Author Topic: Chris's Build of a Stanley 735 Engine  (Read 44334 times)

Online cnr6400

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Re: Chris's Build of a Stanley 735 Engine
« Reply #495 on: February 21, 2020, 11:06:09 PM »
I'd like to meet that shop goat's dentist - it must have HSS teeth to get through that bronze so nicely!  :Lol:   :cheers:
"I've cut that stock three times, and it's still too short!"

Online crueby

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Re: Chris's Build of a Stanley 735 Engine
« Reply #496 on: February 22, 2020, 08:26:53 PM »
I'd like to meet that shop goat's dentist - it must have HSS teeth to get through that bronze so nicely!  :Lol:   :cheers:
He looks cute in his little shop apron and safety glasses though!

Online crueby

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Re: Chris's Build of a Stanley 735 Engine
« Reply #497 on: February 22, 2020, 08:30:40 PM »
Finishing up the crosshead guides, drilled/tapped the mounting holes in the ends, and drilled through the oil holes in the middle.

Milled a narrow slot in the tops - the original had more shaping around the sides too, too small at this scale to mill in those kinds of cast-in features.

The rails installed:

And the obligatory family shot:

Next up, will work on the slide links for the reversing gear, as well as the control arms for it. Then it will be down to the crankshaft end of things.

Online tghs

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Re: Chris's Build of a Stanley 735 Engine
« Reply #498 on: February 22, 2020, 09:16:42 PM »
that was fun to watch..they look great..
what the @#&% over

Offline Johnmcc69

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Re: Chris's Build of a Stanley 735 Engine
« Reply #499 on: February 22, 2020, 10:13:02 PM »
Very nice family shot! Pretty nice display of the relatives in the background as well.  :ThumbsUp:

 & not a single elf on sight.... "Photo bomb" free.

 Terrific work Chris!

 John

Online cnr6400

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Re: Chris's Build of a Stanley 735 Engine
« Reply #500 on: February 22, 2020, 11:45:59 PM »
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:
"I've cut that stock three times, and it's still too short!"

Online crueby

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Re: Chris's Build of a Stanley 735 Engine
« Reply #501 on: February 23, 2020, 12:00:42 AM »
Thanks again guys. Just spent some time digging through the drawer for my slide link jig, finally found it! The elves were rearranging again...

Online Kim

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Re: Chris's Build of a Stanley 735 Engine
« Reply #502 on: February 23, 2020, 01:18:25 AM »
That was an interesting way to get shape your cross-head guides, Chris!
Looking great!

Kim

Offline zeeprogrammer

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Re: Chris's Build of a Stanley 735 Engine
« Reply #503 on: February 23, 2020, 01:51:06 AM »
The elves were rearranging again...

See what I mean?  ;D
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
"To work. To work."
Zee-Another Thread Trasher.

Online crueby

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Re: Chris's Build of a Stanley 735 Engine
« Reply #504 on: February 23, 2020, 02:07:19 AM »
The elves were rearranging again...

See what I mean?  ;D
Yeah, but I can't complain openly too much, they read this forum too!  :Lol:

Online crueby

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Re: Chris's Build of a Stanley 735 Engine
« Reply #505 on: February 23, 2020, 05:03:45 PM »
The goal this morning was to whip up a pair of slide links for the reversing gear. Started by bolting my handy-dandy slide link jig to the rotary table - used this one on several engines, useful both for the slide links and also to drill/trim the eccentric arms using the clamp bar in the middle and a eccentric-plug at the center pivot. So, measured out to where the links would start, clamped on a pair of blanks, and drilled/tapped through them into the jig. Then chain drilled the slot:

and milled it out to dimensions

Switched to a larger end mill, and trimmed off the outer arc and the ends:

then back to small mill to shape the inner arc and the lugs

A final pass on each piece seperately to take the stock down to the final thickness, and a little cleanup of the corners on the belt sander, and test fit on the tie rods:

Last bit on the slide links will be to make the sliding blocks that go in the slots...

Online crueby

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Re: Chris's Build of a Stanley 735 Engine
« Reply #506 on: February 23, 2020, 06:52:04 PM »
Finishing up the slide links with the little blocks that slide inside the slot. Started with some small bronze bar, drilled the center hole on the lathe, then squared it up on the mill with the chuck held in the rotary table:

Parted off the blocks:

and assembled them into the links:

and the links back onto the engine (hard to get an angle with a clear vire of them with all the other rails around the sides) :

All seems to clear and move well, so next will move on to the control levers. There is a pivot bar on one side that gets a crank, with levers down to the lugs on the ends of the slide links - those are the holes visible in the last photo at the closer ends.

Online cnr6400

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Re: Chris's Build of a Stanley 735 Engine
« Reply #507 on: February 23, 2020, 07:41:27 PM »
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:
"I've cut that stock three times, and it's still too short!"

Online Kim

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Re: Chris's Build of a Stanley 735 Engine
« Reply #508 on: February 24, 2020, 01:12:51 AM »
Pretty slick, Chris.  :popcorn: :popcorn:

So you just made the followers square?  No arc?  Guess if they are short enough, that won't matter.

Kim

Online crueby

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Re: Chris's Build of a Stanley 735 Engine
« Reply #509 on: February 24, 2020, 01:38:03 AM »
Pretty slick, Chris.  :popcorn: :popcorn:

So you just made the followers square?  No arc?  Guess if they are short enough, that won't matter.

Kim
Yes, at only 0.110" across, on a 3" arc, the side arc would be teensy, and it only slides when moving the control lever. Figured it was fine as a square.

 

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