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vbentley
Joined: 15 Sep 2014 Posts: 10 Location: Surrey, BC, Canada
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vbentley
Joined: 15 Sep 2014 Posts: 10 Location: Surrey, BC, Canada
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klankenau
Joined: 15 Nov 2005 Posts: 45 Location: Dallas, Texas
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Posted: Thu Apr 30, 2015 12:11 Post subject: |
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Considering the production quantity, application and era, any "manuals" were most likely limited to several pages of basic information, typewritten and mimeographed.
An interesting piece of engineering. There were a lot of specialist (non-aero) engine manufacturers in the pre and immediate post war era. I'm guessing that it shares components from something more common or it would have been a very impractical and expensive experiment. |
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vbentley
Joined: 15 Sep 2014 Posts: 10 Location: Surrey, BC, Canada
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Posted: Mon May 04, 2015 20:32 Post subject: Nelson H-44 |
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Yes, it is a long shot to hope that someone had a manual or some tech description in the back of a drawer.
I have a manual for McCulloch O-100 engine used on the Northrop KD2R drone and most of the tech details are very similar - except it is a larger engine of up to 95 hp. Nothing that I have found so far suggests that Nelson used McCulloch parts or design, but details of the ignition system are very similar.
Not having anything to do with 2-stroke engines more complex than a lawnmower it is all new to me! |
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tfey
Joined: 13 Jul 2003 Posts: 104 Location: Arlington Hts., IL
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Posted: Wed Aug 10, 2016 11:08 Post subject: Nelson H-44 may be H-59 or H-63 |
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I just acquired an H-44 (bore 2.2.5; stroke 2.75) and it has just 4 studs on the cylinders, the carb flange is on the centerline of the engine, and there are no studs or flats on the exhaust ports. I believe the engine you are very nicely restoring is a Nelson H-59 of 40 horsepower. Can you please tell me the bore and stroke of your engine? The engine displacement will help identify the model of engine. Thanks. Tom Fey |
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vbentley
Joined: 15 Sep 2014 Posts: 10 Location: Surrey, BC, Canada
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Posted: Fri Aug 19, 2016 11:20 Post subject: |
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Thanks Tom for the comment. My summer time has been very busy and I can't find the dimensions at present. Will pass them on soon. Vic |
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vbentley
Joined: 15 Sep 2014 Posts: 10 Location: Surrey, BC, Canada
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Posted: Fri Sep 02, 2016 21:41 Post subject: |
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I measured the bore as 2.625 and stroke as 2.75 in. This may make it the H-59 as you suggested, but I can't find reference to the bore of that engine. The Museum presumed the engine was the H-44 that came with the Bowlus glider we have on display - but after all this time who knows?
The other mystery is how the engine mount was fitted. The lugs for the mounts are not in the open and would not take a normal mount as per Continental/Lycoming. A picture of another in this family of motor gliders shows a circular tube steel engine mount.
Would appreciate any info you have. Vic
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