Alexei Volkov
Bicycle mud flaps are a small device that sits near the front tire and prevents mud from being flung in front of the rider during muddy rides. They are useful in keeping the grime out of your eyes and off your clothes. You can buy them ready-made or make them yourself. To make your own, you can use old rubber boots, a yoga mat, a flexible plastic cutting board, a vegetable-tanned horse hide, an old bicycle tube, or even a beer can. The process involves cutting the material to size, drilling holes, and bolting the mud flap to the fender.
| Characteristics | Values |
|---|---|
| Materials | Plastic, rubber, yoga mat, nylon fasteners, old inner tube, cable ties, veg-tanned horse hide, old rubber boots, flexible plastic cutting board material, beer/soda can, razor blade, tinsnips, glue, pliers, gloves, rope, zip ties |
| Tools | Drill, Swiss Army Knife awl, scissors, bolts, nuts, washers |
| Process | Cut material to size, drill holes, bolt to fender, secure with rope or zip ties, add reflective tape (optional) |
| Benefits | Prevent mud from being flung onto rider, improve visibility to other cyclists and traffic |
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What You'll Learn
Cutting the plastic
When it comes to cutting the plastic for your bicycle mud flaps, there are several methods and materials you can use. One approach is to use an old inner tube from a bicycle tyre, which can be cut to size and attached to the fender. Mark the width of your fender on the rubber and cut the rubber strip to this length, or make it slightly wider for better coverage. You can also decide how long you want the mudflap to be, with some people recommending it ends about an inch off the ground for optimal mud protection.
Another option for the material is to use a flexible plastic cutting board, which can be cut to size and shape with scissors or a sharp knife. You can also use old rubber boots; cut a strip from the sole for reinforcement and shape the rest of the bootleg to fit your fender. If you're feeling creative, you can even use empty beer or soda cans. Use a razor blade or tinsnips to cut the can to size, and be sure to include the tapered part just below the rim to help maintain a nice curve in your finished mudflap.
Once you've decided on your material and cut it to the desired size and shape, the next step is to attach it to your bicycle's fender. This usually involves drilling holes in the plastic fender and the mudflap material, and then bolting the two together. You can also use other fasteners like cable ties or zip ties to secure the mudflap in place. It's important to ensure that the mudflap doesn't rub against the tyre, so adjust the placement accordingly.
Additionally, you can add some optional features to your plastic bicycle mud flaps. Reflective tape can be added to the fender and mudflap, increasing your visibility to other cyclists and vehicles. If your mudflap is prone to blowing around, you can add some washers and bolts to the bottom to weigh it down and keep it in place. With these cutting and assembly steps, you'll have functional and protective plastic bicycle mud flaps in no time!
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Drilling holes
First, decide on the size and shape of your mudflap. It is recommended to make it bigger by about half an inch on all dimensions, as you will be folding over approximately a quarter inch on each side. You can freehand this or draw the shape with a marker.
Next, using a sharp tool like a razor blade, carefully pierce the plastic and cut out the shape. Fold over the edges, ensuring symmetry, and crease the folds well. This will give you a neat, curved finish on your mudflap.
Now, you need to drill the holes. For plastic fenders, a Swiss Army Knife awl can be used. Decide on the placement of the holes, considering the overall assembly of the mudflap. Drill two holes in the fender, about an inch apart. If using rubber, cut the rubber to shape and size, and drill a hole about half an inch from one end.
Finally, bolt the rubber to the fender using the holes. Drill through the fender into the rubber to create a second hole in the rubber, and bolt the two together again. This will securely attach the mudflap to your bicycle.
You can further secure the mudflap by wrapping the arms around the bike shock and using rope or zip ties through the holes. This will ensure the mudflap stays in place and doesn't flap around.
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Attaching the flap
Cutting the Flap:
First, decide on the desired size of your mud flap. It's generally recommended to make the mud flap slightly wider than your fender, especially at the base, to provide optimal coverage. Mark the dimensions on the material, adding about half an inch to each measurement to account for folding and creasing. Carefully cut the material to shape using scissors or a razor blade.
Drilling and Securing:
Drilling holes in the plastic fender and the mud flap is an essential step to securely attach the two together. Using a Swiss Army Knife awl or a similar tool, drill two holes in the fender about an inch apart. Then, drill a hole in the mud flap, approximately half an inch from its end.
Bolting the Flap:
Now, it's time to bolt the mud flap to the fender. Align the top hole of the mud flap with one of the holes in the fender and bolt the two together. Then, create a second hole in the mud flap by drilling through the fender into the mud flap. Secure the mud flap by bolting it to the fender through this second hole.
Additional Tips:
You can enhance the security and functionality of your mud flap by adding some extra components. Consider using washers and bolts at the bottom of the mud flap to weigh it down and prevent excessive movement. Additionally, reflective tape can be added to the fender and mud flap, improving visibility and safety during low-light conditions.
Attaching the Arms:
If your mud flap has arms, wrap them around the top of the bike shock. Secure the arms in place using rope, zip ties, or cable ties, threading them through the holes you've made. Repeat this process for the bottom of the shock to ensure a snug fit.
By following these steps and adapting them to your specific mud flap design, you'll be able to effectively attach the flap and enjoy a cleaner, safer riding experience.
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Securing the flap
One common method is to use cable ties or zip ties. First, ensure the mudguard is correctly positioned near the front tire, then wrap the ties around the bike's shock and the mudguard's arms to secure it in place. This method is quick, easy, and inexpensive.
Another option is to use bolts and nuts. Cut a rubber strip to the desired length and width, then drill holes in the rubber and the fender. Bolt the rubber to the fender through these holes, and the mudguard should be securely attached. This method may require drilling into the plastic fender using a tool like a Swiss Army Knife awl.
For those using old rubber boots, it is recommended to drill 2-3 holes in the rubber and bolt it to the fender and a bracket. This helps to keep the mudguard from flopping around.
If using a yoga mat, nylon fasteners can be used to secure the mudguard to the fender.
For a more unique approach, one can use an empty beer or soda can. Cut the can to the desired shape and attach it to the fenders with glue or rivets. Ensure that any sharp edges are folded over to avoid injury.
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Adding reflective tape
Choosing Reflective Tape
You can find reflective tape at various retailers, including Amazon, eBay, and bike shops. When choosing reflective tape, consider its colour, adhesive strength, and ease of application. Some tapes, like 3M reflective tape, are known for their effectiveness and strong adhesive. You can also find reflective tape in different colours, such as red or black, to match your bicycle's style or to indicate the direction of travel, with red often used for the rear and white for the front.
Preparing the Surface
Before applying the reflective tape, ensure that the surface of your mud flaps is clean and dry. Use a mild detergent or alcohol wipe to remove any dirt, grease, or debris. This will help the adhesive stick better and ensure that the tape adheres properly.
Measuring and Cutting the Tape
Measure the length and width of your mud flaps to determine the amount of tape you need. Cut the reflective tape to size, adding a little extra length if you want to wrap it around the edges of the flaps. If you're applying tape to both sides of the flaps, cut the tape into sections that match the shape of the flaps.
Applying the Tape
Peel off the backing of the reflective tape and carefully align it with the edge of the mud flap. Start from one corner and slowly smooth the tape onto the flap, working towards the opposite corner. Ensure that the tape is straight and free of bubbles or creases. If needed, use a squeegee or a flat object to smooth out any bubbles.
Securing the Tape
Once the tape is in place, apply pressure along the edges and surface to ensure a strong bond. You can use your fingers or a roller for this step. If your tape has a weak adhesive, you might consider using additional glue or double-sided tape for extra security.
Testing and Adjusting
After applying the reflective tape, take your bicycle for a test ride, especially at night or in low-light conditions, to observe the reflectivity and ensure that the tape is securely attached. If you notice any issues, such as peeling or bubbling, stop and readjust the tape as needed.
By following these steps, you can enhance your visibility and safety while riding your bicycle, especially during night-time or low-visibility conditions.
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Frequently asked questions
You will need an old inner tube, a few cable ties, a razor blade, and tinsnips. You can also use a yoga mat and nylon fasteners.
First, cut the rubber to the same width as your fender, or a bit wider. Drill two holes in the fender, about an inch apart, and one hole in the rubber about 0.5 inches from the end. Then, bolt the rubber to the fender using the top hole. Drill through the fender into the rubber to make a second hole, and bolt the two together again.
Wrap the arms of the mud flap around the top of the bike shock. Then, use rope or zip ties to secure the mud flap through the holes. Do the same for the bottom of the shock.
