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  #11  
Old 05-23-2018, 12:00 AM
control control is offline
 
Join Date: Feb 2006
Location: Stockholm, Sweden
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The emag needs manifold pressure (it runs without but in a "limp home" mode). Small task, just a T from your map sensor.

Agree about the timing but still it is something new to learn and you cant just ask any AP for help and expect them to immediately know how to do it.

I would probably have gone with a dual emag solution myself if that was an option from Vans but the benefit from having two instead of one seems small so I just went with the easiest option.
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  #12  
Old 05-23-2018, 09:07 AM
Bavafa Bavafa is offline
 
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Quote:
Originally Posted by control View Post
but the benefit from having two instead of one seems small so I just went with the easiest option.
You are correct on this. In my RV7, I first went with one PMAG and then the second. The difference on the first PMAG was very noticeable but with the second I could hardly tell the difference.
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  #13  
Old 05-23-2018, 12:17 PM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by control View Post
I got mine from Vans and chose one standard mag and one emag.

Downside of emag:
- Need a map sensor line
- New way of setting the timing
- Not self sustainable if RPM below around 900

Upside of emag:
- Engine runs better
- Engine starts better
- You get a free tach sensor
The RPM cut off, in the event of an electrical failure is close to 800 RPM and isn't an issue as your RPM will be higher than that I flight and will only drop below that number when rolling out in the runway and that is a great place for that to happen.
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RV-9 (Yes, it's a dragon tail)
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  #14  
Old 05-23-2018, 12:24 PM
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N941WR N941WR is offline
 
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Check out the video in this link. It will help you understand how the P-mags operate.


http://www.vansairforce.com/communit...d.php?t=157110
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
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www.repucci.com/bill/baf.html
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  #15  
Old 05-29-2018, 03:43 AM
Tom @ N269CP Tom @ N269CP is offline
 
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With one Slick and one PMag in a hybrid system, may I ask how you guys connected the tach? I want to have a speed signal from both ignitions for the RPM drop test.

My existing tach input signal range is 100-1000 vac which is well above the 12v output from PMag terminal 6. Did you have to buy a new tach, modify your existing tach, or install a signal conditioner?
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  #16  
Old 05-29-2018, 05:22 AM
control control is offline
 
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I have not flown yet but this is what the manual states:

"Note 2: Unlike a magneto, your E-MAG will generate a tack signal even when
it is disabled by the p-lead ignition switch, so you won’t loose tack when you plead
the E-MAG OFF during a preflight ignition check. "
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  #17  
Old 05-29-2018, 08:12 AM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by Tom @ N269CP View Post
With one Slick and one PMag in a hybrid system, may I ask how you guys connected the tach? I want to have a speed signal from both ignitions for the RPM drop test.

My existing tach input signal range is 100-1000 vac which is well above the 12v output from PMag terminal 6. Did you have to buy a new tach, modify your existing tach, or install a signal conditioner?
Connect your EFIS tach signal to pin 6 on the P-mag.

When the P-mag's P lead is grounded and the plugs are not firing the electronics are still alive and continue to put out a tach signal.
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RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
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www.repucci.com/bill/baf.html
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  #18  
Old 05-29-2018, 08:17 AM
paul330 paul330 is offline
 
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Quote:
Originally Posted by Carl Froehlich View Post
I have dual pMags on the RV-8A for 700 flawless hours and will soon replace the mags on the RV-10 with their new six cylinder pMags.

Carl


Good luck with that. A year before I flew, I was told that it would be ready for me to fit in time - I've now been flying 3 years and the Pmag-6 is still coming "soon".....
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  #19  
Old 05-30-2018, 02:01 PM
James Ball James Ball is offline
 
Join Date: Apr 2010
Location: San Antonio, TX
Posts: 16
Default Ignition Choices from Titan engines

I read a lot of discussion about Thunderbolt but little about Continental Motors' Titan. Titan has had years of successful experience with dual electronic ignition systems on our engines. Titan will configure the way you want and has Continental Motors ( Bendix ) magnetos which have much better quality than the alternative brand. Consider Titan, you get a lot more innovative features and benefits for the buck.
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  #20  
Old 06-01-2018, 07:41 AM
Tom @ N269CP Tom @ N269CP is offline
 
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Quote:
Originally Posted by N941WR View Post
Connect your EFIS tach signal to pin 6 on the P-mag.

When the P-mag's p-lead is grounded and the plugs are not firing the electronics are still alive and continue to put out a tach signal.
Hi Bill,

Let me clarify. I do not have an EFIS. It would be a non-issue with an EFIS. I have steam gauges and a stand alone Horizon P-1000 digital tach (http://horizoninstruments.com/) with speed input signal range 100-1000 vac....for direct connection from magneto p-leads.

It boils down to whether or not the voltage/freq characteristics of the PMag p-leads are functionally compatible with the existing tach input voltage/freq signature from magneto p-leads. This would allow PMag installation using existing p-lead wiring to the ignition switch and tach.

Seems this wheel must have been invented already by those with standalone digital tachs.

Cheers!

Tom

Last edited by Tom @ N269CP : 06-01-2018 at 07:53 AM.
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