MegaTech R/C Real World Helicopter Series Bedienungsanleitung PDF herunterladen (Seite 5)

percent of MAC aft of the upper-wing

leading edge? Thank you for your help.

Great article!

BILL TRUEBLOOD

Edgewater, MD

Bill; thank you for your feedback. It is true that

the bigger wing will generate a larger portion of

the lift than the smaller wing, even with the

slight difference in incidence. In practice, the

model will behave normally. Use the horizontal

distance from the top wing leading edge to the

bottom wing trailing edge as the MAC line, then

use the 25 percent point location for the balance

point. This will be a safe place to start. Also,

check where the plan designer indicated the CG.

I always start there and adjust accordingly after

I've test-flown the model. Depending on the

model's behavior, you may still have to slightly

adjust its balance point one way or the other.

When you finish your model, send us a picture

for "PilotProjects." GY

GYRO GYRATIONS

I just finished reading Rick Bell's article

about gyros. It was very helpful, as I have

always been curious about them and how

they work. I hope you can answer a ques-

tion. In the section, "Uses for gyros," it

states that using a gyro on the elevator and

the rudder can help a modeler learn to

torque roll. If I want to connect a gyro to a

particular axis for the rudder

and another axis for the

elevator, does that mean

I need two gyros?

JEFF COOMBES,

Austin, TX

Jeff; I'm glad that you found the information in

the gyro article useful. I had a lot of fun

researching the article and learned a lot about

gyros along the way. To answer your question: at

the present time, gyros control only one axis at a

time; so, yes, you'll need to use a separate gyro

on each control surface (elevator and rudder).

You can hook up both (with a Y-harness) to a

single auxiliary channel, so you'll be able to timi

them off when you're not using them.

Otherwise, the gyros will be active all the time,

and that will affect your control inputs. Be sure

to thoroughly test the gyro inputs and the gain

featiire before flying. RB

Head Lock (tm) Remote

spring loaded locking Glow

Plug Connector fits under Plane

cowls and Helicopter canopies,

letting you cover the glow plug

and head. #M021 Single

shown.

Remote Jack

allows you to

power your plug(s)

from anywhere on

the model, away

from

the

prop

Extended version

For deep heat sink

heads on cars, heli-

copters and boats. (#M056)

Head Lock.

Head Lock Remote.

The Original Locking

GlowPlug Connectors.

Or for direct power: Head Lock

(tin) fits all standard glow plugs,

is powered by 1.2V to 1.5V bat-

tery or Power Panel. (#M009

Shown)

Want to cover your engine? Or keep your hands away from the prop? Use a Head Lock

Remote. They look great, they work great and they're backed by Sullivan quality.

Head Lock Remotes are available in single (M021), Extended (M056) and twin (M022)

configurations. They have a low profile locking head and a

remote jack that can be hidden away from the engine. Head

Locks feature 18 gauge power cords and are available in

Standard (M009) and Professional (stainless steel, M037).

PRODUCTS

Sullivan. 50 years of setting the standard. Made in the USA.

One North Haven Street. Baltimore.

Maryland 21224 USA.

www.sullivanproducts.com

GETTING BETTER IDEAS OFF THE GROUND

COOL IT!

A brief note to express my gratitude for the

very informative article entitled "Cool It"

that appeared in your April 2002 issue.

Thanks to it, many of my longstanding

questions about model engine fuels and

engines were answered—a classic example

of the instructive and understandable

content you provide. Not all of us are

engineers, but we are people who thor-

oughly enjoy model airplanes.

ED GILLANDERS

Poulsbo, WA

Thanks for your kind words regarding the

engine-cooling article. It's always a pleasure

to hear from readers who benefited from our

efforts! DAVE GIERKE

JUNE 2002 1 1

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