Cox Catalog 1967

I didn't know #2 glowhead:

I think the trumpet shape #3 dates back to early production runs. Later high comp heads are dome shaped , though less in volume than #1?

Thank you Levent for posting the link, good to go back in time to when COX toys were still accessible - at least in some parts of the world ..

Those who saw the WW2 film with Peter Fonda, the Battle of the Bulge will recognize the L4-Grasshopper as the reconaissance plane the US forces deployed to find the German tanks in the Ardennes...

balogh wrote:I think the trumpet shape #3 dates back to early production runs. Later high comp heads are dome shaped , though less in volume than #1?

I thought it interesting that the .020's used #2, which was conical shaped. As far as I can remember, my 2nd Pee Wee bought in late 1972 had the hemispherical shape, so I guess they dropped the cone may be shortly before then. The hemispherical combustion chamber or "hemi" was a big thing when I was in high school. I remembered the US muscle cars then such as the Dodge Challenger and Charger advertising their engines as being more powerful having this feature.

Regarding the trumpet shaped combustion chamber, I thought it interesting that some of the 1963 A.C. Thunderhead engines had that, it was very prominently noticeable when I purchased additional .11 replacement heads some time back.

balogh wrote:Those who saw the WW2 film with Peter Fonda, the Battle of the Bulge will recognize the L4-Grasshopper as the reconaissance plane the US forces deployed to find the German tanks in the Ardennes...

In Summer 1971, I purchased a new L-4. Had a one-shot flight at a beach park in a village called Maile (west coast of Oahu island in Hawaii). There, we almost always year round had 15+ mph tradewinds blowing all the time. These half-A's with high lift undercamber wings don't do too well in CL circles. (Lift flying into the wind, dropping against the wind) with very low time pilots.

It was very pretty in the box though, molded in a really nice Olive Drab plastic. The clear plastic canopies and windows always fascinated me. It was difficult to keep plastic cement on kits off of them, without putting glue finger prints on them. New, loved the clearness of them always. Airplane seemed more real if it had clear windows to see inside.