1st I.C. build "Tiny"

[gbritnell]

Bob,
I just posted a reply on Bill's thread about mounting the Hall transistor.
gbritnell

[90LX_Notch]

Thanks George.  I don't know what I am doing for an ignition system at this point for the engine.


Testing the Spark Plug:

I had planned on rigging up something to test the spark plug at some point in the future.  Then the other day I had an idea to set it up on the lawn mower; but, I have yet to dig the mower out of winter storage. 

Inspired by Bill's spark plug test, I really wanted to give it a try, but it was raining here today.  Then a thought crossed my mind.... "I know I saved the igniter off of an old gas grill before it went to the dump."

Lo and behold I was able to find it.  I'll be damned; the Spark Plug actually works.  BIG SMILE!

-Bob

<a href="https://www.youtube.com/watch?v=9dP74l2_q0Q" target="_blank">http://www.youtube.com/watch?v=9dP74l2_q0Q</a>

[b.lindsey]

That looks like a metal tabletop Bob, was the igniter also grounded to the table? Good feeling to see it work eh?

Bill

[zeeprogrammer]

BIG SMILE!

Kind of says it all. 

[90LX_Notch]

Yes it is.  It is 2 feet x 4 feet, 3/4" thick aluminum plate.  I actually got it for free with an Atlas 618 lathe someone wanted gone from there father's estate.  The lathe must have come from an industrial setting because the Atlas book about running a lathe that came with it had a department listed.  The company must have mounted the lathe to the plate.  It is an expensive chunk of metal for a home owner.

No, the igniter is a self contained unit.  I can actually fire the plug by holding the igniter in one hand and the head in the other.  The spark is significantly weaker, but it is there.

Very good feeling to see it work.  Thanks for posting your video this morning.  It really made me want to see if mine worked since I had scaled it down a bit.


-Bob

[90LX_Notch]

Yes it does Carl.  Thanks.

-Bob

[b.lindsey]

Did you see George's comments on using the hall effect sensor and its mounting? I would highly recommend the CDI system from Roy Scholl.

Bill

[90LX_Notch]

Yes I did Bill.  I just looked at the the S&S site.  That looks like the way to go.  For some reason I thought the system was about twice the listed price.  At $110.00 it makes sense to get it.  I assume that I should order a bunch of extra Hall effect sensors.  It seams as though people burn them up.

-Bob

[b.lindsey]

Bob, you might order an extra one, but I have never had a problem with it myself, though have only used it on one engine so far and that was the Briggs. The original system is still going strong. Just follow Roy's directions as far as orienting the magnet, proper grounding of everything and you should be good.

Bill

[90LX_Notch]

Sounds good Bill.  Thanks.

-Bob

[90LX_Notch]

Crankshaft:

I finally got some shop time and started the crankshaft. 

-Bob

[b.lindsey]

Great Bob. I haven't been able to do anything since Sunday. .
What all do you have left to do?

Bill

[90LX_Notch]

A bunch Bill.  A bunch.

I'm starting to see the light at the end of the tunnel, but....

The to do list:

Crank
Connecting rod
Piston
Cylinder
Flywheels
Linkage
Gears

The gears are going to be the bear.  I've never cut any and I'm not yet equipped for it.  I plan on making the cutter, but I don't have a good way to index.  My spin indexer isn't up for the task. 

If anyone can recommend a good dividing head; I'm all ears.

-Bob

[b.lindsey]

How about the rotary table?

Bill

[90LX_Notch]

My rotary table is a horizontal Bill.  I don't have anything big enough to mount it vertically.   Even if I rotate the mill's head 90; it won't work unless I make an arbor that would have the gear blank sitting several inches in the air.   (Benchmaster fail).

-Bob