How to make a bike rack with your own hands
So I decided to design the trunk myself. And I’ll tell you, I never regretted it, although I had to spend a lot of time creating a circuit and manufacturing. My project is to improve my old moped. But I’ll tell you about this some other time.
Bicycle rack: types
Before talking about how to assemble a trunk with your own hands, I think you need to explain a little what types of bicycle racks are, so that you make the right choice for yourself.
The classic, most versatile and therefore popular option for making a bike rack is to install a rear rack. It can carry various loads and even install a child seat (for example, to take your little sister with you on the road). It is best to install such a structure on the rear frame, but not behind the seat tube, which is also quite common and is a gross mistake. since in this case the trunk will be very loose, and this is already dangerous, especially if you are carrying a passenger.
I think, of all the options, the most acceptable is the first, classic type. The most reliable, roomy and durable, but the choice should be determined not only by our desire with you, but also by the type of bike.
By the way, a motorcycle rack has a lot in common with a bicycle rack and can be a good good cheat sheet. How to repair the trunk lock with your own hands read here.
DIY bike rack of different types
For me personally, for a long time, all bicycles seemed to be of the same type, and only a couple of years ago I happened to find out that this is not so, that along with budget options for a standard design, there are mountain bikes, speed bikes, and much more.
So, on a hardtail, that is, a mountain bike, it is good to put a console rack. Since this bike is not designed to carry heavy lifting loads, only the seatpost mounting option is observed here, so other types of luggage racks, although possible in this design, will however be somewhat problematic.
On a bicycle with disc brakes, it is advisable to put a classic rack, which is attached at four points. For better attachment, you can make a curved vertical strut, this is needed in order to bypass the brake caliper.
And, finally, if the bike is equipped with a rim brake structure, then absolutely any type of rack will do here, the only thing you should pay attention to is the size of the wheels, relative to which the center of gravity is selected, the size of the structure.
Now it’s time to get down to business. So, what do we need to make a homemade bike rack?
Bicycle rack: materials and tools
Different materials are used for trunks. steel, aluminum and titanium alloy. Aluminum is cheaper and allows you to get the job done faster, but it is less reliable, durable, titanium is a strong enough material, but too expensive and you will have to tinker with it, thus, the most acceptable option, both for homemade products and for a professional product, is steel. We need about a kilogram of steel with a density of 7.7 g / cm3. rectangular profile, corners and pipes.
Of the tools we need a grinder, a hacksaw for metal, a vice and a welding machine.
Trunk mounting technology
First of all, we choose the height of the future product. A very important point is the determination of the center of gravity, since it depends on this how the loaded bicycle will move on the road, whether it will be stable and manageable, or will fall on its side at the very first turn. As practice shows, the most rational solution is to install the trunk on the same level with the top of the frame.
Having decided on the center of gravity, we draw a diagram of the future product. If you are not strong in drawing, do not worry, I am a teapot in this business, I draw a dog with seven legs. Just in order not to spoil the product during assembly, you need to roughly imagine what size, what configuration it will be and, if possible, adhere to this scheme. Believe me, this is much easier than boiling a trunk by eye.
Now we proceed to the most interesting, crucial moment. We take a steel profile, bend it in a vice to the desired shape. Now we prepare corners and pipes and, cutting off the excess, we cook a perfectly even rectangle shape by welding.
When the product is somehow welded, we just have to install it on the place prepared for it on the bike and fix it. The trunk is welded onto horizontal beams and vertical racks and, for additional strength, is also fastened with bolts and nuts.
The final touch. we overwrite the unsightly seams formed from welding with a file and paint our product. Everything, work is ready. You can praise yourself for the manifestation of will and mind, and put this matter on stream.
But it is worth remembering that on the road, especially if you are used to driving over rough terrain at a good speed, trunk breakdowns may occur, for example, bolts may loosen if tightened poorly. To avoid unpleasant situations, always carry extra bolts, nuts, and insulating tape with you so that, in case of deformation of any part, you can fix it on the go.
I think now I have told everything I wanted on the topic raised. I wish you good luck in the interesting business of making the trunk and good roads.!
How to make a simulator out of a bicycle
The bicycle is not only a means of transportation, but also a way to get in shape. This old method, which has already been tested over time, is one of the most effective. No one argues that moving this type of transport along forest paths, meadows, paths or just streets is very useful. But still, the weather does not always allow you to enjoy such walks, and they are permissible only in dry and warm seasons. In addition, the bike can always break, and this will only mean that the ride is ruined. What to do if you need to exercise, but you don’t want to use a regular bike, and you don’t want to buy an expensive exercise machine for such activities? The conclusion is simple, as always. The best solution is a bike trainer with your own hands.
Types of bike stands
There are several types of simulators of this type. The two most popular of them will be presented below.
It should be noted that the first type of bike rack is much easier to assemble on your own. In any case, if there were no preliminary skills in assembling bicycles or installing such structures, then it is better to call for help from a friend who is knowledgeable in this matter.
Exercise bike on a stand
Cycling stand on a stand
The stand on a bike stand is comfortable and easy to do. To create such a simulator, you will need the following components:
- Metal corners;
Steel corners can be used at the base of the machine for greater stability. In front of such a simulator, a fork is attached (the wheel is previously removed. The attachment takes place on duralumin struts. For the rear wheel, a similar structure is built, only in this case it will rest on the pegs.
The design is quite simple and easy to implement, and its cost is very low.
Cycling stand on a riding track
This option is less easy for independent implementation, but it is much more interesting. Initially, the frame is made, the rear wheel will be located on special rollers. They can be made of different materials, but craftsmen recommend using metal pipes to create additional load. Making them move, and the wheel, accordingly, turn, is much more difficult. Typically, two such rollers are installed for the rear wheel and one for the front. Usually, a material such as rubber is chosen for them. Squeeze rollers that were previously used in the washing machine are perfect.
The axis of each roller fits into bearings that are installed on the cheeks of the assembly. If desired, two parallel footpegs can be installed on the entire structure to make it easier to get off the bike.
Next, you need to purchase a drive belt that attaches to the front and near rear roller.
This type of exercise machine even has the ability to adjust the load. This is done quite simply. For this, a tie rod is installed between the two rear rollers. An increase in the load occurs when its nuts are tightened, and if there is a desire to reduce it, then you just need to loosen them.
A step-by-step version of assembling a bicycle simulator will come in handy for those craftsmen who nevertheless decided to acquire such a simple device. When making it, it is better to enlist additional help, since initially not everyone will be able to accurately repeat the entire mechanism.
- Cut out the base from the plywood board. In this case, it is important that the thickness of the bar is at least 20 millimeters. The extension should be cut from a thicker board. They can be fastened both with high-quality glue and thanks to metal corners. It should be noted that the latter method will be more reliable.
- Using plywood pieces in the form of a triangle, the entire rack should be fastened.
- The resulting platform must necessarily be fixed with metal platforms. It is important that at the same time there are stiffeners, which can be corners made of aluminum. Two holes are made in the racks, after which they are bent by 20%. The rest of the posts with one hole must be bent 60%.
- The front wheel is removable, but the rear wheel should only be loosened, and the flap under it should be removed completely. A staple stand attaches to the rear of the wheel. It is important not to forget to put on the washers from the side of the side brackets, after which the nuts should be tightened. The front wheel fork attaches to the rack with an extension. The end of each rack should be additionally extended with nuts, while observing a distance of 20 centimeters from them to the wheel.
- It will be too easy to spin the wheels as the bike will be empty. To complicate the task, you need to additionally install videos. Their installation is carried out under, directly, the tire, while the effect of artificial braking should be produced. The most reliable way to fix the rollers is on the brackets. Longitudinal slots are better suited. The metal pad is attached to the roller bracket, and they are secured together with the platform.
- Additional load can also be generated by the brake. They will have a strong impact on the wheel. You can do it yourself, using a bar, two crossbars, a load, a roller and a holder. The crossbar is mounted to the wheel fork. In this case, a screw must be passed through the holes in them. It is thanks to him that the holder necessary for this purpose is attached.
- After the work carried out, the end of the rod is inserted into it, then fastening is carried out with a screw. He will be the axis. The roller, which has a small longitudinal cut, is installed at the very bottom of the rod, the weights should be fixed at its end. During the entire period of using the bike rack, it will gradually press against the wheel, braking it in this way. It will take significant effort to accelerate the bike to a higher speed.
In addition to the ability not to spend large sums on the purchase of an exercise bike (and a good device costs decently), its low weight also turns on to the positive aspects. Thanks to this, the bike rack can be moved to any room and practiced there.
You can adapt your old bike for this purpose, as well as a recently purchased one. Already with the arrival of heat, it will be possible to collect it again and go for a walk.
It is important to note that such exercises will still have a beneficial effect on the figure. Of course, it will not be as effective as driving on this vehicle over uneven terrain, but still such an alternative is better than nothing at all.
In addition to the very obvious positive aspects, a self-made bicycle simulator also has a sufficient number of disadvantages. They can be distinguished into the following list:
- Low stability. If it was decided to lose weight in this way and not spend money on buying things that later become unnecessary, then it is worth considering that the design is not calculated for too large people. Pegs can bend altogether, further damaging the bike’s structure, not to mention how many injuries a person can get when falling;
- Efficiency. Experienced users will not like this “simulator” due to its low efficiency. Indeed, on a special simulator, you can choose the optimal load, but here you just get mechanical pedaling, which gives a lower result;
- Some people still won’t be able to make it on their own if they don’t know at least a little about the technical characteristics.
DIY bike trailer. :
There is a new renaissance for bicycles today. Here and the turn of the population on the environmental friendliness of vehicles, cultivated in every possible way, and fatigue from constant traffic jams. Of course, the bike looks pale on modern trails, which cannot be said for the countryside. There he is in his place, and in the city, if you do not meddle on the busiest streets, it can be useful.
But this horse on two wheels without a motor is not very suitable for carrying luggage. precisely, it is practically not adapted. But you can attach a trailer to it with your own hands. This improvement is appropriate and not too difficult to make.
How to make a bike trailer with your own hands
The trailer design contains the following elements:
Step-by-step instructions (master class) for making a trailer for a bicycle
We make plates on which we will plant the wheel axles. There are 4 such plates, 75 mm long, cut from the strip
50×4 mm. We will cut the strip with a grinder, putting a cutting disc.
Using the ruler, we look for the center on the plate and mark it with a felt-tip pen. Then we mark this point with a punch and a hammer. Having installed the plate on the drilling machine and clamping it in a vice, we drill a through hole at this point. We select the minimum rotation speed of the drill. We do such operations with all 4 plates, cut out strips with a grinder, starting from the hole and up to the side of the plate.
We take a square pipe, make segments of a given size from it, and then we weld the frame from them.
Now we will make a drawbar, that is, a knot, or a device through which the trailer is attached to the bike. Materials will require the same square pipe and a strip of 25×4 mm. This unit is attached to a tube, fixed vertically on the frame, using 2 tie bolts.
We drill a hole in the 2 plates that form the clamp, and insert the upper bolt into it. The lower one is attached perpendicularly, we pass it through the lower clamp and screw it into the hole, which we drill in the vertical tube. Several such holes can be drilled, then the drawbar can be positioned at different heights, adapting to a specific bike. over, if you have several of them.
We start making the platform. We have declared MDF, but, perhaps, it is better if the material of the platform is waterproof. After all, if the MDF gets wet, it will crumble, and this in this case will not suit us. It is better to take film faced plywood if you have.
So, having picked up the material, we cut out a 70×100 cm canvas from the sheet.Place it on the frame, mark the points for drilling holes and draw lines for rounding the corners.
We install a hitch, or a towing hitch. It is easy to install using the bike rack: we attach the part of the split hinge that contains the ball to it. And we fix the other part of the hinge on the drawbar.
It remains to install the toolbox. There is just room for him in the front of the platform. We fasten it with an elastic rope.
Here’s a solid trailer, on silent bicycle wheels and with a toolbox. There are a lot of things you can place on it for transportation.
What is a bicycle machine and its varieties
Lewis Carroll wrote in the children’s fairy tale “Alice in Wonderland”: “You have to run as fast to just stay in place.” A perfect statement for a bike rider. With the closing of the cycling season, “iron horses” are waiting for the owners, and the muscles of cyclists lose their elasticity and endurance. A suitable bicycle rack makes it possible not to get out of the habit of the bike, and to maintain muscle tone.
There are a variety of exercise bikes that mimic the demands of a cyclist and are suitable for training. However, why invent loads and buy additional exercise equipment when you have your own favorite and, moreover, a real bike. Several varieties of bicycle machines provide a choice of both loads and financial costs for the purchase. The two main categories are the roller machine and the trainer.
The Trainer bike rack is very interesting because, without taking up space, it gives almost the same loads and feelings as riding a bike. Regardless of the type of trainer, the installation of the bike on it is the same. the bike is hung in the triangle of the machine on a special eccentric. A load-imitating roller is pressed against the rear wheel tire and the machine is ready to go. Some of the differences in this type of bicycle machine are in the structure of the roller mechanism.
Blades are installed on the roller axis, which give resistance to the wheel, depending on the gained speed. The simplest and cheapest option, but it has several negative properties, such as lack of regulation and high noise.
Magnets are used to resist the wheel. Noticeably quieter than air machines, and when buying such a machine in the middle and higher price category, it is possible to adjust the loads.
Resistance to wheel rotation is created by synthetic oil inside the machine’s mechanism. The quietest, most ergonomic and expensive machine. Considered the closest experience to a real bike ride.
For simulators of this type, very smooth tires are needed to avoid any errors in the rotation of the roller. This type of trainer is often used for road bikes, but it will work for mountain bikes as well if you put on a smooth tire. The ideal option would be to buy a special tire with a bead on the training wheel. Of course, in this case, you should pay attention to the option of a quick-release wheel mount. It is also worth installing a stand under the front wheel, otherwise the landing will be tilted, and a disproportionate load will come to your hands.
An interesting, small-sized solution that turns any bike with a small addition in the form of a smooth tire into a good machine. Perfect for muscle training, and the following type of simulator allows you to work on a sense of balance.
The roller bike stand is named for its main elements. rollers similar to those present in trainers, but with a larger diameter.
The machine consists of three rollers assembled on a sliding frame. Do-it-yourself machine adjustment consists in adjusting the distance of the rollers to accurately hit the wheels of the bicycle. The middle roller is linked to the forward gear, allowing the front wheel of the bike to spin.
When typing, the same feeling arises as on the road, it is necessary to make efforts not only to accelerate, but also to maintain balance. It’s the same as on the road. it is exciting and at the same time creates a danger for inexperienced cyclists. Unlike a trainer, a bicycle on a roller machine is not fixed in any way and is held on the simulator only by steering. Experienced athletes recommend for beginners to conduct classes in small rooms, in which there is the possibility of holding the wall in the event of a departure from the simulator. The characteristic disadvantages of such simulators are the unregulated load and the high noise level that the machine emits.
On the Internet, there are many schemes of homemade simulators. The principle of the roller simulator is so simple that with minimal skills and low financial costs, you can assemble it with your own hands within a few hours. In the most common version, plastic pipes are used as rollers, and a pine bar is used as a mounting frame. Power transmission from the middle roller to the front roller is carried out using a rag tape or a rubber band.
ELECTRIC MOTOR FOR BIKE: MAIN TYPES OF ELECTRIC MOTORS AND WHAT THEY DIFFERENCE
An ideal solution for those who want to make an electric bike with their own hands is an electric motor for a bicycle. Consider the main types of electric motors, by installing which on a regular bike, you will get an electric bike. capable of speeds of 50-70 km / h.
ELECTRIC MOTOR FOR BIKE: BASIC TYPES
In this article, we will look at the main types of such a device as an electric motor for a bicycle. So, it is worth saying that the motors that are installed on electric bicycles are of the following types:
- wheel motor;
- outboard engine;
- frictional engine.
The wheel motor is the most common type of electric motor today. It should be noted that this type of electric motor is usually installed when converting a regular city bike into a bicycle with an electric motor.
As for the appearance and design of the bike, they hardly change, since the motor-wheel is almost invisible. This engine is mounted to both the front and rear hubs, but sometimes it happens that they put one motor on each wheel.
The bike is considered to be completely re-equipped when the battery and throttle are installed. Often the wheel hub motor is sold with spokes already mounted to the hub.
The motor-wheels have a power in the range of 150. 2000 W. Note also that the wheel motors have three main versions: for 24, 36 and 48 V. And each of these types requires its own battery.
A bicycle on which a motor-wheel is installed is capable of accelerating to 60-70 km / h and has a power reserve of about 40-50 km. Naturally, if you move uphill, these indicators are significantly reduced.
To increase the power and speed of the electric bike, some experimenters increase the power supply to 72 V. But, this is a rather risky idea, because the electric motor installed on the bike can be damaged.
The outboard is a standalone unit attached to the bottom bracket or bottom tube of the bike. A mandatory point is that a special protective cover is installed on the electric motor and chain drive.
The engine transmits power to the rear sprocket via a chain drive. The engine is powered by a battery, which is attached to the bottom of the bike’s supporting platform.
The power consumption and speed of the bike is regulated by a special electronic controller. The controller is controlled by the handlebar (similar to the throttle on a motorcycle).
If we compare this design with a motor-wheel, then the total mass of the bike will increase slightly. However, the speed of the electric bike will increase significantly, and may even reach 120 km / h.
As well as the motor-wheel, the electric drive of the considered type can be installed on almost any bicycle.
ENGINE FRICTIONAL GEAR
The electric drive, which is based on a friction mechanism, works thanks to the following principle. The transmission of torque from the shaft of the electric motor is carried out directly to the tire of the vehicle wheel.
This type of transmission of torque from the engine to the wheel is considered ineffective, since it has a number of quite significant disadvantages, namely:
- very low efficiency;
- significantly reduces the service life of the wheel;
- requires constant monitoring of the pressure in the wheel;
- in wet weather, the transfer roller slips noticeably.
The only thing that justifies the permissibility of using this type of electric motor is that it can be simply installed without disassembling the bike.
ELECTRIC MOTOR FOR BIKE OWN HANDS
Since making an electric motor for a bicycle with your own hands is far from an easy task, this stage of making an electric bike comes down, basically, to the search for a finished product from which this actual engine can be removed.
First, I would like to warn you that most of the electric motors that can be adapted for this case are powered by 220 V AC.
Accordingly, to provide them with power, an impressive battery or a system of multiple batteries is required. And this, in turn, significantly increases the weight and dimensions of your vehicle.
So, people who believe that buying a ready-made solution is, at least not interesting, ask the primary and most important question: which engine is better to use??
The most popular option for solving this problem is an engine from an electric household lawn mower (trimmer). However, do not forget that lawn mowers are available with engines that have different powers, which is very important for installing them on a bike.
For example, a low-power electric motor will not move the vehicle. you need to slightly help it with the pedals. And while driving uphill, you will have to help the electric bike with pedals.
But if you take a more powerful electric motor, then you can rest your legs even during climbs and start from a place without helping with the pedals. Of course, the more powerful the electric motor, the greater its weight.
Bicycles are sometimes equipped with electric motors from electric saws or even washing machines. Although it all comes down, in fact, to the same thing. the choice of parameters such as power, weight and dimensions.
The advantage of this type of engine is that it produces much less noise than gasoline engines. An e-bike does not make a lot of noise, while a bike with a gas engine on will keep you from hearing birds singing.
Electric motors can be used completely different, it all depends on what exactly was lying around in your attic, or what happened to you at the flea market.
BIKE MOTOR KIT
Today, a motorcycle kit for a bicycle is not uncommon. There are a number of different bike-mounted motors on sale. Usually, the motorcycle kit provides universal mounts that fit most modern bikes, but there are motors designed only for certain bike models.
Some models of motorcycle kits that are most popular, consider further:
SINGLE-CYLINDER TWO-STROKE MOTOR (48 CM3 DISPLACEMENT) FOR ROAD BIKES
The installation of such a motor is carried out to the bike frame, and the rotational movement is transmitted to the front sprocket. This enables full use of the speed switches.
The working fluid of this engine is a gasoline-oil mixture. The engine is air-cooled and has a power output of up to 1.5 HP, which is enough to drive on the road without hills.
When climbing or accelerating, the cyclist should assist the engine with the pedals. The engine speed limit is 30 km / h. The engine “eats up” 1 liter of fuel per 100 km.
Naturally, the engine comes complete with a gas tank and a muffler to complete the conversion of your bike to a moped.
MOTORETS FOR BIKE “COMET” SUSPENDED TYPE
This motorcycle kit is attached to the trunk over the rear wheel. Rotational motion from the engine is transmitted to the rear wheel of the bike. Sometimes the kit is installed over the front wheel of the bike. For this case, engine power is transferred to the front wheel.
The motorcycle kit is presented in several modifications: the engine displacement ranges from 1 to 2 hp. It should be noted that the maximum speed of the most powerful engine is 50 km / h.
The motorcycle kit under consideration has a built-in muffler and a fuel tank, the ability to quickly dismantle the engine, and a fairly low weight (about 5 kg).
This is one of the positive qualities, however, there are also negative points, and quite significant: the motorcycle kit has a fairly high cost, the quality of the drive device raises many questions, the aesthetic component of the engine is far from perfect (as if they had somehow installed the motor from a lawn mower with their own hands).
YAMAHA BIKE MOTOR
Even bicycle motors are produced by a well-known manufacturer. It is worth noting that these engines have much better technical and quality characteristics than the moto kits mentioned earlier. These motors can be up to 4 hp, which is enough to not pedal assist.
But the cost of such a toy is quite impressive. Today Yamaha is gradually switching to the manufacture of bicycle electric motors, and in the near future gasoline engines from this manufacturer will be in short supply (there are already few of them).
TWO-STROKE GAS BIKE MOTOR
What China does not produce. The new invention of the Celestial Empire was the two-stroke bicycle gas engine, the volume of which is 48 cm3. It is not particularly different from the motorcycle kit described earlier, except that the gas tank is replaced with a gas cylinder.
The rationale of this invention is questioned, since the gasoline engine has low consumption. Naturally, you will not receive any guarantees of safety when driving on a dubiously assembled gas cylinder.