Heli-Specific Basic Menu Functions - FUTABA 7C-2.4GHZ Instruction Manual

HELI-SPECIFIC BASIC MENU FUNCTIONS

MODEL TYPE: This function of the PARAMETER submenu is used to select the type of model programming to be used.
Before doing anything else to set up your model, first you must decide which MODEL TYPE best fits your aircraft. If
your transmitter is a 7CA, the default is ACRO. If it is a 7CH, the default is HELI(H-1).
HELICOPTER SWASHPLATE TYPES:
The 7C radios support 6 basic swashplate setups, including "single servo" (H- 1 - most helicopters use this type) and 5
types of CCPM (cyclic and collective pitch mixing). A "single servo" swashplate uses one servo for each axis: aileron,
elevator (cyclic pitch), and collective pitch. CCPM helicopters utilize a combination of servos working together to achieve
the 3 axes of motion. There are 5 basic CCPM types, displayed below. CCPM has several advantages, the most obvious
of which is far less mechanical complexity to properly move the swashplate of the helicopter. Additionally, several servos
working in unison (ex: HR3, all 3 servos together create elevator movement) dramatically increases the torque available as
well as the precision and centering.
Please note that some helicopters are type HR3 or HN3, except off by 180 degrees. For example, the Kyosho
HR3 but with the 2 parallel servos to the rear of the helicopter, not front. If your model's swashplate is off by 180 degrees,
you will still use that swashplate type, but also use SWASH AFR (p.63) to adjust the functions as needed until it operates
properly. Additionally, different angles of CCPM may also be created utilizing the fully assignable programmable mixes.
(See our Frequently Asked Questions area at www.futaba-rc.com\faq\faq-7c.html for specific examples.)
Not operating quite like you expected? In many CCPM installations you need to either reverse the direction of a specific
function (SWASH AFR) or reverse a single servo's direction (REVERSE). See SWASH AFR for details.(p.63)
Swashplate Type Setting Procedure
HELI H-1 Type: Independent aileron, pitch and elevator servos linked to the swashplate.
Most kits are H-1 type.
HELI H-2 Type: Pushrods positioned as shown. Elevator operates with a mechanical
linkage. With Aileron input, the aileron and pitch servos tilt the swashplate left and
right; with Pitch input, the aileron and pitch servos raise the swashplate up and down.
HELI HE3 Type: Pushrods positioned as shown. With Aileron input, the aileron and
pitch servos tilt the swashplate left and right; with Elevator input, the servos tilt the
swashplate fore and aft; with Pitch input, all three servos raise the swashplate up and down.
HELI HR3 Type: Pushrods positioned as shown. With Aileron input, the aileron and
pitch servos tilt the swashplate left and right; with Elevator input, the three servos tilt
the swashplate fore and aft; with Pitch input, all three servos raise the swashplate up
and down.
HELI H-3 Type: Pushrods positioned as shown. Fundamentally, the servo operations
of H-3 type are almost that same as HR3 type.
However, the servo arrangement for elevator operation differs.
HELI HN3 Type: Pushrods positioned as shown. With Aileron input, the three servos
tilt the swashplate left and right; with Elevator input, the elevator and pitch servos tilt
the swashplate fore and aft; with Pitch input, all three servos raise the swashplate up
and down.
61
® Caliber is
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Front
Pitch Aileron
Elevator
Front
Aileron Pitch
(Pitch) (Aileron)
Front
Pitch
Aileron
12 0
(Aileron)
(Pitch)
120 12 0
Elevator
Pitch
Aileron
(Aileron)
(Pitch)
Front
1:1
Elevator
Elevator
Front
12 0
Aileron
120
120
Pitch