OMC's 4-Rotor Wankel Racing Engine - The Real Story

[Rotary John]

how heavy is a 300hp rotary with water jacketed exhaust?
I think a rotary needs to be turboed to get an advantage over a 2 stroke

135 lbs.

[powerabout]

so about the weight of a V4?
Was the OMC rotary all aluminium?
Cheers

[Rotary John]

so about the weight of a V4?
Was the OMC rotary all aluminium?
Cheers

Housings were alum. rotors were iron and crank was steel. With todays developments, 450 HP from the same engine is very possible; at 8000 RPM. Unfortunately the cost to build and develop one is prohibitive and as soon as it kicked someone ass it would be banned again.

[jackiewilson]

Housings were alum. rotors were iron and crank was steel. With todays developments, 450 HP from the same engine is very possible; at 8000 RPM. Unfortunately the cost to build and develop one is prohibitive and as soon as it kicked someone ass it would be banned again.

Hey Johno, nice to see your in good form again.
You of all people know ,it has always been prohibitive to build and develop the ROTORY.
we ain't never going to agree on what you won and what you lost and the reasons why.

Interesting though that you can still only get 450hp@ 8,000. That old Cosworth motor of mine was pulling 1,000 hp @ 18,000 when they finally pulled it (2010 I think)
they are using it as a fuel pump to feed the jet in the latest land speed record attempt.
Just how did you ever measure the cubic capacity of a rotor, jog my memory, I forget things easily these days. All the very best , j.

[powerabout]

Hey Johno, nice to see your in good form again.
You of all people know ,it has always been prohibitive to build and develop the ROTORY.
we ain't never going to agree on what you won and what you lost and the reasons why.

Interesting though that you can still only get 450hp@ 8,000. That old Cosworth motor of mine was pulling 1,000 hp @ 18,000 when they finally pulled it (2010 I think)
they are using it as a fuel pump to feed the jet in the latest land speed record attempt.
Just how did you ever measure the cubic capacity of a rotor, jog my memory, I forget things easily these days. All the very best , j.

it wouldnt be 1000hp even at 28,000 rpm

[afr]

wow how did i miss this now it will take me a week to read all that lol

[wanagofass]

A 3.4 cosworth turning 18,000 rpm?

[T2x]

No... a real Cosworth Formula one race car motor turning 18,000 RPM...

Jackie ran it in this "outboard" Tunnel hull back in the 70's, and is restoring it today.

Cosworth is a major race engine builder who dicked around a bit with Mercury's 3.4 in a joint effort to improve that concept.... hence the "Cosworth" tag on some of them.

[Rotary John]

2 liters Jackie; 2 liters

[powerabout]

Dfv's only did 13500 I thought?
And in 1970 they didn't make more horsepower than the last of the 3.5s ( HBW Cozzy)

I think Jackies laughing as his wind up has worked
Ps it was only a I drive ssm after all

[powerabout]

I hear its being restored as well
That boat needs to be in a hall of fame

[jackiewilson]

Dfv's only did 13500 I thought?
And in 1970 they didn't make more horsepower than the last of the 3.5s ( HBW Cozzy)

I think Jackies laughing as his wind up has worked
Ps it was only a I drive ssm after all

the Cosworth I had was a mere 400 hp from a 3 liter DFV -----had 10,000 ceiling but never used more than 8,000.
By 2010 most of the formula one motors ----Renault, Ferrari, Cosworth were pretty close to 1,000 hp and all were pulling close to 20,000 rpm.
Will be interesting to see what this new breed of silent motors brings this year, half the fun of racing is the noise and the " ground trembling".

[powerabout]

Yep
They are v6 and turbo with a very tight max fuel flow restrictor ( new for this year)
But we all know the only use for a v6 is 2 stroke outboard
Did 10 laps of the barcelona gp track in a mid 90's f1 a few years back
Had a hbw cozzy in it
Car was dangerouly easy to drive as an amateur
Would pull away at walking pace in 5th gear
Was the best £2000 I ever spent in one day

[knot<safe77]

2 liters Jackie; 2 liters

[jackiewilson]

2 liters Jackie; 2 liters

John, you know my views on capacity-----two litres is big enough for any application anywhere, all it needs are engineers to work round it, twostroke, diesel , wankel I don 't care. not s/c or turbo, that's runaway power and screws any system, nor trick sh-t fuels. All I ever wanted was a workable formula, but in the end I couldn't get anyone to see sense, so amidst all the politics the only losers were us and the demise of powerboat racing. J.