Cameron .09 fuel line...

706jim wrote:The Fox "Rocket 0.099" engine had a fuel tank and the line just pushed through a hole in the casting. Kind of a disappointment compared to the more eloquent Cox designed 0.049's that it was competing with. And to make matters worse, the engine mounting bolts also kept the gas tank from leaking.....

There are many engines with integral tanks where the fuel line simply pushes into the tank, and sealing is purely from having the line a tight fit-many of the British front rotary diesels were like this-some of the later DCs, the Frog engines, JB Atom and Bomb, the AM 10 and 15,ED Baby, Pep and Cadet, the early metal tank MEs, and from Japan the OS Pet-II and Fuji 099s

The Fox 09 also had beam mounts...I wouldn't be overly keen radially mounting an engine with that much overhang.... You can find-from time to time on Ebay-examples of the Fox where the tank portion has been machined off down to where the backplate seats, presumably by people who wanted to reduce overhang even in a beam mount situation..

ChrisM
'ffkiwi'

Imagine an 11 year old kid trying to radially mount that Fox 0.099 with 3-48 nuts held behind the firewall with Ambroid glue. Good luck with that!
Shortening the crankcase would have been an improvement and beam mounted.
Or just buy a Cox 0.049. Both engines probably developed the same horsepower.

Nice looking Cox Champion racer with the Cameron .09 engine, @lenstar65. I guess back then, they used black rubber hose for fuel line. Thanks for the photos, I learn something new every day.

706jim wrote:Or just buy a Cox 0.049. Both engines probably developed the same horsepower.

Jim, on the .09 Fox Rocket, I did a little research on the engine articles in Sceptre Flight Engine Tests. Except for the .049 Tee Dees and .074 Queen Bee, the .049 reed valves are out may be with the exception of the Killer Bee and Venom. But those engines are all high RPM engines, which may be unsuitable for the heavier weight of the Champion car. I don't think the Cameron was a very high RPM engine, developed torque at lower RPM's, just my gut level feelings.

There's a write up on the Cameron .09, appears to be the same engine adapted for marine applications. Gives technical construction explanations, but no test runs.

http://sceptreflight.com/Model%20Engine%20Tests/Cameron%20.09%20Marine.html