Author Topic: Travis Steam Engine No.5  (Read 4853 times)

Offline Ye-Ole Steam Dude

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Travis Steam Engine No.5
« on: October 05, 2017, 04:43:20 PM »
Hello everyone,

I have now completed the drawings for another original design steam engine. This will be labeled "Travis Steam Engine No.5".

My design criteria is based on a circa 1800 to 1900 single cylinder steam engine and add modern modifications to improve the overall performance. I also wanted an engine that could be built from bar stock material and eliminate the need for castings.

The engine specifications are:

Style: Steam Engine, single cylinder-double-acting
Number of cylinders: one, aluminum with brass insert liners
Bore: 1.25-inch
Stroke: .875 - inch
Piston: Aluminum, with two plates and one Teflon sealing ring
Piston Rod: 3/16" Brass round rod
Connecting Rod: Brass, machined from flat bar
Crankshaft: Brass, machined from round bar and mounted on s/s ball bearings
Valves: One vertical machined from 1/4" brass round rod, triple opening, spring loaded.
Valve Chamber: Brass, vertical, single 1/4" bore, machined from flat bar
Cam: One, eccentric lobe, brass, mounted on crankshaft, adjustable timing
Head - Top: Aluminum, machined from round bar
Head - Bottom: Aluminum, machined from round bar and houses stuffing box for the piston rod
Bottom Plate: Aluminum, machined from flat bar
End Plates and Base: Aluminum flat bar, machined to shape
Flywheel: Cast brass modified with a longer center hub
Steam and Exhaust plumbing: 1/4" brass pipe and fittings
Hardware: stainless

I have almost completed the engine and will add more photos later.

Thomas

Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #1 on: October 05, 2017, 06:27:36 PM »
Hey everyone,

Here is the cutaway drawing of the engine.

Thomas
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #2 on: October 06, 2017, 09:29:53 AM »
Hello everyone,

I am attaching a photo of the all brass crankshaft. I have uploaded two videos showing the construction to my Youtube channel.

Have a great day,
Thomas
Thomas

Offline Admiral_dk

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Re: Travis Steam Engine No.5
« Reply #3 on: October 06, 2017, 12:00:39 PM »
Beautiful work - looking forward to the rest of the build  :praise2:

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #4 on: October 06, 2017, 01:09:41 PM »
Beautiful work - looking forward to the rest of the build  :praise2:


Thank you, I have more parts completed and will add more photos soon.

Have a great day,
Thomas
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #5 on: October 06, 2017, 04:41:18 PM »
Hey everyone,

Here are couple photos of the Top and Bottom Heads and a short video.

<a href="https://www.youtube.com/watch?v=Om4dvKgtzwA" target="_blank">http://www.youtube.com/watch?v=Om4dvKgtzwA</a>

Later,
Thomas
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #6 on: October 07, 2017, 12:39:38 PM »
Hello everyone,

I am attaching 3 photos of the first part of the Cylinder machining and part-one video.

Thomas

<a href="https://www.youtube.com/watch?v=IW3m7jm6DLw" target="_blank">http://www.youtube.com/watch?v=IW3m7jm6DLw</a>
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #7 on: October 07, 2017, 08:05:35 PM »
Hello again,

OK guys one more photo of the Cylinder and part-2 video.

Thomas
<a href="https://www.youtube.com/watch?v=u3B7gDDA5Q0" target="_blank">http://www.youtube.com/watch?v=u3B7gDDA5Q0</a>
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #8 on: October 08, 2017, 12:00:19 PM »
Good morning to all,

Completed the brass Valve Chamber and a test fit on the Cylinder along with the Valve. Attaching two photos and another video.

Have a great day,
Thomas

<a href="https://www.youtube.com/watch?v=TxM9ae0UV80" target="_blank">http://www.youtube.com/watch?v=TxM9ae0UV80</a>
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #9 on: October 09, 2017, 03:00:41 PM »
Hello everybody,

I am attaching just one photo of the brass Valve with the "Roller Ball" installed. This is the original Valve that I made but have since made some modifications by eliminating the S/S ball. I have changed to a hinged lever for the Valve to ride on similar to a rocker arm and do not need the ball any longer. I have uploaded to my Youtube channel a video showing how the original valve was made.

Have a great day,

Thomas
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #10 on: October 09, 2017, 05:08:53 PM »
Hello again,

Got all the completed parts put together and made a test run to confirm that the Valve System was going to work and it appears to be OK.

Thomas
<a href="https://www.youtube.com/watch?v=1tm909DQkn0" target="_blank">http://www.youtube.com/watch?v=1tm909DQkn0</a>
Thomas

Offline bent

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Re: Travis Steam Engine No.5
« Reply #11 on: October 09, 2017, 06:51:06 PM »
Lookin' good Thomas!

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #12 on: October 09, 2017, 08:57:51 PM »
Lookin' good Thomas!

Thank you Bent, I sure am happy that the valve system worked. That .0925 elongation of the hole openings in the Valve Chamber had me worried. The timing is super sensitive, unlike any other engine that I have built.

Have a great day,
Thomas
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #13 on: October 10, 2017, 02:19:25 PM »
Hey everyone,

Getting real close to a steam up now. Attaching two photos and a video of the aluminum Side Plates and a trial fit of the completed parts.

Thomas

<a href="https://www.youtube.com/watch?v=53EHy6at6UY" target="_blank">http://www.youtube.com/watch?v=53EHy6at6UY</a>
Thomas

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine No.5
« Reply #14 on: October 11, 2017, 01:50:44 PM »
Hey everybody,

OK, got the engine assembled and made a first test run on air and very pleased that it runs really well. During the build I made quite a few changes to my original design but am happy with the final engine and the overall look. The timing was a bit hard to establish that sweet spot, but once I zeroed in on it, all worked just fine.

Have a great day,
Thomas

<a href="https://www.youtube.com/watch?v=9RlsiY0YxgA" target="_blank">http://www.youtube.com/watch?v=9RlsiY0YxgA</a>
Thomas

 

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