Well, after a couple of setbacks with the Robinson, I decided to have a break and go for something very simple and use up some of my surplus aluminium until I could get my head round the main project once again.
What could be simpler than McCabe's Jingle Bell motor? That was my 'inspiration'.
The angles match the swing of the cylinder and I buried the crank disk instead of cutting half the stand thickness away. To get equal radii on the curves, I used a modification to the usual filing button technique.
The crankshaft bearing has been extended from the norm and projects about 3/8" into the flywheel, hence the cone to accommodate the extension of the bearing and shaft. In deference to the Bling Brigade, I gave the edges a little bit of a polish but left the large flat surfaces with a 000 wire wool finish, but this does not show up in the pictures.
This is the first oscillating engine I have made and I am very pleased with the way it performs.
Hopefully after this little distraction, I can get back to the Robinson with a bit more enthusiasm and fewer mistakes.
Dave
The Emerald Isle
What could be simpler than McCabe's Jingle Bell motor? That was my 'inspiration'.
The angles match the swing of the cylinder and I buried the crank disk instead of cutting half the stand thickness away. To get equal radii on the curves, I used a modification to the usual filing button technique.
The crankshaft bearing has been extended from the norm and projects about 3/8" into the flywheel, hence the cone to accommodate the extension of the bearing and shaft. In deference to the Bling Brigade, I gave the edges a little bit of a polish but left the large flat surfaces with a 000 wire wool finish, but this does not show up in the pictures.
This is the first oscillating engine I have made and I am very pleased with the way it performs.
Hopefully after this little distraction, I can get back to the Robinson with a bit more enthusiasm and fewer mistakes.
Dave
The Emerald Isle
