My ongoing Stuart steam engine project

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My ongoing Stuart steam engine project

This topic has 12 replies, 6 voices, and was last updated 7 April 2016 at 07:41 by Anders.B.

Viewing 13 posts - 1 through 13 (of 13 total)

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27 March 2016 at 12:56 #231915
Anders.B
Participant
@anders-b
Hi I am currently building a Stuart Twin Launch steam engine. I am about half way done and thought it would be fun to share my progress so far.

**LINK**

If this link doesn’t work try to search for my channel name “anders workshop” on YouTube

Anders
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27 March 2016 at 12:56 #31125
Anders.B
Participant
@anders-b
27 March 2016 at 13:59 #231929
Jeff Dayman
Participant
@jeffdayman43397
It's looking good Anders. JD
27 March 2016 at 14:21 #231932
Nick_G
Participant
@nick_g
.

That is as Jeff says looking good.

I like the Stuart twin. Just wish they did a slightly larger version say 1 1/2 x 1 1/2 ish. Something like a twin No.9

How long have you been on the project Anders.?

Regards, Nick
27 March 2016 at 16:02 #231935
Ed Duffner
Participant
@edduffner79357
Very nice Anders!

I was just watching the video and it helped to take my mind off a few real life worries for a few minutes, quite theraputic, thank you. I hope I can build one of these types of engines in the future.

Ed.
1 April 2016 at 18:25 #232848
Anders.B
Participant
@anders-b
Hi everyone, thanks for the positive feedback. Sorry for the late answer- had a really busy week (schoolwork). Nick_G I started this project in September last year. If you have a CAD-program you can always scale the drawings. But then you will have to fabricate all parts. I have just drilled the finale holes in the cylinder-block (62 holes in total)

Anders
5 April 2016 at 18:41 #233448
Anders.B
Participant
@anders-b
Hi

I am currently working on the pistons and I wonder if it is necessary to fit the piston rings?

I have not made the groves for the rings yet.

Does it rally make any big difference with or without rings?

Anders
5 April 2016 at 18:47 #233449
Nick_G
Participant
@nick_g
.

It does really matter IMHO yes.

You would get away with it turning over for demo purposes so long as everything else was very loose and free. Probably too loose and free really. – You would also waste a lot of air.

Do you have an issue with the creation of the piston ring grooves. If so what help do you need.?

Nick
6 April 2016 at 18:29 #233561
Anders.B
Participant
@anders-b
Hi

Ok Nick_G I will fit the piston rings.

I have a question, the piston ring is 1,62 mm wide. According to the drawing there are two rings in the same grove. How much wider shall I make the grove?

The rings are very thin, is there any trick to mount them without braking them?

Anders
6 April 2016 at 20:20 #233576
JasonB
Moderator
@jasonb
You don't want the groove too much wider than the rings, maybe 0.05mm more than the two so something like 3.30mm total. The groove can be a bit deeper than the depth of the rings say 0.10 to 0.15mm. If you have them too loose you can get a knock at TDC and BDC.

As Nick says the engine should run without rings but you will have some air getting past the piston so your compressor will be running more often or if using steam you will have to produce more steam. If you then apply any form of load you will get more air/steam escaping. I usually test run my engines without rings, gland packing or gaskets and they seem to go OK.
6 April 2016 at 21:57 #233598
Neil Wyatt
Moderator
@neilwyatt
Posted by Anders.B on 01/04/2016 18:25:11:

Hi everyone, thanks for the positive feedback. Sorry for the late answer- had a really busy week (schoolwork). Nick_G I started this project in September last year. If you have a CAD-program you can always scale the drawings. But then you will have to fabricate all parts. I have just drilled the finale holes in the cylinder-block (62 holes in total)

Anders

63 – don't forget the big one through the middle

Neil
7 April 2016 at 07:19 #233616
JasonB
Moderator
@jasonb
64 Neil, its a twin. Must pay more attention
7 April 2016 at 07:41 #233618
Anders.B
Participant
@anders-b
Hi

Thanks JasonB I will start with the groove today.

Neil….of course, how could I forget the big hole in the middle…… I will fix that, and when I am at it I can drill some random hole, glue some steel bars and sell it as modern art, earn a million dollar, retire at age 18 and spend the rest of my life in the workshop..

Anders
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