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HomeAircraftHelicopterCentury Radikal G20-30 N640 Hawk Predator › More Falcon setup questions
02-12-2006 07:43 PM  12 years agoPost 1
TeaMan

rrNovice

International Falls, MN, US

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I purchased Ray's DVD's and am going through the second one while setting my Flacon up.

I set the cyclic servo up so that both bellcranks were level, then put a slight right tilt on the swashplate as Ray suggests. I then went onto the step to set the end travel. I put the radio in full aft and right position and the swashplate in full aft and right by using a blade from a hobby knife that was about 1/2" wide and put it under the swashplate at a 45 degree angle. Problem is that both control rods are now too short to reach the balls. It doesn't matter which way I move the travel adjust on the radio, I obviously can't move the servo in both directions at the same time. Anyone see something I may be doing wrong here? I checked the lengths of my pushrods after all other adjustments. Left is 150mm, right is about 152mm. Shortening the right one would only make it worse.

TeaMan

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02-12-2006 07:54 PM  12 years agoPost 2
SteveH

rrProfessor

Texas

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Teaman,

I've been setting up Falcon's for quite a while now, but for the life of me I can't follow what you are doing with the hobby knife. However, the one thing I can understand you are doing wrong, adjust for your trim (the slight tilt to the right) with the push rods from the bellcranks to the swash. Leave the bellcranks level and the servo centered. On the initial setup, make all bellcranks level, the two aileron and the elevator bellcrank, and adjust for all trim with the two pushrods from the aileron bellcranks to the swash.

The government cannot give you anything without first taking it from someone else.

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02-12-2006 08:01 PM  12 years agoPost 3
TeaMan

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International Falls, MN, US

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I will go back and level the bellcranks and adjust the rods so the swashplate is level. According to Ray, the slight tilt in the swash plate makes up for translational force from the tail rotor. Maybe this is only for the raptor that he's using as his demo.

What I'm doing with the hobby knife is placing something under the swash plate that will hit on two edges and keep it sold at 45 degrees aft and right. There isn't much to grab onto on the bottom of the falcon swash plate, so the think hobby knife worked well. It hits the swashplate on two points and makes it easier to find the position of full right and aft.

TeaMan

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02-12-2006 08:04 PM  12 years agoPost 4
SteveH

rrProfessor

Texas

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I understand the slight tilt to the right, and agree with it...just saying you are adjusting the wrong rods to get it. Now the hobby knife thing, or anything for that matter, I don't understand why you want the swash tilted during setup. Set it at center and set the end points on the channel for cyclic throw.

The government cannot give you anything without first taking it from someone else.

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02-13-2006 05:28 AM  12 years agoPost 5
TeaMan

rrNovice

International Falls, MN, US

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I think that the tilting of the swash plate is to take it to it's most end point of travel, then setting the travel on the radio to match so when you go to the corner of the radio control it doesn't overdrive your servo's. Using the knife blade, I was able to get the swash plate in the most right and back position to coincide with the radio stick being most right and down in the corner.

Only problem is when I get it into that spot, the links are both too short to reach the balls. When Ray does it on the dvd, he just moves the endpoint trim on the radio a little and the rods fit, I would have to split the servo horn and move it in both directions at the same time.

In the DVD, Ray uses a small piece of wood to hold his swash plate in that postion with a rubber band. The Falcon swash plate must be different than the raptor, because it takes a sharper edge which is achieved with the knife blade.

TeaMan

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02-13-2006 12:25 PM  12 years agoPost 6
SteveH

rrProfessor

Texas

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I think I know what you are doing wrong...do you have a straight servo arm on the aileron (Left/Right) servo?

If so, shut off Ray's video and go to page 29 of the Falcon SE book and install a wheel with the balls offset as the instructions say.

The government cannot give you anything without first taking it from someone else.

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02-14-2006 04:51 AM  12 years agoPost 7
TeaMan

rrNovice

International Falls, MN, US

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Yes, I have straight servo arms, and have a wheel with the balls offset as they are shown in the manual. The holes were not exactly at 10mm as the manual suggested, but close.

There has to be something wrong though.... I'm just missing it...

TeaMan

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02-15-2006 08:08 AM  12 years agoPost 8
Gearhead

rrMaster

Vt

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Ed, your swash does not have to go to full deflection to get maximum cyclic pitch,,, and because your new to the hobby I suggest to just setup the system as Steve has said~ per manual, set both your Aileron's and Elevator's "Servo Travel Adjust" (Servo End Points) to 100% and leave them at that for now, your heli will fly great like that !!, once you become a better pilot you can work on your heli for more cyclic pitch,

"" The holes were not exactly at 10mm as the manual suggested, but close"" that's good for now, once you become a better pilot you can increase that

""According to Ray, the slight tilt in the swash plate makes up for translational force from the tail rotor"", yes, but I have noticed on my friend's Raptor that the Raptor is much more affected by translational force than my Falcon ever was !!

I always set my Falcon's linkages at the same length..

Jim

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