Another Stuart Progress

[Mark_1984]

I've started building the Stuart Progress Oscillating Engine.

I started with the flywheel, which was a really nice casting. I machined all the dimensions by eye apart from the diameter. I've videoed the machining, but I forgot to take any still pics! Sorry. I'll try harder for the next update.

I held the flywheel in a 3 jaw chuck, on the inside of the rim which gave me a nice, very true running inside rim. The rest of the process was plain sailing.

 

[GreenTwin]

I like the looks of that engine a lot.
Very graceful design.
.

 

[Mark_1984]

Thanks. I do have a soft spot for the more authentic looking oscillating engines.
I have the Crosskill's Oscillating engine ready to start as the next project. That kit is available from Polly Model Engineering.

 

[Richard Hed]

I've started building the Stuart Progress Oscillating Engine.

I started with the flywheel, which was a really nice casting. I machined all the dimensions by eye apart from the diameter. I've videoed the machining, but I forgot to take any still pics! Sorry. I'll try harder for the next update.

I held the flywheel in a 3 jaw chuck, on the inside of the rim which gave me a nice, very true running inside rim. The rest of the process was plain sailing.

I've done that. Now I face the center, bore a centrer hole and place the endstock in the hole. Doesn't fly out.

 

[Mark_1984]

Brilliant idea! Gonna remember that for next time!

 

[Propforward]

Ah ha! Found your build thread. Enjoyed the video the other day.

 

[Mark_1984]

Ah ha! Found your build thread. Enjoyed the video the other day.

Thanks! Glad you enjoyed the video!

 

[Propforward]

Yes it will be a very enjoyable build. Once again thanks for the channel shout out - always appreciated.

 

[Mark_1984]

I've completed the main frame of the Progress engine now. This was fairly straight forward once I'd work out a sensible order of operations and how to hold the part. Here's the video.