Search found 811 matches

by Soot n' Cinders
Fri Dec 06, 2019 10:49 am
Forum: Live Steam
Topic: Kit Iron Castings
Replies: 14
Views: 460

Re: Kit Iron Castings

For the small equipment like we have, making things like wheels and cylinders our of grey iron has never been an issue that I've seen. There have been a few cases of chipped flanges, but the ones Ive seen were usually pretty thin to begin with. I have grey iron drivers on my shay and so far they don...
by Soot n' Cinders
Fri Nov 29, 2019 2:21 pm
Forum: Live Steam
Topic: Possibility for a 2.5" scale dynamo
Replies: 12
Views: 665

Re: Possibility for a 2.5" scale dynamo

Hallo Soot n' Cinders, Your idea using a simple gear wheel instead of a sophisticated turbine blade wheel to me seems o.k.! Makes just a small difference using the same nozzle. Choose a wheel made of aluminium of the biggest diameter fitting into your housing. That cheap DC-motor of your choice is ...
by Soot n' Cinders
Fri Nov 29, 2019 11:49 am
Forum: Live Steam
Topic: Possibility for a 2.5" scale dynamo
Replies: 12
Views: 665

Re: Possibility for a 2.5" scale dynamo

Greg_Lewis wrote:
Fri Nov 29, 2019 11:48 am
Please keep us posted — how about a build diary?
I will if I venture into this. Running out of free time at the moment.
by Soot n' Cinders
Fri Nov 29, 2019 11:44 am
Forum: Live Steam
Topic: Possibility for a 2.5" scale dynamo
Replies: 12
Views: 665

Re: Possibility for a 2.5" scale dynamo

I figured I may give it a shot since the generator is only $25. Would have to see if 3000rpm is fast enough to generate enough torque to make 15w of electricity. And just to be clear, I wouldnt use a true turbine blade. Too difficult to make. What I would use is a paddle wheel turbine, or a vane mot...
by Soot n' Cinders
Thu Nov 28, 2019 8:35 pm
Forum: Live Steam
Topic: Possibility for a 2.5" scale dynamo
Replies: 12
Views: 665

Possibility for a 2.5" scale dynamo

Alright guys, time to tell me how crazy I am! Looking around online I stumbled across a 15w generator meant for a small wind turbine and wondered if it would also work for a small turbo generator. No load voltage is 12v at 1000rpm, but it can sustain 12v at 15w with higher RPMs, the spec sheet says ...
by Soot n' Cinders
Thu Nov 28, 2019 12:02 pm
Forum: Live Steam
Topic: Which pressure gauge to use?
Replies: 27
Views: 1596

Re: Which pressure gauge to use?

NP317 wrote:
Thu Nov 28, 2019 11:37 am
That extra petticoat makes sense. On full-sized logging locomotives I have worked on, some had "annular venetian blind" petticoats:
Several tapered rings stacked together. An interesting setup for oil burners.
RussN
Like this?
by Soot n' Cinders
Thu Nov 28, 2019 12:00 pm
Forum: Live Steam
Topic: Oil burning boiler mods
Replies: 28
Views: 5764

Re: Oil burning boiler mods

If going with a dome throttle, I've been very pleased with the arrangement I came up with. I have a globe valve with the threads on the stem removed so it operates as a push-pull valve. The valve is centered vertically between the top of the dome and where the throttle rod comes through so there is ...
by Soot n' Cinders
Sat Nov 23, 2019 10:53 am
Forum: Live Steam
Topic: Larry Fisher
Replies: 7
Views: 1042

Re: Larry Fisher

My condolences to his family! I always enjoyed seeing his work and was looking forward to many of the beautiful pieces of locomotive jewelry he was developing. He will be missed
by Soot n' Cinders
Tue Nov 19, 2019 10:30 pm
Forum: Live Steam
Topic: Verifying Blast nozzle height
Replies: 28
Views: 1522

Re: Verifying Blast nozzle height

Hmmm, One more question has come up regarding round blower nozzles with multiple holes drilled in the ring. What advantage do they offer over the traditional one nozzle blower? Also, with multiple blower oriface, does this type use more steam than single nozzles? Hence perhaps be less efficient in ...
by Soot n' Cinders
Tue Nov 19, 2019 10:26 pm
Forum: Live Steam
Topic: Crank Pin Alignment
Replies: 22
Views: 1214

Re: Crank Pin Alignment

I agree, keyed axles are the way to go! Broach both wheels for that axle at the same time with a dowel in the crankpin holes so the quartering is true. Also, use woodruff keys. Ive seen square keys work loose and start eating into the back side of the siderods.
by Soot n' Cinders
Tue Nov 19, 2019 4:52 pm
Forum: Live Steam
Topic: Verifying Blast nozzle height
Replies: 28
Views: 1522

Re: Verifying Blast nozzle height

Hello All, thanks for your comments on this. In answer to your questions, here are a couple of data points: - my working pressure is 143 PSI. - existing oriface size is .238” for each nozzle, .476” total; (1/7th Cylinder dia rule should be .358” ) - nozzles are offset to the rear and left of stack ...
by Soot n' Cinders
Tue Nov 19, 2019 12:24 am
Forum: Build Log
Topic: Building the 2.5" Scale Shay
Replies: 834
Views: 171659

Re: Building the 2.5" Scale Shay

The second, and biggest improvement was changing the blast nozzle. I started with 9/32, which was found to be too small. The exhaust went from beats to a roar going up grades and back pressure was robbing the engine of power. So I bought a brass pipe plug to play with while the stainless steel one ...