Reply
 
Thread Tools Display Modes
 
Old 02-01-2015, 10:35 PM   #1
Platinum Member
 
markopolo's Avatar
 
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 7,512
Default Dual alternator kit for the Ram Promaster announced

Nations Starter & Alternator has put a photo of their dual alternator kit for the Ram Promaster on their Facebook page: https://www.facebook.com/permalink.p...d=147260728552

Quote:
Attention Dodge Promaster owners and Customizers! That are looking to convert your vehicle to a engine driven generator we have the first dual alternator kit on the market! This can give you the flexibility to have a mobile electrical supply- The possibilities are endless!


http://www.nationsstarteralternator.com
Attached Images
File Type: jpg Nations dual alternator kit for Ram Promaster.jpg (21.9 KB, 779 views)
__________________

__________________
Two bikes on sliding cargo box: https://www.classbforum.com/forums/m...icture206.html & 1997 GMC Savana 6.5L Turbo Diesel Custom Camper Van Specifications: https://www.classbforum.com/forums/f...vana-5864.html
markopolo is offline   Reply With Quote
Old 02-01-2015, 11:27 PM   #2
Platinum Member
 
wincrasher's Avatar
 
Join Date: May 2014
Location: Greer, South Carolina
Posts: 2,500
Default Re: Dual alternator kit for the Ram Promaster announced

Holy crap!

198 amps at idle!

http://www.nationsstarteralternator....-3.6-270xp.htm
__________________

__________________
2019 Winnebago Travato GL
Follow my blog: https://www.wincrasher.blogspot.com
Our Facebook group is: https://www.facebook.com/groups/ClassBCamperVans/
wincrasher is offline   Reply With Quote
Old 02-01-2015, 11:50 PM   #3
Platinum Member
 
Join Date: Aug 2010
Location: Minnesota
Posts: 6,353
Default Re: Dual alternator kit for the Ram Promaster announced

That may not be the alternator they are using, as it is the one for the van itself. With a separate mount, they can use one of the dedicated ones, probably from DC Engineering, but could be other. They can get huge specs out of them at idle because they can spin them as fast as they want and use an internal regulator if they chose.
booster is offline   Reply With Quote
Old 02-02-2015, 01:58 AM   #4
Platinum Member
 
Join Date: Jun 2012
Location: SoCal
Posts: 789
Default Re: Dual alternator kit for the Ram Promaster announced

So what is the amp limit at idle and what will it run?
stanw909 is offline   Reply With Quote
Old 02-02-2015, 01:56 PM   #5
Platinum Member
 
markopolo's Avatar
 
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 7,512
Default Re: Dual alternator kit for the Ram Promaster announced

There's not enough info to know. If they use the high amp alternator then the specs give an idea of what to expect.

Idle Amperage 180
Hot Idle Amperage 165

Booster previously posted the DC Power Engineering link: https://www.dcpowerinc.com/fit/Chrys...formance_sheet

The "average" idle of 198A was at around 2,250 alternator shaft rpm. 3 or 3.5 to 1 ratio is noted. (alternator shaft / engine)

You'd need to know the exact ratio used in the end setup.

There should be enough DC amps there to run an AC air conditioner through an inverter though assuming adequate wiring etc.
__________________
Two bikes on sliding cargo box: https://www.classbforum.com/forums/m...icture206.html & 1997 GMC Savana 6.5L Turbo Diesel Custom Camper Van Specifications: https://www.classbforum.com/forums/f...vana-5864.html
markopolo is offline   Reply With Quote
Old 02-02-2015, 06:05 PM   #6
Platinum Member
 
Join Date: Dec 2010
Posts: 1,928
Default Re: Dual alternator kit for the Ram Promaster announced

I actually think this is a misnommer. there is no doubt that the extra alternator helps recharge the battery faster. however the air conditioner runs off the battery and inverter. it is not a direct power transfer from the alternator to the inverter. because battery charging is not 100 percent efficient(far from it) a bettery pack running the AC would gradually decrease eve en if the xtra alternator system is pushing amps at it.
gerrym51 is offline   Reply With Quote
Old 02-02-2015, 06:23 PM   #7
Platinum Member
 
markopolo's Avatar
 
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 7,512
Default Re: Dual alternator kit for the Ram Promaster announced

The inverter will use power directly from the alternator and yes a battery(ies) need to be in the mix.

Booster's test setup showed his system held 13.7v while running the microwave: http://www.classbforum.com/phpBB2/vi...hp?f=12&t=3115

A fully charged battery is only 12.7v or 12.8v. Booster's system holding at 13.7v means that the alternator was supplying all the current needed.

I could hold 12.9v when running the microwave oven in my van with an old stock alternator: http://www.classbforum.com/phpBB2/vi...&t=2668#p15768
__________________
Two bikes on sliding cargo box: https://www.classbforum.com/forums/m...icture206.html & 1997 GMC Savana 6.5L Turbo Diesel Custom Camper Van Specifications: https://www.classbforum.com/forums/f...vana-5864.html
markopolo is offline   Reply With Quote
Old 02-02-2015, 07:02 PM   #8
Platinum Member
 
Davydd's Avatar
 
Join Date: Aug 2007
Location: Minnesota
Posts: 4,187
Default Re: Dual alternator kit for the Ram Promaster announced

The Advanced RV M-B Sprinter second alternator charges batteries with DC current and the inverter in turn draws from the batteries to change to AC power. I don't think their is any direct to inverter current. The reason for the second alternator is the engine alternator is tied into M-B's sophisticated computer system that can't be diddled with. The computer controls that alternator and would not always be compatible with house needs. So, the second alternator is independent and works with the Silverleaf system. Of course you'll get more capacity and higher current with it for faster charging as a benefit.
__________________
Davydd
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
Davydd is offline   Reply With Quote
Old 02-02-2015, 07:08 PM   #9
Platinum Member
 
markopolo's Avatar
 
Join Date: Oct 2006
Location: New Brunswick, Canada
Posts: 7,512
Default Re: Dual alternator kit for the Ram Promaster announced

If wires from the alternator bolt to the batteries and wires from the same batteries bolt to the inverter then there's direct linkage. Current will flow along the path of least resistance.
__________________
Two bikes on sliding cargo box: https://www.classbforum.com/forums/m...icture206.html & 1997 GMC Savana 6.5L Turbo Diesel Custom Camper Van Specifications: https://www.classbforum.com/forums/f...vana-5864.html
markopolo is offline   Reply With Quote
Old 02-02-2015, 07:12 PM   #10
Platinum Member
 
Join Date: Aug 2010
Location: Minnesota
Posts: 6,353
Default Re: Dual alternator kit for the Ram Promaster announced

If there is no direct to the inverter from the alternator, I would think you would need a massive 12v to 12v battery charger, and the charge from it would still need to be connected to the batteries, and thus the inverter. Maybe I am missing something.

When the ARV is on shore power, does the air conditioner still run off the inverter, or is there a transfer switch to the shore 110v? I think someone here said that the Roadtreks don't use the transfer switch, but that might have been only for generators.
__________________

booster 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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 12:31 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.