Author Topic: Stevens Model Dockyard Engine  (Read 11526 times)

Offline Chipmaster

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Re: Stevens Model Dockyard Engine
« Reply #30 on: November 20, 2024, 11:54:39 AM »
A YouTube video showing the engine as it was to running yesterday afternoon. It's tight at the moment so I might resort to judicious doses of Timesaver Lapping Compound here and there.

<a href="https://www.youtube.com/watch?v=-c738MvoKEY" target="_blank">http://www.youtube.com/watch?v=-c738MvoKEY</a>

Work I have done so far =
New 1/4" thick brass base plate,
Repositioned main bearing.
New crankshaft
New valve chest
New Valve Rod
Bushed the bronze flywheel hub
Broached a 1/8 keyway in the hub
Skimmed the flywheel rim and painted it.

The engine still wheezes a lot and uses a lot of compressed air when running. I want to improve it so that my Stuart 504 boiler has a chance of driving it.

Andy

Offline Jasonb

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Re: Stevens Model Dockyard Engine
« Reply #31 on: November 20, 2024, 12:30:37 PM »
It's getting better all the time.

Funny enough I have recently drawn this one up and it could well be that the original cylinder came from Stevens too as it is a lot like yours.

Offline ShopShoe

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Re: Stevens Model Dockyard Engine
« Reply #32 on: November 20, 2024, 01:06:36 PM »

That's beautiful. I like to watch it run at the speeds you are showing.

Congratulations and Thank You for posting.

ShopShoe

Offline Chipmaster

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Re: Stevens Model Dockyard Engine
« Reply #33 on: November 22, 2024, 05:49:20 PM »
Bedding in the new crankshaft using Timesaver lapping compound.

<a href="https://www.youtube.com/watch?v=rQHB-jzS9S4" target="_blank">http://www.youtube.com/watch?v=rQHB-jzS9S4</a>

Andy



Offline Chipmaster

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Re: Stevens Model Dockyard Engine
« Reply #34 on: December 14, 2024, 09:09:29 PM »
A YouTube of the engine as it was through to running on compressed air,

<a href="https://www.youtube.com/watch?v=-c738MvoKEY" target="_blank">http://www.youtube.com/watch?v=-c738MvoKEY</a>

Followed by running on Steam.

<a href="https://www.youtube.com/watch?v=TgP4rQJu-qw" target="_blank">http://www.youtube.com/watch?v=TgP4rQJu-qw</a>

I think that's as far as I want to go with this project, I want to get on with my Mery Explosive engine.

Andy
« Last Edit: December 15, 2024, 09:48:56 AM by Chipmaster »

Online Kim

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Re: Stevens Model Dockyard Engine
« Reply #35 on: December 15, 2024, 02:42:46 AM »
Hi Andy,
Those video links didn't work for me.  Are they the right link?  Is it marked public?  Just a thought...

Kim

Offline Jasonb

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Re: Stevens Model Dockyard Engine
« Reply #36 on: December 15, 2024, 07:02:59 AM »
Try

<a href="https://www.youtube.com/watch?v=-c738MvoKEY" target="_blank">http://www.youtube.com/watch?v=-c738MvoKEY</a>

<a href="https://www.youtube.com/watch?v=TgP4rQJu-qw" target="_blank">http://www.youtube.com/watch?v=TgP4rQJu-qw</a>

Offline paul gough

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Re: Stevens Model Dockyard Engine
« Reply #37 on: December 15, 2024, 08:22:23 AM »
How wonderful to see an old bronze engine brought lovingly back to life. These relatively long stroke engines running at appropriate speeds are a delight to watch. Bravo for a job well done.
Regards,Paul Gough.

Offline Chipmaster

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Re: Stevens Model Dockyard Engine
« Reply #38 on: December 15, 2024, 09:54:03 AM »
Oops, sorry Kim, I have revised my post with links to the YouTube videos that work.
Cheers Jason  :cheers:

Andy

Offline Chipmaster

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Re: Stevens Model Dockyard Engine
« Reply #39 on: December 15, 2024, 09:59:10 AM »
Thanks for your comment Paul, I find the bronze flywheel particularly attractive, it's probably the most valuable part of the model by far.

Andy

Online Kim

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Re: Stevens Model Dockyard Engine
« Reply #40 on: December 15, 2024, 10:37:29 PM »
Beautiful! Thanks for fixing the links!   :popcorn: :popcorn:

Kim

 

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