Galloway 1/3 scale engine build

[Jasonb]

Thanks for the reminder. Just been and measured mine and it is to George's drawing 6.474" from cam follower stud to middle of slot

[AZDesert]

I have not totally solved that yet but I think the main problem is I need a little more clearance on the valve rocker arm bracket to allow more movement of the arm which will let the push rod come back further.  This should allow the slot for the trip lever to align better.  I may need to make some slight adjustments to the trip arm and ignitor when I am ready to actually set the timing to get it just right.
I recently made a low tension coil and tested the ignitor and it seemed to work well, however I have not yet soldered the tungsten tips on.  I have read that brazing is the best way to attach them.  Any advice for this process.  The tiny little piece that goes on the ignitor arm seems like it could be difficult to braze in place.

Thank,

[Jasonb]

I used silver solder.

Solder the arm onto the end of a tig electrode then cut it off with a dremel sheel and grind to final shape. No little discs of TC to hold if done that way.

[gbritnell]

I think what Jason meant was Dremel grinder with a diamond or abrasive disc. .03-.05 thick carbide button will last forever.
Here's another trick you can try.  Chuck the piece of Tungsten rod in the lathe. (COVER THE WAYS) Using the Dremel grinder a little stem on the carbide rod.  .06 long is more than enough.  Drill a hole in the arm to match the diameter of the stem. When you silver solder it it will keep it aligned.

[AZDesert]

Thanks for the ideas on the tungsten.  I will give that a try.  Here is a picture of the coil I made.  I added a little switch so i can turn it on/off.  Did a quick test and got a decent spark.

[AZDesert]

Some questions about assembly of the engine.  I have everything primed (except the flywheels) and want to assemble it and maybe even do a test run before I do final color paint.

Any recommendations on what to use for a gasket for the head and ignitor?  Assuming I want something to help seal these so I don't have leaks.

For the finish paint I took the color codes that were given above to my local automotive paint store and they were not able to match them to anything close to the red.  Any other recommendations to help find the right red?

Timing set up.  When looking at the positioning of the Cam lobs relative to valve movement I am seeing when the lower lobes push the rod forward the rocker arm is just touching the exhaust valve.  It seems that there should be a little bit of clearance between the arm and valve stem as those lower lobes rotate and then are should engage the valve stem to open it when the upper lobes push the rod forward. 

Any other watch outs to be aware of when assembling the engine?

Thanks to all for your help.

[cnr6400]

Just a thought re paint match - if you have a sample of the colour you want, you can take it to a good name brand house paint store and they can read it with a photometer and give you a "recipe". I've done this with a few parts with a local Sherwin-Williams paint place and their "recipe" was a very close match. Good luck!

[gbritnell]

https://www.mcmaster.com/product/9402K21
I use this for head gaskets on all my engines. It works great

[Jasonb]

I can't see that without logging in but I just use a liquid gasket on all my engines be they IC or steam.

You want a thou or two of "lash" clearance between the rocker and valve. The clevis on the end of the push rod should give some adjustment of the gap.

[Dave Otto]

I can't see that without logging in but I just use a liquid gasket on all my engines be they IC or steam.

You want a thou or two of "lash" clearance between the rocker and valve. The clevis on the end of the push rod should give some adjustment of the gap.

Just search McMaster 9402k21

[internal_fire]

McMaster is somewhat notorious for refusing to ship outside the US, but that material is made in Austria, so it is probably available everywhere.

Gene

[Art K]

Jason,
Funny enough the link didn't work for me but google McMaster Carr going to the website typing the part number into the search gave joy. I have been using.015 PTFE sheet. It can get in almost any size.
Art

[AZDesert]

Making some good progress again on the engine.  I finally made it back to the farm and was able to use my dad's lathe to clean up the flywheels and get them ready.  My lathe is a little to small to handle them.  Once I got back home I was able to mount the governor and make it's spring.  The next step is to cut the keyway slots.  I was also able to assemble the fuel tank and start to think about how to mount it.  Getting close to being able to try to fire it up and see if it will run!

[CI]

Looking good !

.

[AZDesert]

Moving a little closer to being done with the Galloway engine.  I took some inspiration from the cart that Jason built in his post and came up with my own version of a cart.  Rather than build my own wheels i am purchasing some antique cast iron wheels that I will clean up and use for this project.  Since my last post i have finished the fuel tank and mounted it and got a fuel line hooked up to the carburetor.   I have not started the engine yet but getting close!