Process of changing the front horn on my 29" MTB/proceso de cambio de bocina delantera de mi MTB 29"
Cycling
Process of changing the front horn on my 29" MTB/proceso de cambio de bocina delantera de mi MTB 29"
Que tal, cycling, hoy quiero compartir con ustedes algo que me ocurrió en el mes de diciembre del año pasado 2025; hay cosas que creemos no se dañan y en esta ocasión viví algo que casi me hace pasar un mal rato. Todo empezó con un ruido extraño al frenar y una sensación de falta de respuesta. Al revisar la bocina o maza delantera de mi bicicleta rin 29, me encontré con el desastre: la rosca que sujeta el adaptador del freno de disco se había aislado por completo. La presión constante del frenado terminó por barrer los hilos del aluminio, dejando el sistema de seguridad más importante de la bici totalmente inservible. Lo aterrador es que esto ocurrió en un cruce cuando fallo el disco y se alargó la frenada, ya que solo estaba en funcionamiento el freno trasero.
Hey, cycling fans, today I want to share something that happened to me in December of last year, 2025. There are things we think can't be damaged, but this time I had an experience that almost gave me a hard time. It all started with a strange noise when braking and a feeling of lack of response. When I checked the horn or front hub of my 29" wheel bicycle, I found a disaster: the thread that holds the disc brake adapter had completely stripped. The constant pressure of braking ended up stripping the aluminum threads, leaving the bike's most important safety system completely useless. The scary thing is that this happened at an intersection when the disc failed and braking took longer, as only the rear brake was working.
I had two options: buy a new wheel or face the challenge of rebuilding the current one. Since the rim and spokes were structurally flawless, I decided to go for the savings and customization route. I bought a new hub of the same size (same number of holes, of course) and got to work. The hub was second-hand, but in excellent condition. The first step was to take it apart. Patiently, I loosened each spoke until I freed the damaged rim or hub. With the spokes out, I took advantage of the fact that the metal was in good condition, but aesthetically worn. I gave them a thorough cleaning and, to enhance the look of the bike, I decided to paint them matte black. This small detail made them go from looking like old parts to looking like high-end components. What a trick!
Tenía dos opciones: comprar una rueda nueva o enfrentar el reto de reconstruir la actual. Como el aro y los rayos estaban estructuralmente impecables, decidí ir por el camino del ahorro y la personalización. Compré una bocina nueva de la misma medida (mismo número de huecos, por supuesto) y puse manos a la obra. La bocina era de segunda mano, pero en excelentes condiciones. Lo primero fue el desarmado. Con paciencia, fui soltando cada rayo hasta liberar la bocina o maza dañada. Con los rayos afuera, aproveché que el metal estaba en buen estado, pero estéticamente desgastado. Les di una limpieza profunda y, para elevar el look de la bici, decidí pintarlos de negro mate. Este pequeño detalle hizo que pasaran de verse como piezas viejas a parecer componentes de gama alta. Que trucazo.
Once the paint was dry, it was time for the moment of truth: lacing. I crossed the spokes one by one, connecting the new rim to the original rim. It's a job that requires precision and patience, making sure the tension was even to prevent the rim from “dancing.” In the end, I managed to rescue my 29" wheel. Not only did I regain the safety of a firm and functional disc brake, but now my wheel has a new look thanks to that touch of black paint. It was a purely mechanical process that reminded me that, with a little skill, you don't always have to throw away something that still has life left in it.
Una vez seca la pintura, llegó el momento de la verdad: el enlazado. Fui cruzando los rayos uno a uno, uniendo la bocina nueva con el aro original. Es un trabajo de precisión y paciencia, asegurándome de que la tensión fuera uniforme para evitar que el rin quedara "bailando". Al final, logré rescatar mi rueda 29. No solo recuperé la seguridad de un freno de disco firme y funcional, sino que ahora mi rueda tiene un estilo renovado gracias a ese toque de pintura negra. Fue un proceso de mecánica pura que me recordó que, con un poco de técnica, no siempre hay que desechar lo que todavía tiene vida útil.
This will give me at least a few months to save up and buy some better speakers or hammers that are fixed to the disc with screws. One detail is that I started taking the photos when I was already halfway through the job.
Esto me dará por lo menos unos meses para ahorrar y poder comprar unas bocinas o mazas de mejor gama y que sean de tornillo fijo para el disco. Uno de los detalles es que empecé a tomar las fotos cuando ya iba a mitad de trabajo.
Fotos tomadas desde mi Honor X8b plus
Thanks for reading, see you in a future post
Gracias por leer, hasta un próximo post
0E-8 CASHMAP
Well done sir. I learned a long time ago before starting any type of repair is to take photo's every step of the way. Makes re-assembly much easier if I forget a step (or worse have a left over part not sure where it came from). With mobile phones with camera's, best handy tool ever.
Absolutely. With each photo, we are provided with the necessary step-by-step instructions. This is how I learned the correct placement of the spokes on the rim and hub. The great thing about this post is that if I need to do this procedure again, I can just go to this post and that's it. Thank you very much for commenting.
Well done, good thing you found out in time and could stop before you're in the middle of the crossing.
Hello, well done on your mechanical skills — that’s impressive!
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