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  #1  
Old 07-19-2020, 07:12 AM
airshawn58 airshawn58 is offline
 
Join Date: Jan 2020
Location: Cleveland Heights
Posts: 22
Default Hot Start with E-Mags?

I recently purchased an RV 7A. It has fueL injection, one conventional and one E-mag. The other day someone suggested I never use the tried-and-true hot-start method to start the plane; that it is harmful to the E-mag.

Thoughts?

Thanks, sle
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  #2  
Old 07-19-2020, 07:39 AM
Bavafa Bavafa is offline
 
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Location: Sacramento, CA
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Default

Did he/she offer any reason or logic to back up his suggestion?

To harm it?!?!??!?!?
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  #3  
Old 07-19-2020, 07:51 AM
D Weisgerber's Avatar
D Weisgerber D Weisgerber is offline
 
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Location: Ionia Michigan
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Default

I have an E Mag and magneto on my RV6 with fuel injection. My hot starts I always start at idle cut off and the throttle open a little. This is the same way I started it with 2 mags.
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  #4  
Old 07-19-2020, 09:59 AM
mike newall's Avatar
mike newall mike newall is offline
 
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Location: Yorkshire, England
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Default

Plus 1 on that.....

Starts perfectly, however......

If you have stopped for say 10 minutes, when you start again, there may be some stumbling and missing for a few minutes - just vapour in the lines as the Lycoming doesn't have a return loop system.
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  #5  
Old 07-19-2020, 10:11 AM
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Mark Dickens Mark Dickens is offline
 
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Location: Collierville, TN (KFYE)
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Wouldn't it be logical to expect Emagair to note that a particular hot start technique is a problem? Yet they don't. Call Emagair and ask them. I would bet that your "source" at the airport also thinks LOP is a bad idea
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  #6  
Old 07-19-2020, 10:19 AM
lr172 lr172 is offline
 
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Location: Schaumburg, IL
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Must research the source and use judgement in accepting advice like this. Many suggest that walking under a ladder will create adverse consequences.

I remember my transition training CFI adamantely suggesting that I prime my carb'ed engine by pumping the throttle. Most know that when this is done with the engine not spinning, it loads the FAB with raw fuel and creates a serious risk of engine fire if you get a backfire. While the CFI had no idea how an engine worked, he had heard this so many times that he assumed it had to be correct. How could it be wrong when every car produced before 1980 was started this way?

Larry
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Last edited by lr172 : 07-19-2020 at 10:24 AM.
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  #7  
Old 07-19-2020, 10:33 AM
RV74ME RV74ME is offline
 
Join Date: Dec 2015
Location: Auburn, AL
Posts: 205
Default My technique

FWIW...

Lyc IO-360 M1B, one slick, one Pmag.

Hot start technique.....

Boost pump....ON
Throttle.........WIDE OPEN
Mixture..........FULL RICH (2-3 SECONDS)
Mixture..........ICO
Throttle.........CLOSED
Boost pump...OFF
Throttle.........1/2 OPEN
Starter...........ENGAGE
Mixture..........SLOWLY ADVANCE AS IT BEGINS FIRING
Throttle..........REDUCE TO IDLE

This works for me every single time. YMMV
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  #8  
Old 07-19-2020, 11:31 AM
airshawn58 airshawn58 is offline
 
Join Date: Jan 2020
Location: Cleveland Heights
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Thnx Steve/All. Steve’s method sounds like the best path. The person who warned me against it had no maligned intent and is not, to the best of my knowledge, superstitious. Perhaps he is, like me, still trying to learn about non-cert aircraft’s idiosyncrasies.
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  #9  
Old 07-19-2020, 02:34 PM
flyinga flyinga is offline
 
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Location: Fredericksburg, TX
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Steve forgot to turn the mags on
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  #10  
Old 07-19-2020, 05:08 PM
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mike newall mike newall is offline
 
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Location: Yorkshire, England
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Quote:
Originally Posted by flyinga View Post
Steve forgot to turn the mags on
Bwaaaahaaaaa

Did that only last week for real - soon started when I switched them on. Super cool though, I was still cranking

Old Man Hatton noticed though - Doh !!!!!
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