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07 April 2015, 08:57
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#1
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Member
Country: UK - England
Town: Southampton/Poole
Boat name: Black Racketeer
Make: White Shark & Avon
Length: 6m +
Engine: Verado 150
Join Date: Apr 2014
Posts: 191
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Battery
Any harm in running an engine that has electric start with out the battery? And just using the pull start? And what's best to do with the cables that are connected to the engine that are meant to go onto battery?!
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07 April 2015, 09:20
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#2
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RIBnet admin team
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,054
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Depends what sort of charging system it's got. What's the motor?
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07 April 2015, 09:21
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#3
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Member
Country: UK - England
Town: Southampton/Poole
Boat name: Black Racketeer
Make: White Shark & Avon
Length: 6m +
Engine: Verado 150
Join Date: Apr 2014
Posts: 191
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25hp 2 stroke tohatsu - guess it age around 2000
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07 April 2015, 09:58
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#4
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RIBnet admin team
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,054
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Possibly not a good idea. Check with a dealer first as you may mess up the charging system.
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09 April 2015, 07:03
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#5
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Member
Country: UK - England
Town: North Lincs
Boat name: Clam Chowder
Make: Humber
Length: 5m +
Engine: 85 Yam
Join Date: May 2010
Posts: 44
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I don't think it's a good idea, if you have electronics fitted. The alternator will think the battery requires more voltage and fire about 25 volts into the electronics!
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09 April 2015, 07:12
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#6
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Member
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
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Quote:
Originally Posted by Boatintercoms
I don't think it's a good idea, if you have electronics fitted. The alternator will think the battery requires more voltage and fire about 25 volts into the electronics!
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What kind of electronics are you talking about?
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09 April 2015, 07:56
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#7
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Member
Country: UK - England
Town: North Lincs
Boat name: Clam Chowder
Make: Humber
Length: 5m +
Engine: 85 Yam
Join Date: May 2010
Posts: 44
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Quote:
Originally Posted by A1an
What kind of electronics are you talking about?
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Was talking about VHF etc, but as it's only 25 hp outboard he probably not got any thing connected!
I've encounter this problem with my powerboat racing clients, when the battery cut off jumps off or battery cables work loose, the alternator senses 0 volts, so put out more voltage and fries the electronics.
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09 April 2015, 09:47
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#8
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Member
Country: UK - Scotland
Town: Fort William
Make: Ribcraft 585
Length: 5m +
Engine: Yamaha F115
Join Date: Mar 2012
Posts: 2,896
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But if the outboard is not connected to the battery in the first place there will be no spike.
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There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.
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09 April 2015, 15:22
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#9
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Member
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
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Also no load-induced smoothing of the output. If there's no voltage regulator, you'll get unsmoothed pulsed DC at somewhere around 18-24 volts.
Re-reading the OP, if you never plan to use the electrical system, you can probably get away with what you proposed. Be aware that you will likely kill the alternator system, though, which will need repair if you decide you do want to use it.
jky
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09 April 2015, 18:24
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#10
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Member
Country: UK - England
Town: Margate / Ramsgate
Boat name: Bumbl
Make: Scorpion
Length: 8m +
Engine: Yanmar diesel
Join Date: Feb 2002
Posts: 2,837
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That engine won't have an alternator, it'll be stator charging circuit surely ?
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10 April 2015, 06:27
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#11
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Spammer
Country: Canada
Town: Southern Ontario
Boat name: -Unknown-
Make: SeaMax
Length: 4m +
Engine: Merc/Minn Kota
Join Date: Mar 2012
Posts: 216
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Never run without battery, even if totally discharged, unless its an emergency. Could destroy module.
Quote:
Originally Posted by Noble95
Any harm in running an engine that has electric start with out the battery? And just using the pull start? And what's best to do with the cables that are connected to the engine that are meant to go onto battery?!
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10 April 2015, 13:33
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#12
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Member
Country: UK - Scotland
Town: north ayrshire
Boat name: charlie girl
Make: S/R5.4/regal3760
Length: 10m +
Engine: Suzukidf70 2x6lp 315
Join Date: Jul 2009
Posts: 3,745
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As long as you don't have anything connected to the charge output it shouldnt be a problem best to remove the battery leads inside the hood & insulate
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