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Old 02-22-2021, 07:34 PM
TnMike's Avatar
TnMike TnMike is offline
Join Date: Nov 2009
Location: Lewisburg,Tn
Posts: 305
Default Question from a friend

When doing a mag check (C-172, O-320) what causes an rpm increase. Yes, increase not decrease.
Thanks for the answers, Mike
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Old 02-22-2021, 07:48 PM
sailvi767 sailvi767 is offline
Join Date: Sep 2010
Location: Charlotte NC
Posts: 1,267

Badly miss timed mag!
RV-6 sold
F-1 Rocket
Old 02-22-2021, 07:53 PM
Slice Slice is offline
Join Date: Aug 2016
Location: Tacoma, WA
Posts: 68

Originally Posted by sailvi767 View Post
Badly miss timed mag!
Old 02-22-2021, 07:55 PM
Shrike Shrike is offline
Join Date: Aug 2019
Location: Grand Rapids MI
Posts: 1

That is where I would start.
Old 02-22-2021, 08:17 PM
vikbee vikbee is offline
Join Date: Dec 2019
Location: Los Angeles, CA
Posts: 58

I'd guess one of the mags is timed way ahead of the optimal time. Once it is fired first, the second one does not add much, but once the it is turned off, the second one fires at optimal angle, thus RPM increase.

Just a guess.
Old 02-22-2021, 08:33 PM
Freemasm Freemasm is offline
Join Date: Nov 2017
Location: Orlando
Posts: 287

Guessing Slicks accidentally timed to the retard point.
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