nelson engine
#2

Joined: Nov 2007
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From: Fritch,
TX
What type of Nelson engine are you trying to buy?
Here is a link to the NMPRA sale site:
http://www.nmpraforum.com/viewforum.php?f=8
There were some 428 engines available in the listed price range (<$150).
Here is a link to the NMPRA sale site:
http://www.nmpraforum.com/viewforum.php?f=8
There were some 428 engines available in the listed price range (<$150).
#7

My Feedback: (15)
You are correct- they do look almost identical on the outside. The differences are in the inside - specifically port /sleeve timing and locations. The Q40 422 guts won't be happy unless you are spinning a smaller prop in the low to mid 23k rpms. The Q500 428 guts will want to see around 19k rpms. There are specific props for each motor.
Kurt
Kurt



