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07-16-2013, 03:51 PM
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Join Date: Jun 2005
Posts: 693
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Quote:
Originally Posted by Mike S
What about those of us running dual alt/dual batt in a parallel setup?? I could see two of your boxes working with only the addition of a cross feed to the essential buss------or a single box with dual inputs for batt and alt.
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Mike, Both alternator b-leads are wired to the alternator post.
Dual batteries in parallel are fine - they are wired together then a single cable into the battery input terminal. Batteries in parallel are treated like one big battery.
The essential bus wires right to the battery terminal, just like with old relays.
The system is designed to 'fit in' to the way things are wired conventionally, so 99% of builders should be able to tap into the proper place for an e-bus, backup alternator, backup battery, etc.
__________________
Marc Ausman
RV-7 980 hours, IO-390, VP-X (sold)
RV-8 (flying a friend's)
Thinking about low and slow backcountry build.
VAF Advertiser - Aircraft Wiring Guide
Book to help with experimental aircraft wiring.
Last edited by MCA : 07-16-2013 at 03:55 PM.
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07-16-2013, 03:54 PM
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Join Date: Jun 2005
Posts: 693
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Quote:
Originally Posted by twisted-wrench
Will it support ammeter outputs for the EFIS for each battery and alternator?
I could put this in today. I'm right there.
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That's something we're looking into. Would be great to get rid of the external shunt as well. The internal circuitry on the alternator control does measure current, but we need to convert it to a format that mimics a shunt.
__________________
Marc Ausman
RV-7 980 hours, IO-390, VP-X (sold)
RV-8 (flying a friend's)
Thinking about low and slow backcountry build.
VAF Advertiser - Aircraft Wiring Guide
Book to help with experimental aircraft wiring.
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07-16-2013, 03:58 PM
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Join Date: Nov 2010
Location: lake charles, La.
Posts: 699
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I like solid state, mechanical solenoids require maintenance and will quit working at the most inopor tune time. Having everything in one nice ss box is also very good. My rv8 battery is in the fwd baggage, so the thing for me is to have the battery lead on the same side of box as the other connections coming from the interior of aircraft. That would facilitate the one firewall penetration that concerns me.
Bird
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Bird
rv8 entire airframe at airport now, painting done, intersection and gear upper and lower fairings done, maybe order engine around first of year or before the next rate increase.
"to fly is a privilege that I am so thankful to God for"
http://www.mykitlog.com/tcb328/
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07-16-2013, 04:25 PM
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Join Date: Dec 2005
Location: Andernos les Bains, France
Posts: 244
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Great Idea
I was already considering to go solid state for my master relay and to get rid of the starter solenoid by using the starter's built-in as SkyTec recommends here (see Rewire the NL starter link).
Being late in the build has some positive aspects like this one  when the perfect product appears on the market BEFORE you have reached the building stage where you need it. 
Congrats and count me in as a future buyer.
Cheers
__________________
Daniel Mouly
VAF #778 - [2013 payment done]
RV-9A Emp. & Wings 95%, Fuse 70%
Austin Healey 3000 MKIII fully restored
LFCD (Andernos Les Bains), France
Construction Log comments in French (not really up to date, sorry)
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07-16-2013, 04:48 PM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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Were I still building, I might be interested in the product. What concerns me is how quickly VP turns over its product line.
But, yeah, it definitely has some electrical sex appeal.
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07-16-2013, 08:19 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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Quote:
Originally Posted by MCA
Mike, Both alternator b-leads are wired to the alternator post.
Dual batteries in parallel are fine - they are wired together then a single cable into the battery input terminal.
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My system is a bit different than that------each alternator charges a battery through the normal regulator and switch setup. Both systems are independent of each other, what I describe as parallel systems, only cross connection is a Schotkky diode allowing the main to feed into the E buss. The aux system feeds the E buss directly. If the aux system goes south, the E buss gets its power seamlessly through the cross tie/Schotkky diode.
At engine start I already have the EFIS powered up on the aux circuit, so I get engine readings instantly, and no brown out due to starter draw.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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07-17-2013, 12:54 AM
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Join Date: Feb 2005
Location: Zurich, Switzerland
Posts: 466
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Quote:
Originally Posted by LettersFromFlyoverCountry
What concerns me is how quickly VP turns over its product line.
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i agreed on that when the vp200 was discontinued without proper feature replacement.
but in this case, the product is fully complementary (even to the awesome vp200) as well as the newer vp products.
as a reference point, there is a similar (but old fashioned, non-solid-state) product that does more or less the same, "Lamar MC10" at >1000$. price being probably one of the reason why it never was adopted much in the experimental scene.
one notable feature it has is a massive "standard" ground power plug.
pricing would have to be significantly lower were i building again and considering the new VP Primary Power "PPX".
has there been an official or working name for the product already?
PPX kind of would make sense and is easy to reference.
good luck,
bernie
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Bernie Daenzer, Alex Lichtensteiger
www.flyvans.com
RV-7A
S/N 72072, Flying!
HB-YMT (Switzerland)
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07-17-2013, 04:44 AM
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Join Date: Aug 2012
Location: Garden City Texas
Posts: 878
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I need one now! I may be able to wait to the end of the year. As a first time builder this would simplify my installation greatly. I would be willing to pay the price is listed.
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07-17-2013, 08:15 AM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
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Weight?
How much will it weigh, and how does that compare to what it's replacing?
Thanks,
Dave
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07-17-2013, 09:22 AM
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Join Date: Oct 2008
Location: Punta Gorda, Fl
Posts: 325
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I can wait a couple months and will have to move on if its not ready but sure would like to get on the first run list otherwise.
Wish list:
Security, ideally a proximity key fob that locks the ppx when i walk away. Or a numeric code i can enter into the efis to allow power to the starter circuit.
Eliminate the need for the massive skyview ammeter shunt.
Comes with the required indicator/reset button with a pre labeled window.
How soon can i send you my money for one?
__________________
Jesse
'89 RV-4, N2626C - purchased flying
Converted to Fastback - Sliding Canopy - Tall Gear
Dynon Skyview w/ acc. & VP-x Sport
Catto 3-Blade (gen. 1)
Based: KPGD
Last edited by southtarnation : 07-17-2013 at 09:29 AM.
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