Search found 1702 matches

by rkcarguy
Fri Feb 25, 2022 6:15 pm
Forum: Live Steam
Topic: Piston Material
Replies: 25
Views: 4711

Re: Piston Material

Dick, Bill is right. The speed of which the O-ring slides in the bore far exceeds the rated linear surface speed of the specs on even the best high temp O-rings out there. They also make an X-ring, but while it has better specs they are still too low, and the edge of the X shape could catch on a por...
by rkcarguy
Thu Feb 24, 2022 12:50 pm
Forum: Live Steam
Topic: Piston Material
Replies: 25
Views: 4711

Re: Piston Material

Bill, I get that. I would be employing the same methods and materials across the valves as I would the pistons and sleeves, if I did it. I could also go with stainless pistons, and double up the rings as extra insurance against piston/wall contact. I've also got local contacts with shops that serve ...
by rkcarguy
Wed Feb 23, 2022 2:03 pm
Forum: Live Steam
Topic: Piston Material
Replies: 25
Views: 4711

Re: Piston Material

I posted before that I was looking at aluminum pistons inside bronze sleeve bearing bores, with high temp glass filled PTFE gapless rings. My main concern was corrosion, and I felt that this setup would be able to be used, parked for several days, and used again without having to drain and oil every...
by rkcarguy
Wed Feb 23, 2022 1:38 pm
Forum: Riding Scale Railroading
Topic: Locomotive built of wood
Replies: 17
Views: 3591

Re: Locomotive built of wood

the late Pete Eggink described building his GP 35 out of wood. http://www.calvertcentral.com/CC_2014_GP35.html Dave I considered this method for the body of mine, but it's just too wet here. I have metal shop access so I went with aluminum on a steel frame. Honestly if one was proficient (even if y...
by rkcarguy
Mon Feb 21, 2022 8:01 pm
Forum: Riding Scale Railroading
Topic: constructing electronics for semaphore signal?
Replies: 18
Views: 4712

Re: constructing electronics for semaphore signal?

Ah here it is from my older post: "I am using two SPDT relays, so there is two + positive outputs which are switched between by relay position. The at rest relay output powers the green light indicating the next block is clear. When the first relay is energized, indicating a train in the next block,...
by rkcarguy
Mon Feb 21, 2022 6:28 pm
Forum: Riding Scale Railroading
Topic: constructing electronics for semaphore signal?
Replies: 18
Views: 4712

Re: constructing electronics for semaphore signal?

Sounds good. Echoing the first response to this thread, make sure you isolate your Arduino. I've read of many problems for signal systems being affected by everything from nearby radio towers and power lines to lightning of course. My property is on a hill and I have at least one tree which was stru...
by rkcarguy
Mon Feb 21, 2022 2:53 pm
Forum: Live Steam
Topic: Piston Material
Replies: 25
Views: 4711

Re: Piston Material

Been kicking this around myself, for a build that is far in the future lol. I was thinking aluminum pistons, bronze sleeve cylinders, and hi-temp PTFE "notched" rings (literally zero blow by). One thing about aluminum is that one can use acid to remove alum deposits from cylinder walls without hurti...
by rkcarguy
Fri Jan 28, 2022 6:29 pm
Forum: Grand Scale Railroading
Topic: 12” gauge DRGW Inspired RR
Replies: 93
Views: 48715

Re: 12” gauge DRGW Inspired RR

Question for you. Did you end up drilling clearance holes through your flat bar bolsters? I haven’t drill my bolsters yet. I’ll take a look, and see what kinda clearance I have. I’m using 1”dia-two hole bearing housings. Although, on this gon I have already designed it for a 1”dia pin passing throu...
by rkcarguy
Fri Jan 28, 2022 6:03 pm
Forum: Grand Scale Railroading
Topic: Arizona Gandy Dancers
Replies: 54
Views: 9236

Re: Arizona Gandy Dancers

Will do! We actually have had a decent sunny yet cold week, but rain is returning later Saturday and maybe even snow next week. It doesn't help that it's only light from about 7:30am-5pm right now. I have to move part of my driveway as mitigation to get my final and occupancy, and will be grading th...
by rkcarguy
Fri Jan 28, 2022 5:46 pm
Forum: Grand Scale Railroading
Topic: Arizona Gandy Dancers
Replies: 54
Views: 9236

Re: Arizona Gandy Dancers

Hey Ryan, yep, Washington is pretty much a lost cause, st least in an area local to us. We have a little drama from time to time here also. But the park we are in has an established live steam club, and a public designation specifically for this type of activity. So moving Forward. Our volunteer gr...
by rkcarguy
Fri Jan 28, 2022 5:12 pm
Forum: Museums, Factories, Etc.
Topic: Arizona Grand Scale Railway Society
Replies: 7
Views: 4147

Re: Arizona Grand Scale Railway Society

I responded in the other post, I think to keep it such that you'll have interchange with other 15" tracks you should adhere to 15" gage standards regardless of scale. There are large dimensional differences in the wheel profiles between 3, 4, and 5" scale, one isn't going to work on the other. That ...
by rkcarguy
Fri Jan 28, 2022 5:00 pm
Forum: Grand Scale Railroading
Topic: Arizona Gandy Dancers
Replies: 54
Views: 9236

Re: Arizona Gandy Dancers

Looking good Glenn, it's nice to see things getting started already. Land use "politics" in WA for such things are not so great, too much money in every little postage stamp of property. Too bad nothing panned out locally. Regarding heat expansion, you can actually take the expansion rate of steel a...