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Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by ddmckee54 on Today at 09:40:19 PM »
You got the tracks done, or at least mostly done, you've got the business end mostly done, and you've got the cab skeleton mostly done.  Now all you've got to do is fill up that big honkin' hole in the back and you're done-done.

You're gonna have it finished by the end of next week, right?

Don
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From Kits/Castings / Re: Stuart Major Beam Engine
« Last post by crueby on Today at 09:35:43 PM »
Great job on the bearing! Got to remember that one, tried using soft solder once with mixed results, looks like the silver solder route held much better.
 :popcorn: :popcorn: :popcorn:
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From Kits/Castings / Re: Stuart Major Beam Engine
« Last post by Chipmaster on Today at 09:26:30 PM »
Next item was the brass big end bush, one half square, the other half semi-circular.
Big End Bush by Andy, on Flickr

Circular part machined,
WP_20190516_15_54_37_Pro by Andy, on Flickr

Milled it down to half it's diameter,
WP_20190516_16_38_19_Pro by Andy, on Flickr

Added the square half by attaching a rectangular piece using silver solder.
WP_20190516_17_17_47_Pro by Andy, on Flickr

WP_20190516_17_25_49_Pro by Andy, on Flickr

Milled the rebate in the square half to fit the end of the con-rod and strap.
WP_20190517_12_42_31_Pro by Andy, on Flickr

Cleaned it up to fit the strap


Then drilled and reamed it to fit the crank pin
[url=https://flic.kr/p/25nmwDr]
WP_20190517_13_10_33_Pro by Andy, on Flickr

Parted off,


Re-heated to break the silver solder joint and fitted in the connecting rod strap with a temporary wedge,

[url=https://flic.kr/p/25nmvSB]
WP_20190517_16_09_58_Pro by Andy, on Flickr

Andy
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Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by crueby on Today at 09:18:32 PM »
This afternoon I marked out the locations of the cross beams on the lengthwise beams for the ceiling, and milled the notches in - fortunately I had a mill that matched the width of the beams so just one pass per notch. The beams were all done at once to make sure they matched - had a clamp across the set so that I could move them together and keep the alignment.


And drilled the holes for the screws in each notch...


Here they are screwed in place on the hoops, looking like a cab!

Next will make the door headers and then the front and back walls will be framed in. The back wall is just a few cross bars, the front is just behind the operator and has a doorway on the left side and a tool bin on the right side.


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Vehicles & Models / Re: Chris's Marion 91 Steam Shovel
« Last post by crueby on Today at 09:12:52 PM »
I can only agree - it do change the look dramatically ..... getting the roof and sides on the "skeleton" you're making right now, will even hide that fact that you haven't got to the boiler etc.   :Lol:

Hey who's hogging the popcorn ?     :cheers:
munch munch.... oops, sorry, it went by here and I grabbed the bowl.... um, sorry for the swarf in it...   :cheers:
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Your Own Design / Re: Sideshaft i.c. Horizontal engine
« Last post by crueby on Today at 09:08:13 PM »
Very well done!  I'll have to send you the logs next time I need some lumber!
All working great!   :ThumbsUp:
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From Kits/Castings / Re: Building the I F Allman from Alyn Foundry
« Last post by Jasonb on Today at 08:57:38 PM »
Thanks Admiral.

The liner was not an ideal casting with some pattern shift but the cored hole was reasonably straight so I used that to set things up. No photo of the first setup which was to hold in the 4-jaw by the small diameter to face the flange and turn the edge round and concentric to the cast bore.



I then glued a plug into the other end and held by the flange to turn the outside diameter and the small 1/16" lip but leaving as much of the cast flange as possible as this prevents the liner distorting under the pressure from the jaws. luckily the casting is over length and I just managed to end up with a clean surface within the pen mark which indicates the final length.



Now having a smooth outer surface the fixed steady can be used to support the liner first to machine it to length ( leave 20thou over at this stage) which keeps tool projection to the minimum when the liner is then bored.



The last job is to hold lightly by the outside to turn away the unwanted flange just leaving the lip, luckily the liner just went into the bore of my 4-jaw so there was not too much overhang.



The collar to close of the water jacket is a simple turning job from as stub of cast iron bar that can then be parted off.





The liner and ring can now be fitted to the jacket with 642 Loctite, I also added a drop through each of the water bosses and moved the assembly about so it flowed into any missed joints before sealing up and allowing to go off. Once set the cylinder can be held in the lathe and a finish cut taken along the sloping collar and liner end so the joint becomes invisible, finally ease the liner edge so the piston ring slips in easily. Final holes for inlet and exhausts can also be added at this stage.



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From Kits/Castings / Re: 1909 Mercedes Aero Engine
« Last post by Old Bill on Today at 08:35:16 PM »
Thanks John. I have never seen another one so it was all a bit of guesswork. It could probably do with a bit of refinement but time will tell!

Steve   :)
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Vehicles & Models / Re: D51-200 Tender Locomotive 2-8-2
« Last post by J.L. on Today at 08:32:32 PM »
Per, at first, I found the kit expensive. But the more I work with the carefully engineered parts in both crisply bent sheet metal and superbly cast zinc, I see and  appreciate the value.

And we haven't even arrived at the electrics yet - or the ball bearings in the track!

Here's what I mean by crisply formed sheet metal. It is also amazing what they can do with 2mm black screws only 2mm long.

 
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Your Own Design / Re: Sideshaft i.c. Horizontal engine
« Last post by Brian Rupnow on Today at 08:30:49 PM »
Thanks John. There are a lot of hours represented on that table top. :Lol: :Lol:
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