MTFCA Forum

I plan to make a flame arrestor for my 5-ball. If I could get someone to measure one and post these dimensions, I could make it closer to the original. H2 and H3 don't include the threaded area. I would also like to see how these are attached at the top. I have a lot of photos and can interpolate but the real dimensions would be nice. It turns out that a 1" toilet overflow tube is the correct diameter. I used these in making some E&J side lamp burners and bought the last of the brass ones I could find. They are the wrong thread, but I can change that. Thanks for any help you can give me.

Hope it helps

A few more

Are the threads 7/8 x 32 or 1x 32?

I have several 5 balls & the thread count differs on a few here are 3 sizes found 1-3/4, 1-1/2 threaded inlet with an 1-1/4 threaded arrestor. In addition I have the early arrestor that is just capped at the top with a flat brass cap not the mushroom looking top. Because I’m too lazy to go to the basement to dig it out, I’ve Attached is a file pictures (courtesy Kim Dobbins) of that early style. Also as a reference, I am told that steel wool or copper wool was inserted inside the arrestor but I cannot verify the assertion though I’ve tried it & it does not impede the performance of the carburetor as far as I can tell. Best John

Thank you John for your responses. That helps very much. My casting threads are 1"-24 tpi. I wondered if there are other sizes also.
I will show the finished item if I get that far.
Rich

Rich as an FYI the overall length is almost 4”. That measurement is important much less than that and you’ll find you have interference with the ball caps. I discovered this with another arrestor, it was slightly shorter and would not thread down to seat. Because the thread is short I was worried that it would vibrate out & off. The only thing I could think of to do was to take the cap off and remove some material off the bottom of the cap. You can’t tell it now but thought you should know as you fabricate one for yourself. Best John

Thanks for that, John. I might not have thought of it.
Rich