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Your Own Design / Re: Junkers CLM
« Last post by Roger B on Today at 08:15:21 AM »
Thank you Kim  :)  That's just red marked pen to keep the orientation until I make some permanent marks.

Due to my small machines I could not make a long enough crankshaft so now I need to add an extension to drive the water pump etc. As the crankshaft was in the lathe I turned a small radius on the webs to make it easier to fit into the crankcase. The extension will be in two parts, a sleeve and a sacrificial extension shaft. I chewed up the end of the crankshaft on my diesel trying to start it and expect similar problems with this engine so I shall make it replaceable. The starting dog is not keyed to the shaft, just clamped, to act as a mechanical fuse.

The end of the crankshaft was turned down to 8mm and a 12mm sleeve was drilled and reamed to fit. The sleeve was then broached for a 2mm key. It will be Loctited to the end of the crankshaft and the extension will use the same key but be held in place with a couple of grubscrews.
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Your Own Design / Re: Kearsarge Windlass Engines
« Last post by Roger B on Today at 07:56:45 AM »
Thats a lot of cranking and swarf  :ThumbsUp:  :ThumbsUp:  :ThumbsUp:  :wine1:
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Excellent  :praise2:  :praise2:  :wine1: Now you need to build a tractor to fit it in  :stickpoke:
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From Plans / Re: Farm Boy
« Last post by Roger B on Today at 07:50:18 AM »
I like the colour  :ThumbsUp: A bit different to the usual  :)
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Vehicles & Models / Re: Pennsylvania A3 Switcher (Kozo)
« Last post by Roger B on Today at 07:48:34 AM »
What a wonderful little hand wheel  :praise2:  :wine1:
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Your Own Design / Re: Building a twin cylinder inline i.c. engine
« Last post by Jasonb on Today at 07:33:56 AM »
The shims are in this engine as Brian had the piston hitting the valves. Which also indicates that he has not directlys called other parts as they did not hit on Malcom's design



I'd also be interested to see if the engine runs with all that starting arrangement taken off, must add some drag which won't be helping a weak engine to run. Also hope the crank is straight as that flywheel wobbles about a lot when watching the valves in slow motion.

As the one who suggested the bump test my only worry is that Brian's engines are often tight and need motoring to wear them in, so care should be taken to make sure it is compression that is being felt not tight spots. Crank looked tight when Brian posted a video of it being turned by hand, it should be free like this Brian, this is my opposed twin version

<a href="https://www.youtube.com/watch?v=9yERrHgN_jI" target="_blank">http://www.youtube.com/watch?v=9yERrHgN_jI</a>

Also check that it is not over filled with oil, those of us that made opposed versions found oil got thrown up and made it's way into the cylinder on one side. It should be less likely on this engine but as sump has been changed and possibly crank and big ends more oil may be getting thrown about than is good for it.

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Vehicles & Models / Re: Pennsylvania A3 Switcher (Kozo)
« Last post by Prowler901 on Today at 04:41:46 AM »
Not sure what you're on about,  Kim.  The handle looks great

Todd
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Vehicles & Models / Re: Pennsylvania A3 Switcher (Kozo)
« Last post by Kim on Today at 04:32:03 AM »
Thanks, Jeff.  :cheers:
And a great idea on painting the 'spokes' of the handle. That's a viable option!

Kim
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Thanks Per.  and the conrod is turned up from a length of brass hexagon and filed up to fit the eccentric strap  and the valve rod fork part . the the eccentric strap holes have to allign with the conrod so it is drilled the tapping sizes first. the conrod is then drilled and connected to the strap part and then the other hole is drilled through from the strap with the tapping size drill then removed and opened up to clearance size. the other hole on the strap is then tapped and the rod then attached with 10 BA bolts. the other end of the rod is then filed square 1/4" and then filed to receive the fork end.
Willy
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Vehicles & Models / Re: Pennsylvania A3 Switcher (Kozo)
« Last post by cnr6400 on Today at 03:01:33 AM »
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn: Great looking valve handle Kim! I wouldn't worry about the openings being exactly to drawing (they look just fine to me, in any case). One way to take viewer's eyes away from the openings though might be to paint the handle centre a dark colour. Just food for thought. :cheers:
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