Author Topic: JC attempts the MEM Corliss  (Read 26882 times)

Online Kim

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Re: JC attempts the MEM Corliss
« Reply #195 on: March 14, 2022, 02:16:53 PM »
Excellent!  Your Corliss runs very well!  :ThumbsUp: :popcorn:

Kim

Online crueby

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Re: JC attempts the MEM Corliss
« Reply #196 on: March 14, 2022, 02:37:23 PM »
Terrific!

Offline RReid

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Re: JC attempts the MEM Corliss
« Reply #197 on: March 14, 2022, 03:03:07 PM »
Congratulations on a job well done! The Corliss valve dance is mesmerizing!  :ThumbsUp: :cheers:
Regards,
Ron

Offline Don1966

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Re: JC attempts the MEM Corliss
« Reply #198 on: March 14, 2022, 04:53:07 PM »
Awesome results…. :Love:


 :cheers:
Don

Offline propforward

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Re: JC attempts the MEM Corliss
« Reply #199 on: March 14, 2022, 05:55:01 PM »
That is a really well made and smooth running engine.
Stuart

Forging ahead regardless.

Offline Roger B

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Re: JC attempts the MEM Corliss
« Reply #200 on: March 21, 2022, 06:48:44 PM »
Excellent  :praise2:  :praise2: :wine1:
Best regards

Roger

Offline steam guy willy

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Re: JC attempts the MEM Corliss
« Reply #201 on: April 02, 2022, 03:34:12 AM »
Hi , clever idea using the glass fuses  for the oilers. I will remember that and I have a large quantity of these that I have been collecting over the years   :NotWorthy: :praise2:

Willy

Offline JCvdW

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Re: JC attempts the MEM Corliss
« Reply #202 on: April 10, 2022, 10:52:36 AM »
In preparation for painting, I am taking my time developing a process that will give acceptable results. The scrapped cylinder block serves as a test piece. Since I now have a small air compressor, I want to spray paint the model.

I started off spraying 2K automative paint with an airbrush, but found the airbrush too small to lay down an even wet coat. A touch-up paint gun gives better results, and I am slowly starting to get acceptable results.



An etch primer is followed by three coats of 2K gloss base coat, with the paint reduced 50/50 with thinners. It is left 48 hours to dry, and then wet sanded with home made sanding sticks, with grits from 400 to 2000. This is followed by hand polishing with an automotive rubbing compound. I found that polishing with a Dremel easily damage the paint on the edges of the cylinder block.



Next step is to do the same test on a scrapped valve disk hub, to see how the sanding and polishing goes on round surfaces.



There is no planet B ...

Offline JCvdW

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Re: JC attempts the MEM Corliss
« Reply #203 on: May 20, 2022, 06:14:21 PM »
After lots of trial and error I finally have a satisfactory paint finish.

What I have learned using 2K automative paint (noted here for my own future reference):

1. Use a touch-up spray gun, not an airbrush.The airbrush results in too much overspray. Set the spray pattern to be as concentrated as possible.
2. Take all necessary safety precautions. 2K paint is poisonous!
3. Clean all surfaces thoroughly with a pre-cleaner that does not leave any residue, such as benzine (not acetone).
4. Mask with good quality masking tape. Remove all masking tape residue where tape is removed. Take particular care when masking right up to the edge of a surface, such as for the valve bonnets. The edges to be painted must be perfectly clean for maximum paint adhesion.
5. Wear latex gloves when handling cleaned parts and also while masking.
6. Dilute etch primer 50/50 with thinners for spraying.
7. Allow ample time for etch primer to cure.
8. Dilute 2K colour coat 50 (paint and hardener) / 50 thinners.
9. Spray at least three coats, allowing the required cure time between coats as per paint instructions.
10. When spraying, hold the parts to be sprayed up in the air, away from any dusty surface.
11. Allow at least 48 hours for paint to cure.
12. Rub all painted surfaces with ultra fine steel wool to remove any dust particles and/or orange peel.
13. Be very careful with sanding sticks. It removes paint on small surfaces very quickly.
14. Spray two more colour coats and cure for 48 hours.
15. Lightly rub all surfaces again with steel wool to obtain a smooth surface.
16. Polish all paint surfaces by hand with a lint free cloth, using an automative polishing or rubbing compound.
17. Use gloss clear coat to protect metal surfaces not receiving a colour coat, such as the fly wheel rim. Rub the gloss coat with steel wool for a semi-gloss finish, or polish with rubbing compound for a high gloss finish.



And everything back together again:



The very last bit of work on the engine was to secure the small brass oiler caps on top of the glass tubes, otherwise they will disappear very quickly.

The best solution I could find was to punch out small pieces of double sided tape, normally used to mount mirrors against a wall. The tape is glued to the cap, and fits tightly inside the glass oiler tube.







And that concludes the build!
There is no planet B ...

Offline vcutajar

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Re: JC attempts the MEM Corliss
« Reply #204 on: May 20, 2022, 08:39:28 PM »
Enjoyed following your build JC.  Brought back nice memories.

Vince

Offline Admiral_dk

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Re: JC attempts the MEM Corliss
« Reply #205 on: May 20, 2022, 09:17:55 PM »
Thank you for the recap and useful tidbits  :cheers:

Per

Offline lennypeters

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Re: JC attempts the MEM Corliss
« Reply #206 on: June 11, 2022, 03:11:04 PM »
Nice work. Sorry if it has been covered before but what are you using for a milling machine?

Offline JCvdW

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Re: JC attempts the MEM Corliss
« Reply #207 on: June 11, 2022, 06:23:28 PM »
Nice work. Sorry if it has been covered before but what are you using for a milling machine?

I have a Chinese RF45 clone, with an X-axis power feed I made, as described here: https://www.modelenginemaker.com/index.php/topic,10327.msg235425.html#msg235425
There is no planet B ...

Offline kvom

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Re: JC attempts the MEM Corliss
« Reply #208 on: June 12, 2022, 02:38:53 PM »
Well done  :ThumbsUp:

Offline warrenmaker

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Re: JC attempts the MEM Corliss
« Reply #209 on: July 21, 2022, 12:39:58 PM »
I am speechless, what a master piece,!!!    :praise2: :praise2:
I noticed throughout your build you were using plans that included 3 views etc. I have looked high and low for these in the thread but could not find them. Would you be so kind to link to them. Thank you kindly.

 

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