC-List <cnc-list@cnc-list.com> Sent: Thursday, July 19, 2018 4:25:19 PM To: cnc-list@cnc-list.com Cc: Josh Muckley Subject: Re: Stus-List Yanmar 3HM35F Exhaust riser/goose neck 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<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB004Q8L894%2Fref%3Dcm_sw_r_cp_apa_-kpuBbJVJTJCK&data=02%7C01%7C%7Ce0dcc2962e234db1139608d5edb5dfda%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636676287749554947&sdata=ZjJDn2DyUpflH%2Bx%2BW4TGvTUPUq%2FyLUlrkzADBTWvhjg%3D&reserved=0> 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<mailto: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<mailto:cnc-list-requ...@cnc-list.com> wrote: Message: 1 Date: Thu, 19 Jul 2018 13:40:06 -0400 From: Josh Muckley <muckl...@gmail.com<mailto:muckl...@gmail.com>> To: "C&C List" <cnc-list@cnc-list.com<mailto: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<mailto: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<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F0B8pEh5lnvP1yenJtR1BxWjhqZGs%2Fview%3Fusp%3Ddrivesdk&data=02%7C01%7C%7Ce0dcc2962e234db1139608d5edb5dfda%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636676287749554947&sdata=609wNTU1vrQccwrWotCxW1R6cgFsYEENlTye4qCjJZc%3D&reserved=0> Josh On Thu, Jul 19, 2018, 10:47 AM Wade Glew via CnC-List <cnc-list@cnc-list.com<mailto: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<mailto: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<mailto:bwhitm...@sbcglobal.net> ------------------------------ *From:* Wade Glew via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> *To:* cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> *Cc:* Wade Glew <wadeg...@gmail.com<mailto: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<mailto: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<mailto: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<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.paypal.me%2Fstumurray&data=02%7C01%7C%7Ce0dcc2962e234db1139608d5edb5dfda%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636676287749554947&sdata=FJScA14X5o4gXCFkY2oOnIdVYJtKSpW3yhHqkCc%2F64Y%3D&reserved=0>
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