RC India

Ok finally got all the spare ;D, but did not have the right tools  :banghead:, but managed to change the broken bent parts  {:)}. Replaced the tail boom, flybar, feathering shaft and couple of push-rod linkages.

I still have to work on the heli to make it perfect.
I have verified that the pitch is zero on idel up and mid throttle.
The fly bar paddles are all parallel. Also equiv distance from the centre.
Blade tracking and verified that both blades are on the same plane.

My issue is that I need to constantly apply forward cyclic and left roll to keep the heli hover at one place.  :help:
I have used the trim to max on the forward cyclic and almost mid trim on the left rool.  :giggle:

So my question is what have I over looked or missed. I do not want to use trim and want to fine tune it for a perfect hover. Any thoughts suggestion please :salute:

Below are the video of the test hover. It was bit windy in the morning.

http://www.youtube.com/watch?v=AnodCQZDHrU

http://www.youtube.com/watch?v=opGB9vswbrA

Heheheh just forgot to mention it was at the very same place that I initially crashed my heli head frist while learnign to hover :giggle: ;)

You forgot CG (center of Gravity ) make sure that the Heli is well balanced, put some weight on the nose to make it parallel to the Ground while holding the heli through fly bar's + . let me know if you need a full explanation

Hellyflyer

Clearly indicates that your swash is not level.  You can use the standard techniques to fix it, like rotating the servo arm on the servo, adjusting the linkage length, adding sub-trim in the radio etc. Start with no trim and no sub-trim on the swash servos.

hmmm CG will check it out... swash level... I just did eyeballing to ensure it was paraller to the ground. But will double check on that again when I find time to fly over weekend. I am suspecting that I might be missing on having the flybar paddel parallel. Are there tools to ensure that fly bar paddles are parallel to each other and to the centre hub. I just used a ruller on top to measure that they are parallel.

Thanks again for the quick reply Hellyflyer and anwar. No wonder I love this forum... You are just a click away from all the help you need.

Great to see another person join Helis. Now we are 5 newbies at nearly the same level of flying !!

Sorry, missed out this thread. Good to know your Heli is back to hovering. :thumbsup: Its a bit dangerous though to hover in such a small place. >:D

You can get flybar paddle gauges (like pitch gauges) that come in pairs.  Visual inspection works very well though, as long as you can line it up with with the "fly bar cage" (the rectangular structure through which the flybar passes through).

BTW, for the above issue, the fly bad paddle would be less of a suspect than the swash levelling itself.

hi mate,
 dont buy paddle tool. not needed........but...................... you say you 'eyeballed'the swash level............ there is your mistake I expect.... get the swash level tool, 0.5mm out is enough to stop a good hover..........
never eyball the swash, always set it with tool. this is the start point of 'all' your setup............everything else depends on a well set swash plate.
 oh and not bad there, I learnt buy staying 'low' and smallish area [be safe though] it is harder as there is more turbulance at lower level .:-)
regards
don

Thanks Don... yep have ordered one...

There are other simple techniques to ensure the swash is level.  One simple suggestion (assuming you have a pitch guage) is to ensure that the pitch on one of the main blades is constant when you check it at 90degree intervals of rotation (Rajesh suggested this).

There are various other techniques using bubble-levels also.

have a pitch guage...and couple of bubble levels pulled out from old tapes and measures... I finally got all the plliers and hex drivers, will check on the 90 o suggestion... I again pulled the head assemble out to verify if there was any bend on the main shaft ... so sure will check on when I putting it back together....

what is sk010962?

good question vinay ;D ..... it just happens to be my employee id :giggle: in the company that I work for.  I am really bad at remembering different userid on different forum and sites... so anything that does not take email id as login... I have a common login user id: sk010962. 2 advantages... one I am always sure that no one else will have the login id  :thumbsup: and second I cannot forget the id as I have been using it to login every single day for the past 5 and a half years  ;)