My Srimok 90E

[5exi]

But surely you'd need unequal amounts of pitch on each side anyway due to the torque of the main rotor?

Most don't fly with pre-comp pitch set on there tail they only use heading hold

You try it then unequal pitch , equal pitch , rate mode set , pitch slider centred in HH and come back with a review of your findings

[J-S-Q]

Most don't fly with pre-comp pitch set on there tail they only use heading hold

You try it then unequal pitch , equal pitch , rate mode set , pitch slider centred in HH and come back with a review of your findings

I don't understand what you're telling me to try.

Perhaps I misunderstood your original post when you said "ideally you should limit your tail pitch limits to be equal both on both sides as you'll end up with different pirouette speeds if you don't." Sounded like you were suggesting equal blade pitch (let's say +/-6 degrees for example) on each side and I don't understand why someone would suggest that because there are differing pitch requirements for a given piro rate in each direction due to the torque from the main rotor.

[Mercuriell]

I don't understand what you're telling me to try.

Perhaps I misunderstood your original post when you said "ideally you should limit your tail pitch limits to be equal both on both sides as you'll end up with different pirouette speeds if you don't." Sounded like you were suggesting equal blade pitch (let's say +/-6 degrees for example) on each side and I don't understand why someone would suggest that because there are differing pitch requirements for a given piro rate in each direction due to the torque from the main rotor.

Youré quite right - HH gyros have made us lazy and will adjust the piro rate to be equal both sides - as most tails are overpowered mechanically the potential difference in mechanical authority due to overcoming main rotor torque isn't significant and ease of set up makes most of us set up centre stick centre throw and then set equal range of movement on the gyro.

[marcosp]

I respectfully disagree. Using same throw on both sides will definitely give you uneven pyro rates. Most helis if set with the same throw for clockwise as anti-clockwise will not cope with torque on some maneuvers. This is true at least when the extreme limits before binding are designed to be used to the full limit and not a mm less. Most helis must use these mechanical limits which are, of course, not even to each side, and make our life simple by just setting the limits to avoid binding and the gyro uses that throw whenever needed. Kasama gave us an obscene amount of throw for clockwise turns. My question was to find out if you guys were setting the gyro limit to this full throw or setting something a tad lower and not using the full mechanical throw. At simple sight, the full limit gives something like 70 or 80 degrees, which puts the blades in full stall for sure. Even though the gyro might not use this throw if it achieves the asked pyro rate before reaching it, I am not comfortable with it being at its disposal.
Mind you I am not going into setting 90º servo horn to cero or 8º tail pitch for a Rate mode hands free hover. That's an entirely different matter.

[Mercuriell]

I understand your reasoning but I think it applies to smaller helis with shorter booms and less tail authority - my buddies and I have all set up our tails with centred slider and equal range of movement on the gyro and had no problems - good discussion !

[5exi]

I understand your reasoning but I think it applies to smaller helis with shorter booms and less tail authority - my buddies and I have all set up our tails with centred slider and equal range of movement on the gyro and had no problems - good discussion !

It is a good discussion maybe we need to have a new thread started on the topic.

I for one am with John's Quote

[marcosp]

Ok, I just checked my FAIFA tail and I get what you are saying. On The FAIFA centered slider means around 8 degrees pitch, as in any good heli. So yes, with same throw to each side the gyro is going to work ok. Maybe I wasn't clear and misunderstood you as well. By even throw I meant center was cero pitch and same degrees to each side. As you put it you have a full anti-clockwise of say 45 deg. and a clockwise of 65 deg. Which is perfect. I was concerned with the 65 deg. being too much but I'll trust your experience. Thanks again.

[Mercuriell]

For stick bangers piro rate can always be tuned up using end points on rudder whilst those who really fly the heli will do that automatically

[Jamin_00]

Finally got to try it out today.

I moved the ball in one hole, think it's about 14.5mm and swapped the tails to 95's

Much better, how it should be. As good now as any gyro I had used that i can tell any way.

No I have the perfect heli and I even tried a new move with it today and did ok, few scary moments but come home in one piece

Great morning flying

[5exi]

Oh so you do listen

Glad your happy with it now , you could redrill you arm to 15.5 mm this is what I run plus I think I turned my gain down also.

It made mine feel much more locked in and took a step like feel away, if know what I mean

[Jamin_00]

Yes I do and er, no I don't

It was at 16.5mm I think before so I could prob find another horn with 15.5mm as I got plenty but I managed to up my gain by 13 points and it seems spot on so I will just leave it as it's working.

Can't wait to get out this Sunday for a decent days flying

[Jamin_00]

Went back to 105 tails today as the gain was fine but it blew out on me mid way through a move so the only other thing I could think off was to put the 105's back on.

Did not want to try the move again as it was a bit of a confidence shaker but did and all was good so all I needed to do was move the ball in on the servo.


Also finally tried the edge FBL 693's blades that i got here. Much more poppy and responsive than the 710 radix FBL blades. Made it too fast for me trying tic tocs as the difference is quite considerable. They track just as nice and it fly very stable still but as soon as you any harder move it responds so much quicker.

Nice blades and blades I will use every so often but for the most of the time I will stick with the 710 radix.

Updated pics

[Jamin_00]

Its got a new dress on today

[Dave Rand]

Yeah man that's cool

[5exi]

Can i Have one