Author Topic: Design and build side shaft hit and miss engine from bar stock  (Read 28361 times)

Offline zeeprogrammer

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #30 on: November 19, 2018, 12:51:57 AM »
I've been following along Brian. Always something to learn.

I've never heard of Nicrobraze. I'll have to look that up.

Regarding photos...sometimes I use the contrast and brightness controls in a photo tool to help lighten up or bring out features.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Offline Brian Rupnow

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #31 on: November 19, 2018, 12:59:44 AM »
I've never heard of that. I will ask my welding gas supplier about it. Thanks.---Brian

Offline crueby

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #32 on: November 19, 2018, 02:09:41 AM »
I've never heard of that. I will ask my welding gas supplier about it. Thanks.---Brian
There are a couple of versions, I am using the Nicrobraze 'Green', which comes in a pen type applicator, like the old car touchup paints. I bought it online. Other people have used whiteout for the same purpose, but it has a tendancy to turn very hard and glassy, and be hard to get off again after heating. The Nicrobraze comes off easily. Does not take a lot, just paint a little on the surfaces you want to keep the solder off, let dry, and solder away.

Offline Art K

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #33 on: November 19, 2018, 03:25:27 AM »
That sounds like a great idea. I will have to keep that in mind when I am doing a similar project.
Art
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Offline gerritv

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #34 on: November 19, 2018, 04:03:02 AM »
Brian, several of my cameras, even the cell phone, have a Force Flash setting that comes in handy for those cases where the camera will not obey your needs. I use Adobe Lightroom for editing but prefer not to do that for what are essentially snap shots.

Gerrit
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Online Jasonb

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #35 on: November 19, 2018, 07:15:10 AM »
Tipp-ex correction fluid does the same job and stops parts soldering together, use the solvent based one.

Offline Brian Rupnow

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #36 on: November 19, 2018, 02:26:14 PM »
As I suspected, the welding fixture had to be cut away after the silver soldering was completed. This was not really a matter of the solder sticking to the aluminum welding fixture. It's just that the brass pieces were a very close tolerance fit into the aluminum fixture. When I make an aluminum fixture like that, about half the time parts of the aluminum melt while the silver solder is being applied. It doesn't bond to the brass, but it manages to mechanically lock to the brass weldment. It cut away very cleanly and the soldered joints came out looking very good.


Offline Brian Rupnow

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #37 on: November 19, 2018, 05:58:02 PM »
Not quite there yet, but getting darned close. Both of my bevel gears came in, still waiting for helical gears. I have a bunch of "real" work calling me so probably won't post anymore of this today.---Brian

Offline Craig DeShong

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #38 on: November 19, 2018, 11:03:18 PM »
Looking good Brian.  It's going to interesting to see this engine materialize; especially after just finishing the Myers that has versions of the same components.
 :popcorn: :popcorn: :popcorn:
Craig

Offline Brian Rupnow

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #39 on: November 19, 2018, 11:59:03 PM »
Craig--I'm not entirely happy with the governor.  The maximum travel I can get on the sliding collars is about 0.090". I have more "fettling" to do before I conclude whether this design is going to work for me or not. I only have a couple of small things to tidy up and a spring to buy to finish the governor, so I should know this week if I can make this work for me or not.---Brian

Offline zeeprogrammer

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #40 on: November 20, 2018, 12:56:15 AM »
so I should know this week if I can make this work for me or not.---Brian

We already do know.  ;D
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Offline Brian Rupnow

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #41 on: November 20, 2018, 01:16:18 AM »
Zee--I have had success with larger flyball type governors, but this one is surprisingly small. The two brass cams are way below my comfort level sizewise. Links and levers I'm comfortable with, but this is kind of a different horse. I have to build a "limiter" somewhere in this mechanism, because if the "cams" swing out beyond 45 degrees, they lock up and can't get back.

Offline Roger B

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #42 on: November 20, 2018, 09:52:01 AM »
I'm following along  :wine1: I'll be intersted to see how the governor works out  :)
Best regards

Roger

Online Jasonb

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #43 on: November 20, 2018, 10:03:09 AM »
how much total movement are you needing Brian? you should be able to gain more movement from the lengths of the pick part and  L shaped arm by adjusting the lengths of each relative to their pivots. At the end of the day you probably only need 1/8" movement of the latch, maybe less.

Offline Brian Rupnow

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Re: Design and build side shaft hit and miss engine from bar stock
« Reply #44 on: November 20, 2018, 03:43:25 PM »
Maybe so Jason.--still playing with models of it.