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Are there any VIDEO's with sound out there of these motors.

Thanks John. I received both emails and responded to George. Hope I can help.

Ken
liquidnirvana@y7mail.com

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...

At least we know that is not the Rotary Sound.


The search continues my friend.. I will NEVER give up.


Ken

I believe there are 4 race OMC rotary's still around, maybe even 5 :eek::eek:. 2 definately in a private collection. John S. knows more. Could be at least one at BRP, but trying to penetrate the BRP...

Here is a little more information written by JOHN SHELDON, the chief 'inside' contributor to this wonderful thread. Without him it could be safely assumed that much of the inside story of the OMC...

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The OMC 6hp Prototype Rotary outboard powerheads
...

Sorry I missed this John. The "Mac" name caught me unawares.

Ken Finlay.

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...

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http://inlinethumb05.webshots.com/42116/2747186470101354590S600x600Q85.jpg

I drop this in just for historical significance. OMC were into different propoltion units all through their history. Even...

Probably because they were running the 15:17 gear ratio used in the previous Parker Race, plus the boats were designed for V4 & had a tendency to barrel roll on turns with the Rotary power.

Wayne, you are amazing.

Do you have editorial available through any of your boating magazines on the Rotary racing & results from '73 to '76. Anything you may have or anybody else would be...

Random EMAILS from John Sheldon,

I am posting as they were sent to me. This is very cool stuff & gives a tiny insight on the OMC Rotary program.

Ken:
I already talked to BRP. They have no...

Click on the picture and then go to FULL SIZE to make it bigger

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...

There are four of the latest & greatest 1976 OMC Rotary's unraced & complete with Dyno sheets, & still in their boxes out there somewhere & I BET I KNOW WHERE as well. They are VERY DIFFERENT to the...

http://inlinethumb23.webshots.com/41430/2819077820091848696S600x600Q85.jpg

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...

Wayne (Master Oil Racing Team), your posts are exceptional, your tenacity in bringing them to us, inspiring, and your love of taking the time to share, to collect, to photograph, to collate, to...

CLICK ON THE PICTURE & then "FULL SIZE" to make it bigger....

CLICK ON THE PICTURE & then "FULL SIZE" to make it bigger.


http://inlinethumb15.webshots.com/45262/2894328150091848696S600x600Q85.jpg
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My understanding was that the boxed engines were the new style no bolt engines. They were unraced & were packed with dyno sheets.

CLICK on a picture & go to "FULL SIZE" to make it larger.

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I would like to call upon anybody, particularly OMC employees who has pictures, super8, video's, race programs, and anybody who would feel they would like to add their 2 cents, PLEASE do so. I/We...

Lars,

If you need extra support I am happy to help. I am still scanning all the photo's & other things that John Sheldon has sent me & I will email those pictures to you & support you however you...

Here is a Dyno sheet from John Sheldon aka "ROTARYJOHN" here on BRF. He has provided almost all the info here so far.

CLICK & go to "FULL SIZE" make it bigger.
...

DYNAMOMETER Testing

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1. Jimbo at Parker, first lap waving to the crowd. The wake behind him was Posey. 15:17 gearcase
...

Quote from above: Now I'm wondering. Were the OMC rotary's aluminum housing's sandwiched between cast iron as well? And were there any problems due to the temperature differential between the intake...

All kudo's to JOHN SHELDON (aka RotaryJohn her on BRF), he wrote the story above. Thankyou so much John.
One name springs to mind Charlie Strang, there are many others but Charlie was the CEO....

There is much more to come.
John Sheldon (Rotary John on BRP) is sending me his entire memrobilia collection which I will scan & post. Hopefully this thread will become the definitive epitaph to...

CLICK ON ANY PICTURE to take you to more pictures.
http://inlinethumb15.webshots.com/37902/2415984520091848696S600x600Q85.jpg
Mike Griffiths (Left) & John Sheldon (Right) Worked 12 hr shifts 7 days...

Epilog

By 1975, EPA was making noises about regulating emissions on outboards. They were in fact doing lake testing in Michigan and Florida trying to prove outboard emissions harmed water quality...

St. Louis ‘75

This was Mercury’s premiere race, as this was Billy Seebold country and was billed as the “World Championship”. The race consisted of four-20 minute heats with a LeMans type start...

Paris ‘74

The first race in ’74 for the rotaries was the 6 hrs of Paris. The Mercury ban was still in place for the rotaries, but on threat of pulling all OMC engines from the race, the race...

South Africa

The Johnson distributor in South Africa requested we bring the rotaries to his race. It meant leaving the week before Christmas and returning after the 1st of the year. This was the...

Windermere, England

OMC brought 4 rotaries to this race and Mercury brought their V-6’s. This was the first head to head for these engines. Johnny Sanders engine broke during practice, broken...

Carol Springs Ill.

We ran 4 engines in Carol Springs, more or less as an exhibition, as it wasn’t a major race on the circuit and Mercury didn’t care if we ran or not. The engines finished...

PROVO UTAH RACE

This was to be THE race. We found out Mercury was bringing everything they had including dual engine rigs. They flew in their European drivers and the latest Mollinari boats. Our...

THE GALVESTON RACE

Even though Parker didn’t result the way we wanted, it scared the hell out of Mercury. Word went out from the Mercury factory that any driver who ran the Galveston race with a...

THE PARKER RACE

We had two boats at Parker. The Evinrude was driven by Jimbo McConnell and the Johnson by Tommy Posey. They were the talk of the prerace scene. The gear case used for the initial...

INITIAL POWER DEVELOPMENT

We knew from previous work that the exhaust restriction was hindering power and the engine was somewhat subjective to exhaust tuning. This is where I entered the program....

INITIAL DESIGN WORK

Reluctantly George assigned Mike Griffith to the program. The first issue addressed was the crankshaft. A stationary gear is required for each rotor and its pitch diameter is...

BIRTH OF THE 4 ROTOR RACE ENGINE

Charlie Strang was the head of OMC at the time. At the world championships in Lake Havasu in 1972, Johnny Sanders won the race for Johnson, but only because...

As told by John Sheldon
Former OMC rotary engineer



PREFACE
After the successful introduction of the 35 HP and 45 HP air cool/charged cooled snowmobile engine, OMC started working on water...