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Thread: OMC’s 4-Rotor Wankel Racing Engine - The Real Story

  1. #241
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    Quote Originally Posted by Mark75H View Post
    Sorry, 100 blips of the throttle doesn't do anything for me ... I go with the long whine stretching it out on the straight
    The competition complained - therefore they were only allowed to run it on three rotors, hence the funny sound LOL

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    Sam Cullis Mark75H's Avatar
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    Not complaining about how it sounds ... what turns me off in that video is that it never runs over idle for more than a half second at a time ... that does not impress me that you are hearing the sound of the motor at speed
    Since 1925, about 150 different racing outboards have been made.

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    Well Sam, I did see and hear them at Paris - spine chilling stuff. OMC always seemed to be good for weird surprises in the racing environment, starting off with the GT115 and the loop charged 3-cylinder, continuing with the Stranglers, the CC and CCC, the Wankel and the V8s. Always a technological tour de force, with astonishing improvisation skills successfully applied to engineering.
    After all, no outboard manufacturing company ever had the financial means of the giants in the automobile industry.
    Being an engineer as well as a trained engine builder, I did enjoy live all of the above race engines, but only raced the 3-cylinder myself, in SE form. However, when I saw Angelo Vassena`s OE at Brodenbach, my eyes really opened wide!
    I still have about five shoe-boxes full of docs and photos to scan and send to BRF. Might need some assistance with dating the lot. rgds.

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    Default Please post!

    Hello Wolfgang,

    Your docs and photo collection sounds great! Please - please - please scan and post for all to see!

    Tim

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    Preserving OMC Heritage LIQUID NIRVANA's Avatar
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    Bring it on Wolfgang, we sure would like to see everything you've got. Do you have any audio or "video" of the Rotary's... Very Very RARE. The one I have posted took years to find. It would be GREAT to hear one at full song.

    Kind Regards Ken

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    Burgess/Evinrude F1 V8 Lars Strom's Avatar
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    Default PARIS Six Hours 1974

    I think this very nice picture should be on this thread..
    Attached Images Attached Images  
    Lars Strom

    Life is good

    Check my own racing history at BRF...http://www.boatracingfacts.com/forum...ead.php?t=6727

    My racing web site SVERA.se....http://svera.se/blogg/paris-6-hours/

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    Default Rotary Conversion

    Quote Originally Posted by Techteam View Post
    Picky Picky

    Ok I don't want to hijack the best thread on the board but just to convert Mark75H to rotary power:

    http://www.youtube.com/watch?v=upeNfS4sIgU
    Do you mean something like this?

    Tim
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    Sam Cullis Mark75H's Avatar
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    Quote Originally Posted by Mark75H View Post
    Not complaining about how it sounds ... what turns me off in that video is that it never runs over idle for more than a half second at a time ... that does not impress me that you are hearing the sound of the motor at speed
    No need to convert me. I loved my cousin's Mazda the first time I rode in it back in the mid-70's.

    I was not impressed with the "race" car at idle ... a waste of inconvenienced electrons.
    Since 1925, about 150 different racing outboards have been made.

  9. #249
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    Quote Originally Posted by Mark75H View Post
    No need to convert me. I loved my cousin's Mazda the first time I rode in it back in the mid-70's.

    I was not impressed with the "race" car at idle ... a waste of inconvenienced electrons.
    The 20B rotary "brap" isn't much different than the thrashing idle of a roller cam small block, or the rythmic surge of an idling blower motor....... All tell a story of enormous power about to be unleashed!

    Tim

    BTW: Always especially liked the "cackle" of a Merc 2 liter at idle...

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    Many thanks Lars. Great photo - Jimbo and Renato. Looks like the boat in which Renato won the European championship in Guels on the Mosel river (near Koblenz) in about 1972. I still have a (soundless) videoclip of some of the heats. Completing the first lap, Renato almost lost it getting round the pit buoy.

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