Author Topic: Monitor Build  (Read 2476 times)

Offline flopearedmule

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Re: Monitor Build
« Reply #30 on: January 29, 2019, 01:06:25 AM »
The shaft that holds the arms was next.  I had a piece of 7/8" aluminum, so I decided to bore out a Piece of polished tool steel to make the bearing surfaces.
a gob of green Loctite and they will never move.

Offline flopearedmule

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Re: Monitor Build
« Reply #31 on: January 29, 2019, 01:13:39 AM »
That's all for now.  Coming up next is probably the cylinder. I'm going to use Aluminum and sleeve it with a piece of smooth bore stainless I bought from McMaster Carr, and a piece of bronze to inlay for the steam ports.


Offline Johnmcc69

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Re: Monitor Build
« Reply #32 on: January 29, 2019, 01:24:16 AM »
Looking good! The arms look great!

 John

Offline flopearedmule

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Re: Monitor Build
« Reply #33 on: February 05, 2019, 01:29:12 AM »
Looking good! The arms look great!

 John

Thanks John!


Had a few hours this weekend, worked on the Rods. 
Found a piece of bronze left over from something else.  I forgot to take pictures of the top half of the rod, but i got some of the bottom.
The high jaws I made 20 years ago come in handy sometimes.

Offline flopearedmule

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Re: Monitor Build
« Reply #34 on: February 05, 2019, 01:40:50 AM »
I'm not sure what you call these guys, but I got started on them after work today.
Hopefully I can finish them tomorrow.

Offline crueby

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Re: Monitor Build
« Reply #35 on: February 05, 2019, 01:49:08 AM »
Yokes? Clevises? Y-thingies? Whatever they are called, look great!
 :popcorn: :popcorn: :popcorn:

Offline flopearedmule

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Re: Monitor Build
« Reply #36 on: February 05, 2019, 02:19:10 AM »
Yokes? Clevises? Y-thingies? Whatever they are called, look great!
 :popcorn: :popcorn: :popcorn:

I like it....Y-thingies    :cheers:

Offline flopearedmule

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Re: Monitor Build
« Reply #37 on: February 05, 2019, 02:24:44 AM »
Not sure if Stew is one of my peeps??  Dad has pretty much finished Stew's design of the  overcrank engine.  I was home and helped him get it timed to run for the first time.
Question for you guys.  The valves on both cylinders start to open around 20 degrees past top dead center.  Do you guys think it would be ok to shave some off each side of the valve?  I'm thinking the ports need to open closer to top dead center, like maybe around 5 degrees past TDC?  It runs, but it takes a little more air than the rest of his steam engines.

« Last Edit: February 05, 2019, 02:45:06 AM by flopearedmule »

Offline crueby

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Re: Monitor Build
« Reply #38 on: February 05, 2019, 02:46:40 AM »
If its opening 20 degrees late on both directions, then you should be able to shave off a bit on both ends. If its 20 at tdc and something else after bdc, then the timing needs to be adjusted first. It wont take much to change it, but it would help. Also check when the exhaust closes in each direction, too ealy and it will fight the piston, too late and you cant make the steam intake earlier.

Offline b.lindsey

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Re: Monitor Build
« Reply #39 on: February 05, 2019, 02:58:44 AM »
Still following along as well and the y-thingies do look good!!
Bill

Offline flopearedmule

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Re: Monitor Build
« Reply #40 on: February 05, 2019, 03:04:44 AM »
If its opening 20 degrees late on both directions, then you should be able to shave off a bit on both ends. If its 20 at tdc and something else after bdc, then the timing needs to be adjusted first. It wont take much to change it, but it would help. Also check when the exhaust closes in each direction, too ealy and it will fight the piston, too late and you cant make the steam intake earlier.

I never thought to check the exhaust ports.  I'll measure it up the next time I'm home.  thanks

Online steamer

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Re: Monitor Build
« Reply #41 on: February 05, 2019, 03:08:45 AM »
Do make sure you have equal valve travel either side of the exhaust port.   then it's just timing.

I start with the lead.   I just crack the valve at TDC, That should be a good starting point for Angle of advance...

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline flopearedmule

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Re: Monitor Build
« Reply #42 on: February 06, 2019, 03:02:03 AM »
Got the Y-Thingies done tonight.  Next up is the cylinders.  Here's a picture of the smooth bore seamless stainless tube I will glue in with Loctite.
Maybe this weekend I can get started.
« Last Edit: February 06, 2019, 03:36:38 AM by flopearedmule »

Offline crueby

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Re: Monitor Build
« Reply #43 on: February 06, 2019, 03:22:17 AM »
Is that tube smooth and even enough to use as is, or will it still need boring or honing?

Offline flopearedmule

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Re: Monitor Build
« Reply #44 on: February 06, 2019, 03:36:03 AM »
I didn't measure it yet, but I hope its good enough to use as is.  Stay tuned, I'll let you know.