Drive Operation; A) General; B) Effect Of Manner Of Driving On Individual Components - Reely Earth Crusher Pro Bedienungsanleitung



7. Drive operation

a) General information
Enrich the mix by adjusting the main nozzle needle again, but keep the setting as lean as possible so that the model runs optimally.
Attention!
It is always extremely important not to make the mix too lean! Keep in mind that the engine lubrication of the two-stroke engine is effected via the
oil contained in the fuel. Too little oil in the air/fuel mix causes engine overheating and piston seizure because of faulty lubrication.
During operation, a light white trail of smoke coming out of the exhaust pipe should always be visible. If not, stop the engine immediately and enrich the mix.
Also make sure that sufficient air circulates around the cylinder head, in order to avoid overheating. If necessary, effect a corresponding opening in
the car body.
The optimal engine operating temperature is approx. 100 – 120°. Check the temperature with a drop of water on the cooling head: If the water evaporates
abruptly, the engine is too hot. With operating temperature, the water evaporates in 3 – 4 seconds.
Make sure that the rechargeable batteries of transmitter and receiver are fully charged.
Check the range of the remote control transmitter and the function of the RC- System.
Always try to drive the model at high revolutions! Avoid brief, strong throttle bursts when you want to drive slowly! Avoid frequent slow driving with
slipping clutch!
Always drive with attached car body. Thus, you protect yourself against burns if you touch the engine and the manifold by accident and you protect
the installed parts from flying rocks.
Bear in mind that the operation of remote controlled vehicles has to be learned gradually. Start with simple driving exercises, e.g. circular driving.
Use pylons or racing disks to delimit a course of your choice.
Get used to the driving behaviour in curves. Practice steering when the model runs towards you!

b) Effect of manner of driving on individual components

Engine
The model's FORCE combustion engine is air cooled. This means that the airstream has to take care of cooling the engine (air cooling).
This is why you should try to avoid to accelerate the vehicle with frequent, strong load changes (short throttle bursts from low rev range and jerkily lowering the
revs). The brief high revs strongly heat up the engine, without there being appropriate cooling through wind, as this would be the case at a drive with constantly
high revolutions (high speed).
As a result of overheating the engine, the piston may get stuck in the cylinder liner (piston gets stuck) and suddenly blocks the drive. This could cause
consequential damage of the entire drive section.
Drive in part-load operational range with revs that correspond to the desired speed.
However:
In the case of continuously driving slowly the wind cooling of the engine is guaranteed, but instead there may be damages on the clutch (wear,
overheating through slipping clutch).
Clutch
The clutch will not engage at idle speed. The model keeps standing still with running engine.
In case of slowly increasing the rotation speed, the clutch 'slips'. The vehicle starts and drives slowly. Just as with a 'real' car, constant slipping of the clutch can
cause the clutch lining to "smoke away" or "burn off".
The clutch first engages with high engine rotation speeds. The engine rotation speed is transmitted to the drive strand without slipping. The wear on the clutch
linings is now at its lowest.
Frequent, strong load changes by brief short throttle bursts and jerky lowering of the revs, also reduce the life of the clutch linings. With short throttle
bursts as well as by letting the clutch slip, you get a slow speed, but at the expense of the clutch.
Bearing
Overheating the engine and/or the clutch also has an effect on the bearings of the clutch bell.
Leaking and toughening of the bearing grease (running dry of bearing) as well as different expansion of the balls and the ball bearing case in the case of
excessive heat, can lead to a jamming of the balls.
If the balls can no longer move freely, there are frictional losses and therefore an additional heating up of the engine shaft.
44