Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 19-01-2022, 15:07   #1
Registered User

Join Date: Feb 2020
Location: Copenhagen
Boat: Tur 84, 28 ft
Posts: 32
Images: 6
Help with identifying part

Hi there,

I just embarked on a full rewiring project after examining the state of the onboard electrics after my first season and first boat ever. I'm going slowly, drawing up the diagram as I go, making sure I get a complete overview of all systems before touching it. Today I made it to the engine and noticed that this part - which seems pretty crucial as it is directly connected to the starter - is in a pretty bad shape. I guess it needs replacing, but I'm not sure what it is, can someone help me out (pic attached)?

I know this will be a pretty obvious answer, but remember, first boat, first time touching electrics, so please forgive my navet

Thanks!
Attached Thumbnails
Click image for larger version

Name:	IMG_9914.jpg
Views:	976
Size:	435.2 KB
ID:	251507  
pjbori is offline   Reply With Quote
Old 19-01-2022, 15:36   #2
Registered User
 
Spot's Avatar

Join Date: Jan 2019
Location: Minnesota, USA
Boat: 21' trailer sailor & 8' sailing dinghy
Posts: 1,474
Re: Help with identifying part

Hello PJ,
It looks like a relay. To get the best answers for this question, make and model of engine and also of the boat are very helpful, along with approx. location. Someone might come up with a wiring schematic, parts supply source, etc. and then you are in good business.

Hard to see where all the wires go, any chance for a more squared-up picture?
__________________
Big dreams, small boats...
Spot is offline   Reply With Quote
Old 19-01-2022, 15:46   #3
Senior Cruiser
 
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 46,434
Images: 241
Re: Help with identifying part

"Directly connected to starter", I'd guess starting solenoid/relay.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 19-01-2022, 15:57   #4
Registered User

Join Date: Sep 2017
Location: Langley, WA
Boat: Nordic 44
Posts: 2,036
Re: Help with identifying part

It looks like an ancient voltage regulator. How old is the boat? Was there a cover over it?
stormalong is offline   Reply With Quote
Old 19-01-2022, 16:05   #5
Registered User

Join Date: Dec 2016
Location: MED
Boat: Hanse 430e
Posts: 392
Re: Help with identifying part

I agree on Relay, especially since that appears to be a more modern one next to it.
Dogscout is offline   Reply With Quote
Old 19-01-2022, 16:44   #6
Marine Service Provider
 
Emmalina's Avatar

Join Date: Jan 2012
Location: Thailand
Boat: Herreshoff Caribbean 50
Posts: 923
Re: Help with identifying part

I would go with heavy solenoid but certainly not a marine (sealed) unit Windlass maybe
__________________
Steve .. It was the last one that did this !
Emmalina is offline   Reply With Quote
Old 19-01-2022, 22:20   #7
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 3,250
Re: Help with identifying part

Looks similar to a voltage regulator I had with a WWII 32v aircraft generator.
Lepke is offline   Reply With Quote
Old 20-01-2022, 04:52   #8
Registered User

Join Date: Jul 2018
Location: New Bern, NC
Boat: Pearson 323
Posts: 316
Re: Help with identifying part

The largest wire size in the picture would seem to preclude it from being a starter solenoid, if you look closely at the relay armature it has both a small diameter wire winding which is covered and a large diameter winding (shinny copper wire). Id be betting on a generator or alternator control, the dual coils suggest current control, but voltage control is equally as likely.
mjscottinnc is offline   Reply With Quote
Old 20-01-2022, 05:52   #9
Registered User
 
LittleWing77's Avatar

Join Date: Oct 2018
Location: Toronto, Ontario
Posts: 2,643
Re: Help with identifying part

Quote:
Originally Posted by Lepke View Post
Looks similar to a voltage regulator I had with a WWII 32v aircraft generator.
In case anyone missed it, this is Lekpe telling a joke.

Geeze, Lepke - You're always so straightforward and no-BS, I almost missed it myself!

In answer to the OP's question, if it is a starter solenoid, get rid of it. Look at the corrosion on that blue connection. I can see why you're rewiring the boat.

You are using marine wiring techniques and materials, correct?

Fair winds,
LittleWing77
LittleWing77 is offline   Reply With Quote
Old 20-01-2022, 14:38   #10
Registered User

Join Date: Feb 2020
Location: Copenhagen
Boat: Tur 84, 28 ft
Posts: 32
Images: 6
Re: Help with identifying part

Thank you everyone for the responses! I wasn't sure whether @Lepke was being ironic, but I sure get why he would be - the poor thing looks pretty weathered. I'm thinking it might be a dynastart, which (from another forum post) is 'a DC generator that also doubles as the starter motor'. The engine in the post is a Volvo Penta MD6A, same as mine (mine from 1976), so it could fit the profile. Anyone have experience with this?

@stormalong, yes there was a tin box over it

@Spot, model and make above, the location is Zealand in Denmark, Scandinavia.

@Dogscout there is indeed another thing next to it, from Bosch, however I don't have a picture to share yet - will go to the boat in a day or two and take some proper photos that includes that too.

In the meantime, a few more pics of the same thing, different angle. Thanks everyone, really appreciate the input...
Attached Thumbnails
Click image for larger version

Name:	IMG_9913.jpg
Views:	303
Size:	452.1 KB
ID:	251598   Click image for larger version

Name:	IMG_9914.jpg
Views:	226
Size:	440.4 KB
ID:	251599  

Click image for larger version

Name:	IMG_9915.jpg
Views:	264
Size:	453.1 KB
ID:	251600  
pjbori is offline   Reply With Quote
Old 20-01-2022, 15:49   #11
Moderator and Certifiable Refitter
 
Wotname's Avatar

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 14,451
Re: Help with identifying part

Dynastart

Quite possibility. Is the engine fitted with a dynastart unit? Typically a dynastart uses V belt off an external flywheel to start the engine and then becomes a generator after starting. Sometimes a PO will fit an aftermarket alternator and will dispense with the generator aspects of the dynastart while retaining the starting aspects.

As others have stated, it does look like a old time voltage regulator which typically utilises a reverse current coil (relay) and a vibrating voltage control relay. The statement that it was connected to the starter motor confounded the problem as there would be no need to have a voltage regulator connected to a starter motor.

BUT...there would be plenty of reasons to have a old style mechanical voltage regulator connected to a dynastart.

So if the engine does have a dynastart (even if only for the starting aspects), then the mystery item could be a mechanical voltage regulator.
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 20-01-2022, 15:57   #12
Registered User

Join Date: Oct 2020
Location: SE USA
Boat: Hunter 38
Posts: 1,018
Re: Help with identifying part

Quote:
Originally Posted by LittleWing77 View Post
In case anyone missed it, this is Lekpe telling a joke.

Geeze, Lepke - You're always so straightforward and no-BS, I almost missed it myself!

In answer to the OP's question, if it is a starter solenoid, get rid of it. Look at the corrosion on that blue connection. I can see why you're rewiring the boat.

You are using marine wiring techniques and materials, correct?

Fair winds,
LittleWing77
It looks like a common old Ford/Delco etc voltage regulator from the ancient times before semiconductors lol. So 30's for automotive technology, 80's if its on an aircraft.
flightlead404 is offline   Reply With Quote
Old 20-01-2022, 16:07   #13
Moderator and Certifiable Refitter
 
Wotname's Avatar

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 14,451
Re: Help with identifying part

Quote:
Originally Posted by Lepke View Post
Looks similar to a voltage regulator I had with a WWII 32v aircraft generator.
Quote:
Originally Posted by LittleWing77 View Post
In case anyone missed it, this is Lekpe telling a joke.

Geeze, Lepke - You're always so straightforward and no-BS, I almost missed it myself!

..................
If it was a joke, it went over my head as well .

I did think it was (maybe) tongue in cheek but wasn't sure. Some vintage aircraft do have mechanical (relay type) voltage regulators and do have generators. Some might have 32 volt systems although I have never seen one. Lekpe is of an age that allows him to have enough experience that would recall these things yet also intelligent enough to make a good yarn seem true.

FWIW, many small modern jet engines use a gear / shaft driven dynastart arrangement (starter/generator combined unit).

So... please do tell Lekpe
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 20-01-2022, 16:29   #14
Registered User

Join Date: May 2017
Location: Maine USA
Boat: Gulfstar 41' ketch
Posts: 198
Re: Help with identifying part

Sure looks like a voltage regulator to me. My Atomic 4 had one and I could have sworn that they were used with charging "generators" and alternators too in the days of yore.


Fair winds
Ed


(Hey, am I really THAT old!?)
sailor_ed is offline   Reply With Quote
Old 20-01-2022, 17:10   #15
Registered User

Join Date: May 2012
Location: Cygnet, Tasmania
Boat: 12m aluminium centreboarder
Posts: 94
Re: Help with identifying part

External voltage regulator.
adjo is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
identifying Racor part number cooties Construction, Maintenance & Refit 6 13-09-2019 17:31
Help Identifying Part In Battery Compartment jrau18 Electrical: Batteries, Generators & Solar 18 11-01-2017 07:32
Help identifying a part of the rig? Gunnadoit Deck hardware: Rigging, Sails & Hoisting 2 10-12-2016 23:38
Part 1 or Part 3 Insurance Pickled Pirates Dollars & Cents 0 19-04-2011 13:56
UK Flagged Yacht in Caribbean - Part 1 or Part 111 Registration? Ukabroad Training, Licensing & Certification 9 01-11-2008 07:55

Advertise Here


All times are GMT -7. The time now is 14:28.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.