"I call her "Margaret".
Posted on 08/08/2018 9:57:01 AM PDT by C19fan
A former Formula One driver has designed an ultra-sleek new motorbike, known as the TMC Dumont, powered by a vintage 300-horsepower Rolls-Royce Continental V6 aircraft engine.
The futuristic ride has 36-inch hubless wheels – 'the largest wheels ever made for a motorcycle' according to the Brazilian creator Tarso Marques.
The wheels are fixed to the base of the rim giving the motorcycle the appearance that it is 'floating' on the road.
Creator Tarso Marques said he has been dreaming about the design for 15 years, which he describes as the 'most expressive event of customisation in the world'.
The motorcycle was built for the 77th Daytona Beach Bike Week rally event in Florida, where it was awarded the title of ‘Best in Show’ earlier this year.
(Excerpt) Read more at dailymail.co.uk ...
Those look more like Tiara cylinders - 550A induction is on the bottom..so it could be a 540cu in motor (stock bores), or over-bored slightly. Those motors are obsolete as far as I know.
I think the Rolls Royce claim is just marketing...
It has got invisible 'rubber baby buggy bumper' shocks for that.
Smooth rides are so passé!
"I call her "Margaret".
So gay!
What's the point of "modernizing" it if you don't reduce weight or increase power (or both). Sounds like they spent a lot of money on engineering, testing, and qualifying it without ending up with a better product. In an ideal world, some folks would lose their jobs over a costly fiasco like that.
Well, I had to chop my Harley front and rear so I could reach the ground...but that’s just dumb! :-)
Rolls Royce built some under license. Maybe it was a license built one rather than one built here.
Probably just added electronics..............
Nah, it's air-cooled. You can see the cylinder fins if you look closely at the Mail pictures.
Continental did (does?) make a liquid cooled version but this isn't it.
Rocky Mountain Oysters in the making!!
Horizontally opposed...like a Gold Wing engine.
Thanks, I didn't realize that.
Brits have no concept of American engines. They would probably say that Abita beer is brewed in Mollington, England. :-)
Finned, and air cooled.
Head scratching myself, it could be an IO 540. I have seen an 80 inch shovelhead in a home build aircraft. Too cool.
You are right about the induction. It does look more like a 540, and looking at the valve covers, I’m thinking Lycoming.
As good as the IO-540 is... for airplanes... it is surprising to me that someone would consider it to be a good choice for even a “concept motorcycle”. Airplane engines designed for small airplanes are designed to operate in a narrow range of RPMs. Nearly all IO-540 powered airplanes that I am familiar are equipped with variable pitch propellers. I do not think that any of the IO-540s are designed to run at more than 2700 RPM. Motorcycle engines typically are able to be revved up to much higher RPM to get maximum power from their displacement.
It is a little confusing because the engine has some unusual mods, but it looks like a Continental. Have you ever seeing a Lycoming 540 without pushrod tubes mounted on top of the cylinders?
My old eyes just couldn’t see the fins. (Still can’t, LOL) I’ll take youal’s word for it.
That 550 will make about 300 HP at 2750 RPM, won’t it? (I’m a Lycoming guy and am just guessing.) Should have enough low end torque to pull that bike effortlessly.
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