What real Nostalgia PC Carrier engines look like; 1975 era....

First picture Duke Fox signed Fox .36, #2 of the first 3 made. Engine #1 was used to Win the 1975 Nat's.
Second Picture Fox Box
Third Picture The "Temporary Owner's Manual"

We can't expect these 1975 era engines to compete with modern engines; the 20 engine bonus points should be 80-100 to level the playing field.

I don't remember the exact details, but we found a Fox factory LH crank that worked in this engine. I'm sure Paul Smith will know which one it is. 

I fiddled with two or three of those engines with no success.  I never witnessed anybody else who got good or even fair performance. 

Hummmm,,

I flew in the 1975 Nats and it looked like ALL ST 35CRC to me.  At that time the law of the land was "stock plain bearing throttled engines".   

I assembled a Mongoose with one of those Fox Carrier Specials for the local hobby dealer and it just didn't work.  That's not to say the others didn't work.  Spotty quality was a Fox standard, at least until the Mark III Combat & beyond.

I played with the Fox PC engine during that period.

Gerry Deneau purchased one of those engine directly from the trunk of Duke’s car at the ‘75 Nats. We went back to the dorm and he promptly took it apart to examine the innards and workmanship. He used it on one of his next models but the overall handling and performance left a lot to be desired.

A ST Mark 4 carb helped the handling a lot. The Fox carb was workable but inferior to the ST carb. Several years later I discovered the OS 4B and 7B carbs. They were great. But by then the the Fox PC engines had been relegated to a box on a shelf somewhere in the basement. Being the pack rat I am, they are probably still there.

During the time when plain bearing engines were required but you could modify the engine, I tried stuffing the ABC P/L from a K&B 5.8 in the Fox case. That didn’t go well.  The case was too thin for the larger OD sleeve.  I ended up making press in plain bearing slugs to replace the ball bearing in the 5.8.  That worked very well but the small bearing surface area only lasted a few runs.

This whole thread is Nostalgic!  I started with an LS tuned  36x  made with plain bearing.  Worked good enough to compete but fiddly carb.  Tried  testors .35. Dog.  Tuned up a ST .35 and never looked back. Great motor. Used 62%.  TS

The 'King' of PC engines in the 1970's era was the ST C35. I don't believe any other 'plain bearing' engine dominated like the ST C35. Running high nitro, Tornado 9-8 plastic yellow nylon props, the stock STC35 plain bearing engines won a lot of local & National carrier events.

Some ST C35's were 'Beasts', winning multiple National Championships in Jr. Sr. and Op. PC. No other PC Plain bearing engine performed to this level, not the Fox or McCoy.

A True Nostalgia engine: the ST C35 pictured is the 'Daddy' of all ST C35's, it has been sitting in a box for 47 years after winning 3 consecutive Open National Championships in a row, a bit dirty, promise to clean her up and make her look as good as new.