Every motor vehicle is equipped with a clutch. A clutch is a mechanism whose operation is based on the action of sliding friction. This mechanism plays a fairly significant role in the functioning of the vehicle as a whole, since thanks to the clutch, torque is transmitted from the engine to the wheels, and gears are changed, torsional vibrations are damped, and the transmission is disconnected from the engine flywheel for a short period of time. Typically, the clutch is part of the transmission of vehicles. The transmission has the responsible mission of connecting or disconnecting the connection between the engine and the transmission. The author of the development of the first clutch in the automotive world is Karl Benz.
Why is it worth changing the electrical connections of the Alpha, Delta ignition
The need to replace individual elements of Alpha and Delta electrical wiring can be caused by various reasons. For example, your model was sold without a tachometer, but you want to install it. Or the wires responsible for connecting the ignition, starter, lighting devices and illuminating the indicators on the control panel have failed. There is also another reason why many drivers change not individual wires, but all electrical connections as a whole. This is due to the fact that even mopeds produced at domestic factories are not designed for operation in Russian climatic conditions. The cheapest plastic is used as insulation. Of course, this has a positive impact on the final cost of Alpha, Delta. However, at sub-zero temperatures, such insulation becomes brittle and begins to crumble. If you plan to use the moped in the cold season, it is better to immediately replace all electrical wiring with a better one. Moreover, this is not very difficult to do if you have certain skills, as well as a detailed diagram of connecting various wires.
The electrical connections of a moped can seem complicated and confusing unless you study the theory first. In this case, we offer for your reference the official wiring diagram for “Alpha” and “Delta” mopeds with an engine from 49.9 to 107 cubic centimeters.
Improving the filling
To tune a scooter, you also need to replace its CVT with a sports model - such devices are adjusted to the new engine characteristics much better and more accurately.
Manufacturers equip modern models of tuning CVTs with a rod lubrication system to increase the efficiency of the entire transmission part of the scooter. Smoother and easier movement of the variator along the hub will significantly improve the scooter's throttle response. You can also increase the performance of a scooter with the help of proper installation of a tuning cylinder-piston group. Installing the latter is the most radical and effective method of increasing the performance and power of a scooter.
The tuning cylinder-piston group usually comes with a cylinder head, the shape of the combustion chamber of which is optimized
If the owner also plans to install pistons with a larger diameter, it is important to ensure the ideal technical condition of the crankshaft and bearings - otherwise they will very quickly fail due to heavy loads. At this stage, tuning the scooter can be completed, since for other improvements it is easier to buy a more powerful vehicle and not bother installing expensive tuning parts
Examination
Personally, I never check timing chains. I simply throw them in the trash, no matter how awesome they seem to me. A chain is a consumable item for me, just like a spark plug, oil or oil seal. But if you are important, or money is tight, you can use the old fashioned way.
Alpha tensioner repair
alpha
Tensioner repair 149 fmb.
We stretch the chain along its length, hold it with our fingers and try to position it in a horizontal position
- If the chain describes an arc that looks very much like a 90-degree angle, then feel free to throw it in the trash.
- If the chain bends slightly and describes a small arc, then such a chain is quite suitable for further use
For clarity, I took a new and heavily worn chain, put them together and checked for horizontal deflection. As you can see: the new chain (above) described a barely noticeable arc, while the worn and useless chain sagged like snot, almost at an angle of 90 degrees.
The worn chain turned out to be almost a centimeter longer compared to the new one.
Let's get started
So, the battery is ready to charge. Connect the terminals of the charger to the battery. The red terminal is to the positive terminal of the battery, the black (or blue) terminal is to the negative terminal. Don't mix up the polarity!
Most modern chargers automatically set the charge current and charging time. But if it is possible to set the charging current, it is chosen by dividing the nominal capacity of the battery by ten. For example, with a capacity of 4 Ampere-hours, the charge current should be 0.4A. In this case, the charging time will be approximately 10 hours.
You should not charge a motorcycle battery with a car charger if it cannot charge with a current of less than 1A. High charging currents can damage the battery.
Battery care rules
The battery requires proper storage and care. Here are some requirements for proper operation of a scooter battery so that it will last a long time.
First, do not allow the battery to be discharged to more than half its capacity. In general, the battery should not be allowed to be stored in a discharged state. If you feel that the scooter starter is having difficulty cranking the engine, recharge it as quickly as possible.
The battery must be kept clean, since dirt accumulating on the terminals contributes to the rapid discharge of the battery due to current leakage. Keep contacts clean and free of oxides.
In order to prevent a short circuit at the battery terminals, which can permanently damage the battery, you need to spare no expense in purchasing fusible links, preferably factory-made ones. Homemade fuses, which often fail, can only make the situation worse.
It is unacceptable to store the battery at temperatures below -5˚ Celsius, as well as overheating the battery above +50˚. The battery can be charged with currents ten times lower than indicated in the battery capacity characteristics. There is NO need to recharge the battery. When overcharged, water begins to actively evaporate, and energy accumulation stops.
Measure the voltage at the output terminals with the engine running, it should be between 13.5-14.5 Volts. If abnormal, check the scooter's voltage regulator.
If your scooter is equipped with a serviceable battery, check the electrolyte level at least once a month. If the level drops, add distilled water. Plain water causes the battery to fail faster.
You should always remember that equipping a scooter with a radio, additional headlights, and an alarm requires the scooter owner to check the battery charge more often, since all these devices require additional electricity.
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How to adjust the clutch pedal
Adjustment of the Renault Logan clutch cable with a manual transmission is carried out identically in all modifications of this car and other similar Renault models. To do this, you need to take two basic measurements and carry out the appropriate actions. First, using a caliper, measure the distance from the rubber damper to the end of the metal tip of the cable, which is 86 ± 5 mm.
If the gap is smaller, the adjusting nut must be loosened; if it is larger, tighten it. This is done with a regular 10mm wrench. The nut has a plastic insert, so it can be tight, but this is necessary so that the clutch cable adjustment does not get lost later.
Next, squeeze the clutch 2-3 times to understand where it grabs, since as the discs and basket wear, it rises. If the pedal is located significantly higher than the brake pedal, and normally it should protrude several millimeters above it, additional adjustment will be required. In order for the pedal to move into place and the clutch to engage in the middle, you need to loosen the same nut that adjusted the gap on the Renault Logan clutch cable. In this case, you need to control the position of the clutch pedal, periodically pressing it 3-4 times. As soon as it is in the desired position just above the brake pedal, you need to start the car and try to move off.
Alpha moped engine repair
Let's take it slowly, in order:
- first remove the cylinder, then the rotor and clutch block;
- carefully remove the retaining ring (you need a screwdriver and a thin knife or blade) and the drive gear;
- To remove the speed unit, unscrew the fastener - the bolt on the back side.
- remove the gear shift fork;
- remove the crankshaft and drum.
When the repair of the Alpha moped box is completed, assemble the gearbox using the reverse algorithm.
Recently, on the repair forum, Alf found an article from the manufacturer with recommendations. The article began with the words “Repair of an Alpha moped for many begins almost immediately after purchase.” Alas, this is the bitter truth. If you are choosing between a used Alfa with a mileage of 10 thousand and a new Alfa three times more expensive, then it is better to buy a used one, since many problems will begin in the new one, in time you will not “win” even one season.
And the problem is not that the alpha moped is a bad transport, but that it is cheap, which means many of the components in it are assembled from slightly more fragile materials. This means that it needs to be closely monitored, serviced on time, and the driving style should be calm.
There are three types of simple upgrades that can be made on the first day of purchase:
- Replace the seat with a more comfortable one.
- Install a 110 or 125 cylinder instead of the standard 49 or 72.
- Replace sprockets from 14 to 16 to increase speed or, conversely, from 14 to 13 to increase traction. The standard 14 teeth are no good at all.
Increase in cylinder volume - replacement from 50 cc. at 125 cc., will add power, which is never enough. To do this, in addition to the cylinder head, you will have to change the pistons and carburetor. You can carry out such maintenance of the Alpha moped yourself. The author of this article saw with his own eyes how a man bought only a 110 cylinder and installed it right next to the store instead of the standard one. Nothing else was changed - neither the carburetor nor the head.
Did the moped go after that? Yes. How long? No. Everything jammed, right down to the connecting rod and crankshaft.
Once you have disassembled the timing belt and CPG, put the parts in separate boxes. Sketch the position of the gears and forks on paper before removal or take a high-quality photograph on your smartphone.
Do not hurry. Think more, do less. Don’t be afraid and don’t be lazy to study the hardware, watch a lot of video tutorials until the structure of the motor is completely clear to you.
Hang panniers, change headlights and mirrors. The Alpha moped is from the series that will respond to any of your concerns with reliability in thousands of your future kilometers. But remember, installing a more powerful light bulb will put a strain on the battery. Install a powerful battery and the generator may not be able to charge it.
I have seen three types of generators on alphas - two-coil, three-coil and 6-coil. At the same time, the motors were completely of the same type and cost the same. The 6-coil battery is capable of charging a full 10 Ah motorcycle battery. The two-coil battery can hardly charge even the standard 3 Ah battery.
If the Alpha moped is not able to reach the required speed, despite the roar of the engine and solid revolutions, it is impossible to stop the spinning wheel, and gear shifting occurs intermittently, then the cause of the malfunction is clutch wear.
To fix the problem you need to:
- remove the engine;
- remove the plastic cover;
- unscrew the tightening screw;
- Unscrew the adjustment mechanism and tighten the screw tightly;
- start a moped;
- turn on first gear and drive a few meters.
Another cause of moped engine malfunction may be wear on the drive sprockets. If they are very worn, they must be replaced with new ones. Their cost is simply ridiculous, do this and you may feel like your moped has found a new life!
You may encounter the problem of engine overheating. The situation can be corrected after adding oil. But if it leaks, this is a bad sign.
I don’t mean one drop a day dripping from under the engine, but actual oil leakage, indicating depressurization of the power unit.
In this case, it is necessary to drain the oil, disassemble the engine completely, find a leak (most often the problem is in the seals) and reassemble it taking into account repairs.
This is what an Alpha engine overheating looks like
It is necessary to disassemble the gearbox in order to replace used parts. As we have already mentioned, the Alpha gearbox is one of the weakest and most vulnerable parts.
Gearbox repair in progress
Motor repair is carried out as follows:
- Using a screwdriver or blade, remove the retaining ring and the transmission drive gear;
- Carefully unscrew the gear fixing bolt and remove the gear shift mechanism;
- remove the gear shift fork and shaft;
- remove the crankshaft and drum (including the core);
- After replacing the worn part with a new one, reassemble (in reverse order).
To assemble the gas distribution mechanism, pay attention to the following parts:
- You should definitely make sure that the chain vibration damper is working correctly (if you blow inside, it should let air through a little);
- When the damper contacts the tensioner, friction occurs (the rough surface of the tensioner should be polished).
To prevent the sprocket from jumping off the axle, it should be lubricated with grease. Then the cover is installed, pre-lubricated with sealant. After this procedure, install the starter star and chain guide.
Pedal adjustment process
Due to the fact that the mechanism wears out over time, the clutch pedal can become noticeably weakened, resulting in poor control of the vehicle. To fix this, it can be tightened. How to check whether tension correction is necessary?
The process of adjusting the Gazelle clutch pedal
- the pedal goes down when the car starts moving;
- when changing gears, noise, knocking is heard, and jerking of the vehicle may occur;
- Loud knocks are heard under the car when changing gears from 2 to 4.
To make sure that clutch adjustment is required, use a ruler or tape measure to measure the distance between the pedal pad and the floor. The normal figure is 15 cm, but if the measurements turn out to be less or much more, you need to tighten the cable. How to adjust the pedal?
Under the hood there is a bolt with a lock nut that regulates the tension of the clutch cable. To make the pedal have more travel space, tighten the nut, and to make the pedal travel smaller, unscrew it. We adjust until the pedal is in place. To check the result, press the pedal 3 times, and then take measurements again when it returns to its normal position. This procedure can also be entrusted to car service specialists; it will take them less time and effort.
Tuning features
Tuning an Alpha moped is a rather fertile topic. There are a lot of options for improving the qualities of the model, and the cost of tuning is much lower than for a Chinese scooter of the same price category. The simplicity of the structure makes it possible to improve both the engine itself and external elements at your discretion.
Tuning Alpha can be carried out in different directions and, before starting improvement, it is worth paying attention to those qualities that will be changed. This modification should not be confused with styling - it only changes aesthetic indicators and does not in any way affect the functional characteristics
Tuning an Alpha moped with your own hands is a very interesting task, which over time can greatly captivate the owner. The ability to refine the characteristics implies making both external and internal changes that can improve the functionality of the model. Many hobbyists purchase an Alpha moped as a future base for realizing their own ideas.
Downloads
When braking and changing gears, you should ALWAYS try to sit as far away from the tank as possible, resting your knees on the tank. The landing helps load the rear wheel, which is unloaded by braking at the front, and helps the torque limiter work. If you are sitting in the back, the likelihood that the rear wheel will start jumping when shifting down is significantly reduced.
There are a lot of myths regarding gear shifting. Simple rules:
- the faster you shift, the less you wear out the clutch;
- the higher the rpm, the faster you shift;
- you can and should slow down with gears;
- you can move from 5th to first gear (understanding why this is necessary and what will follow);
- you can and should shift at high speeds;
- Shifting gears without a clutch causes minor wear to the fork and camshaft.
Other options
In addition to the above method, you can increase the performance of a moped such as its power and speed using other tricks. For example, you can increase the power of your scooter by replacing the muffler, replacing it with a compatible resonant pipe, and tuning the transmission.
You can also choose a sports variator for your scooter and install a reinforced belt.
If you don't know how to further increase the power of your moped, try replacing the standard exhaust pipe with a sports one. With its help, you will increase the power of the scooter by up to 15%, increasing the maximum speed. Finally, replace regular brakes with disc brakes, standard brake pads with sports brake pads, and select brake hoses with reinforcement.
After all the work involved in trying to increase the speed and power of the scooter, do not forget about your safety and the safety of other road users. If you doubt the correctness of your modifications to the moped, contact the service, where they will give you practical advice or carry out a set of improvements yourself. Remember that your life may depend on the quality of work to increase the power and speed of equipment.
Polini Evo 2G
A special word for the favorite among tuning units - Polini Evo 2G. Patented dual shoe technology and an unconventional adjustment mechanism puts this device head and shoulders above the competition. The adjustment technology is simple, like everything ingenious, and at the same time ensures the highest precision of operation. The main difference from all other products on the market is that the springs here work in compression rather than tension - this significantly increases reliability (with the classic layout, springs sometimes break under tension). Plus, the new design made it possible to change the pretension of the springs by rotating the adjusting nuts - you will not find this anywhere else. Pretension is adjustable to the nearest tenth of a millimeter.
