Author Topic: Westbury's prototype for his Heinrici engine  (Read 12362 times)

Online Jo

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Re: Westbury's prototype for his Heinrici engine
« Reply #45 on: December 24, 2019, 01:55:15 PM »
I knocked up some pieces of angle with curved insides for the base then did a bit more drilling, screwing, filling  :paranoia:

I'm now declaring the base as replaced: just need to clean up the JB Weld once dry and paint it black  :)

Jo
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Online Alyn Foundry

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Re: Westbury's prototype for his Heinrici engine
« Reply #46 on: December 24, 2019, 02:17:21 PM »
That almost looks like a casting Jo!!   :)

All the very best for Christmas and the New year.

Graham and Jules.

Online Jo

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Re: Westbury's prototype for his Heinrici engine
« Reply #47 on: December 24, 2019, 02:30:52 PM »
Thank you Graham  :)

Best wishes to your family too. :cheers:

Jo &  :pinkelephant:
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Offline Jasonb

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Re: Westbury's prototype for his Heinrici engine
« Reply #48 on: December 24, 2019, 03:12:56 PM »
That looks the part

Quite an odd way it was done on the original, almost looks like the angles were an afterthought possibly when a few legs got broken, if original I would have thought they would flow better into the four feet

Online Jo

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Re: Westbury's prototype for his Heinrici engine
« Reply #49 on: December 24, 2019, 03:19:35 PM »
This is an engine Heinrici made with its original stand. Different stands were available depending on the intended fuel.

Jo
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Offline Jasonb

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Re: Westbury's prototype for his Heinrici engine
« Reply #50 on: December 24, 2019, 03:42:45 PM »
Yes I know what it is based on but they do look like an after thought that may have been added to the pattern if legs were getting damaged .

Also the right 1/4" circle profile rather than angle ;)

Something more like this would look like the stretchers between the legs were part of the original design.
« Last Edit: December 24, 2019, 04:50:37 PM by Jasonb »

Online Jo

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Re: Westbury's prototype for his Heinrici engine
« Reply #51 on: December 24, 2019, 05:50:14 PM »
That will look nice on your model when you build it. Are you going for the 1940 or 1964/65 design?

Jo
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Offline Jasonb

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Re: Westbury's prototype for his Heinrici engine
« Reply #52 on: December 24, 2019, 06:23:10 PM »
Well if I did one then probably neither as I quite like the look of the ones like you posted from Prestons that don't have the separate cylinder on the side. The brackets that support the rocker shaft look a lot more interesting and I like the general movement more.

<a href="https://www.youtube.com/watch?v=D3uiJYCLjQc" target="_blank">http://www.youtube.com/watch?v=D3uiJYCLjQc</a>

Offline Jasonb

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Online Jo

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Re: Westbury's prototype for his Heinrici engine
« Reply #54 on: December 25, 2019, 09:05:20 AM »
That looks very desirable you will have to provide us with more details once you have the price.

Jo
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Online Alyn Foundry

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Re: Westbury's prototype for his Heinrici engine
« Reply #55 on: December 25, 2019, 11:10:49 AM »
Merry Christmas.

Before Gardner's of Patricroft went into mass production of the Robinson patent air engine they had built a small vertical " Beta " style engine with the " concentric " piston arrangement. Like the Heinrici's you've recently posted.

I'm unable to post a picture at the moment, but I did have the pleasure of seeing one at the Anson a couple of years ago.

This model might be one to consider scaling due to its rarity?

Cheers Graham.

Offline Jasonb

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Re: Westbury's prototype for his Heinrici engine
« Reply #56 on: December 25, 2019, 11:43:14 AM »
Sounds interesting, hopefully you will be able to post a pic when you are able.

Online Alyn Foundry

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Re: Westbury's prototype for his Heinrici engine
« Reply #57 on: December 25, 2019, 01:25:53 PM »
Not the best of views Jason.

If you're interested I can see if more are available.

Cheers Graham.

Online Alyn Foundry

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Re: Westbury's prototype for his Heinrici engine
« Reply #58 on: December 25, 2019, 06:40:27 PM »
Works photo.

Courtesy, Anson Engine Museum.

Offline Jasonb

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Re: Westbury's prototype for his Heinrici engine
« Reply #59 on: December 25, 2019, 07:00:00 PM »
Thanks for that Graham, a similar arrangement but Robinson look to have used a link from the crankshaft via a bellcrank rather than an additional crank pin off the flywheel that Heinrici did to move the smaller piston.

Jo's little helper will be disappointed to learn that the German castings are no longer available as they proved too costly but I think he may still sell the drawings, looking back at one of last years MiM mags there is an article about building one from the drawings and it is also covered in this thread on a German forum which Google translates quite well. Nice little water pump on it too.

https://forum.zerspanungsbude.net/viewtopic.php?f=34&t=29837

The few parts this chap cast could be fabricated and my CNC should make easy work of tehtwo brackets

 

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