Finished modeling up engine, now time to build.

[zeeprogrammer]

Nice stuff Doc....I didn't know it was that small. I think that's the smallest steam chest I've seen.

You have an earlier post about making a 2-56 wrench tool...Sorry I don't understand..but how did you make, or what did you do...to make the hex socket? You mentioned something about a 1/4-20 set screw. I'm new at this...Are you saying the socket for the 1/4-20 is the same size as the head for a 2-56? That you put the 1/4-20 set screw in a tapped hole and turned down the diameter to get rid of the threads and make it smooth?

Thanks.

 

[Brian Rupnow]

Zee---Either a set screw or a socket head capscrew will work. They both have a recess in the head for an Allen wrench, and there is a lot of "cross over" between the hex socket recess and the hex heads of miniature hex bolts.----Brian

 

[doc1955]

Nice stuff Doc....I didn't know it was that small. I think that's the smallest steam chest I've seen.

You have an earlier post about making a 2-56 wrench tool...Sorry I don't understand..but how did you make, or what did you do...to make the hex socket? You mentioned something about a 1/4-20 set screw. I'm new at this...Are you saying the socket for the 1/4-20 is the same size as the head for a 2-56? That you put the 1/4-20 set screw in a tapped hole and turned down the diameter to get rid of the threads and make it smooth?

Thanks.

Thanks!
Yes it's small (for me anyway) my eyes aren't what they use to be. I had to use my magnifying glass a few times.
Next build I do will be a little bigger. I'm thinking for my next engine it may be one I seen in the Machine Shop magazine. a IC with osculating cylinder I have never seen one of these running only seen it in the magazine. Anyway I'll decide that at a later date.


What I did was drill and tap some 1/4 dia. stock turned in a 1/4-20 unc set screw and yes basically turned the threads away on the end.


Haven't done much in the shop all week been not a real good week at work. I hope to do some work on my build tomorrow if I can sneak away for awhile.

 

[mklotz]

If you're not in the mood to make your own, you can buy a set of Moody (the industry standard) nutdrivers for about $15.

http://www.micro-tools.com/store/item_detail.aspx?ItemCode=58-0142

 

[doc1955]

Well I did sneek away to the shop the afternoon for awhile.

Here is some of what I accomplished.

Squared up stock for link mounts.

Drilled holes in stock pieces that are to size.

Cut end cuts to size.

Finished pieces I hand ground a radius cutter and used my fly cutter again similar to other bearing mounts I did earlier.

Next I worked on some of the links. First I roughed out some stock and drilled holes.

Then I created a little jig to hold parts I drilled holes to match link and drilled them through the block.
One of the holes I drilled and tapped 10-24 unc for a stripper bolt (shoulder screw).

I grabbed my shop aid block that I previously used and drilled and reamed for the stripper bolt .500 dia.

I flipped block over and spot faced back side so the the stipper bolt shoulder was about .005 above. In other words the shoulder on the bolt was .005 longer than the thickness of the block at the spot faced hole.

Next I mounted the block I drilled the hole pattern in and tapped the 2 holes on the top side to 2-56 to mount link blanks.

Blanks roughed out.

ooops! Tried to take too much at one time and scrapped 2 of the blanks.

Cutting radius with jig.

Finished link too bad I need to step back and make 2 more blanks and do it again.

 

[ksouers]

Gee, Doc. I thought I was making tiny parts.
Those things look way smaller than anything I've done.

It's really easy to get a case of get-it-done-itis. But that's when you really need to slow down.
Don't ask me how I know :

 

[doc1955]

Well finished links today I remade the first ones I made as I had an error.
Here are the completed links.

Hope to get out in the shop again tomorrow for a while in the afternoon.

 

[zeeprogrammer]

Geesh. Very nice.

 

[doc1955]

Thanks
Honestly I'm glad those are done started getting bored with making them.
Think I'll do some lathe work tomorrow.

 

[doc1955]

Well I did get away for a bit and did some lathe work.
Worked on the cylinder head.

Squared up stock for 2 cylinder heads.

Getting it close to location in 4jaw.
The stock is .625X.75 and I want the diameters I'm turning on center of the .625 and .3125 from the edge on the .75 dim. So after centering with indicator on the .625 width don't touch indicator and move stock to zero on the .75 that will put it centered 0n the .625 and .3125 from edge on the .75 width.

Turned one end and flip and turned opposite end.

Moved to a 2c collet to part off the parts with the part off blade.

Now back to the mill to drill hole patterns.

Parts finished.


Getting close to assembly time. Could start assembling some of the parts.

 

[doc1955]

Well got a little shop time today started on the eccentric .

The 2 halves together and clamped in mill to rough in hole to be used on the lathe to dial in on.

After hole roughed in ready for lthe work.

Bored ID and step flipped and dialed in and bored step on back side.

Grabbed a piece of aluminum to turn up a spud on it for a little holding jig.

Now don't laugh, again I used what I had laying around to create this little gem of a holding jig,

One roughed out one to go.

Here they are roughed out.

Getting closer but it will have to wait till next time.

 

[Deanofid]

What a good way of doing things, Doc. Thanks for showing that!

Dean

 

[doc1955]

Well didn't feel to good last couple days have a bad head cold.
But I made it out to the shop for a while today and worked on the connecting rod.


Layout some scribe lines to mark ends.

Turned up the blanks.

Then parted off the rod end caps.


Had the safety inspector show to keep a eye on things.

He had to check to make sure things were per spec.

Drilled rod cap holes to assemble them to drill the .250 dia.

Getting holes orientated with an adjustable parallel yes yes this will work I think.

Getting ready to drill .250 journal hole dial in center and pick up end.
Just had to double check me again it's on zero isn't it?

Well does it pass inspection?

Here is the final product.

 

[Maryak]

Doc,

Very nice work. :bow: :bow:

I particularly like your N(urse). Where did you find she/he/it. ??? ??? Great way to present you piccys and parts. :bow: :bow:

Best Regards
Bob

 

[doc1955]

It is the Dominoes Noid was a popular commercial figure back few years ago like 20 0r 25 years ago.
It was always avoid the Noid. :big:

[ame]http://www.youtube.com/watch?v=jVeNr9aE8cU[/ame]

 

[zeeprogrammer]

Great post Doc. The detailed pics are very helpful.

I remember the noid...I can't believe it's been that long ago.

 

[putputman]

Hey Doc, watch out for your buddy Noid. He finally got to Dominoes. They had to change their entire recipe.

 

[doc1955]

:big: :big: You're right never thought of it that way but they did supposedly have major changes.
I'll keep a close eye on Rick the Noid.
Thanks for the heads up.

 

[doc1955]

Put a few pieces together today.
I need to order some brass rod for some of the parts needed.
I'll order some tonight .25 dia is what I am needing until then I still have a couple parts to make and two more link rods. Getting close to being complete.

 

[Deanofid]

Great stuff, Doc, but.. The Noid is your inspector? I'd be annoyed.

I remember those ads so well. Didn't know it was that long ago! Time flies when you're machining, or eating pizza.

Dean