Author Topic: 1st I.C. build "Tiny"  (Read 14962 times)

Online Dave Otto

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Re: 1st I.C. build "Tiny"
« Reply #300 on: September 12, 2017, 01:08:50 AM »
Congrats on the new job Bob!
That's great that you were able to be home for your kids in their early years.

We will be here when you find time to work on engines and share your progress.


Dave

Online b.lindsey

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Re: 1st I.C. build "Tiny"
« Reply #301 on: September 12, 2017, 01:10:40 AM »
Congrats on the new job Bob. Life does get in the way at times but that takes precedence over hobbies. I'll be here whenever you get back to Tiny, and just as interested then as I am now. Best wishes in the new position.

Bill

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Re: 1st I.C. build "Tiny"
« Reply #302 on: September 12, 2017, 01:55:01 AM »
Congrats Bob!

Do what you gotta do....I've worked just about every day for the past 15....I hear ya.

Dave
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Damned ijjit!

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #303 on: September 12, 2017, 08:32:20 PM »
Thank you gentlemen for the well wishes.  I have to say,  one finds out how old they are when they are working with people half their age.  I come home tired.  We have been limbing trees in preparation for plowing.  We have over 50 miles of roads that we maintain besides the pools, buildings, parks, etc. 

I plan to finish the piston this weekend if family "stuff" (or exhaustion) doesn't prevent shop time.


-Bob
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Offline Tennessee Whiskey

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Re: 1st I.C. build "Tiny"
« Reply #304 on: September 12, 2017, 11:31:24 PM »
Bob, well I guess I can say: " welcome back to the workforce" , but, there are days I sure would like to be that stay at home dad  :old:. You'll get back in the swing of things. One word of warning from one who employs youth: there are many things they are clueless about, but, getting someone else to do the majority of work isn't one of them. And they are good at it. Just saying. Anyhoo, make swarf when you can.

Cletus

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #305 on: September 13, 2017, 10:57:41 PM »
Thanks Eric.  I have to say, these guys do work.


-Bob
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Offline Tennessee Whiskey

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Re: 1st I.C. build "Tiny"
« Reply #306 on: September 14, 2017, 12:45:54 AM »
That's great Bob. If their heart is really in it, they will usually work with us "old folks"

Cletus

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #307 on: September 24, 2017, 12:20:51 AM »
I was lucky enough to get some shop time.


Piston:

The piston is pretty straight forward.  I made a lap and lapped it while it was still attached to the parent material.  Then it was parted off and the wrist pin bore was drilled and reamed and the pocket for the small end of the connecting rod was milled.  I wanted to ensure that the bore and pocket were perpendicular to each other.  The easiest way that I could come up with was to mount the piston in a small toolmaker's vice with a small vee block. 

A parallel was the bolted to the mill's table and indicated along X axis.  This gave me a datum to bank the toolmaker's vice off of.  The wrist pin bore was drilled and reamed to size first. This was done with the vice on it's side and clamped to the table against the parallel.  For the pocket, the vise was oriented as it normally would be and against the parallel.  This ensured that both the bore and the pocket's geometry were correct in relationship to each other.  The piston was then indicated to get true center and the pocket was milled.  A dowel pin was used to make the wrist pin.


-Bob
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My Engine Videos on YouTube-
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Online b.lindsey

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Re: 1st I.C. build "Tiny"
« Reply #308 on: September 24, 2017, 12:55:28 AM »
Glad to see some progress Bob. I know shop time has been hard to come by.

Bill
« Last Edit: September 24, 2017, 06:59:54 PM by b.lindsey »

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #309 on: September 24, 2017, 06:39:59 PM »
Thanks Bill.  You help keep the spirits alive.


Misc:

I pressed the cylinder into the frame.  The cylinder protruded .017 above the frame's face.  I set up in the lathe with an expanding mandrel in the cylinder and faced it flush to the frame.  I had earlier discovered that the head would not fit the cylinder.  Rather than turn the head, I elected to open the first .070 of the cylinder .001 to fit the head.  Once a nice fit was accomplished the holes for mounting the head were drilled an tapped in the frame.  I assembled everything and turned it over by hand. 

Everything seems good at this point.  The intake opens on the downstroke and there is compression on the upstroke.  I covered the intake port and the piston could not draw air and would pull back from the vacuum in the cylinder.  There is enough compression to stop the piston's travel and bounce it back.

Next will be the linkage, then the gears.  I still have to make the cutter for that one.  We are getting close boys.  Anyhow, here are a few family shots.

-Bob
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Online b.lindsey

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Re: 1st I.C. build "Tiny"
« Reply #310 on: September 24, 2017, 07:04:39 PM »
Great family shots Bob. I wasn't sure exactly where you were and you are much closer that I though!!  Like you say, it shouldn't be too long now, shop time permitting. Very much looking forward to the first pops too!!!

Bill

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Re: 1st I.C. build "Tiny"
« Reply #311 on: September 24, 2017, 10:09:35 PM »
Coming along nicely Bob!

Dave

"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Online Dave Otto

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Re: 1st I.C. build "Tiny"
« Reply #312 on: September 25, 2017, 12:59:20 AM »
Everything looks great Bob!
Lots of very nice work represented in the family pictures.


Dave

Offline rudydubya

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Re: 1st I.C. build "Tiny"
« Reply #313 on: September 25, 2017, 01:16:49 AM »
Looking good Bob.  Nice close-up pictures.  Looking forward to that first run.

Regards,
Rudy

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #314 on: September 25, 2017, 10:23:04 PM »
Thanks so much for the kind words guys.  They are very much appreciated. 

-Bob
Proud Member of MEM

My Engine Videos on YouTube-
http://www.youtube.com/user/Notch90usa/videos