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HelicopterMain Discussion › Will it work?
12-17-2003 06:36 PM  13 years agoPost 1
ChrisLaFollette

rrVeteran

Altha, FL

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I am in the process of buying a Sceadu 50 hopefully. I want a fast cyclic response and fast collective. Could i use wheels for the Servo arms and put the balls on the outside hole already in the Wheel so the response would be quick. That confused me. Ok here what im looking to do. Tell me if it will work or not. I am going to use 9202's for Cyclic and put a wheel on the servo for the arm and use the outside hole. I wil do the same for collective. So 9202 servos for cyclic and collective with wheels and ball in outsidehole all the way out so i get fast response and very tought wheels that dont flex and ima use the high torque servos to handle the load seend further out on wheel more speed but less torque. 9202's r for that reason so i have plenty of torque.

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12-17-2003 07:07 PM  13 years agoPost 2
midwestpilot

rrElite Veteran

Crystal Lake, IL

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follow the directions....

you would have to limit travel with ATV's to do that and that inturn would lessen your resolution...as well as give your servos less strength(leverage issue)...

You want to get as close to 100% travel mechanically as possible. Follow the guide lines from the directions as to how far out to put the balls on the servo...you still can use the wheels but put the balls in the correct position.

In life there is no spacebar!

Rich Erikson AMA 6175

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12-17-2003 07:12 PM  13 years agoPost 3
ChrisLaFollette

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Altha, FL

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If I do that i lose my speed. This sux. So what i do? I want fast cyclic and fast collective with torque. The 9202's arent all that fast but i assume they would work. What about throttle? How would i set it up. Can i buy a 3001 servo and use a wheel so its fast. Dont really need torque for throttle.

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12-17-2003 07:52 PM  13 years agoPost 4
Abdul

rrNovice

UK

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hi

I think i know where you're coming from

BUT changing the position of the linkage on the wheel wont give you a "faster" response at all...
it might alter the distance travelled by the linkage but its response time wont change!

Furthermore what is more important is the linkage geometry and efficiency

Get some 9252s if you want speed.

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12-17-2003 07:58 PM  13 years agoPost 5
ChrisLaFollette

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Altha, FL

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Im not talking about the servo speed being faster im talking about the control surfaces moving faster because the rods will be all the way out. I dont have the money for 9252's so what I do? I can buy 9202's right now for a good price. Should i buy them and just use the normal position with wheels. Would the 9202's be worth it for cyclic and collective.

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12-17-2003 08:04 PM  13 years agoPost 6
Daniel Santana

rrApprentice

Tampa, Fl

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Lighter paddles.....

Leave the servos at full travel and the reccomended lengths...

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12-17-2003 09:38 PM  13 years agoPost 7
Hughes500Pilot

rrKey Veteran

Anaheim, CA

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Put some ultra fast paddles on with a longer flybar. Then add some lightweight blades. Lastly, change the ratio in your mixer and max it out. You will then have a cyclic that is too fast to handle... -Steve

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12-17-2003 10:19 PM  13 years agoPost 8
ChrisLaFollette

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Altha, FL

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Im not foolin with it anymore. I might get me some different paddles but ill probably leave it how it is. Would the 9202's be a good idea with the regular setup and wheels. Just put the balls where they go and use the 9202's.

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12-18-2003 12:52 AM  13 years agoPost 9
dgebhardt

rrApprentice

Portland, OR / Boise, ID

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Do what everyone is telling you... get lighter paddles and quicker blades. There are probably options on the head for faster cyclic (there is on the Freya, so probably the Sceadu, too).

Besides, consider this:

If you want a faster roll, a faster servo will not help as much. You reach max servo position at approx 0.22 seconds (versus, say, 0.16 seconds for a quick servo). The servo stays there throughout the roll! Basically what I'm trying to say is the physical response of the heli cannot keep up with even a normal servo.

Some things would benefit more from a faster servo: tail, throttle and collective.

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12-18-2003 01:03 AM  13 years agoPost 10
ChrisLaFollette

rrVeteran

Altha, FL

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In the long run is it best to spend a hundred or more bucks on some 9202's for use on cyclic and collective? How much is it going to help by having more torque.

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12-18-2003 04:38 AM  13 years agoPost 11
novanuttz

rrApprentice

Tucson, Arizona

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Get 9252s, not much more than 9202s.
try here
rc-mushroom

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12-18-2003 05:51 AM  13 years agoPost 12
ChrisLaFollette

rrVeteran

Altha, FL

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I can get the 9202's pretty cheap. About 20 something a piece or so. And Digis drain Battery's pretty quickly.

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