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  #21  
Old 07-16-2013, 03:51 PM
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MCA MCA is offline
 
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Quote:
Originally Posted by Mike S View Post
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.
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.
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RV-7 980 hours, IO-390, VP-X (sold)
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Last edited by MCA : 07-16-2013 at 03:55 PM.
  #22  
Old 07-16-2013, 03:54 PM
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Quote:
Originally Posted by twisted-wrench View Post
Will it support ammeter outputs for the EFIS for each battery and alternator?

I could put this in today. I'm right there.
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.
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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.
  #23  
Old 07-16-2013, 03:58 PM
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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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  #24  
Old 07-16-2013, 04:25 PM
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FlyingArcher FlyingArcher is offline
 
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Default 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
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  #25  
Old 07-16-2013, 04:48 PM
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LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
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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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  #26  
Old 07-16-2013, 08:19 PM
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Mike S Mike S is offline
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Quote:
Originally Posted by MCA View Post
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.
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.
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  #27  
Old 07-17-2013, 12:54 AM
flyvans.com flyvans.com is offline
 
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Quote:
Originally Posted by LettersFromFlyoverCountry View Post
What concerns me is how quickly VP turns over its product line.
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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  #28  
Old 07-17-2013, 04:44 AM
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MikeyDale MikeyDale is offline
 
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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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  #29  
Old 07-17-2013, 08:15 AM
David Paule David Paule is offline
 
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Location: Boulder, CO
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Default Weight?

How much will it weigh, and how does that compare to what it's replacing?

Thanks,
Dave
  #30  
Old 07-17-2013, 09:22 AM
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southtarnation southtarnation is offline
 
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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?
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Last edited by southtarnation : 07-17-2013 at 09:29 AM.
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