Recent Posts

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Super job Chris really get a kick out of watching it run.

Thomas
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Chatterbox / Re: I did a bad bad thing......
« Last post by steamer on Today at 12:31:30 AM »
Installed
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Chatterbox / Re: I did a bad bad thing......
« Last post by steamer on Today at 12:24:22 AM »
Photo 1
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From Plans / Re: 1st I.C. build "Tiny"
« Last post by 90LX_Notch on Today at 12:20:51 AM »
I was lucky enough to get some shop time.


Piston:

The piston is pretty straight forward.  I made a lap and lapped it while it was still attached to the parent material.  Then it was parted off and the wrist pin bore was drilled and reamed and the pocket for the small end of the connecting rod was milled.  I wanted to ensure that the bore and pocket were perpendicular to each other.  The easiest way that I could come up with was to mount the piston in a small toolmaker's vice with a small vee block. 

A parallel was the bolted to the mill's table and indicated along X axis.  This gave me a datum to bank the toolmaker's vice off of.  The wrist pin bore was drilled and reamed to size first. This was done with the vice on it's side and clamped to the table against the parallel.  For the pocket, the vise was oriented as it normally would be and against the parallel.  This ensured that both the bore and the pocket's geometry were correct in relationship to each other.  The piston was then indicated to get true center and the pocket was milled.  A dowel pin was used to make the wrist pin.


-Bob
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Chatterbox / Re: I did a bad bad thing......
« Last post by crueby on Today at 12:19:57 AM »
Horological, geological, same thing! Well, not...
You should have made something up, might have invented a new term!

 :ROFL:
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Vehicles & Models / Re: Chris' Build of a Lombard Hauler Engine
« Last post by crueby on Today at 12:17:57 AM »
Okay, here is some footage of the hauler tooling around the driveway today. As I mentioned in the previous post, I think that the valve timing needs a tweak, appears to have a slight stutter on one side causing the pauses now and then, may need an adjustment to the position of one of the eccentrics. However, the boiler is working quite well, and the loose pin on the one chain is solved as well. Very satisfying to see it going after all this time on it! 

Sorry for the jumpy camera work, hard to juggle the camera aim, throttle, steering all at once. This is the longest session of running so far, was out there about 1/2 hour of actual run time, still plenty of fuel and water left. Tomorrow I'll take a look at the timing using compressed air, and also get started on the display base I mentioned.

Got the popcorn ready? Here's the main feature. Hey, you, shop elves, off the chandelier and take your seats!!

:cheers:
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Chatterbox / Re: I did a bad bad thing......
« Last post by b.lindsey on Today at 12:04:44 AM »
Don't you just love auto-correct. NOT!!

Bill
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Chatterbox / Re: I did a bad bad thing......
« Last post by steamer on September 23, 2017, 11:46:30 PM »
A android trying to help me
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Chatterbox / Re: I did a bad bad thing......
« Last post by crueby on September 23, 2017, 11:45:20 PM »
Did a little.work today on this lathe    .   The geological face plate was for  Marshall lathe.   So the key way needed to be extended and a spacer made for the draw bar.   That was easy.  Then it needed a pump center which I made today.   All done...pictures coming
Terminology question - what is a 'geological' face plate?
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Chatterbox / Re: I did a bad bad thing......
« Last post by steamer on September 23, 2017, 11:42:52 PM »
Did a little.work today on this lathe    .   The horological face plate was for  Marshall lathe.   So the key way needed to be extended and a spacer made for the draw bar.   That was easy.  Then it needed a pump center which I made today.   All done...pictures coming
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