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Author Topic: gbritnell's table  (Read 1267 times)

gbritnell

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gbritnell's table
« on: February 29, 2020, 10:06:11 am »
These are posted on Youtube but for those of you that haven't seen them may I present some of my mechanical contrivances.









Talent unshared is talent wasted.

Stoker

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Re: gbritnell's table
« Reply #1 on: February 29, 2020, 10:21:15 am »
The quality and diversity of your CRAFTSMANSHIP, is far beyond the comprehension of us mere mortals!


NOTHING LESS THAN SPECTACULAR!!!
"Information is not knowledge, Knowledge is not wisdom, Wisdom is not truth, Truth is not beauty, Beauty is not love, Love is not music: Music is THE BEST...   
Wisdom is the domain of the Wis (which is extinct). Beauty is a French phonetic corruption of a short cloth neck ornament currently in resurgence..."
F. Zappa ... by way of Mary, the girl from the bus.

MasonvilleEngines

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Re: gbritnell's table
« Reply #2 on: February 29, 2020, 10:23:30 am »
Legendary builds!

AirSpyder

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Re: gbritnell's table
« Reply #3 on: February 29, 2020, 10:37:20 am »
Absolute works of art.
Super nice.

txlabman

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Re: gbritnell's table
« Reply #4 on: February 29, 2020, 10:40:47 am »
I never tire of viewing your exquisite work George.

Looking forward to visiting with you at NAMES 2020.

Thank you for participating in GPU 2020! 🤠

RedRyder

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Re: gbritnell's table
« Reply #5 on: February 29, 2020, 10:45:17 am »
The quality and diversity of your CRAFTSMANSHIP, is far beyond the comprehension of us mere mortals!


NOTHING LESS THAN SPECTACULAR!!!




Hi George, I am 100% with Daniel on this.
You have accomplished some of the finest contriving I have ever seen!

Thank you so much for showing here.

Gil

Woe is me

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Re: gbritnell's table
« Reply #6 on: February 29, 2020, 10:51:44 am »
I have to go with what they all said. You definitely have the WOW factor.
Tommy

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Nick

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Re: gbritnell's table
« Reply #7 on: February 29, 2020, 11:32:13 am »
George, your work is the best   and I am lucky enough to have seen it in person  :)
Nick

Steamloco

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Re: gbritnell's table
« Reply #8 on: February 29, 2020, 02:41:53 pm »
Simply amazing!
Give us this day our daily Steam
And deliver us from Diesels
          Bret

Dr.Rev.DelmarMacReady

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Re: gbritnell's table
« Reply #9 on: February 29, 2020, 03:40:00 pm »
I'm just gobsmacked by your work.
Bennydaheeb

Alan

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Re: gbritnell's table
« Reply #10 on: March 01, 2020, 06:45:34 am »
Hy George,
Fantastic work !
Greetings form Switzerland.
Alan


Junkologist

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Re: gbritnell's table
« Reply #11 on: March 01, 2020, 08:02:22 am »
George, your work is the best   and I am lucky enough to have seen it in person  :)

Ditto!
Just mind-blowing!
Mike

Check out my YouTube channel here: https://www.youtube.com/user/Cletrac

oilfield_steam

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Re: gbritnell's table
« Reply #12 on: March 01, 2020, 08:09:12 am »
Scott

gbritnell

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Re: gbritnell's table
« Reply #13 on: March 03, 2020, 07:36:03 am »
As the tables are still open I thought I would post these last 3 videos. The original design drawings were posted on another of the model engineering forums and many of them were built. The basic shape was that of a water-cooled type hit and miss engine but without the hit and miss function. Along the line one of the builders created the parts to make his a true hit and miss. I had conversations with him and he sent me some of the extra parts he has made (CNC) I used the flywheel weights but didn't care for the overall design of his lock-out mechanism so I designed my own to more replicate a conventional hit and miss engine.
That is the first video.
I did make some modifications to the design mainly by adding ball bearings to the crankshaft. I also changed the spark plug size and the entry angle as the original plug liked to arc to the valve rocker arm.
The second engine is an extension of the first meaning it uses all the same parts but has an air cooled cylinder.
As an aside, the original engines without governors would run quite fast and therefore would heat up quickly. With the governor set-up the engines will run all day without making much heat at all. This air cooled one barely gets warm to the touch.
The third engine, a vertical, uses some of the basic pieces but with a different base and cylinder arrangement. This also constituted a different fuel tank setup.
The final iteration is a side shaft version of the original. The only original parts were the base, cylinder, flywheels and rod and piston. The head, governor and all other bits and pieces are unique to this engine. For the video I was able to get it to run about it's best. There is a spring on the governor which returns the weight, much like a common governor setup. There is another spring on the speed over-ride lever which will adjust the engine speed  while it's running. This spring is minuscule (.008 wire diameter and about .100 long) and is the one element in the whole design that is almost to hard to regulate. I have wound at least 6 different springs with different numbers of coils but with the small size, length constant) it's really hard to get one that totally works.
Enjoy



 
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gbritnell

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Re: gbritnell's table
« Reply #14 on: March 03, 2020, 07:43:21 am »
I would like to thank all who have watched, appreciated and commented on my table. I get great pleasure working with my tools and building the wide variety of models that I have in my collection but more-so I enjoy sharing with others of like mind. At shows when I exhibit I get many comments from all ages and genders but it's the fellows that build and work with these things that really understand the time and effort that goes into them.
In my opinion it's a wonderful hobby and I hope to continue doing it until I can't lift my 8" rotary table onto the mill table any longer. Seems to be getting close. I do have a smaller 6" but it's not quite as nice as the larger one.
gbritnell
Talent unshared is talent wasted.