RCScrapyard ► Slipper Clutch and Hydra-Drive Explained • for RC Beginners.
RC Model Airplanes RCScrapyard: New, used, second hand radio controlled models, parts and spares.
Established 1999
Tamiya Monster Buggy
Search Site Search
Radio Controlled Models    Flags    From Around The WORLD

Slipper Clutch and Hydra-Drive Explained

For Radio Controlled Beginners.
USAUS UKUK AUSAU CANCA ESES IEIE DEDE FRFR ITIT NLNL ATAT CHCH



Slipper Clutch
Slipper Clutch


Slipper Clutch Assembly
Slipper Clutch Assembly


Losi Hydra-Drive
Losi Hydra-Drive


Hydra-Drive Assembly
Hydra-Drive Assembly
What is a Slipper Clutch


   More often installed on off road RC Models, the Slipper Clutch has been around since the late 1990s. Basically the idea is to prevent wheel spin and increase traction under acceleration, to improve the cars stability from a standing start, when landing from jumps or on corner exits. It also protects the spur gear and drivetrain, to some degree, when using a high torque motor.

   The design is quite simple, employing two independent metal plates, one generally fixed to the spur gear and the other to the drive mechanism, clamping onto a fibre or rubber ring or pad. Adjustment is commonly achieved by slackening or tightening a spring loaded nut on the end of the spur gear mount.

   Setting up the slipper clutch can take some time and is a matter of individual preference, but normally the way to do this is from a standing start, jamming on the throttle and simply getting the feel of the car for that particular surface, being grass, gravel or dust. Personally I adjust it to give me around a metre and a half slip, before it achieves full drive. Wear on the slipper clutch is natural, and often has to be readjusted after each race.

The Hydra-Drive


   The Hydra-Drive, or Fluid Coupling, was originally designed in the 1950s, but only came to RC a couple of years after the introduction of the slipper clutch. In principle, the Hydra-Drive is supposed to give similar results to the slipper clutch but need less continuous adjustment. In practice, for me anyway, it was not easy to live with.

   Hydra-Drives employ two independent impellers, immersed in silicone oil and enclosed in a sealed housing. Again, like the slipper clutch, one impeller is fixed to the spur gear, the other the drive. As power is applied, the spur gear will spin its impeller, until through the oil, drive is picked up by the drive impellor. The only real way to adjust the drive was to change the oil viscosity, or in some, the gap between the impellers could be adjusted by shims. All this took time and as far as I am aware, the Hydra-Drive is no longer used in RC.

For More Setup Information check out my Hints and Tips page.













^ TOP ^




♥ Add This Page to your Favorites (Ctrl+D) ♥






★ Radio Controlled Model Accessories: ★
Gas/Nitro Engines
Nitro Engines
Bearings and Bearing Sets
Bearings
Body Shells
Body Shells
Radio Transmitters etc
Radio Equipment
Tires - Touring, Buggy, Truck, Monster Truck, Rock Crawler
Tires
Wheels/Rims - Touring, Buggy, Truck, Monster Truck, Rock Crawler
Wheels
Electronic Speed Controllers
ESC
Battery Packs
Bats + Chargers
Electric Motors
Electric Motors









On/Off Road
RC Models:

Other RC Models:

Radio Equipment:

Accessories:
Buggys

Formula One

Monster Trucks

Rock Crawlers

Touring/WRC/Drift Cars

Trucks/Truggys



Airplanes

Boats/Ships

Helicopters

Motorcycles

Submarines

Tanks



Crystal Sets

Receivers

Servos

Transmitters



Batteries

Battery Chargers

Bearings

Body Shells

Dampers (Shocks)

Electric Motors



ESC

Nitro Engines

Pinion Gears

Spur Gears

Tires

Wheels