Re: Stus-List RPMs on Your Diesel Engine
Josh, you said: “The throttle lever slips a little so after extended operation the rpms creep down and I'll have to re-throttle up. “ You know that there is a little (actually not so little, it is 1/2” or 13 mm hex head in my case) bolt that you can adjust to stop the throttle lever from slipping. You have to remove the compass in order to reach it. Of course, I assume that your controls are on the pedestal. Marek ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
My throttle cable has a little U shaped metal device with a 13mm (1/2) bolt but it is located mid-way on the cable - very easy to get at. A little twist stopped my throttle slippage. Gary - Original Message - From: Marek Dziedzic via CnC-List To: cnc-list@cnc-list.com Sent: Wednesday, May 28, 2014 8:26 AM Subject: Re: Stus-List RPMs on Your Diesel Engine Josh, you said: “The throttle lever slips a little so after extended operation the rpms creep down and I'll have to re-throttle up. “ You know that there is a little (actually not so little, it is 1/2” or 13 mm hex head in my case) bolt that you can adjust to stop the throttle lever from slipping. You have to remove the compass in order to reach it. Of course, I assume that your controls are on the pedestal. Marek -- ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Buy a Tiny-tach. http://www.tinytach.com/tinytach.php Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, May 27, 2014 at 7:52 PM, Tom Buscaglia via CnC-List cnc-list@cnc-list.com wrote: Josh Aha...I have been wondering about the apparent inability of my 3HM35F to run at much of anything above 3000 RPM, even in neutral. The variance from the 20 year old analog tach would account for that. I have been running at about 24-2600 RPM on the tach, which, if that variance from actual on mine as it was on yours, it makes perfect sense. thx...I feel much better now... Tom B Tom Buscaglia SV Alera CC 37+/40 Vashon Island WA (206) 463-9200 www.sv-alera.com At 03:49 PM 5/27/2014, you wrote: Message: 7 Date: Tue, 27 May 2014 18:44:55 -0400 From: Josh Muckley via CnC-List cnc-list@cnc-list.com To: CC List cnc-list@cnc-list.com Subject: Re: Stus-List RPMs on Your Diesel Engine Message-ID: ca+zacrd3fh6n4s8+tew-3-1w_jga4ver9onjob1xctjjlce...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Yanmar 3HM35F 30hp @3200 rpm continuous. 3400rpm for 1hour. 3600rpm max. My manual says to avoid extended operation at high vibation rpm. The Idle/shift/minimum rpm spec is 800. The Kanzaki transmission is required to be shifted less than 1000rpm. I push it as hard and fast as I can while watching and smelling for black smoke. The rpm by analog tach is usually 2500-2800 but by laser-tach it usually adds about 200-400rpm. Boat speed is between 6.0-7.5kts. The throttle lever slips a little so after extended operation the rpms creep down and I'll have to re-throttle up. I don't worry about fuel consumption since I don't use my 40 gallon tank fast enough anyway. I hate running the engine but the noise is basically the same regardless of rpm. I also use a great product called Opti-lube XPD. I strongly recommend it. It is marketed to restore the lubricity that has been lost by ultra low sulfer diesel (ULSD). My expierience is that the engine runs smoother, min idles a little higher and smoother, and can attain a higher rpm before black smoke. My understanding with ALL diesels is that you want to run the engine near full rpm and load as often as possible and the prop should be pitched accordingly. Josh Muckley S/V Sea Hawk 1989 CC 37+ Yanmar 3HM35F Solomons, MD On May 27, 2014 12:16 PM, Edd Schillay via CnC-List cnc-list@cnc-list.com wrote: Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. ...snip... To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- next part -- An HTML attachment was scrubbed... URL: http://cnc-list.com/pipermail/cnc-list_cnc-list.com/attachments/20140527/7ea8bfc4/attachment-0001.html -- ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
A good rule of thumb is to max out the RPMs when you're under way. Note the number. About 75% of that is a good cruising RPM but many people will go a little lower. IE if you max out at 3200 RPM, then 2400 would be fine, but I would probably run at 2200 to conserve fuel. Running at max for brief periods won't harm the engine. (and might do it a little bit of good) It is good to max out your RPMs on a fairly regular basis. A reduction in max RPMs will be a signal that you have a problem somewhere (it could be as simple as a fouled prop). Andy CC 40 Peregrine On Tue, May 27, 2014 at 12:16 PM, Edd Schillay via CnC-List cnc-list@cnc-list.com wrote: Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don’t be afraid to go 2500 or more, but I wonder if he’s just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log http://enterpriseb.blogspot.com/ ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- Andrew Burton 61 W Narragansett Ave Newport, RI USA 02840 http://sites.google.com/site/andrewburtonyachtservices/ phone +401 965 5260 ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Maybe no problem for the diesel with higher rpm but everything connected to it also sees the higher rpm.I like to find the rpm sweet spot where everything seems to be running smoth with low vibration, go a hundred rpm higher or lower and things will vibrate more on Alianna.actually there seems to be 2 sweet spots, one around 1500 for slow leaisurely steaming in calm condidtions and another around 2500 for rougher conditions.however I can make the boat move faster with higher rpm but vibrations increase and I don't like the added noise.I have a 3 blade Autoprop and I figure that my prop has preferred rotation speeds or sweet spots where balance is best and vibrations are minimized and all sounds right but that's just a guess _ From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Edd Schillay via CnC-List Sent: May 27, 2014 1:16 PM To: cnc-list@cnc-list.com Subject: Stus-List RPMs on Your Diesel Engine Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don't be afraid to go 2500 or more, but I wonder if he's just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log http://enterpriseb.blogspot.com/ ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
I understand about sweet spots, but I'd say if you are getting that much vibration, something's out of whack. Andy CC 40 Peregrine Andrew Burton 61 W Narragansett Newport, RI USA02840 http://sites.google.com/site/andrewburtonyachtservices/ +401 965-5260 On May 27, 2014, at 12:26, dwight via CnC-List cnc-list@cnc-list.com wrote: Maybe no problem for the diesel with higher rpm but everything connected to it also sees the higher rpm…I like to find the rpm sweet spot where everything seems to be running smoth with low vibration, go a hundred rpm higher or lower and things will vibrate more on Alianna…actually there seems to be 2 sweet spots, one around 1500 for slow leaisurely steaming in calm condidtions and another around 2500 for rougher conditions…however I can make the boat move faster with higher rpm but vibrations increase and I don’t like the added noise…I have a 3 blade Autoprop and I figure that my prop has preferred rotation speeds or sweet spots where balance is best and vibrations are minimized and all sounds right but that’s just a guess From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Edd Schillay via CnC-List Sent: May 27, 2014 1:16 PM To: cnc-list@cnc-list.com Subject: Stus-List RPMs on Your Diesel Engine Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don’t be afraid to go 2500 or more, but I wonder if he’s just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Not always. Harmonics on a 30 year boat need the sweet spot. On Tue, May 27, 2014 at 12:35 PM, Andrew Burton via CnC-List cnc-list@cnc-list.com wrote: I understand about sweet spots, but I'd say if you are getting that much vibration, something's out of whack. Andy CC 40 Peregrine Andrew Burton 61 W Narragansett Newport, RI USA02840 http://sites.google.com/site/andrewburtonyachtservices/ +401 965-5260 On May 27, 2014, at 12:26, dwight via CnC-List cnc-list@cnc-list.com wrote: Maybe no problem for the diesel with higher rpm but everything connected to it also sees the higher rpm...I like to find the rpm sweet spot where everything seems to be running smoth with low vibration, go a hundred rpm higher or lower and things will vibrate more on Alianna...actually there seems to be 2 sweet spots, one around 1500 for slow leaisurely steaming in calm condidtions and another around 2500 for rougher conditions...however I can make the boat move faster with higher rpm but vibrations increase and I don't like the added noise...I have a 3 blade Autoprop and I figure that my prop has preferred rotation speeds or sweet spots where balance is best and vibrations are minimized and all sounds right but that's just a guess -- *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com cnc-list-boun...@cnc-list.com] *On Behalf Of *Edd Schillay via CnC-List *Sent:* May 27, 2014 1:16 PM *To:* cnc-list@cnc-list.com *Subject:* Stus-List RPMs on Your Diesel Engine Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don't be afraid to go 2500 or more, but I wonder if he's just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log http://enterpriseb.blogspot.com/ ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake up in the day to find it was vanity, but the dreamers of the day are dangerous men,for they may act their dreams with open eyes, to make it possible. T. E. Lawrence . ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
I have an M35B in Imzadi. Max RPM is 3000 for that engine. IIRC the max torque is between 2400 and 2600 RPM - which is consistent with the rule of thumb that max torque is at about 80% of max RPM. Your engine will thank you if you use it regularly and with significant load. Idling for extended periods to charge batteries, it running for long periods at low RPMs is not good for it. But 2300 is pretty close to 2400-2500, so you are probably not doing significant harm. Just don't be afraid of going to 2500. Rick Brass Sent from my iPad On May 27, 2014, at 12:16, Edd Schillay via CnC-List cnc-list@cnc-list.com wrote: Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don’t be afraid to go 2500 or more, but I wonder if he’s just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Hi Edd, I hear 2750 is the sweet spot for an engine w 3600 max RPM I just ran three days to get my boat from AC to Magothy River, Md. My M4-30 liked 2750 for the first day running at max, 195 degrees. Diesels like to run hot and run loaded. They start carboning up if they are loaded less than 30%. The second day, I had an overheat condition and had to stop and anchor and clean the heat exchanger. It was scaled up with many tubes plugged. I rodded it clear using wooden dowels I keep aboard. The flow improved but only 50%. I changed the impellor and flow was 30% better than when I launched. The old impellor looked fine, but the results were night and day, so I threw it away. After that, she ran cooler and liked more RPMs and we got closer to 3000PRM. 3600 is max. I monitor vibration and engine temperature to choose RPMs. We were pushing to catch tide changes to get up the Delaware and thru the CC Canal. Chuck Resolute 1990 CC 34R Atlantic City, NJ - Original Message - From: CNC boat owners, cnc-list cnc-list@cnc-list.com To: CNC boat owners, cnc-list cnc-list@cnc-list.com Sent: Tuesday, May 27, 2014 12:16:00 PM Subject: Stus-List RPMs on Your Diesel Engine Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don’t be afraid to go 2500 or more, but I wonder if he’s just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
I am told my Beta 25 can run up to 3600 but I reach hull speed at ~ 3200 so running it higher is pointless--the speed is fixed by the combination of rpm/transmission ratio/prop size/LWL. It is loud enough at 3200! Charlie Nelson S/V Water Phantom cenel...@aol.com -Original Message- From: Chuck S via CnC-List cnc-list@cnc-list.com To: Edd Schillay e...@schillay.com; CNC boat owners, cnc-list cnc-list@cnc-list.com Sent: Tue, May 27, 2014 5:22 pm Subject: Re: Stus-List RPMs on Your Diesel Engine Hi Edd, I hear 2750 is the sweet spot for an engine w 3600 max RPM I just ran three days to get my boat from AC to Magothy River, Md. My M4-30 liked 2750 for the first day running at max, 195 degrees. Diesels like to run hot and run loaded. They start carboning up if they are loaded less than 30%. The second day, I had an overheat condition and had to stop and anchor and clean the heat exchanger. It was scaled up with many tubes plugged. I rodded it clear using wooden dowels I keep aboard. The flow improved but only 50%. I changed the impellor and flow was 30% better than when I launched. The old impellor looked fine, but the results were night and day, so I threw it away. After that, she ran cooler and liked more RPMs and we got closer to 3000PRM. 3600 is max. I monitor vibration and engine temperature to choose RPMs. We were pushing to catch tide changes to get up the Delaware and thru the CC Canal. Chuck Resolute 1990 CC 34R Atlantic City, NJ From: CNC boat owners, cnc-list cnc-list@cnc-list.com To: CNC boat owners, cnc-list cnc-list@cnc-list.com Sent: Tuesday, May 27, 2014 12:16:00 PM Subject: Stus-List RPMs on Your Diesel Engine Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don’t be afraid to go 2500 or more, but I wonder if he’s just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Edd, This will vary from manufacturer to manufacturer, as well as the specific model. My Yanmar tops out at 3600 rpm. Yanmar recommends running them at up to 85% of their continuous rating. My max continuous is 3400, so I run mine about 2900. That's how I get to Screwpile every year. 13 hours at 2900 rpm, each way. There's never any wind on the Chesapeake in July. Jake Jake Brodersen Midnight Mistress CC 35 Mk-III Hampton Va From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Edd Schillay via CnC-List Sent: Tuesday, May 27, 2014 12:16 PM To: cnc-list@cnc-list.com Subject: Stus-List RPMs on Your Diesel Engine Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don't be afraid to go 2500 or more, but I wonder if he's just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log http://enterpriseb.blogspot.com/ ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Those extra rpm's make a difference when being hit head-on by waves, or even chop. The added ability to accelerate faster back up to hull speed will make your average speed over time faster, even though you won't be exceeding hull speed. How fast you recover after a wave slows you down can make quite a difference in how soon you get where you are going. That is why it never hurts to have a few more horsepower. Reaching hull speed in calm flat water is not the goal. Most boats that are considered a bit underpowered have no trouble reaching hull speed when there is no opposition. Of course, going slower than hull speed in those conditions will generally be more comfortable if that is your priority. Bill Bina On 5/27/2014 5:26 PM, via CnC-List wrote: I am told my Beta 25 can run up to 3600 but I reach hull speed at ~ 3200 so running it higher is pointless--the speed is fixed by the combination of rpm/transmission ratio/prop size/LWL. It is loud enough at 3200! Charlie Nelson S/V Water Phantom cenel...@aol.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Yanmar 3HM35F 30hp @3200 rpm continuous. 3400rpm for 1hour. 3600rpm max. My manual says to avoid extended operation at high vibation rpm. The Idle/shift/minimum rpm spec is 800. The Kanzaki transmission is required to be shifted less than 1000rpm. I push it as hard and fast as I can while watching and smelling for black smoke. The rpm by analog tach is usually 2500-2800 but by laser-tach it usually adds about 200-400rpm. Boat speed is between 6.0-7.5kts. The throttle lever slips a little so after extended operation the rpms creep down and I'll have to re-throttle up. I don't worry about fuel consumption since I don't use my 40 gallon tank fast enough anyway. I hate running the engine but the noise is basically the same regardless of rpm. I also use a great product called Opti-lube XPD. I strongly recommend it. It is marketed to restore the lubricity that has been lost by ultra low sulfer diesel (ULSD). My expierience is that the engine runs smoother, min idles a little higher and smoother, and can attain a higher rpm before black smoke. My understanding with ALL diesels is that you want to run the engine near full rpm and load as often as possible and the prop should be pitched accordingly. Josh Muckley S/V Sea Hawk 1989 CC 37+ Yanmar 3HM35F Solomons, MD On May 27, 2014 12:16 PM, Edd Schillay via CnC-List cnc-list@cnc-list.com wrote: Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don't be afraid to go 2500 or more, but I wonder if he's just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log http://enterpriseb.blogspot.com/ ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List RPMs on Your Diesel Engine
Edd, My Universal 25XPB has a max rpm (one hour) of 2900-3000 rpm. The manual states cruise is 80% of that. I run 2450 rpm as cruise. The engine seems to like it. Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, May 27, 2014 at 11:16 AM, Edd Schillay via CnC-List cnc-list@cnc-list.com wrote: Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. I used to stay around 2300, but people tell me diesels like to be worked and I could go higher. My mechanic said don’t be afraid to go 2500 or more, but I wonder if he’s just looking for more repair income :-) How much do you push your engine? All the best, Edd Edd M. Schillay Starship Enterprise CC 37+ | Sail No: NCC-1701-B City Island, NY Starship Enterprise's Captain's Log http://enterpriseb.blogspot.com/ ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Stus-List RPMs on Your Diesel Engine
Josh Aha...I have been wondering about the apparent inability of my 3HM35F to run at much of anything above 3000 RPM, even in neutral. The variance from the 20 year old analog tach would account for that. I have been running at about 24-2600 RPM on the tach, which, if that variance from actual on mine as it was on yours, it makes perfect sense. thx...I feel much better now... Tom B Tom Buscaglia SV Alera CC 37+/40 Vashon Island WA (206) 463-9200 www.sv-alera.com At 03:49 PM 5/27/2014, you wrote: Message: 7 Date: Tue, 27 May 2014 18:44:55 -0400 From: Josh Muckley via CnC-List cnc-list@cnc-list.com To: CC List cnc-list@cnc-list.com Subject: Re: Stus-List RPMs on Your Diesel Engine Message-ID: ca+zacrd3fh6n4s8+tew-3-1w_jga4ver9onjob1xctjjlce...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Yanmar 3HM35F 30hp @3200 rpm continuous. 3400rpm for 1hour. 3600rpm max. My manual says to avoid extended operation at high vibation rpm. The Idle/shift/minimum rpm spec is 800. The Kanzaki transmission is required to be shifted less than 1000rpm. I push it as hard and fast as I can while watching and smelling for black smoke. The rpm by analog tach is usually 2500-2800 but by laser-tach it usually adds about 200-400rpm. Boat speed is between 6.0-7.5kts. The throttle lever slips a little so after extended operation the rpms creep down and I'll have to re-throttle up. I don't worry about fuel consumption since I don't use my 40 gallon tank fast enough anyway. I hate running the engine but the noise is basically the same regardless of rpm. I also use a great product called Opti-lube XPD. I strongly recommend it. It is marketed to restore the lubricity that has been lost by ultra low sulfer diesel (ULSD). My expierience is that the engine runs smoother, min idles a little higher and smoother, and can attain a higher rpm before black smoke. My understanding with ALL diesels is that you want to run the engine near full rpm and load as often as possible and the prop should be pitched accordingly. Josh Muckley S/V Sea Hawk 1989 CC 37+ Yanmar 3HM35F Solomons, MD On May 27, 2014 12:16 PM, Edd Schillay via CnC-List cnc-list@cnc-list.com wrote: Listers, Curious to know what you set as your own personal Max RPMs on your diesel engine? The Enterprise has an Universal M35. ...snip... To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- next part -- An HTML attachment was scrubbed... URL: http://cnc-list.com/pipermail/cnc-list_cnc-list.com/attachments/20140527/7ea8bfc4/attachment-0001.html -- ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
