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O/T 28 cylinders, 56 plugs, 3,000HP

Discussion in 'The Hokey Ass Message Board' started by Chebby belair, Aug 2, 2012.

  1. Chebby belair
    Joined: Apr 17, 2006
    Posts: 838

    Chebby belair
    from Australia

    Test stand video of the Pratt & Whitney 4360 Wasp engine introduced in 1944. Slated for a Reno unlimited.

    The "corncob" engine was 28-cylinder four-row air cooled radial engine.

    Improper starting technique could foul all 56 spark plugs, which would require hours to clean or replace.

    Turn the speakers all the way up. Bask in the roar of twenty-eight cylinders belching the sound of freedom.
  2. Dane
    Joined: May 6, 2010
    Posts: 1,351

    from Soquel, CA

    Cool! I think I got a stiffy watching the video... :D I wonder how many quarts for an oil change?
  3. EnragedHawk
    Joined: Jun 17, 2009
    Posts: 1,083

    from Waco, TX

    Man that's freaking cool. I just recently started learning about radial engines. Are all radial engines Wankel engines? I started my research with Mazda engines, so I don't know much about anything else yet.
  4. Jack E/NJ
    Joined: Mar 5, 2011
    Posts: 650

    Jack E/NJ
    from NJ

    Wankel's are rotary-type engines with eccentric combustion chambers/pistons.

    And this is a radial-type engine with round combustion chambers/pistons.


    Jack E/NJ

  5. EnragedHawk
    Joined: Jun 17, 2009
    Posts: 1,083

    from Waco, TX

    Cool thanks. I kinda thought it would be different since it's "28 cylinders," but I figured it wouldn't hurt to ask.
  6. Somethin' eerily sexual about that... Or is it just me??
  7. Cutlassboy68
    Joined: Dec 3, 2011
    Posts: 593

    from Boone, Nc

    OOO baby stroke that piston! haha

    That engine must use shit tons of gas.... I WANT ONE!
  8. seb fontana
    Joined: Sep 1, 2005
    Posts: 6,968

    seb fontana
    from ct

    I used to work at Pratt&Whitney..I visited their museum several times which had most models/series radial piston engines they built plus experimental/test ones and rotating cut-a-ways....They also made some Flathead radials!! Called them small diameter engines..While there wasn't a whole flathead radial there was a cylinder barrel with valves and head bolted to it from one..Some huge ports and valves!
  9. garcoal
    Joined: Nov 15, 2006
    Posts: 277


    i to got to work on radials. they defy all known laws of internal combustion. first few of them have a choke as we know it, they would just keep priming them till enough fuel was hitting the ground under the plane then they hit the starter button. on the engine first mentioned the push tubes for the valves were not a staight piece of metal they bent in the middle. it was a 4 row engine, with each row being a feww degrees off so the cyls had a fighting chance of getting some cooling air. they didnt have a cam shaft as we think. they have a cam ring. thats another story completely. the main reason our military stuck with radials so long . was that they thought watercooled engines were to complicated. the radials were tough thou some brought there crews back with some of the cylinder heads literally shot off. but they had little longevity. they required complete overhauls in as little as 80-100 hours of use in some types. if you have heard a big radial idling you can understand why we like the sound of a cammed up engine. and the smell of cam2
  10. Chebby belair
    Joined: Apr 17, 2006
    Posts: 838

    Chebby belair
    from Australia

    Nope, I could poke a hole in a cheap door watching that.

    Maybe I'm sharing too much...:)
  11. That is cool as hell! It would be kind of scary walking around it like those guys are with the prop spinning.

    Sent from my iPhone using TJJ app
  12. OoltewahSpeedShop
    Joined: Oct 18, 2007
    Posts: 3,103


    Holy Shit.... That's just pure BadAss.
  13. justabeater37
    Joined: Jan 1, 2009
    Posts: 1,356


    It says it holds 80.5 gallons, yes gallons and burned/leaked 4 gallons an hour. That will leave a little puddle on the driveway.
  14. pila38
    Joined: Mar 25, 2009
    Posts: 763


    That was sweet.
  15. Deuces
    Joined: Nov 3, 2009
    Posts: 20,123

    from Michigan

    It gave me wood!!!... :rolleyes::D
  16. stude54ht
    Joined: Dec 30, 2007
    Posts: 802

    from Spokane WA

    Can remember as a kid, B-36s from Fairchild AFB near Spokane flying over our school, six 4360s and
    four J47s roaring, had to stop class until they passed!
  17. Stovebolt
    Joined: May 2, 2001
    Posts: 3,379


    Hey T, I LMFAO reading your reply. ;)
  18. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,695

    Member Emeritus

    AMERICAN talent at it's best! I live on the other side of our airport (Paine Field-Snohomish County Airport), where the Flying Heritage Museum, and Future of Flight are both located. They fly the old war birds on sunny weekends, and whenever I hear that "sound", I've got to run outside to look. I grew up on Air Force Bases around the world, and grew up to the "sound of freedom". Keep em' flyin". Butch/56sedandelivery.
  19. noboD
    Joined: Jan 29, 2004
    Posts: 7,628


    56 SD, ever been to the Evergreen Museum near Portland? Amazing place! Thanks for posting the video.
  20. RichFox
    Joined: Dec 3, 2006
    Posts: 10,020


    When I was young I worked on 2800 and 3350s at UAL. You had to be there when they were running one up on the test stand. 4360s were long gone by the time I got there 1965
  21. There is NOTHING, like the sound of a big radial engine, or better yet a quartet of them. We often have the Coulson Flying Tankers, Martin Mars fly over, and I can't resist stopping whatever I'm doing to stand and watch/listen to that big bird!:D

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