Come ruotare le leve all’interno di 10 gradi

GCN Italia

29 Jan 202408:46

Summary

TLDRThe video demonstrates how to make a simple cardboard jig to set the angle of brake levers to 10 degrees, in line with new UCI regulations. It provides step-by-step instructions on measuring and cutting the cardboard, folding it precisely to create a 10 degree angle, and adhering a rigid plastic piece to lock the angle. Though not extremely precise, the jig can be used to evenly set left and right brake levers and customize rider preferences, copying what the pros do within the new regulations.

Takeaways

😀 How to make a simple cardboard template to set the angle of brake levers to 10 degrees, as per UCI rules
📏 The template uses basic trigonometry to calculate the required dimensions
✂️ Materials needed: cardboard, scissors, glue, ruler/tape measure, something thin but not sharp like a chain wear indicator
➡️ Cut the cardboard 5cm wide for the tab, mark lines at specific distances, fold along the lines
⏱ Measure carefully each step - 10cm from first fold to next bend, 17mm space in between
📐 Bend tab to create precise 10 degree angle
📌 Glue thin plastic piece on top to reinforce and create flat surface
👍 Check if lever touches template edge to see if angle is less than 10 degrees
🔄 Template can be used on both sides of handlebar for adjusting left and right brake levers
✅ Suggestion to design a more precise 3D printed version

Q & A

Why did the pro cyclists have to change their brake lever position this year?
-Due to a new UCI regulation, pro cyclists can now only angle their brake levers inwards up to 10 degrees, rather than bending them more extremely as they did in previous years.
How are the pro team mechanics getting the brake levers within the new 10 degree regulation?
-The video suggests pro team mechanics may be using 3D printed jigs or templates to position the brake levers precisely within the new 10 degree angle limit.
What is the purpose of making a brake lever positioning jig out of cardboard?
-It allows amateur cyclists to copy the pros and position their brake levers consistently at the same angle on both sides, even if not strictly constrained by the UCI regulation.
What key supplies and tools do you need to make the cardboard brake lever jig?
-You need a rigid corrugated cardboard, scissors, a metric ruler or framing square, a pen, strong glue, a thin non-sharp implement (like a chain wear indicator), and something thin but rigid like plastic sheet.
What is the math behind calculating the critical dimensions of the jig?
-Using basic trigonometry, setting the main angle to 80 degrees (10 degree difference from a right angle) dictates the length of the sides to create that angle in a triangle.
How is the jig used to actually position the brake levers?
-The jig is placed against the handlebar grip to act as a guide. If the lever touches the front of the jig, it is angled in too far and needs adjustment.
What are some limitations of using cardboard versus more advanced materials?
-Cardboard may flex or compress over time affecting accuracy. A 3D printed jig would likely be more precise and durable.
Could you use this jig concept to orient shifters and other handlebar accessories?
-Yes, the jig could be adapted with different dimensions to consistently position shifters, lights, cameras, cycle computers etc.
Why angle brake levers inwards at all instead of having them point straight out?
-Angling brake levers inwards brings the hand/wrist into a more ergonomic position requiring less strain and effort to brake and shift.
What are some other potential uses for this style of positioning jig?
-With some adaptation, the concept could be used to consistently orient or position parts in welding, woodworking, machinery, assembly, printing and various other applications.

Outlines

00:00

🚴 DIY Brake Lever Angle Adjustment

This segment introduces a new UCI regulation that limits the angle at which professional cyclists can adjust their brake levers to a maximum of 10 degrees. To comply with this rule without specialized equipment, the speaker suggests a DIY method using common household items such as cardboard, scissors, tape measure, pen, strong glue, and a non-sharp, thin object. The process involves creating a template to accurately position the brake levers within the allowed angle. This method not only ensures compliance with UCI regulations but also offers amateur cyclists a way to mimic professional setups for optimal brake lever positioning. The speaker explains the step-by-step creation of the template, utilizing basic geometry to achieve the correct angle, emphasizing the importance of precision in each step.

05:01

🔧 Finalizing and Using the DIY Angle Tool

The continuation of the DIY guide for brake lever angle adjustment focuses on finalizing the template and using it to check and adjust the brake levers accurately. After creating the template with a specific angle, the speaker demonstrates how to use it by attaching it to the bicycle's handlebar to ensure the brake levers are within the 10-degree angle limit. The method emphasizes precision and provides a practical solution for cyclists who wish to ensure their lever angles are consistent with professional standards, even without UCI oversight. The speaker suggests that creating a more durable version of the tool with a 3D printer could offer even greater accuracy. The segment concludes with an invitation for feedback and a teaser for future content, reinforcing the channel's focus on cycling enthusiasts who appreciate professional-level tips and tricks.

Mindmap

Keywords

💡trigonometria

Trigonometria refers to the branch of mathematics that studies triangles and the relationships between the sides and angles. In the video, the narrator uses basic trigonometry to calculate the optimal angle (10 degrees) to bend the brake levers so they are compliant with UCI rules but still comfortable for the rider. He uses concepts like hypotenuse, opposite side, and adjacent side from trigonometry to determine the precise measurements needed for the jig.

💡manopole

Manopole refers to the brake lever hoods on road bikes. The narrator is explaining how to make a jig to position the brake lever hoods at the optimal inward angle for comfort and UCI compliance. He wants both left and right brake lever hoods to have the same optimal angle, so the jig allows him to consistently position them.

💡regolamento UCI

Regolamento UCI refers to the racing regulations set by the Union Cycliste Internationale (UCI), the governing body for professional cycling. For 2022, the UCI implemented a new rule that limit how far inwards pro cyclists can angle their brake hoods to a maximum of 10 degrees. The jig in the video allows compliance with this new regulation.

💡stampante 3D

Stampante 3D refers to a 3D printer. The narrator speculates that pro team mechanics may be using 3D printed jigs to accurately set the brake hood angles on their bikes within the new 10 degree limit. A 3D printed jig could potentially be more precise than the cardboard one demonstrated.

💡forbici

Forbici means scissors in Italian. Scissors are used to cut out the cardboard material for the jig.

💡colla

Colla means glue in Italian. Glue is used to affix the layers of cardboard together to create the angled jig.

💡leve

Leve refers to brake levers. The jig is designed to help set the angle of the brake levers (manopole) to an optimal inward position.

💡cartone

Cartone means cardboard in Italian. The jig is made by cutting, scoring, and gluing together pieces of cardboard to create an angled guide for positioning the brake levers.

💡dima

Dima refers to a template or jig. The narrator uses this term to describe the cardboard construct he builds to assist in accurately angling the brake levers.

💡manubrio

Manubrio means handlebars in Italian. The jig is designed to sit on top of the handlebars and guide the positioning of the brake lever hoods which are mounted on the handlebars.

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