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09-04-2011, 06:01 PM | #1 |
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The Engines
The M/V Mount Washington recieved a pair of new engines last year under some kind of Stimulus program I think..$1M. What ever happened to the original Enterprise engines. Was there a requirement that the original Enterprise engines be rendered "useless" ....like the Cash for Clunkers program for cars...???? Just wondering.. NB
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09-04-2011, 06:50 PM | #2 |
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The Boat Museum in Wolfeboro has one of the 8 cylinders (we went there yesterday) and the display placard indicates the rest were scrapped.
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09-04-2011, 07:27 PM | #3 |
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NB...what kind of boat project you got in mind for that motor?
ps: I MISS the "thrum" of the old motors. The Mount is "silent" now .I always won at the Iseethemtfirst cause I could hear it. |
09-04-2011, 07:46 PM | #4 |
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It was about $750,000 for two new Caterpillar marine diesel engines, painted bright Caterpillar yellow, that use much less fuel, have much lower pollutants in exhaust, and weigh much less than the old 1940's engines.
Cannot blame the Mount for wanting to go for a freebie engine exchange and upgrade courtesy of the U. S. tax-payers.....was just too good to resist a courtesy $750,000 upgrade based on conservative Yankee principals..... whatever that means! If Obama offered me a $750,000 freebie upgrade, I too would salute smartly and say thankyou very much, Mr President! One big downside to the new engines is they sound very different; gone forever is the old, slow chuga-chuga-chuga sound, which has been replaced by an efficient but very boring sounding, fast putt-putt-putt. You know, if Mitt would just make a campaign promise to restore that old, slow chuga-chuga-chuga sound to the Mount, then I'll vote for Mitt! Shame on Obama for messing with that iconic chuga-chuga-chuga, traditional Lake Winnipesaukee-M.V. Mount Washington-New Hampshire-Granite State sound......duh!
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09-06-2011, 11:40 AM | #5 |
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09-06-2011, 11:53 AM | #6 |
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Wow Don! what a great souvenir!!
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09-06-2011, 12:14 PM | #7 | |
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I would like to have seen one of the Mounts engines go to Mystic Seaport since they were certainly historically significant. You could then still take your grandchildren to the museum and hear that old Thumping that you heard "back in the day". Lament: A total waste of a valuable historic artifact. (No smiles here for their apparent demise.) NB |
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09-06-2011, 12:20 PM | #8 |
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I do believe as part of the stimulus monies, that the Enterprise Engines, had to be rendered useless....
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09-06-2011, 12:21 PM | #9 | |
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09-06-2011, 12:23 PM | #10 |
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Such a waste
It's a shame the old engines were scrapped. I've read numerous stories over the years about how the Mt. had to scrounge and scrape to find and buy old engines for parts to keep the Mt. running. It would seem that the Mt's owners should have found a way to preserve those engines and parts so that others who were not as fortunate to get a big Govt. handout could use the parts to keep their machinery running.
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09-06-2011, 12:53 PM | #11 |
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Enterprise Diesel
Maybe.. Mystic Seaport already has one and didn't need another one....? Notice how LOW the RPMs are for the various engines. This explains the thump thump thump sound you "used to" hear coming around the point. NB
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09-06-2011, 02:37 PM | #12 |
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New engine & new tranny
Something everyone is forgetting is that the transmission was replaced as well. With the old transmission the engines had to be shut down to set the tranny in reverse and then start up again which took about 30 seconds if I remember correctly. With the new tranny its shift on the fly.
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09-06-2011, 10:10 PM | #13 |
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The old engine blocks and crank pans were indeed scrapped as a condition of the grant. The other parts are on the market.
The old engines did not have transmissions at all. They were "direct drive" - shaft and propellor connected directly to the crankshaft. The engines were shut down, then restarted in the opposite rotation to achieve reverse. The new engines do have transmissions, so do not need to be shut down to shift just like any other marine transmission. The commemorative part in Don's picture is a wrist pin cover from a piston. The Mystic Seaport exhibit is great. Also, for anyone into steam, try the New England Wireless and Steam Museum in East Greenwich, RI on Saturday, October 1. That's the date of their annual "Yankee Steam-Up" engine show. Google it for the details. Also, remember the Lee's Mills steamboat rally, Sept 9 - 18. Last edited by skprbob; 09-07-2011 at 08:33 AM. Reason: added an item |
09-07-2011, 08:33 AM | #14 |
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Gear reducer to prop
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09-07-2011, 04:10 PM | #15 |
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gear reducer?
No. As I said, direct drive.
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09-07-2011, 06:13 PM | #16 |
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I think most people aren't aware that some diesels can be stopped ...Then restarted ..rotating in the opposite direction. (Running Backwards)
Explanation: Try this: Say the engine normally turns clockwise when driving the boat through the water. When reverse propeller thrust is required...the engine is STOPPED....then the engine is RE-Started ...rotating in the opposite direction. This can't be done with a GAS engine. The "Pilot" (Captain) of the vessel in question, needs to have his timing correct when docking....and be Confident the engine will restart in the rotation he requires....at the instant he requires it to happen. As stated above..the OLD engines had no transmissions. LARGE Marine diesels generally run at ONE set RPM...ALL the time. The RPM is VERY low compared to any Gas engine. The Large Enterprise Diesels ran at 360 RPM..ALL the time and made Large Horsepower. Unlike a BIG diesel..A gas engine will normally NOT run at less than 600 RPM. It will stall. At 600 RPM a gas engine is idling, and will be making essentially NO Horsepower NB Last edited by NoBozo; 09-07-2011 at 06:43 PM. |
09-07-2011, 07:47 PM | #17 | |
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Hum...
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09-07-2011, 09:23 PM | #18 |
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When they were new, the Mount's Enterprises had an rpm range of about 200 up to about 450. In their later years, they were not run above 390 to 400 unless absolutely necessary.
The new Cats idle at 550 and max at 1860. They're equipped with 4-to-1 reduction transmissions, giving shaft speeds of 137 to 465. Thus, a slower "dead slow" and a faster "flank" speed. "Full speed" is normally about 410. |
09-08-2011, 12:21 AM | #19 |
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"The new Cats idle at 550 and max at 1860. They're equipped with 4-to-1 reduction transmissions, giving shaft speeds of 137 to 465. Thus, a slower "dead slow" and a faster "flank" speed. "Full speed" is normally about 410."[/QUOTE]
Yup, and Do Not Try To Run These Engines In A Reverse Rotation, as you will foul the air filters, and create a very thick black plume of smoke, reversing their intended intake and exhaust functions! The old Enterprise engines had a mechanically engaged system to change the camshaft and valve timing to facilitate running them in a reverse rotation. Now, if one of these mechanical links ever failed, between the Captains bridge, and the engine room, The M/S Mount Washington would long and since have pushed all of us over into our Neighboring Vermont by now! Terry ________________________
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09-08-2011, 06:19 AM | #20 | |
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09-08-2011, 07:10 AM | #21 | |
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Low RPM
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I stand corrected. I new the engines had to be shut down to go into reverse but did not realize that the actual engine reversed rotation rather then some kind of gear reversal. That and the low RPM. |
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09-08-2011, 08:00 AM | #22 |
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Engines in reverse
You can actually run a modern diesel engine in reverse. It will exhaust through the air cleaner and intake through the muffler. Usually this is done by accident when the starter button is momentarily pushed and catches the engine at exactly the wrong point in its cycle. It is almost impossible to do on purpose.
In a truck with a 10 speed transmission you will have 10 gears in reverse and your reverse will move you forward. When this happens, the older standard manual shut downs which consisted of cutting off the air intake should not be used because the exhaust pressure going out the intake will cause damage. The best method to stop a diesel engine that is running backwards is to put it in a higher gear, hold the brake down, and let the clutch up to stall it. |
09-08-2011, 11:12 AM | #23 |
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what parts are for sale? any small parts similar to Don's ? I would like something to comemorate a bygone era.
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09-09-2011, 02:57 PM | #24 |
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09-10-2011, 03:43 PM | #25 | |
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