Help GV-1

[torkboy]

Ok after several flights of the same thing i am lost as of what is going on. I have a GV-1 installed on my Knight 50 with a 9254 servo. Now when i click into idle up and switch the governor its fine, but when i start slamming into my negative side of the pitch the engine bogs down BAD. starts to shake and everything. but i was doing flips and nothing had ahppened. It seemed to do it only during tic tocs? the gear ratio is set right anf the GV-1 is brand new.

[z11355]

have you checked the SwCd screen?

perhaps your default V curve is too low and it's shutting off the GV1

[torkboy]

i have not checked that but my throttle curve is 70 and above

[rkeith2]

Is the GV1 set for 1850 or so headspeed?

Is it holding that speed in Idle 1 or 2 when descending fast or inverted flight?

Are you running the OS Hyper 50 and is it broken in?

[torkboy]

okaround 185o in idle up one. it bogs down in tic tocs on the toc side(neg side of pitch) and the motor has 6 flighs on it

[DavidH]

I would suggest to get the motor running correctly before engaging the GV1. I see the problem all the time where pilots have new motors and try to run them with a governor. Need to tune the motor without the governor and get it running correctly.

David

[z11355]

just to expand on what David wrote, running a gov w/ a new un-broken-in engine really wont
work well. Actually, most of the time, we see people who think the engine is tuned 'right'
discover that it's actually richer than a governor will tolerate (the Revlock is sensitive to this,
the GV1 less so). You *generally* run the engine leaner on a gov than the non-gov 'listen by ear'
method would indicate.

[SteveL]

What Pipe & Ratio
Of course get your engine set right first but 1850 is really slow for a hyper (assuming 8.7 ratio) if that is your ratio then try running it up @ 2K once you get it tuned.

[torkboy]

its like 3 or 4 clicks on the rich side. MP2 and 8.73 gear ratio. so if anything try leaning it a bit?

[rkeith2]

Torkboy -

I would say a gallon would tell you that the engine is probably going to reliably accept the idle settings as well as a good hi needle -

1850 on the Plastic Head Knight 50 is a good 3D setting...



Ron

[torkboy]

i have metal head so im gonna push it when a gallon goes through it

[SteveL]

If you want to run 1850, you should change the ratio. I find the hyper really likes to be pushed up to 17400 -17500

[rkeith2]

1850 headspeed is approx 16095 on the engine and close to it's rated 1.9 hp envelope.

Running 30% Magnum or Cool Power it seems to perform very well.

What are you running your hyper in? Are you at a different gear combo or higher head speed?

[torkboy]

Cool power 30%, nope stock ratio 8.7(kinght) and i bumped it up to 1950 :roll: