Author Topic: PMR #5 - as a fill in project  (Read 8321 times)

Online crueby

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Re: PMR #5 - as a fill in project
« Reply #60 on: June 10, 2018, 02:09:01 AM »
Swarf!

Swarf!

Swarf!

Online Jo

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Re: PMR #5 - as a fill in project
« Reply #61 on: June 10, 2018, 07:48:46 AM »
Quote
Swarf

We were beginning to worry Bill, either you had got lost in the underbrush or were planning to head back to work for a rest :Lol:

Which reminds me: a little more weeding and I should be allowed back into the workshop  :cartwheel:

Jo
Usus est optimum magister

Offline b.lindsey

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Re: PMR #5 - as a fill in project
« Reply #62 on: June 10, 2018, 03:03:35 PM »
More likely lost in the underbrush Jo. But will post more on that in the shop thread.

Bill
« Last Edit: June 12, 2018, 07:09:14 PM by b.lindsey »

Offline b.lindsey

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Re: PMR #5 - as a fill in project
« Reply #63 on: June 12, 2018, 07:21:22 PM »
One more part finished up today, the cylinder head. After facing off the back side to get a flat surface I went to the mill and drilled the four mounting holes (photo 1) The 1" bolt circle lined up well with the center of each boss so that was encouraging. In order to turn the OD however I needed to make a simple jig out of some scrap aluminum, drilling and tapping it on the same bolt circle for 2-56 hardware (photos 2 & 3). Then with the head screwed onto the jig, it was easy enough to turn the OD to the proper diameter (photo 4). Then turning the part around in the 4 jaw and centering it the underside recess was machined with a combination of a grooving tool, and left and right hand tools as shown in photo 5. The center boss was then reduced to a height of 1/32" (half the depth of the total recess. The final piece is shown in the last two photos...top side then the underside.

Bill

Offline Tennessee Whiskey

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Re: PMR #5 - as a fill in project
« Reply #64 on: June 12, 2018, 07:34:14 PM »
Nice trepanning there Bill. I like the look of the cast bosses on it also.

Cletus

Offline b.lindsey

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Re: PMR #5 - as a fill in project
« Reply #65 on: June 12, 2018, 08:22:45 PM »
The bosses were cast in as you say. Not sure if they retained that feature in the later casting kits. This set came from the all bronze days, before they changed over to cast iron for many parts.

Bill

Offline Gas_mantle

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Re: PMR #5 - as a fill in project
« Reply #66 on: June 12, 2018, 08:33:42 PM »
Looking good Bill  :)

Will you be able to run the completed engine on the hot stuff ?

Offline b.lindsey

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Re: PMR #5 - as a fill in project
« Reply #67 on: June 12, 2018, 09:57:31 PM »
It should be capable of it, but will need to build the PMR vertical boiler for it before that happens but it is on the list.

Bill
« Last Edit: June 13, 2018, 12:43:47 AM by b.lindsey »

Online Dave Otto

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Re: PMR #5 - as a fill in project
« Reply #68 on: June 13, 2018, 12:23:18 AM »
Nice Progress Bill.

Dave

Offline zeeprogrammer

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Re: PMR #5 - as a fill in project
« Reply #69 on: June 13, 2018, 12:38:23 AM »
but will need to build the PMR vertical for it before that happens but it is on the list.

hee hee hee. That's three so far.

Not counting the one made not so long ago. (I can't find it and don't remember who did it but was hoping to use it as a reference aid.)
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Zee-Another Thread Trasher.

Offline Tennessee Whiskey

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Re: PMR #5 - as a fill in project
« Reply #70 on: June 13, 2018, 04:55:59 PM »
Zee, it was Stan “A riveting build log”. Couldn’t get it to link  :shrug:

Cletus

Offline b.lindsey

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Re: PMR #5 - as a fill in project
« Reply #71 on: June 13, 2018, 05:17:08 PM »
Here you go, but Stan built the horizontal boiler.
http://www.modelenginemaker.com/index.php/topic,2360.0.html


Bill


Offline zeeprogrammer

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Re: PMR #5 - as a fill in project
« Reply #72 on: June 13, 2018, 06:13:14 PM »
Thanks. I found the vertical I was thinking of. It was Tony's (AOG).

Apologies for the digression on your thread Bill.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Offline b.lindsey

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Re: PMR #5 - as a fill in project
« Reply #73 on: June 13, 2018, 06:22:48 PM »
No problem Zee. Glad you found the thread you were looking for. What sub-forum was it in btw?

Bill

Offline J.L.

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Re: PMR #5 - as a fill in project
« Reply #74 on: June 13, 2018, 10:06:27 PM »
Hi Bill,
A great project.
The end of the month is coming!
John