Hello,
on the week end I have been founded a small Rocking engine and, besides, a mistake has happened to me.
Because the piston is only one thin disc and forms with the piston rod a unity, the connecting rod bolt is led by a small drilling at the end of this piston. The gudgeon pins with 1.5 mm of diameter I have turned from a piece of Saint 37 and too exactly have probably worked a little bit. When I wanted to try tight fit, I could push the piston quite easily on the bolt, but all of a sudden the whole was steady. Before I had held the piston a few minutes in the hand and had warmed up him so. When I pushed then the colder bolt in the drilling, he shrank on and can be moved no more. With the attempt to separate both parts then I still tore off the bolt and had to produce thus both parts anew.
Edwin
on the week end I have been founded a small Rocking engine and, besides, a mistake has happened to me.
Because the piston is only one thin disc and forms with the piston rod a unity, the connecting rod bolt is led by a small drilling at the end of this piston. The gudgeon pins with 1.5 mm of diameter I have turned from a piece of Saint 37 and too exactly have probably worked a little bit. When I wanted to try tight fit, I could push the piston quite easily on the bolt, but all of a sudden the whole was steady. Before I had held the piston a few minutes in the hand and had warmed up him so. When I pushed then the colder bolt in the drilling, he shrank on and can be moved no more. With the attempt to separate both parts then I still tore off the bolt and had to produce thus both parts anew.
Edwin
