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HelicopterAerobatic FAI F3C F3N Contest › 701 Governor with Jeti/Hacker Masterspin 125
08-05-2011 11:29 AM  6 years agoPost 1
Hati

rrNovice

Perth, Australia

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I am just about ready to pull my hair out

I have the above mentioned combination on my Freya, all set up for F3C work, powered by 12S 5000 battery pack, running a Kontronik 700-45.

Given how well some of you run the 701 in gov mode with speed controllers, I had high hopes that my particular combination will be a winner too. As far as I know the only pro running this is one of the Japanese pilots, but I recall someone else mentioning having this combo, but can't recall who.

Anyway, I got IU1 at 1480 for hovering and IU2 at 1980 for aero. All good in IU1, but in IU2 I had a number of surges (rpm spike if you like).

The 701 is set up correctly (at least I think it is), it governs fine to the set rpms in both modes.

The ESC is in logarithmic curve mode (according to Jeti that is for around 50% throttle usage across the flight) but running the heli on the bench still results in a surge a minute or two into IU2 mode. It repeats again after a few minutes. It sounds like the CC governor overspeed. Of course on the bench runs unloaded so it can't be a compensation issue like in the case of CC.

I am at the point of ditching the governor of the 701 in favour of the ESC's governor if I can't cure this issue, so I welcome any comments/ideas from the experts.

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08-05-2011 12:26 PM  6 years agoPost 2
Heliguychris

rrKey Veteran

Perth, West Australia

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Hey Hati, the Gov in the hacker is pretty good, are you not happy with it ?
Cheers mate.

Licensed (CASA) UAV operator certificate holder 1-YFOF5-01 www.helicamaerial.com.au

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08-05-2011 09:12 PM  6 years agoPost 3
Hati

rrNovice

Perth, Australia

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I never tried it Chris, to tell the truth, as everyone was raving how good the 701 governor is, so when I was kitting the Freya out, I bought the complete 701 package. Problem is that at the time Dr. Ben and co were using a CC 80 HV IIRC. They worked out all the settings but due to bad experiences with CC I did not want to risk a $4k+ machine by going down the CC route.

Like I said I will ditch the governor on the 701 if nobody here has any clue as to what causes the surges, I just want to give this one more chance to earn its keep

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HelicopterAerobatic FAI F3C F3N Contest › 701 Governor with Jeti/Hacker Masterspin 125
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