Author Topic: 1st I.C. build "Tiny"  (Read 43953 times)

Offline 90LX_Notch

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1st I.C. build "Tiny"
« on: March 11, 2017, 10:39:17 PM »
This will be two firsts for me: a build thread and an internal combustion engine. 

It's Arv's original version of "Tiny"; it's a bit different then Bill and Dave's "Tiny" builds.  I didn't take a lot of pictures early on but will try to be better as I catch the this thread up to where I currently am.

I started with the fuel tank/base.  The pictures show the use of a mini pallet set on an angle in the vise.  A clamp was used as a datumn along the side and a button was used as the other datumn. This allowed  the part to be easily reset to machine the other end.

-Bob
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Offline crueby

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Re: 1st I.C. build "Tiny"
« Reply #1 on: March 11, 2017, 10:47:28 PM »
Cool! Another Tiny variant!

More popcorn needed....

 :popcorn:

Online steamer

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Re: 1st I.C. build "Tiny"
« Reply #2 on: March 11, 2017, 11:04:30 PM »
Watching along!

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

Online b.lindsey

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Re: 1st I.C. build "Tiny"
« Reply #3 on: March 11, 2017, 11:32:52 PM »
Great Bob. Glad to see yours too. We can give the monitor guys a run for their money. Now we just need two more to join the bandwagon  ;)

Bill

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #4 on: March 11, 2017, 11:54:12 PM »
Chris, Dave and Bill thanks for tuning in.

Once the base/tank was finished I moved onto the frame.  It's pretty much straight up stuff.  My big concern was the bore of the caps and the bore for the cylinder.  These need to be perpindicular to each other.  My Benchmaster mill is old and worn and can't be trammed in Y.  Of course,  it is out of tram in that axis.  So, I made a plate to bolt the frame to, as well as a fixture block.  The frame and plate were bolted to the block and clamped to the faceplate of my lathe. 

I had previously center drilled the location for the bore and used what I call the floating center method to indicate the center drilled spot.  The floating center is where a center is placed inbetween the tailstock center and the work. This center is then indicated and the work is manipulated until the center runs true.

Once indicated the caps and frame were bored.  I had to use my boring head as a tool holder to be able to get the necessary reach.  Unfortunately, I only took after pictures.

-Bob*

*I appologize if this installment doesn't make sense or doesn't read well.  I'm throwing this together at half time of the Big East Tournament.  Go Nova!
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Online steamer

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Re: 1st I.C. build "Tiny"
« Reply #5 on: March 12, 2017, 12:13:46 AM »
Old school!!!!!

Great machine porn!    Love it!!!

5 Bonus points for the gratuitous use of a face plate!   


No really .....I really love faceplates... 8)

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

Offline Dave Otto

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Re: 1st I.C. build "Tiny"
« Reply #6 on: March 12, 2017, 12:39:32 AM »
I agree with Dave, great photos, interesting setups and cool machines!
I will be following along Bob, it's great to see a build come from your shop.

Dave

Online b.lindsey

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Re: 1st I.C. build "Tiny"
« Reply #7 on: March 12, 2017, 12:49:29 AM »
Its great to see different set-ups for similar operations Bob. NO doubt Dave will have some of his own to add to the mix too. Lots of ways to skin a cat   huh? (with apologies to cat lovers).

Bill

Offline crueby

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Re: 1st I.C. build "Tiny"
« Reply #8 on: March 12, 2017, 01:09:20 AM »
Its great to see different set-ups for similar operations Bob. NO doubt Dave will have some of his own to add to the mix too. Lots of ways to skin a cat   huh? (with apologies to cat lovers).

Bill
Our dog is a cat lover.


Especially with catsup!

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #9 on: March 12, 2017, 01:51:18 AM »
Dave- Yes faceplates are our friends.  A post that you made years ago, for I think it was the "Seal", actually got me into using a faceplate.  That plate in the pictures was a giant project in itself. I had to make tooling and gages just to make it from a rough machined 8" backplate. My Rivett has an odd thread size (2 1/16 -10).

I agree with Dave, great photos, interesting setups and cool machines!
I will be following along Bob, it's great to see a build come from your shop.

Dave

Thanks Dave I very much appreciate that coming from you.


Yes Bill, that's what makes machining so great.  So many paths to the same place.

-Bob
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Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #10 on: March 12, 2017, 02:13:11 AM »
With the crank bore done the next task was the bore for the cylinder that goes through the water tank.

The first picture shows the center spot being drilled for the cylinder bore location.

I try to make as much of my tooling as universal as I can.  When I made the block mentioned above I made it with hole patterns that matched my mini pallet.  One set of holes are through holes that allow it to be bolted to the pallet.  Two of the sides are ground parallel and the third is ground perpicular to them.  When bolted to the pallet it creates an angle plate that I can clamp to the faceplate.

A bar was inserted into the crank bore and Jo Blocks were used to set the frame parallel to the faceplate.  The bar was then indicated to verify that it was indeed parallel and the frame was clamped tight and rechecked.

Next the center spot was indicated using the floating center method and the mini pallet and block were tapped until the center was indicated true.  The holes were then bored.

-Bob
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Offline Walsheng

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Re: 1st I.C. build "Tiny"
« Reply #11 on: March 12, 2017, 02:41:05 AM »
Some great setups you have come up with.
I am really enjoying the "tiny" builds going on and one is definitely in my furure.
Has anyone thought of making one from cast iron?

John

Offline 90LX_Notch

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Re: 1st I.C. build "Tiny"
« Reply #12 on: March 12, 2017, 02:59:26 AM »
Thanks John great to have you along.  I don't see why the whole thing coudn't be done in cast iron.  I know George uses a lot of cast iron.  The head for mine is cast iron.

-Bob
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Offline Flyboy Jim

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Re: 1st I.C. build "Tiny"
« Reply #13 on: March 12, 2017, 03:10:40 AM »
Some interesting setups here. I like that lathe fixture plate. Gives me an idea for machining the flywheels for my P & W build.

Jim
Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".

Online steamer

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Re: 1st I.C. build "Tiny"
« Reply #14 on: March 12, 2017, 10:38:14 AM »
Hey Dave Otto....when the flaking is still showing under the spindle nose on a 100 year old lathe...you know it wasn't used much....

That's a real Gem Bob....I'm so glad you found that.

NOPE   it was the oil pump on the Wallaby....my lathe is a bit bigger, but no where near as nice as a 608!

Similar faceplate though.   I really like the threaded hole face plate.   It's easier to set up on.   and a heavy faceplate that's rigid is a joy to work with.   I have a big one and small one on Samantha Bell, the small one has a dedicated pin hole directly on center for a centering pin.    Good stuff!    But OLD SCHOOL....but my shop is my own.

And....for you blokes across the pond who don't know what a Rivett 608 is.....

http://www.lathes.co.uk/rivett/page2.html

There aren't enough superlatives on the planet to describe one........


Dave
« Last Edit: March 12, 2017, 10:50:50 AM by steamer »
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!