Growing up in the 70s, I learned the fine art of how to sting curse words together trying to get/keep these little SOBs running. Those were the days.

“In the thousands of an inch” - today’s engines are 2/10000ths if not tighter

I had these as a kid in the 60s . You got really good at taking the fuel tank off to clean grit from the reed valve. If there was even the tiniest speck of grit in there the reed wouldn’t seal and the motor would not run. In the later 70s I flew RC planes and on my smaller planes I used the TD engines which were rotary valve and not as temperamental about dirt.

Wow! lovley advert, I had these engines as a kid, I have one now in the garage, it's never run, I must fish it out and try it

Awesome video, I just bought two of these at a yard sale.

I always wanted to make an RC P-38 using .049s because they are cheap and can run either left handed or right handed.

thank you! i always wanted to know how these worked.

Very cool 👍👍

I want one 😭