Recent Posts

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1
Introduce Yourself / Re: Hello, glad to be part of your forum
« Last post by Kim on Today at 05:24:32 AM »
Hi John,
Welcome to the forum!
Kim
2
From Kits/Castings / Re: Newbie building a PMR 6CI
« Last post by vdubjunkie on Today at 04:29:16 AM »
The week of 3/5/17 didn't produce very many pictures, but I did get my valve port reamed.

I decided to trace the cylinder on a sheet of paper, get the center of the cylinder marked out and measure the distance to the center of the valve port.  I was very happy with the results.  Maybe there is a better way, but I couldn't think of one.



Once again, here are the results.  Yesterday I got the proof that the valve port was a consistent diameter throughout as I tested my complete valve!   :whoohoo:



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From Kits/Castings / Re: Newbie building a PMR 6CI
« Last post by vdubjunkie on Today at 04:15:27 AM »
The week of 2/19/17 saw the completion of the boring of the cylinder and creating precise holes in the crank disks for the crank pin.  I have to be honest and say that the method of aligning the two crank disks was taken straight from rcdon's web page.

I used my dial indicator to ensure the boring bar was running true before spinning the cylinder about it.




..and here's the result.  One more hole to be reamed and quite a few holes to be drilled and tapped.



I think this method for alignment of the drill on center was satisfactory.  I've since learned of a very simple concept where a longer rod with a point sits in your tool holder and pushes into your center punch.  It rotates a short distance from the work on a fulcrum showing a much exaggerated display of how far out of center you are as the long end wobbles.  I need to make one of these soon!



This is pretty much just a zoom out of the last picture.  You can get a good look at my messy work space and less than restored lathe!



Now comes the center drill.



After working through a couple of drills, stepping up from a smaller drill, I ran a reamer through and called it good! :cartwheel:



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From Kits/Castings / Re: Newbie building a PMR 6CI
« Last post by vdubjunkie on Today at 03:35:28 AM »

 :facepalm: I'd forgotten that. I wish I'd read this two days ago. But I'd lucked out and managed to make the part. (A flywheel rim from plate.)


Yeah, I've certainly had success turning interrupted cuts with it, but I at least know intellectually that it's not ideal.

I'm really glad y'all are enjoying the thread.  I've been getting quite a bit of work done these past few weeks and I can't wait to get this thread caught up with the project.

5
From Plans / Re: Zee Needs Popcorn
« Last post by zeeprogrammer on Today at 01:30:04 AM »
5th pic shows the reason for the underwear change. I had a mechanical stop but at some point, for some reason, I moved the compound and forget to reset the stop. Boring bar went in far enough for the chuck to catch it.

Though some of us won't admit it, we've all heard those crunching, screeching, loud BANG noises.  Some of us  :-X still have nightmares about them.

Well that's just it. I remember when I started this hobby...rather, when I fell upon this forum...if anyone thinks that even the 'experts' don't have clinching moments, then they are mistaken. That's a major reason why I like this forum. Even the experienced will point out their mistakes, what to look for, how to avoid, etc. Or more importantly...point out the mistakes they make.

It's very much an educational/learning forum. That's why I'm here.

Stuart...I've been wanting to build a trireme. I've been playing with some steppers motors...4-bar linkages...and got a model to study. It may not go anywhere. But, as I've said before, I'm a road guy...not a destination guy. So I play. But tomorrow a squirrel may appear.  ;D

It's all about enjoying life...whatever way works. I do not worry about judgments. For example..."but did you finish it"? Define 'it'!
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Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by crueby on Today at 01:17:32 AM »
Great progress Chris.  You must be working those elves overtime.  Sure hope they don't unionize, might set you back a bit  :ROFL:
That would be too much paperwork. They would probably just bungie cord me to the bed.   Again.


 :Lol:

7
From Plans / Re: Another MEM Corliss (in .40 scale)
« Last post by toolznthings on Today at 01:09:25 AM »
Hi George,

Was not paying attention till you mentioned your new project when we talked today. Great work as always !
Will follow along as you go.

Brian
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From Plans / Re: Zee Needs Popcorn
« Last post by Craig DeShong on Today at 01:06:25 AM »
5th pic shows the reason for the underwear change. I had a mechanical stop but at some point, for some reason, I moved the compound and forget to reset the stop. Boring bar went in far enough for the chuck to catch it.

Though some of us won't admit it, we've all heard those crunching, screeching, loud BANG noises.  Some of us  :-X still have nightmares about them.
9
From Plans / Re: Another MEM Corliss (in .40 scale)
« Last post by Craig DeShong on Today at 12:57:55 AM »
Lovely George, just lovely.
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Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by Craig DeShong on Today at 12:51:17 AM »
Great progress Chris.  You must be working those elves overtime.  Sure hope they don't unionize, might set you back a bit  :ROFL:
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