Facts about Evinrude/Johnson racing outboards made my OMC

[Instigator]

Air dumps?

BTW, I hope I’m not the smart ass you referenced above.

More Cesare Scotti in Skokloster, Sweden in the early seventies.
Look closely to the front of his boat..!!

Attachment 479674

[lars strom]

This is a wonderful picture of Cesare Scotti at his own place on Lake Como.
(The Scotti-Craft factory)
R.I.P my racing hero.
Thanks Terry Weddell for this unique picture.

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First..NO..its not you @Instigator ....I know very well who you are..!!

After looking at the top picture with Scotti standing next to his boat..pretty sure its from 1974..the cover over the engine is way to high/tall to be an Evinrude V4..must be a V6 Super Strangler like on this picture from Bristol 1974.

[WaterZebra]

Now its getting interesting..!!

Cesare Scotti's place in Faggeto Lario, Como, Italia still exists under the name La Nautica di Scotti.

http://www.nauticascotti.it/?fbclid=...nMl5BkhCpIE4to

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Must have been really interesting to see each camp did for testing on the lake, especially when Molinari was partnered with Mercury. I get the impression that Molinari's facility was more "industrial" than Scotti's. Scotti's looks more like a conventional lakeshore marina?

[lars strom]

YES. @WaterZebra .


I am pretty sure this is the boat Cesare built for Paris 6 Hours 1974 (before paint)..!!..

[Instigator]

Looks to me like the front deck has air dumps, maybe 2’ back from the leading edge.

Thats what I was looking at.
I would have thought early ‘70’s was too early for that though.

More Cesare Scotti in Skokloster, Sweden in the early seventies.
Look closely to the front of his boat..!!

Attachment 479674

[lars strom]

Looks to me like the front deck has air dumps, maybe 2’ back from the leading edge.

Yes..this was before the pickle fork design..Scotti was doing a lot of "wing experiment".
1974 all the boats Cesare Scotti raced was the pickle fork design powered by the Evinrude V6 Super Strangler.
This is from early 1974 at Idroscalo, Italy.
The first picture is the start..the second picture is very interesting..look close at Cesare's rear of the boat..you can see small wings there.

Much more interesting is..this morning I got a few emails from Cesare Scotti's family..Stefania & Massimo Scotti sent me more pictures and info. Coming soon..

[WaterZebra]

Yes..this was before the pickle fork design..Scotti was doing a lot of "wing experiment".
1974 all the boats Cesare Scotti raced was the pickle fork design powered by the Evinrude V6 Super Strangler.
This is from early 1974 at Idroscalo, Italy.
The first picture is the start..the second picture is very interesting..look close at Cesare's rear of the boat..you can see small wings there.

Much more interesting is..this morning I got a few emails from Cesare Scotti's family..Stefania & Massimo Scotti sent me more pictures and info. Coming soon..

Wow - aside from the OMC V8 circuits I've never seen photos of a race where OMC colors were the majority of the field. Only 2 Mercs?

As far as wings go (fixed and movable) I believe that Hodges and Molinari were the only ones who experimented with them. Merc stayed away from wings. With power trim and a running surface that constantly changed and the addition wind into the mix, that's a lot going on there at once for the driver's mind to manage. Only way to get wings to really work would be computer software to constantly manage the variables. Computers per se' really wouldn't happen for another 20 years yet, let alone sensors on a boat which could read the variables. Shoot, joystick steering in today's boating market is just now getting started.

[Instigator]

I worked for Tim Butts of Butts Aerowing fame in about ‘89.

His “Aerowing” hydros held virtually every record in Pro/Alky Hydro racing in the 70’s-80’s.

It was before my time but he experimented w/canard winds in a similar location to the Scotti’s.

He said he could adjust them to fly the back of the boat and run a lap w/only the gear case in the water!

Couple of interesting tid bits

1. It takes power to create lift and the boat was actually slower w/the rear wings.

2. The APBA banned them. (May have been UIM)
The rules said “no aerodynamic lifting devices permitted”.

He laughed when telling me this as, a hydroplane only functions due to aerodynamic lift.
So they would have to ban them in entirety.

[Rotary John]

More Cesare Scotti in Skokloster, Sweden in the early seventies.
Look closely to the front of his boat..!!

Attachment 479674

Lars: I'm thinking, this is the boat that was repainted for the Evinrude rotary for Jimbo.

[lars strom]

Wow - aside from the OMC V8 circuits I've never seen photos of a race where OMC colors were the majority of the field. Only 2 Mercs?

Well..this is one of many reasons why I started this thread..so much miss-information out there..

Here is a fact:

In Paris 6 Hours 1974..probably to most prestige full race in the world back then..

The entry list for the outboard classes..

16 ON boats powered by Evinrude - Johnson VS 7 Mercury
2 Exp. boats powered by Evinrude- Johnson Rotary no Mercury

In the popular OE class:

21 OE boats powered by Evinrude - Johnson VS 6 Mercury

There was 12 OE boats powered by Carniti..(twice as many then Mercury)

[lars strom]

Lars: I'm thinking, this is the boat that was repainted for the Evinrude rotary for Jimbo.

Well..I dont know Rotary John,but its possible.
Here is another similar Scotti-Craft in Europe (I think) in early 1973.

[lars strom]

Yes..this was before the pickle fork design..Scotti was doing a lot of "wing experiment".
1974 all the boats Cesare Scotti raced was the pickle fork design powered by the Evinrude V6 Super Strangler.
This is from early 1974 at Idroscalo, Italy.
The first picture is the start..the second picture is very interesting..look close at Cesare's rear of the boat..you can see small wings there.

Much more interesting is..this morning I got a few emails from Cesare Scotti's family..Stefania & Massimo Scotti sent me more pictures and info. Coming soon..

I have received many emails from Italy today..Lots of info and pictures coming soon..Need to figure everything out first..!!

[Lake X Kid]

As far as wings go (fixed and movable) I believe that Hodges and Molinari were the only ones who experimented with them. Merc stayed away from wings. With power trim and a running surface that constantly changed and the addition wind into the mix, that's a lot going on there at once for the driver's mind to manage.

And also sometimes some of the boats would have a water ballast tank in the bow.
Another function to work whilst driving, loading and unloading water during each lap (for faster laps).

[John Schubert]

And also sometimes some of the boats would have a water ballast tank in the bow.
Another function to work whilst driving, loading and unloading water during each lap (for faster laps).

AND, it never was fast enough!

[lars strom]

From Scotti's family today.
Thanks