Reply
 
Thread Tools Display Modes
 
Old 05-21-2014, 01:34 PM   #41
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 13,712
VERY VERY good point Ski,
From her reports that's probably the case.
Missed that one.

2200rpm rated power point is a very low rpm for a small engine. I would think it would be about 3000 or 2800 to 3600.
__________________
Advertisement

__________________
Eric

North Western Washington State USA
Nomad Willy is online now   Reply With Quote
Old 05-21-2014, 03:41 PM   #42
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Country: USofA
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 914
Send a message via AIM to janice142 Send a message via MSN to janice142 Send a message via Yahoo to janice142 Send a message via Skype™ to janice142
Found, purchased and delivery this weekend or Tuesday. [14x12 being re-shaped to 14x10.]

Next, haul, swap props, plug the two exhausts and then except for test runs (lots of those) I'll be on my way. Using the boat... what a concept, eh?

Life is great and I'm so happy I'm almost bouncing. Of course that might be because of Ray Stevens on the radio. I love that squirrel song.
__________________

__________________
Janice aboard Seaweed, living the good life afloat...
http://janice142.com
janice142 is offline   Reply With Quote
Old 05-21-2014, 06:34 PM   #43
Guru
 
AusCan's Avatar
 
City: Adelaide
Country: Australia
Vessel Name: Kokanee
Vessel Model: Cuddles 30 Pilot House Motor Sailer
Join Date: Jul 2012
Posts: 2,095
All sounds good Janice. Keep on bouncing.

Eric - the early 1970's MD-1 & MD-2 volvo's are slow revving, 2000 -2300 rpm.
The later 80's vintage such as my MD17 are good for 3000 rpm.

Janice - Here's a MD-2 workshop manual, in case you don't have one.
Boatinfo - Volvo Penta MD1, D1, MD2, D2 Service Manual
AusCan is offline   Reply With Quote
Old 05-22-2014, 08:02 AM   #44
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,525
Regardless of the RPM most diesels will live longest at 1HP / 3 Cubic inch of displacement.

Higher RPM increases HP and the wear rate.

If I remember the MD 1 is about 30 inch disp so shoud run >forever< loaded to 10 or so hp. 1/2 GPH or less .

IF the boat goes at a realistic speed (5+K underway) at 850 RPM I would think the existing prop is fantastic. Even if 1200-1500 is needed its about right.

For folks that need minor thrust (under 25- 40 hp) IF the boat has the room a 2 blade will frequently be a better choice than 3 blade.

The opening diameter will need closer to 20% prop diameter as tip clearence if the hull is lightly built , to not make noise.

The blade area must be sufficient for the HP.

On our 90/90 the prop is a 19/13 TWO blade , but with a narrow blade from a motor boat prop , not a really skinny sail prop. Nice low induced drag.

This is efficient 3/4GPH at 6-6.5K ditch crawling. MD 3B / 18,000 LB Disp at full load.

And of course when locked in its indexed location , there is almost no prop drag from form , just from the surface area .

Skeens Elements of Yacht Design is the place for watching the changes wrought be wider blades , larger diameter , or changes in shaft speed.
FF is offline   Reply With Quote
Old 06-14-2014, 11:42 PM   #45
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Country: USofA
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 914
Send a message via AIM to janice142 Send a message via MSN to janice142 Send a message via Yahoo to janice142 Send a message via Skype™ to janice142
Update: The new 14x10 prop was installed last week and she moves very nicely. Seaweed has absolutely ZERO wake. Nothing. Doesn't matter if I'm doing five or less -- there's just ripples aft.

Sweet.

Her "sweet spot" is 4.4 and she must moves through the water so nicely. I'm beyond delighted.

Was "set" to leave in the morning but alas, forgot to bring the propane down to the boat and it's locked up. So, leaving when I get it. The bilges are stocked and we are ready.

Paper charts laid out and the newest version of OpenCPN installed. It's better incidentally. The old version would sometimes lose the GPS puck. This one, when that happens you can simply shut down the USB port, then restart the USB. The older version required a restart of OpenCPN -- this is a big improvement.

It (OpenCPN) also has AIS built in -- if you've got a way to receive the signal, it will display. Looked spiffy, though I don't have one of the gizmos. Just in case you wondered.

Has tides and more. I think it's nifty and frankly, the Help File is one of the best I've ever used. That's why I donated. (OpenCPN is free, but they like donations of course.)

Life is wonderful afloat. I'm so fortunate -- truly blessed.
And my new engine? Well, I could not be happier to finally have a sweet little diesel.
__________________
Janice aboard Seaweed, living the good life afloat...
http://janice142.com
janice142 is offline   Reply With Quote
Old 06-15-2014, 01:52 AM   #46
Guru
 
AusCan's Avatar
 
City: Adelaide
Country: Australia
Vessel Name: Kokanee
Vessel Model: Cuddles 30 Pilot House Motor Sailer
Join Date: Jul 2012
Posts: 2,095
Nice to hear it all worked out.
Bon Voyage!
AusCan is offline   Reply With Quote
Old 06-22-2014, 04:32 PM   #47
Guru
 
River Cruiser's Avatar
 
City: UMR MM283
Country: US
Vessel Name: Northern Lights II
Vessel Model: Bayliner 3870
Join Date: Jan 2013
Posts: 1,226
Best of luck on your new diesel power unit and your voyage, keep us updated.
__________________
Ron on Northern Lights II
I don't like making plans for the day because the word "premeditated" gets thrown around in the courtroom.
River Cruiser is offline   Reply With Quote
Old 06-22-2014, 04:40 PM   #48
Moderator Emeritus
 
jwnall's Avatar
 
City: St. Marks, Florida
Country: US
Vessel Name: Morgan
Vessel Model: Gulfstar 36
Join Date: Sep 2012
Posts: 3,621
Where you bound for, Janice?
__________________
John
jwnall is offline   Reply With Quote
Old 06-22-2014, 05:26 PM   #49
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Country: USofA
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 914
Send a message via AIM to janice142 Send a message via MSN to janice142 Send a message via Yahoo to janice142 Send a message via Skype™ to janice142
Quote:
Originally Posted by jwnall View Post
Where you bound for, Janice?
I was taking advantage of this weather window we've been having. Since a week ago Friday (day ten and counting) one to two foot seas for the Gulf of Mexico. Truly, it does not get much better.

BUT I took the advice of an expert. When we ordered the two fan belts for Seaweed (she's got a starter/generator) I asked about ordering a second pair "just in case" and was assured that these belts do not break.



Well, as you can see (isn't hindsight always 20/20?) the bracket is slightly cocked and that torque caused the front belt to become loose. I have a turnbuckle aboard and was able to wedge between the place where Hercules could crank her (just above the exhaust hose on the left) and the starter/generator.

I tightened her each day.

Then, on Thursday evening while cruising along nicely the engine bogged for a moment. I turned on the auxilary fuel pump and she again ran smoothly. A look in the bilge and all seemed well.

That night I anchored, and all was normal. In the morning there was oil in the bilge -- none the night before -- so I cleared out about a quart and then looked to the engine again. That's when I spotted the fan belt, broken.

This motor requires both to start, so I radioed TowBoatUS. No answer. None, on all three radios. (I knew I was broadcasting because I could hear on the others.) Still, I did what I've never done before and made a "Radio Check on Channel 16" which was promptly answered by SeaTow.

The SeaTow fellow did a phone relay to the Steinhatchee TowBoatUS captain who came for me. I provided coordinates from my log book. TowBoatUS was to arrive by 10 a.m. but one of his two motors quit on the way so actually arrival time was after 11.

Not a biggie for me I was at anchor and life is the same rather I'm tied to a dock or at anchor -- at least when the sun is shining. Sipping cold tea and relaxing with a book...

The trip back to Steinhatchee (there's wifi here) was uneventful and now I'm waiting for delivery of four fan belts.

Side note: Called a car place in St Pete and was quoted $40-$45 each though he had just one in stock. Next tried Grainger in St Pete. Four available for $12 each. Including shipping: $70. Ordered at 2:30 and shipped by 4:30 with arrival predicted for Monday. I'm pleased.

So currently I'm at a dock just past the bridge -- it belongs to a friend of the TowBoat captain and the owner even ran an extension cord for me. I haven't been ashore.

Yesterday I regrouped. Today I'm almost feeling human. And hopefully tomorrow all can be fixed so I can be on my way again. From the picture above it seems apparent the bracket needs to come out 1/4" on the engine part -- some washers should handle that.

Anyway, that's tomorrow. Today I'm relaxing. And when I get done, I'll rest.

Lesson Learned: The next time an expert tells me something that seems wrong I'm going to go with my gut instinct. I KNEW having spare belts was smart and let myself be dissuaded. I won't make that mistake again -- not on purpose anyway.

So John, are you sorry you asked?! I'm heading south -- a stop to visit a friend in St. Pete, and then to the Keys. Beyond that, nothing is certain.
__________________
Janice aboard Seaweed, living the good life afloat...
http://janice142.com
janice142 is offline   Reply With Quote
Old 06-22-2014, 05:51 PM   #50
Moderator Emeritus
 
jwnall's Avatar
 
City: St. Marks, Florida
Country: US
Vessel Name: Morgan
Vessel Model: Gulfstar 36
Join Date: Sep 2012
Posts: 3,621
Quote:
Originally Posted by janice142 View Post

So John, are you sorry you asked?! I'm heading south -- a stop to visit a friend in St. Pete, and then to the Keys. Beyond that, nothing is certain.
Nope. Glad I asked. Only thing I am sorry about is that you didn't stop over in St. Marks so that I could meet you.

Sorry to hear about the troubles. Sounds as if you are coping in your usual unflappable style, however, They do say that life is a series of learning experiences. And Steinhatchee is not all that bad a place to spend a little time.
__________________
John
jwnall is offline   Reply With Quote
Old 06-22-2014, 06:09 PM   #51
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Country: USofA
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 914
Send a message via AIM to janice142 Send a message via MSN to janice142 Send a message via Yahoo to janice142 Send a message via Skype™ to janice142
I was concerned that this weather window would collapse. Frankly, I've never (not in 1.5 years) seen ten days of 1 to 2 foot seas for the Gulf of Mexico. And the prediction continues through later in the week. I'd like to get down to Tarpon Springs so that I'll be "inside" for a while.

The boat was running so nicely too.
But I've learned: experts know a lot but sometimes intuition or instinct should be listened to. If I'd had belts I probably could have effected a fix without involving TowBoatUS. The weather is perfection out there too.

Just beautiful traveling weather with fish out the kazoo. What surprised me was that I saw no fishing boats taking advantage of the schools of fish that are literally everywhere.

The dolphin were fat and happy. I even saw a frigatebird. Hadn't seen any of those since Tropical Storm Isaac a couple years ago....

Sorry I missed you and your bride though. Maybe on my way back...
__________________
Janice aboard Seaweed, living the good life afloat...
http://janice142.com
janice142 is offline   Reply With Quote
Old 06-23-2014, 05:33 PM   #52
Guru
 
Shoalwaters's Avatar
 
City: Rodney Bay Lagoon
Country: St. Lucia, West Indies
Vessel Name: "Dragon Lady"
Vessel Model: DeFever 41
Join Date: Feb 2008
Posts: 681
Janice, a couple things occured to me as I read your post about the belt problem:

1. The fact that you could tighten your turnbuckle each day suggests that something was moving as you tightened. The hose-clamp on the starter/generator (Dynastart?) might be the culprit, if that is how the adjusting bracket is attached.

2. "This motor requires both (belts) to start". Forgive me if I'm preaching to the choir, but I believe the levers on the valve covers are compression-lifters. Raising them to the vertical position will allow the engine to turn easily. Move the levers back again to run. Makes life easier for belts and battery. Equally, "Hercules" could hand-crank the engine without raising a sweat!

3. You mention switching on the auxilary fuel pump when the engine bogged, and subsequently finding oil in the bilge. Did you find the reason for either?
Attached Thumbnails
Click image for larger version

Name:	Volvo MD2.jpg
Views:	123
Size:	163.3 KB
ID:	30792  
__________________
Mike
If all else fails, read the instructions
If it ain't broke, don't fix it
Shoalwaters is offline   Reply With Quote
Old 06-23-2014, 05:46 PM   #53
Guru
 
City: gulf coast
Country: pinellas
Join Date: Jun 2014
Posts: 2,199
Compression relief valves are great to have. In case of an almost dead battery open the valves and get it spinning then shut the valves, or even just one, to fire it off. Can really save the day.
bayview is online now   Reply With Quote
Old 06-23-2014, 05:53 PM   #54
Guru
 
LarryM's Avatar
 
City: League City, TX
Country: USA
Vessel Name: Pelago
Vessel Model: Wellcraft 3300 Coastal
Join Date: Aug 2011
Posts: 843
Janice,

Mike mentioned the mounting bracket and I remember it as being pretty substantial. I had a MD-2 in a sailboat long ago. I had to rebuild the dynastart and changed belts a couple of times. I don't know how your belts could be that far out of alignment unless the bracket is very loose, or broken.

I would definitely find out why this is happening. The bracket is mounted over an inspection cover on the side of the block and shares the same mounting bolts. If it is loose or broken, you could be losing oil there.
Attached Images
 
LarryM is offline   Reply With Quote
Old 06-23-2014, 07:06 PM   #55
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Country: USofA
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 914
Send a message via AIM to janice142 Send a message via MSN to janice142 Send a message via Yahoo to janice142 Send a message via Skype™ to janice142
Hello Shoalwaters. Yes, you're correct about the compression levers. Both raised to start, then lower aft one first when RPMs are up, followed by front when the engine catches. She will start without that process however, that's the way I was advised to crank her up.

The fellow was here. He shimmed at the bracket versus engine side. Several washers moved it out a bit and now it looks better.

The oil leak was one bolt on one of the two inspection plates on the starboard side under the starter/generator. It was loose. Vibration -- after all, she is a diesel.

I think all is well and after I re-up my oil supply I'll be leaving in the morning. At least the next day will be without cell phone coverage so I'll be missing my imaginary friends. (That's y'all.)

Later today I'll chase down the owner of this dock and pay him, then go anchor for the night. No need to pay dockage now that she's fixed.

The fellow who fixed her was a gem -- very professional and not too $$ either. He arrived with tools to do the job -- had been here earlier to look at the problem and a reasonable price fixed everything. I'm pleased.

Am anxious to be underway. The weather window is still open (1 to 2 foot seas in the Gulf of Mexico) so I want to take advantage and get further south ASAP.

Life is wonderful afloat. Off to re-fill the water tank and toss the trash. I found a dumpster when I went to pick up the new belts.

Me.
__________________
Janice aboard Seaweed, living the good life afloat...
http://janice142.com
janice142 is offline   Reply With Quote
Old 06-23-2014, 08:42 PM   #56
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Country: USofA
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 914
Send a message via AIM to janice142 Send a message via MSN to janice142 Send a message via Yahoo to janice142 Send a message via Skype™ to janice142
Quote:
Originally Posted by Shoalwaters View Post
Janice, a couple things occured to me as I read your post about the belt problem:

1. The fact that you could tighten your turnbuckle each day suggests that something was moving as you tightened. The hose-clamp on the starter/generator (Dynastart?) might be the culprit, if that is how the adjusting bracket is attached.

2. "This motor requires both (belts) to start". Forgive me if I'm preaching to the choir, but I believe the levers on the valve covers are compression-lifters. Raising them to the vertical position will allow the engine to turn easily. Move the levers back again to run. Makes life easier for belts and battery. Equally, "Hercules" could hand-crank the engine without raising a sweat!

3. You mention switching on the auxilary fuel pump when the engine bogged, and subsequently finding oil in the bilge. Did you find the reason for either?

For future reference, once started, is there a reason not to run the engine with just one belt? Or none? Does that belt system have anything to do with the water pumps like on my old Beast?

You'd also asked about the hose clamp -- nope. The yellow arrow is the adjustment point I was messing with. I've got a turnbuckle that the forked end fit on the starter/gen brace (just below where the bolt goes through)

There are two bolts at the bottom but I didn't touch them.
My turnbuckle went from the pivot point (top yellow arrow) to the place where the hand crank attaches. I used a block of wood on the crack part so I could get a good wedge in there.

It would have been better to use a long pry bar. I have a piece of stainless tube I could have used but the turnbuckle was handier -- and I'd had to use it with the Beast as the belts stretched.

According to Calder, up to the first 100 hours belts stretch. And mine certainly did on the Beast. I hated that monster and learned way more than I ever intended to about it.
__________________
Janice aboard Seaweed, living the good life afloat...
http://janice142.com
janice142 is offline   Reply With Quote
Old 06-23-2014, 08:55 PM   #57
Guru
 
janice142's Avatar
 
City: St. Pete, FL
Country: USofA
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 914
Send a message via AIM to janice142 Send a message via MSN to janice142 Send a message via Yahoo to janice142 Send a message via Skype™ to janice142
Thanks Larry - you were right about the inspection plates. The aft one, center bolt at the bottom was not tight. It is now.

It's a dead simple engine. The alignment for the starter/generator was difficult -- no brackets came with the engine so the ones I have were created. It looks better now.

__________________

__________________
Janice aboard Seaweed, living the good life afloat...
http://janice142.com
janice142 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 02:11 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012