Specifications

Jesus Bolt

The bolt which holds the rotor head onto the main rotor shaft.

The no-load RPM per volt of the motor. For example, if a motor is rated at Kv = 3000 and

is being run on a 10 cell (12 volt) battery, then the motor will spin at 36,000 rpm. The head-

speed can then be calculated by calculating the gear reduction ratio of the pinion/main

gear combination. This is very important because a helicopter only flies well in a certain

range of headspeed.

Lead/Lag bolt

The bolt which allows the main rotor blades to swing horizontally so it can either lead

(swing ahead) or lag (swing behind) the main rotor head.

LHS

Local Hobby Shop

Loctite

A threadlocking adhesive used to ensure screws do not unscrew themselves. Technically,

it is an anaerobic adhesive.

Loctite 242 (blue) is removable and used for screws which may require removal later to re-

pair crash damage.

Loctite 262 (red) is permanent and used for screws which will never require removal. If you

wish to disassemble parts which have been loctited, then you should weaken the adhesive

first by heating the metal parts to about 212F/100C. This can be easily done by touching

the metal parts with a hot soldering iron or a hair dryer.

LVC

The low-voltage cutoff point of the ESC, if it has one. For a heli, you want an ESC with no

or very low LVC

When the battery voltage drops down to the low-voltage cutoff point, the ESC will either

stop or throttle down the main motor, which is undesirable for a helicopter. For a heli, you

want an ESC with no or very low LVC.

mCCPM