How to make reverse speed on a power tiller
Stroke limiter is an integral element of a modern power tiller. Its function is to change the number of revolutions of the output shaft, resulting in an increase or decrease in engine torque of the agricultural machine.
Standard single-axle tractor straddle ratios
Stair-stoppers for power tillers are of different design and operating principles. Accordingly, each of these devices has different characteristics, advantages and disadvantages.
According to these factors, the power tiller reducers found on the market are divided into several types:
- gear-wheel wrenches. such devices have the most reliable design. Metal, of which gears are made, is treated with special protective substances, which noticeably increases endurance and prolongs service life of gear reducers. Among the disadvantages of this kind of mechanisms is their high cost;
- Worm travel reducers. such devices are equipped with motor blocks with engines equipped with vertical shafts. The worm travel reducer for power tillers is designed mainly for plowing previously cultivated soil. The use of worm travel reducer on the tilled field leads to its inevitable breakdown;
- chain-driven devices of this type have a long service life and low cost. The housing can be either demountable or non-dismountable. The first option is much preferable, because if the unit with a collapsible body breaks, it is easy enough to repair it with your own hands;
- pinion-chained travel reducers. devices of this type are considered the most optimal option for equipping power tillers. They are not expensive, have a long service life, and can bear high loads well.
Each single axle tractor undercarriage has a different performance in various operating conditions. When selecting a machine for your power tiller it is important to remember.
How to make a travel reducer for a power tiller with your own hands?
The high cost of some devices encourages farmers to produce rod-shrinkers on their own hands. It is not as easy as it may seem at first sight. However, if you try hard, you can make a quality mechanism that will help to reduce the speed of your motoblock.
Immediately before making a walker, you need to decide what type of mechanism you will be making. It is also important to choose the transmission ratio that will determine the torque and speed of the output shaft. In addition to all of these, it is necessary to determine the mass and dimensions of the future power takeoff.
Be sure to study the drawings, which will tell you the correct order of action when assembling the device.
When making it yourself, it is better to give preference to the chain-type shrinker of the power tiller. It is characterized by high reliability, and the parts to it can be found almost everywhere.
To assemble a travel reducer for a power tiller, it is necessary to purchase the following elements in advance:
- drive shaft and slave shaft;
- a set of sprockets with the right gear ratio for the job;
- Bearings, the size of which is calculated for the diameter of the shafts and axles;
- chains, through which the torque will be transmitted;
- Angle-type profile. you need it to make the frame and fix the whole mechanism;
- The body. you can buy ready-made or make it on your own;
- Sheet steel, 5 mm thick.
The assembly algorithm for a single-axle tractor trolley is as follows:
- First, install the drive sprockets on the primary shaft. You can use either flange or key mounting when doing this. If the mechanism will be large enough, the parts can be fixed by means of spot welding. Make sure the sprockets do not overheat during installation, as this will cause them to deform;
- Next, from the two half axles assemble the driven shaft. Mount the mating flanges on the end faces of the mechanism;
- Put the drive sprocket between the flanges, and then bolt the sprocket to the half axle. If you do not want to equip the mechanism with bolt connections, you can make a one-piece shaft, which should have a slot for mounting the key. The disadvantage of this type of connection is that the sprocket can shift in one of two directions under the influence of the axle forces;
- You can make the housing for the chainwheel yourself or use a prefabricated structural member. The latter already has seating for gland seals and shaft bearings;
- Inside the housing, install closed ball bearings. They are generally cylindrical in shape and mounted “in tension”;
- Fit and fix the drive shaft between the eccentric bearing supports. this allows you to adjust the shaft in its seating places. In this case, the adjustment limit should be 15 ° of the normal chain tension of the mechanism;
- In the end, install a special gasket in the power tiller. For more details on how to make a stilt choke for a power tiller, please see the video.
The quality and efficiency of this homemade low-speed gear is in no way inferior to its market analogues. It can be equipped with Neva motoblocs and other agricultural units of domestic and imported production.
Stroker for power tiller: types, how to make your own hands Link to main publication
How to increase the speed of a power tiller
There are two ways to increase the speed of your power tiller:
Let’s first consider how changing the wheels helps increase the speed of the power tiller. The standard wheel size of almost all models of the mini-aggregate is 57 cm. When replacing you can install the tires, 1.2 times the diameter. Usually 70.4 cm wheels are used. Despite the small difference, the speed of the power tiller noticeably increases. If the arches into which the tires are inserted will allow you to insert wheels with a larger diameter, you can try to add centimeters.
When you use a power tiller to work the ground, you use grousers. They are wheels with iron plates that grip freely on the ground or snow. You can buy them in specialized stores, but you can make them yourself. Their size also affects the speed of movement of the unit.
Let’s consider how to increase the speed on a power tiller in the second way. Like any technique, the cultivator has several speeds, which are controlled by gears. Typically, cultivators are moving at a speed of 2 to 15 km / h, with a large gear is 61 teeth, and on the small. 12. Increase speed by exchanging gear pairs in the reduction unit. Increasing the number of teeth. that’s how you get the highest possible speed out of your power tiller.
The replacement is recommended by professionals and preferably in specialized centers, t. к. Parts machined with a minimum of error will affect the operation of the motor. Not only is it important to change the pinion, but also the correct selection of pulley.
Features of work
A distinctive feature of the presented machine is the location of all control systems on the steering wheel (except for the gear lever). This facilitates the process. without taking your eyes off the job, the user can control the functions of the equipment.
The steering rack itself is adjustable by the height of the owner.
The center of gravity of the device is low enough to make it easy to steer.
There are additional details, devices providing multifunctionality of the Cascade (single axle tractor). The instructions say that it is possible to process even virgin land.
Modern requirements to the work of the equipment presented, are fulfilled in full. They are confirmed by ISO 9002 quality certificate.
Regular maintenance of equipment will ensure the efficiency and safety of operation.
Such work involves replacing the oil, checking the engine, adjusting the controls, lubricating the gearbox oil seal on the “Cascade” motor-block, etc. д.
If the machine is new it should be run in a gentle mode, in order to give all components a chance to rub against each other. This will avoid rapid wear and tear of the engine components, other moving parts, as well as elements of the Cascade motoblock gearbox, its oil seal and other elements.
Lubricant must be designed for four-stroke gasoline engines. Which oil to use in a single axle Cascade tractor is recommended by SunGarden and recommends ST, SG, SH, SJ, SL, SM.
The first replacement should be carried out after 2-5 hours of operation of the unit.
According to the manufacturer’s instructions, after the first season of operation the equipment should be adjusted.
This action is performed in the area of the fuel system, valves and carburetor of the motoblock “Cascade”.
This is quite a complicated process, so you should study the technology of adjustment quite carefully.
However, if there are failures, unstable engine revolutions motoblock “Cascade”, it will be necessary to adjust the carburetor already in the 2nd year of operation.
This procedure is required after prolonged stress or, conversely, after inactivity.
Warm up the engine before proceeding. The adjustment of the carburetor on the “Cascade” motor-block is made step by step. The 2 screws for minimum and maximum throttle are screwed in as far as they go and then unscrewed by a turn and a half.
The gear lever is set to the minimum stroke, but the engine should continue to run.
Use the throttle screw to set the minimum rotation cycle of the engine at idle speed.
With the help of screws to adjust the level of fuel flowing into the carburetor of the “Cascade” motoblock, it will not be very difficult. Tightening the screw will help to enrich the fuel, and loosening it will lead to an increase in air in the mixture.
Adjusting the fuel level of the carburetor of the “Cascade” motoblock should be carried out regularly (at the end or beginning of the working season).
How to make a mower with a power tiller, choose the attachment
In the summertime, one of the important tasks for farmers and landowners is to mow the grass. If you do this manually, it takes a lot of time and effort. That is why the attachment on the power block in the form of a mower is almost irreplaceable tool.
It makes work easier and saves time. For example, mowers for power tillers help to quickly prepare mowing for large livestock.
When choosing a mower on a single axle tractor, you need to assess the terrain on which it will be used. Each area has different grasses, varying in height, density and composition. That’s why two types of mowers have been developed
Disc mowers or rotary flail mowers are used for cutting vegetation up to 1 cm in diameter, thick grass and low shrubs. This model is used on flat terrain with a slope of no more than 15-20°, with a side slope of no more than 8°.Grass cut with a rotary mower is arranged in rows.
The disadvantage of such devices is a high probability of injury, and also when working with them, you must avoid rocks, as this will cause breakage. The advantage of a mounted mower is its simple design, which means a low failure rate (except for the possibility of getting stones). Important! The following safety rules should be observed when working with the mower. In particular, every two hours of operation the nuts and belt tension must be checked and all maintenance operations must be performed with the tractor engine turned off
Check all connections before starting work and do not stand in front of the mower during work.
By design, the segment mower has mowing blades that move progressively under the influence of the engine shaft. They are not afraid of thick branches and stones. The belt drive is hidden in a special cover. Quick hitch enables the mower to be quickly demounted and mounted back on to a single axle tractor.
Today, power tillers are probably the most common type of mini agricultural equipment. It happens that users of some models are no longer satisfied with the speed and performance of the unit.
How to reduce the speed of the Cascade motoblock
Nowadays, a wide variety of units are used for processing the soil. Quite well performs many tasks the equipment of a domestic manufacturer, which is called a single-axis tractor “Kaskad”. The adjustment of the carburetor of this equipment will ensure the stability of its engine speed and help prepare the machine for the new season. How to work properly with a power tiller “Cascade”, it is necessary to consider in more detail.
According to the manufacturer’s instructions, the single-axle tractor “Cascade” is a multifunctional device. It is used to perform various tasks in the process of cultivating areas of different size.
The Cascade single-axle tractor has been manufactured since 2006. The manufacturer is constantly improving the design.
Cascade” single-axle tractor, technical characteristics of which meet all modern requirements, is used for plots of 6-40 hectares.
With the presented unit, you can dig up large plots of land, plow them, loosen the soil, and transport loads and containers of liquid.
The weight of produced models ranges from 50 to 100 kg, depending on the type of work performed by the unit.
“Cascade”. a single-axle tractor, the instructions of which regulate the device and application of this equipment, provides for the work of the equipment when equipped with its engine capacity of 5 to 8 liters. с.
According to consumer reviews, power tillers, including the “Cascade”, work longer with greater engine power.
According to the technical characteristics of the “Cascade” motoblock, they use engines of domestic production DM68 with a capacity of 6 liters. с.
Sometimes foreign engines are used in the machine structure. This GS200 from Japanese brand Honda and I/C American manufacturer BRIGGSSTRATTON. Their capacity is usually 6.5 liters. с.
Single-axle tractor “Cascade”, the adjustment of the carburetor, which depends on the type of engine, has the appropriate manufacturer’s recommendations for its maintenance.
Japanese engines are durable and can operate without stopping for a long time. American equipment is environmentally friendly and easy to start, even at low temperatures. It is used in models that allow, in addition to the basic functions, to clean snow in winter.
Engines with a carburetor in the presented technique use gasoline as fuel and are four-stroke.
The structure structure of the “Cascade” motoblock is quite simple, which allows you to adjust the carburetor yourself. The replacement of parts does not require a large expenditure. They are easy to find in all specialized stores.
Carburetor can be either domestic or imported.
The unit device
This technique has a mechanical clutch, according to the structure of motor-block “Cascade”, which is accomplished by the tensioning of the V-belt.
Torque is then transferred to a two-speed chain reducer. It provides 4 speeds for a machine like the Cascade single axle tractor. Specifications show that two speeds are available for forward driving and two for reverse.
A reinforced gearbox supports the output shaft, which allows for the expression of reinforcement.
The gearbox makes the Cascade a medium-sized cascade brushcutter very stable even with additional attachments.
Heavy duty models of the equipment include a locking wheel. If the Cascade is big enough, this feature makes it easy to steer. Making turns is easy.
Steering columns allow for height adjustment. All controls are located on the steering wheel except for the shift lever.
Accelerator wire fitting || Kirloskar power weeder
If you use an imported motor, the number “61” appears in the marking. The domestic engine in the Kaskad motoblock scheme is designated by the number “6”.
The power unit is also marked. Combination “DM66” means that the oil is supplied by splashing method. Marking “DM68” corresponds to grease supply by means of a gear pump.
Cascade” engine block scheme has gearboxes with different markings. If this part has the designation 04, then the gearbox is basic. Marking 02 indicates reinforced gearbox, and 05. speed mode basic with reinforced type.
The designation 06 indicates the presence of a wheel locking, and 07. a simple reinforced gearbox.
Power Tiller gear oil operation and maintenance | How to do service of power tiller
Features of operation
A distinctive feature of the presented machine is the location of all control systems on the steering wheel (except for the gear lever). This facilitates the process. without taking a break from work, the user can control the functions of the equipment.
The very same steering rack is adjustable by the height of the owner.
Unit’s center of gravity is low enough to operate without effort.
There are additional details, devices, providing multifunctional machine “Cascade” (single axle tractor). The manual says it is even possible to work virgin land.
Cart makes it possible to transport tools and containers to the workplace.
Modern requirements to the presented equipment are fulfilled to the fullest extent. They are confirmed by an ISO 9002 quality certificate.
Service for your power tiller
Regular maintenance of the equipment will ensure efficiency and safety of operation.
This work includes changing the oil, checking the engine, adjusting the steering, replacing the gearbox oil seal on the “Cascade” power tiller, etc. д.
If the machine is new, you need to run it in a gentle mode, in order to give all components a chance to rub against each other. This helps to avoid the engine components, other moving parts, as well as elements of the Cascade moto-block gearbox, its oil seal and other elements, to quickly wear out.
When starting the equipment for the first time, it is necessary to fill the engine crankcase with oil. The mixture that is used in the Cascade power tiller must have a certain viscosity according to the SAE and API classifications.
Lubricant must be designed for four-stroke gasoline engines. What kind of oil should be used in a Cascade single axle tractor? SunGarden company recommends ST, SG, SH, SJ, SL, SM.
Regardless of whether a purchased or homemade reduction gear will be used in a power tiller, it is necessary to understand how the elements of the mechanism are located, how they are serviced and repaired. Reducers for power tillers can be of several types, each with its own advantages and disadvantages.
Scheme of connection of the reduction gears to the gearbox
As a rule, it consists of one or two stages; the main elements are pinions. This type is one of the most reliable mechanisms used in walk-behinds. Used on the most powerful power tillers. The advantages are as follows:
These reduction gears are not without disadvantages, the main of which are maintainability and price. In case of breakage they are usually replaced as a whole, which requires considerable expense. In addition, it is necessary to control the presence of lubricant, the lack of which can lead to rapid wear.
The main element is the worm gearing. Allows you to reduce the size of the motor block and improve weight distribution due to the perpendicular position of the drive shafts and wheels. Most commonly used on lightweight and low-powered power tillers.
The main disadvantage of worm gears is the absence of reversal. In addition, the entire shrink shaft can be replaced if it fails.
The chain reducer
One of the most popular types of gearboxes among users. They are most often made demountable, which simplifies maintenance and diagnosis. The most common faults are chain breakage or elongation, cutting of sprocket teeth or drive shaft keys. All of these failures are usually easy enough to fix yourself by replacing the defective part.
The advantages of this type of reducing gear are as follows:
Gearboxes of this type are characterized by having different types of gears in one mechanism: pinion-chain or worm-chain. The need for such stroke limiters is dictated by the fact that in gear and worm gears axis distance between the drive shaft and the driven shaft is regulated by the dimensions of transmission and depends directly on the gearing module and the number of teeth. In chain drives, the distance between the shafts can be adjusted by removing or adding links.
When assembling a power tiller, it is not always possible to arrange all units in an ideal position, and the need for an intermediate linkage arises. This function is successfully performed by the chain transmission, which compensates the distance from the pinion or worm gear to the wheel or drive shaft.
What a travel reducer consists of
Depending on the type of reduction gear, a homemade travel reducer consists of the following main parts: input (high-speed) shaft, output (low-speed) shaft, worm and worm wheel, drive and idler gears or sprockets.
Drive sprockets and pinions always have more teeth than driven sprockets. Auxiliary elements can be various couplings, bearings, keys. In gear and worm reducers there is necessarily a housing, which cannot be said about chain reducers. They can either have no housing at all or only cover part of the mechanism.
The design of the metering unit
Carburetors, installed on motor blocks, have a common principle of operation and device. There are four main assemblies in them:
- Float chamber. This is where the petrol that is needed to run the engine enters. When its level reaches a certain point, the float cuts off the fuel supply.
- Mixing chamber. The finely dispersed petrol dust in the mixing chamber, due to the rarefied atmosphere in the node, saturates the air. Because of the low pressure in the chamber, the fuel is drawn from the float system into the chamber. It goes through the nozzle to become a fine dust.
- Throttle valve. It is the one which regulates the rotation of the crankshaft and doses the air inflow from the cylinder. If the engine rpm of the power tiller is floating, then at least check the condition of the cable on the handle of the cultivator, which regulates the position of the choke.
- Idle speed controller. This screw is a support for the throttle drive. Screwing in the regulator increases engine idling speed.
All about idle speed regulators for power tillers
Motor vehicles, particularly motor blocks, not for the first year are the owners of agricultural plots loyal assistants that can perform a great range of works with the least amount of effort and time. However, sometimes the performance parameters of these units are no longer enough for some particular tasks, or the equipment functions poorly. Devices like idle speed reducers for power tillers can help to solve individual problems.
Reducing gear for a power tiller with his hands
The reduction gearbox can be self-built. To do this, you must first determine the type of transmission, the gear ratio, and determine the interaxial distance between the drive shaft and the shaft of the wheels.
Let’s look at an example of making a homemade chain drive for a power tiller. This design can be repeated for almost any type of power tiller with minimal changes.
Materials and parts needed
To build the reduction gear yourself, you will need the following tools and materials.
- angle grinder;
- A welding machine;
- file and drill bits;
- caliper, ruler;
- clamps and vise;
- sheet of metal 5 mm thick;
- Cuttings of pipe with an inner diameter for positioning the bearings.
The main part of the designed reducing gear for power tillers is the housing. The quality of the whole mechanism, the relative position of axles and shafts, the alignment of seats for bearings depends on it. The body will be made of sheet metal by welding. To facilitate maintenance, one of the walls can be removed.
Instead of seats for bearings and precise boring, pipe scraps with the inner diameter equal to the outer diameter of the bearing are used. They are adjusted to the necessary position and finally secured by welding.
Round steel bars of quality steel are used for shafts. It is turned to the required size, collars and grooves are made, and keyways are milled. In operation, the shafts rotate with the sprockets, transmitting torque through the chain and keys.
Shafts are supported by bearings. They absorb significant loads during the process of work. Their proper selection will largely determine durability and proper performance of the gearbox. It is optimum to use sealed radial insert ball bearings, which require minimal maintenance.
Sprockets and chain are likely to be bought or used from decommissioned equipment. Producing such parts yourself is laborious and counterproductive.
The sequence of assembly of the reduction gearbox for a motor-block follows the following algorithm:
- Cutting steel sheet into body and cover parts.
- Cutting pipes.
- Welding the bearing seats.
- Welding the body.
- Painting the body and cover.
- Installing bearings.
- Turning and milling shafts.
- Installation of shafts with simultaneous planting of sprockets and chain.
- Fitting the housing cover.
After the completed operations, the walker is mounted on the frame of the power tiller and the walking test.