12 thoughts on “Another Primer to suffer through…

  1. I am really enjoying these Primers…keep em’ coming Ceder and Nuckles!
    I put all the post under “Tools and Shops” on a Flash Drive for future reference.

    Remember folks: SELF-SUFFICIENCY is what is going to keep you alive in the upcoming spicy years. You have a skill that needs fine tuning? Well there are plenty of people to learn from if you just look around.

  2. There is a video of how a rotary works on You Boob. A wood model that moves and shows the crank, valves, and cam action.

      • Yes, kid37, a shame that the paucity of available spare parts leads operators of many warbirds, and racers too, to switch out those classic British sleeve valve radials for more available American, or even Russian, power plants. That larger single sleeve unit running up and down eliminates all those more failure-prone valve parts of the inlet and exhaust valve units. Trouble being, no matter how superior a design or just the emotional appeal of a classic design, if spares, or entire spare engines, are not readily available, then that aircraft can’t be relied upon for displays at airshows, or for classic airliners like the Junkers Ju 52/3M or Douglas DC-3, possibly weeks just sitting there not earning money on joy flights, be they charter or regular service. Both those examples have the worldwide supply chain of many decades of.Pratt & Whitney spares or complete engines (BMW copies of the Hornet in the case of the Tante Ju) production, as OEM stores or certified copies. The tiny Avro Anson is the sole sleeve-valve engined aeroplane I can think of that would be operated anywhere on a regular basis. Radial engine fans and any warbird enthusiasts should do themselves a favour, by planning to get close to a Hawker Sea Fury when it’s sleeve-valved Bristol Centaurus cranks over and sits until it’s operating temperature is attained. I know that many racing versions of the Fury have been reengined to Wright R3350 or P & W R2800 plants for servicibility, but the Bristol donkies just seem to have that extra ‘horn’ value.

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