Step 12: La horquilla para la bicicleta (fork to bike)
La forma más segura de unir el enganche a la bicicleta es a través de una horquilla (hay uno o más instructables acerca de esto), para no tener que preocuparme por eventuales trabas en las curvas (ver instructable...). La horquilla la hice de caño de hierro para instalaciones eléctricas, de 5"/8 y paredes semi gruesas. Corté un trozo algo más largo de lo que necesitaba, lo llené de arena seca y lo doblé en U. Igual se aplastó un poco, pero en forma controlada.
En el medio de la U soldé un tornillo de 5"/16 que agarra la arandela del enganche. A los agujeros de los brazos la U donde entra el eje trasero de la bicicleta los reforcé con arandelas gruesas soldadas. Para asegurar la horquilla al eje usé dos conos viejos de acero que me sobraron del paso 2, a los que soldé sendos trozos de varilla de hierro para convertirlos en (semi) mariposas.
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The safest way to attach the hitch to the bike is through a fork, not having to worry about any obstacles in the curves (there are one or more instructables about this). The fork I made of iron pipe for electrical installations of 5"/8 semi thick walls. I cut a piece slightly longer than I needed, I filled it with dry sand and bent U like. It flattened a little, but in a controlled manner.
In the middle of the U soldered a 5"/16 screw that holds the washer hitch. At arm holes where U enters the rear of the bike I reinforced with thick washers welded. To ensure the fork to the axis I used two old steel cones that were left over from step 2 me, which I soldered two separate pieces of iron rod to become (semi) butterflies.
En el medio de la U soldé un tornillo de 5"/16 que agarra la arandela del enganche. A los agujeros de los brazos la U donde entra el eje trasero de la bicicleta los reforcé con arandelas gruesas soldadas. Para asegurar la horquilla al eje usé dos conos viejos de acero que me sobraron del paso 2, a los que soldé sendos trozos de varilla de hierro para convertirlos en (semi) mariposas.
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The safest way to attach the hitch to the bike is through a fork, not having to worry about any obstacles in the curves (there are one or more instructables about this). The fork I made of iron pipe for electrical installations of 5"/8 semi thick walls. I cut a piece slightly longer than I needed, I filled it with dry sand and bent U like. It flattened a little, but in a controlled manner.
In the middle of the U soldered a 5"/16 screw that holds the washer hitch. At arm holes where U enters the rear of the bike I reinforced with thick washers welded. To ensure the fork to the axis I used two old steel cones that were left over from step 2 me, which I soldered two separate pieces of iron rod to become (semi) butterflies.
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