Author Topic: Flyboy Jim's PM Research #5  (Read 5813 times)

Offline Ye-Ole Steam Dude

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Re: Flyboy Jim's PM Research #5
« Reply #120 on: December 17, 2019, 06:32:43 PM »
Hello Jim,

Coming along very nicely  :ThumbsUp:

Have a great day,
Thomas

Offline bent

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Re: Flyboy Jim's PM Research #5
« Reply #121 on: December 18, 2019, 04:45:54 PM »
 :ThumbsUp: :popcorn:

Online Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #122 on: January 06, 2020, 02:51:16 AM »
Progress got even slower over the Holidays, but did get a little done.

Mounted the Cylinder in my vice and milled the face of the steam chest flat.





Then milled out the Valve Chamber



Next up will be the milling of the Port Holes.

Jim

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"You can do small things on big machines, but you can do small things on small machines".

Online propforward

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Re: Flyboy Jim's PM Research #5
« Reply #123 on: January 06, 2020, 02:57:49 AM »
Lovely work Jim. Any issues with taking a fly cutter across the opening in the steam chest? I've never used one before, wondering if there are any pitfalls to be aware of?
Stuart

Online Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #124 on: January 06, 2020, 03:20:33 AM »
Lovely work Jim. Any issues with taking a fly cutter across the opening in the steam chest? I've never used one before, wondering if there are any pitfalls to be aware of?

No problems at all Stuart. But that said....... I take pretty light cuts. 

Jim
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Online Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #125 on: January 13, 2020, 02:41:19 AM »
Got a little time in today and got the port holes milled in the steam chest area.



Then located and drilled the holes for the Steam Chest Cover.



Then tapped 2-56 as called out.



Next up is the Steam Chest Cover.

Jim
Sherline 4400 Lathe
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"You can do small things on big machines, but you can do small things on small machines".

Online propforward

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Re: Flyboy Jim's PM Research #5
« Reply #126 on: January 13, 2020, 05:55:52 PM »
Nice work Jim, the engine is coming along very well indeed.
Stuart

Online propforward

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Re: Flyboy Jim's PM Research #5
« Reply #127 on: January 13, 2020, 05:59:05 PM »
Then there's those of us, like myself, that have 1 years experience, 10 times. It's actually worse in my case, in that I only have 1 years experience, 3 times!  :-\ 

This really resonates with me. For what it's worth, I think the quality of your work exceeds what you describe above. Nice job all round. I'm thinking of buying one of these engines myself, it's a very nice engine and a great build.
Stuart

Online crueby

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Re: Flyboy Jim's PM Research #5
« Reply #128 on: January 13, 2020, 08:09:39 PM »
Looking good Jim!   :popcorn:

Online Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #129 on: January 14, 2020, 02:48:35 AM »
Thanks Stuart and Chris.

I got some more time in on my project today.............. 2 days in a row!  :whoohoo:

Worked on the Steam Chest Cover.

Cut it off the spru (?) and milled the sides even.



Located and drilled the mounting holes.



I think some studs and nuts would look good here.



Jim
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"You can do small things on big machines, but you can do small things on small machines".

Online Kim

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Re: Flyboy Jim's PM Research #5
« Reply #130 on: January 14, 2020, 05:09:05 AM »
You're really moving along there, Jim!  :popcorn:

Did you have to face the other side of the steam chest cover too?  Just seems like the cast finish wouldn't really give you a good seal for the steam chest.

And yes, studs and nuts would definitely look good there!
Kim

Offline b.lindsey

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Re: Flyboy Jim's PM Research #5
« Reply #131 on: January 14, 2020, 01:54:55 PM »
Still following along here Jim and enjoying your progress.

Bill

Online Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #132 on: January 14, 2020, 02:14:17 PM »
Thanks Kim and Bill.

Kim............ the back of the casting was quite flat and so far all I've done is sand it on my surface plate. It may need more sanding or possibly fly cutting. The same may also apply to the cylinder head I did earlier. I noticed that some gasket material is included in the kit, so that might suffice. It'll only be running on air.

Bill............your build thread has really been helpful.

Jim
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Online Flyboy Jim

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Re: Flyboy Jim's PM Research #5
« Reply #133 on: January 18, 2020, 03:04:35 AM »
I decided that a mandrel would be handy for the next few steps, so machined one. Mounted the cylinder on it and mounted the chuck on the RT. Located, drilled and threaded the hole for the exhaust outlet.





While I had it set up, I centered the RT and milled off the part of the cylinder I couldn't turn when I had the cylinder mounted in the lathe a while back.



Also located, drilled and tapped the holes for mounting the Cylinder Head.







Jim
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"You can do small things on big machines, but you can do small things on small machines".

Online propforward

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Re: Flyboy Jim's PM Research #5
« Reply #134 on: January 18, 2020, 03:14:08 AM »
More great work - itís coming on very nicely!

I like the mandrel for holding and centering. Nice idea.
Stuart