View Full Version : Hawk Pro set up question
COOKIEULT70
08-30-2006, 12:44 AM
Ok I'm trying to set it up to have 0* pitch at center stick so I can transition to idle 1 on the ground smoothly. But when I set all the linkage to the recommended lengths and have the pitch and elevator servo arms and control rods square I end up with 4* positive at center stick. Is there a way to tune it for 0* center stick?
SteveH
08-30-2006, 07:43 AM
The "recommended" rod lengths are just to get you in the ball park. First, set the collective servo at center stick and the output wheel so the rod forms a 90 degree angle with the screw in the center of the wheel. Then set the rod length so the collective mechanism is in the center of the possible travel in the frame. Then set the swash to mixer arm rod lengths so the blades are at 0 degrees pitch.
You may have to adjust the lengths of the short rods from the mixers to the flybar seesaw to get the mixers level, but do it if you need to, to get the mixers level when at 0 degrees.
WayneBrown
08-30-2006, 09:21 AM
get a level swashplate, and adjust the rod lengths above to get zero @ midstick..
COOKIEULT70
08-30-2006, 10:39 AM
Cool. Thanks guys. I'm going to finish the setup and start it up for the first time today.
COOKIEULT70
08-30-2006, 10:12 PM
Ok, something is wrong. My pitch gage is showing that I'm getting +10* pitch at full throttle. The motor sounds like its reving up just fine. Problem is it wont get off the ground. I guess its possible I'm not getting accurate pitch readings. I'm using my E Flite pitch gauge from my Blade CP Pro. So I think I need a better full size pitch gauge. Who makes a good one? Also do I need a flybar lock?
COOKIEULT70
09-01-2006, 01:57 AM
I kinda need some input here. Anybody? Could my swashplate be sticking when under load? Now allowing it to move up the way it should?
WayneBrown
09-01-2006, 07:36 AM
just level the flybar after you give full stick, and check your pitch.
HeliMax makes a good pitch gauge.
What servos are you using?
COOKIEULT70
09-01-2006, 09:31 AM
Futaba S3152 for the swash and throttle with a S9254 on the rudder.
I'm going to buy a pitch gauge for the Hawk today. I'll look for the Helimax one.
Thanks.
Eric.
WayneBrown
09-01-2006, 12:10 PM
3152's are borderline..but should not bind anything.
Setup as follows:
Midstick, use an idleup mode. Achieve zero pitch at 50% of curve. Level swashplate via adjusting links and rods fore/aft and right left. At the same time, look at the mixing arms on the slider immediately above the swashplate. Level the arms by adjusting below the swashplate.
*Note there are two fixed length connections that connect to the swashplate, no adjustments above the swashplate will affect them being level.*
Confirm:
Level swashplate, mixing arms level, Midstick.
Now you can use your pitch gauge to adjust pitch. Using the Long rods above the swash, get as close to zero pitch as possible, you can fine adjust for tracking with the short rods later.
This should be considered 'Normal" setup for any brand of chopper on the market.
Switch back to normal mode on Transmitter and adjust your pitch curves to suit your style.
WayneBrown
09-01-2006, 12:10 PM
3152's are borderline..but should not bind anything.
Setup as follows:
Midstick, use an idleup mode. Achieve zero pitch at 50% of curve. Level swashplate via adjusting links and rods fore/aft and right left. At the same time, look at the mixing arms on the slider immediately above the swashplate. Level the arms by adjusting below the swashplate.
*Note there are two fixed length connections that connect to the swashplate, no adjustments above the swashplate will affect them being level.*
Confirm:
Level swashplate, mixing arms level, Midstick.
Now you can use your pitch gauge to adjust pitch. Using the Long rods above the swash, get as close to zero pitch as possible, you can fine adjust for tracking with the short rods later.
This should be considered 'Normal" setup for any brand of chopper on the market.
Switch back to normal mode on Transmitter and adjust your pitch curves to suit your style.
COOKIEULT70
09-01-2006, 01:53 PM
Ok. Fixed the problem. Thanks for your help everyone. As it turns out though the problem was completely unrelated to pitch. It was WAY to lean. I was trying to hover it this morning and the motor started losing power. I knew something was up. Then the motor died. When I brought it back to the bench I touched the head briefly. WOW it was hot. I let it cool down and turned the needle out 3/4 of a revolution. WAY more power now. Lifts just fine.