Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 11-10-2006, 07:11   #1
Registered User

Join Date: Aug 2006
Location: cairns australia
Boat: now floating easy37
Posts: 636
Images: 41
smart regulators

given that these can regulate a large amount of charge from solar panels why would it be a bad idea to run the charge coming from 2 9.9 into it to gain the advantages that these regulators give your batteries
sean
__________________

__________________
northerncat is offline   Reply With Quote
Old 11-10-2006, 10:13   #2
Registered User

Join Date: Jan 2005
Location: Seattle area (Bremerton)
Boat: C&C Landfall 39 center cockpit "Anahita"
Posts: 1,076
Images: 6
Please rephrase the question in more specific terms.
__________________

__________________
Rick is offline   Reply With Quote
Old 11-10-2006, 10:40   #3
Registered User
 
PBzeer's Avatar

Join Date: Jan 2006
Location: Cruising
Boat: Ontario 32 - Aria
Posts: 133
External "smart" regulators are designed to work with hi-output alternators. If used with the typical "automotive" style alternator, they will eventually burn up the alternator.
__________________
John
Ontario 32 - "Aria"

Within a dream, we may find a fantasy,
But never within a fantasy, will we live a dream.
PBzeer is offline   Reply With Quote
Old 11-10-2006, 12:37   #4
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,056
Sean, what PB is alluding to is that most "automotive" alternators (and I'd guess your outboard regulators too) are designed to run at a fraction of their rated power. The internal regulator cuts back very quickly to a low charging rate, and each design (there are dozens, each IS different) has different amounts of brains.

A smart regulator is usually designed to run the alternator at full output for a significant time--so unless the alternator, or regulator, has a heat sensor that will keep the alternator running cool, you may burn it out. If the alternator is robustly built, well cooled, well designed...sure, it might work. I'm just not sure that a 9.9's alternator really is going to meet any of those goals.<G> Time to contact the maker & ask them.
__________________
hellosailor is offline   Reply With Quote
Old 12-10-2006, 10:52   #5
Registered User

Join Date: Jan 2005
Location: Seattle area (Bremerton)
Boat: C&C Landfall 39 center cockpit "Anahita"
Posts: 1,076
Images: 6
IF that is the question....

Most two-cycle outboard engines, 9.9 hp and below, use simple pickup coils, one diode, and the rotating magnets on the engine rotor to generate voltage. Regulating these "lighting coils" (which is what they were designed to do...drive running lights and not really charge batteries) require shunt regulators. Most solar panel regulators are series regulators. If you use a series regulator on the output of a lighting coil the diode may get destroyed by BEMF unless you wire in a small shunt load, like a 14V light bulb (O.K. a "12V" bulb that will survive up to 16V).

You may have to de-rate the output power rating of a solar series regulator to use with the lighting coil output due to the higher pulse currents delivered on a continuous power rating basis (like use a 100-plus Watt rated regulator on a 50W rated outboard coil).

I don't know about the 4-cycle 9.9 dc outputs, whether or not the manufacturers have actually put in the expense of a real alternator...any comments?
__________________
Rick is offline   Reply With Quote
Old 13-10-2006, 04:51   #6
Registered User

Join Date: Aug 2006
Location: cairns australia
Boat: now floating easy37
Posts: 636
Images: 41
thanks for the replys, i was basically wanting to get the most out of my motors when i run them and wondered why other people didnt do this i wasnt aware of any reasons but i was sure there must be some
sean
__________________
northerncat is offline   Reply With Quote
Old 13-10-2006, 11:45   #7
Registered User
 
Sonosailor's Avatar

Join Date: Mar 2003
Location: Fredericton, NB, Canada in the summer and fall; Caribbean in winter and spring aboard Cat Tales.
Boat: FP Tobago 35 (and a H-21 SE)
Posts: 550
Images: 8
I am certainly no expert, but I doubt that your 9.9 engines put out so much power that your house batteries need any protection. Any regulation will cut back the power and drain the wallet. I would go direct and monitor your voltage meter for quite a while before worrying about it.

Do you know your amp-hour output?
__________________
Sonosailor is offline   Reply With Quote
Old 13-10-2006, 16:48   #8
Registered User

Join Date: Aug 2006
Location: cairns australia
Boat: now floating easy37
Posts: 636
Images: 41
8 per motor apparently
sean
__________________
northerncat is offline   Reply With Quote
Old 14-10-2006, 05:45   #9
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,592
Images: 240
Most small outboard (manual start models) engine Lighting Supplies (under flywheel mount) generally provide un-regulated 12V A.C. current, which requires either a regulator for lighting, or charging rectifier kit for D.C. battery charging.
Do not try to recharge your battery with an AC Lighting Coil!
__________________

__________________
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
Reply

Thread Tools
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
mppt Regulators northerncat Electrical: Batteries, Generators & Solar 34 28-05-2011 23:49
Is there such a thing as an "all purpose" smart charge controller? ssullivan Electrical: Batteries, Generators & Solar 16 29-07-2006 13:44
Solar Regulators Talbot Electrical: Batteries, Generators & Solar 20 27-07-2006 09:05
BASIC Alternator Testing GordMay Construction, Maintenance & Refit 9 01-09-2003 03:03



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 18:31.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.