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Rotovic engine made from Ariels

 
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frankdamp



Joined: 07 Oct 2005
Posts: 143
Location: Anacortes, WA, USA

PostPosted: Wed Nov 22, 2006 12:04 pm    Post subject: Rotovic engine made from Ariels Reply with quote

In the September issue of Motor Sport (UK Magazine) there was mention of a 1964 1.5L V-12 air-cooled engine used in a Lotus 23 race car. According to the report it was made from "six Ariel V-twin motorcycle engines nailed together".

I was in the industry at the time, and I sure don't remember an Ariel 250cc V-twin. Does anyone else? The only Ariel 250 I remember was the Leader/Arrow 2-stroke parallel twin. At that time, Ariel was on its last legs as a company, having failed to capitalize on the Arrow/Leader concept and not having anything else competitive.

The last hurrah was an in-line 600 cc 4-cylinder engine that was to be laid on its side in an extended-wheelbase Leader-style frame. Unfortunately, the first test engine could only produce 25 horsepower and the project had burned up all the development capital. It may have been the cause of Ariel's demise.
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PostPosted: Wed Nov 22, 2006 3:07 pm    Post subject: Re: Rotovic engine made from Ariels Reply with quote

frankdamp wrote:
In the September issue of Motor Sport (UK Magazine) there was mention of a 1964 1.5L V-12 air-cooled engine used in a Lotus 23 race car. According to the report it was made from "six Ariel V-twin motorcycle engines nailed together".


A quote from the webpage below:
"The second car is the 1963 Rotorvic 23B. This car got its strange nickname because it was originally outfitted with 6 Ariel Arrows motocycle engines in tandem to form a V-12."

http://www.utahlotusmuseum.com/id104.htm

So, not six V-twins but six parallel twins!
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frankdamp



Joined: 07 Oct 2005
Posts: 143
Location: Anacortes, WA, USA

PostPosted: Thu Nov 23, 2006 10:28 am    Post subject: Reply with quote

Boy - a 2-stroke V-12. Must've sounded pretty impressive.

According to Motor Sport, someone has bought the Lotus 23 car that originally had that engine and has persuaded the museum at Donington Park racetrack to let him have the engine to put back in its original chassis.

The purchase of the car was "in the US", so it's probably the one form the Utah museum.
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The Unapproachable Norton Commando

At the end of 1967 the Norton Commando was announced.

The Norton Commando was greeted with a certain amount of scepticism because on first sight the commando appeared to comprise of the old Norton Dominator twin cylinder engine mounted at an inclined angle in a set of new cylinder parts.

It was not realized that the new Norton Commando Isolastic method of engine suspension damped out all engine vibration and produced a machine which had uncanny smoothness for a vertical twin. In due course the critics were silenced and the Norton Commando had the distinction of being regarded as the first of todays so called superbikes. There can be little doubt that the original design concept of the Norton Commando has proved correct, since comparatively few modifications of any real consequence have been made since production commenced during 1968.

Now nearly 40 years later Norton Commando riders like us are a breed of our own, and as far as we are concerned its still more fun to go for a blat on the old Norton Commando, and fast. As a Norton Commando owner and enthusiast, my goal here is to promote and give credit to those who keep the Norton name going.

It is more deserving to give credit to the Commando itself, for after all these years it continues to be respected. The original Commando designers like John Favill are those who deserve the credit for developing this incredible motorcycle.

The Norton Commando Roadster and Interstate of the late seventies, never died. Although the Norton Villiers factory dispersed the tradition lived on. Today Kenny Dreer in the USA is developing the new 952 CC Norton. What a great looking bike this is, and its engineering is still based on the original layout. It will be interesting to see how the new 952CC Norton does in todays tough motorcycle market. One thing is for sure, I would own one if I could afford it.