Search found 847 matches

by Mike Rometer
Sun Nov 29, 2020 9:28 pm
Forum: Technical - Engines and Boilers
Topic: And Now for the Twin
Replies: 96
Views: 38641

Re: And Now for the Twin

dampfspieler wrote:
Sun Nov 29, 2020 7:18 pm
Hello Mike,

will you also fit a gunmetal sliding plate inside the crossheads?

Best Dietrich
Yes , Dietrich, I left space under the slidebar for a 'slipper', yet to be completed. The top coverplate is hard brass.
by Mike Rometer
Sun Nov 29, 2020 6:42 pm
Forum: Technical - Engines and Boilers
Topic: Con-rods and length
Replies: 50
Views: 11210

Re: Con-rods and length

Russ, my understanding is that pressing against the slide bar in that direction is more rigid (supported) which will to some extent depend on the design. You will be using forward much more than reverse. With I.C. engines they move the crank slightly to one side to bring the con-rod more verticle un...
by Mike Rometer
Sun Nov 29, 2020 4:38 pm
Forum: Technical - Engines and Boilers
Topic: And Now for the Twin
Replies: 96
Views: 38641

Re: And Now for the Twin

Late Sunday afternoon, definitely past 'beer' o'clock, so I've quit for the day. Progress has been satisfying. I reduced the bosses on the bottom covers, no point in carting about more weight than required. Cyl Cover(28) (600 x 450).jpg I've finished off the cross-heads. Crossheads (8) (600 x 450).j...
by Mike Rometer
Sat Nov 28, 2020 8:42 pm
Forum: Technical - Engines and Boilers
Topic: Con-rods and length
Replies: 50
Views: 11210

Re: Con-rods and length

From the lack of response I assume not then. I shall put the feed and exhaust to the thrust (slide) side and leaving only the drain-cocks to the other.
by Mike Rometer
Wed Nov 25, 2020 4:35 pm
Forum: Technical - Engines and Boilers
Topic: Con-rods and length
Replies: 50
Views: 11210

Re: Con-rods and length

A passing thought. Common usage and convention says that the thrust stroke in forward gear should push the cross-head onto the slide, thereby determining which side they go. Fine, there is sound mechanical logic in that, but is there any convention which side the feed and/or exhaust should issue, or...
by Mike Rometer
Wed Nov 25, 2020 3:51 pm
Forum: Technical - Engines and Boilers
Topic: digital steam engine indicator
Replies: 89
Views: 54385

Re: digital steam engine indicator

Without a doubt.
by Mike Rometer
Tue Nov 24, 2020 4:16 pm
Forum: Technical - Engines and Boilers
Topic: And Now for the Twin
Replies: 96
Views: 38641

Re: And Now for the Twin

I love the look of freshly machined grey cast iron. It'll be a wonderful engine. Ha ha! Yes it's one material I find it difficult NOT to get a finish on. A little done today, not really worth the reporting, all the bolts (x12) for the Cross-head caps have been cut and fitted, and material preped fo...
by Mike Rometer
Mon Nov 23, 2020 11:10 pm
Forum: Technical - Engines and Boilers
Topic: digital steam engine indicator
Replies: 89
Views: 54385

Re: digital steam engine indicator

I think you're safe. It's all about the horse, and they do come in different sizes, even Watt got caught by that and he reputedly devised the figure. I think really it's about having a standard.
by Mike Rometer
Mon Nov 23, 2020 10:42 pm
Forum: Technical - Engines and Boilers
Topic: digital steam engine indicator
Replies: 89
Views: 54385

Re: digital steam engine indicator

I was taught PLAN/33000 for HP some 50 odd years ago. I've never heard it suggested that it was "interfered" with. Does anybody know different? You do need to make sure you allow for double acting cylinders. Wiki says that 33,000 is rounded up from 32,572.
by Mike Rometer
Mon Nov 23, 2020 9:30 pm
Forum: Technical - Engines and Boilers
Topic: digital steam engine indicator
Replies: 89
Views: 54385

Re: digital steam engine indicator

Well done! I think even i can understand that.

It's always great to finish a project, though it can sometimes leave a vacuum - 'til the next one comes along!