Mystery steam engine

[chris123]

Have to do it t morrow
Chris

 

[Charles Lamont]

Actually, looking back through the thread, I think you have given us quite a few of those dimensions already.

 

[chris123]

Ok Hi charles
The first part

 

[chris123]

Actually, looking back through the thread, I think you have given us quite a few of those dimensions already.

Ok Hi charles
The first part

 

[chris123]

See how crooked the edge is

 

[chris123]

The valve with is 29.512

 

[Charles Lamont]

Chris, do you want to do everything on this engine properly from the start, or just do what is necessary to see if the engine can be made to run and then refine it later? Do you have comressed air in your workshop?

 

[chris123]

Chris, do you want to do everything on this engine properly from the start, or just do what is necessary to see if the engine can be made to run and then refine it later? Do you have comressed air in your workshop?

Yes i do
And if im on it i getting it as good as i can
Possibly
Also going for steam
Started already.
Got 2,5 mm thick copperpipe and….
Chris

 

[Charles Lamont]

This is my suggested outline list of jobs:

1. Find out why the engine is stiff and put it right. This will probably mean taking the connecting rods and valve gear off. You should be able to unbolt the eccentric strap and big end halves, making notes of what goes where. Probably also need to check the main bearings.
2. Possibly make or adapt a temporary flywheel so you can turn the engine by hand without the mole grips
3. Resolve the interference of the valve gear pins and make sufficient simple temporary parts to make the reversing gear functional
4. Make the slide valve and its driving arrangement
5. Make an inlet pipe and flange with air line adaptor
6. Make the missing part for the valve chest cover (probably a 'tail rod guide')
7. Check the piston rings
8. Plug the drain holes
9. Put it together and try just the LP side on air and adjust the LP timing (the HP piston valve is not needed for this)
10. Make the HP piston valve
11. Try it again and adjust the HP valve timing
12. Make proper posh parts for the reversing gear
13. Make drain cocks
14. Lag the cylinder
15. Cosmetic treatment?

Designing the valves to be adjustable from the top, and without modifying the valve rods, is a bit of a poser. I think I am on the right track with the slide valve but have not done much on the piston valve yet. I also have some ideas for the reversing linkage.

How are the valve rods fitted at the bottom end?

 

[chris123]

Hi charles
I start to your instruction
The rods are just threaded in
Not eaven a locking nut
Clean up crank shaft and make flywheel
What diameter and thickness u got in mind?
I mark the pieces and make pics
So i assemble it correct again
Regards chris

 

[Charles Lamont]

Suggestions, not instructions! I am not taking responsibility for what you get up to

I will have a think about the flywheel. Do you want to make the finished article or temporary?

 

[chris123]

Suggestions, not instructions! I am not taking responsibility for what you get up to

I will have a think about the flywheel. Do you want to make the finished article or temporary?

Suggestions, not instructions! I am not taking responsibility for what you get up to

I will have a think about the flywheel. Do you want to make the finished article or temporary?

Of course charles
No responsibility bud i will do as suggested
Its the experience witch i havent got
If u got a final solution for the flywheel
I will machine it
If u think temporary is better i also do it
Bud would prefer final
Thank you
Chris

 

[chris123]

Valve gear

 

[chris123]

Valve gear

I think the valve gear is the problem
It needs to be taken appart
Chris

 

[chris123]

Valve gear

The problem is here
Very stiff
Am i take it appart and polish it??
Chris

 

[chris123]

I think the valve gear is the problem
It needs to be taken appart
Chris

Hi charles
Look at that

 

[GreenTwin]

I guess it goes without saying, but I suggest you be very methodical, and troubleshoot one problem at a time.
In the old days, I was prone to just taking things all apart, and I know from experience that just makes for a big pile of parts, and a a bucket full of nuts and bolts.
Be mindful that things may fit in only one location, and in one orientation.
Keep up with that carefully.

Edit:
LOL, you just posted pictures with numbered parts a few seconds before I posted.
You are on the right path for sure.

.

 

[chris123]

I guess it goes without saying, but I suggest you be very methodical, and troubleshoot one problem at a time.
In the old days, I was prone to just taking things all apart, and I know from experience that just makes for a big pile of parts, and a a bucket full of nuts and bolts.
Be mindeful that things may fit in only one location, and in one orientation.
Keep up with that carefully.

Edit:
LOL, you just posted pictures with numbered parts a few seconds before I posted.

.

Hi green twin
I only take 1 thing appart make pics clean polish it and back toghther then next thing
Apart …..
No mix ups
Im very careful
Chris

 

[Charles Lamont]

It all looks very nicely made with a lot of details that are unusual at this size. While you have the valve gear dismantled you could have a look at the inteference problem. Looks as though you can separate the two curved expansion links (which are likely to be hardened) if the fixing bolts at the ends have not been riveted over. Then we can try to work out how the pins are fitted, because the long ones need replacing or modifying. They may be hardened too. Could you measure the pins? I probably don't need to say this, but just in case - if you are polishing, go gently and keep the crisp edges - don't go anywhere near a buffing wheel. Some people would say the patina should be preserved.

 

[chris123]

It all looks very nicely made with a lot of details that are unusual at this size. While you have the valve gear dismantled you could have a look at the inteference problem. Looks as though you can separate the two curved expansion links (which are likely to be hardened) if the fixing bolts at the ends have not been riveted over. Then we can try to work out how the pins are fitted, because the long ones need replacing or modifying. They may be hardened too. Could you measure the pins? I probably don't need to say this, but just in case - if you are polishing, go gently and keep the crisp edges - don't go anywhere near a buffing wheel. Some people would say the patina should be preserved.

Dont worry im not going over board
Bud no rust and ****
You know …
Chris
Look at the pins
Brazed