Author Topic: Travis Steam Engine 2 X Size  (Read 5593 times)

Offline gbritnell

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Re: Travis Steam Engine 2 X Size
« Reply #15 on: March 07, 2019, 01:10:33 PM »
Hi Brian,
With the flat crank the engine won't be self starting? I went to Youtube to look up the engine but there's so many on the channel with the same name I didn't know which one to look at.
gbritnell
Talent unshared is talent wasted.

Offline toolznthings

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Re: Travis Steam Engine 2 X Size
« Reply #16 on: March 07, 2019, 03:26:26 PM »
H i George !

Try this link to his YouTube channel :      https://www.youtube.com/channel/UCNWSrK1_cKLTO3gGfzbGvZw

I realize it won't self start, but the crank is a project in its self as designed.
Thanks for the visit !
Brian

Offline toolznthings

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Re: Travis Steam Engine 2 X Size
« Reply #17 on: March 07, 2019, 03:52:25 PM »
More crankshaft build ..........

Assembling the crank parts using 609 Loctite with 427 primer. Output shafts assembled first with the center throws and .750 shaft as a separate assembly. ( no picture )

Set up each output assembly in Starrett V-blocks and established gauge block stack that supports the throws parallel to the surface plate. Two additional gauge block stacks will be used in the next
setup to support the remaining parts.

Aligning the V-blocks with a Starrett straight edge on a mill fixture plate. The rest of the parts are assembled and very lightly clamped. I will be using #2 and #3 taper pins to pin all parts after giving
a day or so for the Loctite to cure.

More to come ..........
Thanks for the visit !
Brian

Offline dpaulson

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Re: Travis Steam Engine 2 X Size
« Reply #18 on: March 07, 2019, 04:46:59 PM »
Brian
I built the Travis# 4 steam engine you are building only to Thomas drawings , Looks great
Dave

Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine 2 X Size
« Reply #19 on: March 07, 2019, 05:08:47 PM »
Hi Brian,
With the flat crank the engine won't be self starting? I went to Youtube to look up the engine but there's so many on the channel with the same name I didn't know which one to look at.
gbritnell


Hello George,

It is Steam Engine No. 4 (see attached drawing) and believe it or not it does self start most of the time even with low air pressure.

Brian, that crank looks great and I like your hold down technique.

Have a great day,
Thomas

Offline yogi

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Re: Travis Steam Engine 2 X Size
« Reply #20 on: March 07, 2019, 06:02:39 PM »
Hi Brian, quite a bit of fixturing you got going on there...  :ThumbsUp: :ThumbsUp: :ThumbsUp:

 :popcorn: :popcorn: :popcorn:
 

Offline toolznthings

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Re: Travis Steam Engine 2 X Size
« Reply #21 on: March 11, 2019, 12:57:36 PM »
More crankshaft work ..........

Setting up the crank to drill and ream for taper pins. Doing the connecting rod journals first with a #2 size pin. Edge find to center position and spot drill four places, drill and ream.
Using a left hand spiral-right hand cut reamer under power. Not a good idea for success to try this with a straight flute style reamer as they tend to grab and will often break.  :o

Same type of setup to do the larger .750" shafts with a # 3 reamer.

A note about installing the taper pins. Be sure the reamed holes are clean and oil free and the same for the taper pin, too. The pins will not seat firmly with oil left over from reaming, etc.

I had long pins on hand and used them for the assembly since I wanted pin stick out on both sides of the hole for the next operation.
Thanks for the visit !
Brian

Online b.lindsey

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Re: Travis Steam Engine 2 X Size
« Reply #22 on: March 11, 2019, 02:01:08 PM »
Coming along well Brian and with those taper pins the crankshaft should be  good and solid as well.

Bill

Offline yogi

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Re: Travis Steam Engine 2 X Size
« Reply #23 on: March 12, 2019, 01:38:41 PM »
That's one beefy crankshaft! Looking good.  :popcorn: :popcorn: :popcorn:


Offline Ye-Ole Steam Dude

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Re: Travis Steam Engine 2 X Size
« Reply #24 on: March 12, 2019, 07:52:25 PM »
Hello Brian,

Great looking crank and quite beefy. :ThumbsUp: :ThumbsUp:

Have a great day,
Thomas

Offline toolznthings

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Re: Travis Steam Engine 2 X Size
« Reply #25 on: March 13, 2019, 12:52:55 PM »
Finish operations on the crankshaft .......

Sawed off the taper pins staying away from the throws as not to mark them. Won't take long to grind off the remaining part even though there looks to be a lot to remove.

Blocked up on the surface grinder for the first side with 1-2-3 blocks. will grind off the pins and take about .001" dust off on the throws to finish. Ran this side dry because I'm to lazy to cleanup
the coolant from the tooling.    ::)

The last side gets the same operation down on the magnet this time with coolant.   :cartwheel:



More parts to come .........



« Last Edit: March 13, 2019, 02:47:40 PM by toolznthings »
Thanks for the visit !
Brian

Offline toolznthings

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Re: Travis Steam Engine 2 X Size
« Reply #26 on: March 13, 2019, 02:47:19 PM »
The end results .........


The final check for run out with the crank running on its bearings. Happy !

Thanks for the visit !
Brian

Online b.lindsey

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Re: Travis Steam Engine 2 X Size
« Reply #27 on: March 13, 2019, 03:00:09 PM »
 :ThumbsUp: :ThumbsUp:

Bill

Offline Admiral_dk

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Re: Travis Steam Engine 2 X Size
« Reply #28 on: March 13, 2019, 09:52:33 PM »
That is a great result with the crank  :ThumbsUp:  :cheers:

Offline jeff l

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Re: Travis Steam Engine 2 X Size
« Reply #29 on: March 14, 2019, 12:56:11 AM »
Great Job !