American builds huge 3.5 litre engine

Bad Dog Cycles pistons are large enough to eat your sunday dinner off

Posted: 14 May 2009
by Robin Goodwin

Visordown Motorcycle News
Bob's R1 big-bore was never going to pass scrutineering

CHECK out the size of the pistons for Bad Dog Cycles prototype 3500cc V-Twin monster.

The Bad Dog 215 is a fuel-injected, sixty-degree air-and-oil-cooled 4-valve V-Twin, displacing 3500cc. With the engine expected to develop around 300ftlb of torque at 5000rpm and 300hp at 6000rpm.

The engine has an anticipated price of $40,000 (£26,000) and then you've got to build a bike around that. We'd rather spend our money on a Desmosedici.

For more information visit Bad Dog Cycles.


Previous article
Suzuki V-Strom Concept for Donington		 Next article
Launch report: Triumph Thunderbird


huge 3500cc piston
TwitterStumbleUponFacebookDiggRedditGoogle


Discuss this story


Donteatpeople

6000rpm with a piston that heavy? If it doesn't fall apart that’s pretty impressive.


Posted: 14/05/2009 at 13:16


eojmo
With the heavey flywheels required to balance the big pistons the engine should have enough torque to plow a field and haul a trailer camper.

Posted: 16/05/2009 at 23:32


rgtay
 - if it doesn't shake itself to bits first! 

Posted: 19/05/2009 at 18:33


sexdrugs'n'rockingmole

I don't really know too much about engine design, and normally like the size excess of US cruisers, but... is there any real point to making a twin of this size?

Surely by the time the suck cycle has cleared the mix from one cylindar, you'd be back home? Chevy engined customs of 3-7 litres are normally V8s. Surely, keeping it a twin at this size will mean that cubes themselves won't be the limiting factor?

What's next? A 4 litre single? Stick it in a front-wheel drive crosser with realy knobbly tyres and watch it plough its own track through the jumps and tabletops


Posted: 20/05/2009 at 13:19

Talkback: American builds huge 3.5 litre engine