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Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

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  #11  
Old 09-06-2019
1984Lodge's Avatar
1984Lodge 1984Lodge is offline
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Location: Temple Terrace
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Originally Posted by Siam Express View Post
Jumped the coach so it's all good .. just need to know what is the best way to add a engine battery pack .. I need to know best solution to separate "house batteries " and make a new bank of "start batteries" and how to wire the alternator up to both banks ...or do I need to add another alternator? One for the house and one for the start ... thank you for your concern.. it just needed a lil more juice to get it going .. terrible design for such a well designed coach.. it must have been Friday at 4:30 when the guy was designing the start up system
There is a design intent, for the coach to be used regularly... haha But seriously, the generator battery is separated by a diode which allows it to be charged and not discharge with the house batteries. This gives you the opportunity to start the generator and charge the house batteries if they are dead. It is not a perfect solution, but it does provide a backup. Also they were thinking that having dedicated starting batteries and house batteries would be more batteries that you would need....
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Jeff LoGiudice
1984LodgeJeff@gmail.com
Temple Terrace, Florida
1984 Bluebird PT40
#F063411 6V92TA & MT654CR
& 1986 MCI 102A3
6V92TA & HT740

http://www.bbirdmaps.com/index.cfm #460
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  #12  
Old 09-09-2019
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Siam Express Siam Express is offline
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Thank You and im going to put a Solor 400 watt set up for now to offset the generator usage .. run the TV and some plugs so the kiddos can watch TV and it wont kill the coach
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Fred and Karen Trujillo
2 Siamese Cats Ling Ling & Chai
Grants Pass, Or
1987 pt40 the Siam Express
1966 Impala ss Convertible
1983 BMW 533I
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  #13  
Old 09-09-2019
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Mikenjackie Mikenjackie is offline
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You said 6v Trojans. They're great for house batteries, but don't put out enough current to spin the engine fast. You said "it needs a little more juice"; that would be why. BB made them (PT-40's, anyway) with 4 x 12v batteries in parallel as a combined house/start bank. Keep your Trojans for the house, excellent for long term lower current draw, & get 1 or 2 12v ones for engine start... I read somewhere that minimum 750 CCA is required.

Look through the threads, Michael Putz posted a circuit diagram of how the 2 banks should be wired. He has an FC but the wiring is the same regarding batteries. I'm on a loaner PC, don't have the file handy, but if you can't find the post, PM me & i'll send it to you once I get back to my own system
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"Silver Shadow"1988 PT-40 Concept Coach - Sold!
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