TJ Pro setup with FF9

[Dedcalm]

After scaring myself stupid the other day I need some advice...

Have not flown the Rappy 50 for a while (3 months or so!) and was hovering about getting the feel for it again - all ok so far...

Decided a little more head speed would be a good idea so engaged the govenor and the head speed increased to a scary rate (at least for me). Heli was still rock solid in the hover although as expected the collective became far more powerfull. Trying to concentrate on not stuffing the heli os soiling myself while also trying to switch the governor off was not fun!

So my predicament is this, I have a spread sheet (from the Model Avionics web page) that shows you the FF9 (9CHP) settings and the appropriate head speed. I have the gear ration set to 8.5:1 which is correct. Does the "Governor" setting in the FF9 use the Futaba ATV or EPA adjustment range ? My guess is ATV which would mean that instead of 1726RPM I had 2267!

If not then I will work my way up from 50% (disabled) using my rpm meter but this always seems kind of dodgy to me...

Rob

[Dedcalm]

Seems that my thoughts are correct, I flew yesterday with the govenor settings using the ATV values on my TJ Pro spread sheet (55 and 57) which gave a much more sensible head speed. Not had the chance to check the actual value yet but certainly much more sensible head speed of about 1700.

Unfortunately in a moments stupidity 8O I started the Rappy with Idle up switch on! :roll: Doh! think I need a new clutch now the OS Hyper certainly packs some punch! fingers crossed it did not injest any of the clutch lining :?

So its a trip to Skyline this week... need some more Magnum anyway

[Dedcalm]

Confirmed my clutch is toast stripped down the heli last night and removed the clutch bell and cleaned the remains of the clutch from the canopy/frames/manifold and cyliner head of my OS Hyper. Luckily I think the hyper escaped injesting the dust! It still has good compression and the carb is clean.

Have removed the remnants of the clutch liner from the bell so hope to have it flying again by the weekend... off to Skyline tomorrow to see if they have a spare liner &/or bell assembly.

Rob

[bibs]

Blimey, sounds like you've had an interesting couple of days! Good luck with getting back in the air

[Quattro]

been there

OS Hyper certainly packs some punch! fingers crossed it did not injest any of the clutch lining

lucky youve got fingers left to cross

[Dedcalm]

It held its RPM rather too well! Certainly loads of power in the beast. I was also running Magnum 20% for the 1st time... 12% had run out.

If I had let go it would have been a whole lot nastier!

Guess I should think about moving the gyro and idle up to different switches as they are currently configured on the same one... have to switch on the Rx with Idle up 1 to sort out the 401 gyro else it does not initialise correctly...

Rob

must check idle up, must check idle up, must check idle up...

[chappers]

hands up those that havent done similar! ..................... thought so not many?

real bad idea having gyro and idle up on same switch!?

[Dedcalm]

In hindsight I would agree, just hate trying to remember lots of switches. With 2 helis and 15+ planes it gets kind of trickey

Will move the Idle up switch to another switch this morning, sounds like the safest idea...

Rob

[Dedcalm]

Please to say that my trip to Skyline was successfull I have picked up a new clutch liner and a new clutch as well as a couple of bottles of Magnum 12%.

My old clutch had certainly not taken the heat well as it had lost its springyness. I could easily bend the arms abck into line (as they had splayed out). Not worth the risk IMHO so I replaced it.

Rob