Author Topic: Coventry by Roy Ozouf  (Read 6486 times)

Offline flopearedmule

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Coventry by Roy Ozouf
« on: January 10, 2018, 02:37:55 AM »
Hi all,
I have been snooping around on and off for awhile now.  I have a Dad that has built quite a few steam engines, shows them at various shows.  I have  helped him build quite a few parts for them. I decided to build one for myself.  I watched a VCR tape with the old man awhile ago, and saw an interesting Steam Engine that Oscillates with a slide valve.  I know a couple of you guys have built this engine already and documented it on this forum.  They did a better job than I can with pictures and steps they took.  (sshire and kvom).  I am going to post a few pictures that I took.   I am trying to post a picture of the original engine I saw on the VCR tape at a NAMES show.  Hope it works.
« Last Edit: January 10, 2018, 03:12:18 AM by flopearedmule »

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #1 on: January 10, 2018, 02:47:00 AM »
Ok, so I'll try to post a few pictures of what I have done so far.
First, I decided it was too small, so I am scaling it up 50%
Here is the first part I completed.  It is a little bigger than I thought it would be, but I have these parts made already so this is the size.
On the third picture, I zoomed in to a flat head screw.  These frames had to be .75 thick, and I had 4 pieces of 3/8 6061 Aluminum, so I bolted them together in four places. 
« Last Edit: January 10, 2018, 07:43:13 PM by flopearedmule »

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #2 on: January 10, 2018, 03:23:53 AM »
Here is the bearing caps and then the caps bolted to the frames and bored the crank hole and the pivot hole.  I screwed up on the distance between them, so I had to bore the cap .100" past the center line.  you can tell there is more hole in the cap vs the frame.  I messed up a number in ACad but its all good ;D ;D
« Last Edit: January 10, 2018, 07:44:27 PM by flopearedmule »

Offline kvom

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Re: Coventry by Roy Ozouf
« Reply #3 on: January 10, 2018, 11:50:02 AM »
Looks good.  You did the hard part first.   :ThumbsUp:

Online b.lindsey

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Re: Coventry by Roy Ozouf
« Reply #4 on: January 10, 2018, 01:10:58 PM »
You are off to a good start Dennis. Looking forward to seeing more of your progress on this one.

Bill

Offline sshire

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Re: Coventry by Roy Ozouf
« Reply #5 on: January 10, 2018, 03:18:14 PM »
That definitely is the hard part done.
Nice work.
Best,
Stan

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #6 on: January 13, 2018, 08:37:16 PM »
I have an MX2 controller on a Bridgeport.  Its nice to profile without a rotary table.
Here is an example of what I do to get my points.  I draw it in ACad and then write down the points.

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #7 on: January 13, 2018, 08:45:02 PM »
I got the Port Block and Steam Chest complete

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #8 on: January 13, 2018, 08:48:31 PM »
I had to stop and build a part for Dad's engine.

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #9 on: January 13, 2018, 08:55:42 PM »
I'm thinking about the flywheel.  What do you guys think?  I can buy one from Martin's, or I can build one out of cast iron.
I can buy a chunk of cast iron from McMaster Carr for around $50 or buy a casting for around $50.  Same price.
What looks better???

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #10 on: January 14, 2018, 01:53:48 AM »
here's some pics of the crankshaft
first the cheeks, I bored both together to get holes lined up perfect.
then I profiled, then pressed together.

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #11 on: January 14, 2018, 02:02:56 AM »
Cylinder, Pivot Block, and Pivot Shaft

Offline flopearedmule

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Re: Coventry by Roy Ozouf
« Reply #12 on: January 14, 2018, 02:08:39 AM »
It's coming together! :cartwheel:

Offline Admiral_dk

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Re: Coventry by Roy Ozouf
« Reply #13 on: January 14, 2018, 09:13:24 PM »
Looking very good so far and you are certainly moving quickly along to completion  :ThumbsUp:

Online b.lindsey

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Re: Coventry by Roy Ozouf
« Reply #14 on: January 14, 2018, 10:18:58 PM »
Very quickly indeed!!!  On the flywheels, what material is the Martin casting ?

Bill