ORIGINAL: proptop
Hey...can you put the Q500 air valve on the Q40 engine so it wouldn't have to be WFO or nuthin'?
Or isn't that how the Q500 air valve works? Doesn't it act like (or kind of like) a throttle?
I'm not talking about trying to make a Q40 Nelson idle...just knock the R.P.M. down to say 6-8,000 perhaps if you wanted / needed to throttle back a bit.
Dub actually sells some of the "practice" QM40 and FAI engines with a fully functional carb. Its not going to idle at 2000 rpm (more like 5000), but it gives pretty good throttle control
A few years back, a bunch of us actually prefered using the airvalve on the QM40 engines - gave that 'enriching' capability on the start line, and also allow for flood-off at the end of the flight. RPM drop is negligable with respect to sport/speed use... maybe 1000 total (since it is a smaller bore than the QM40 venturi).
Bob