Indian Motorcycles has been teasing the introduction of their new engine for months and they’ve finally revealed their all new Thunder Stroke 111 V-Twin. Although it’s a brand new engine, they drew heavily from classic Indian engine designs. The 49 degree, 111 cubic inch V-Twin has 3 cams, parallel pushrods and down firing exhausts. The intake is on the left. It’s unit construction providing direct drive between the crankshaft and clutch. The 6 speed overdrive transmission handles the 115+ foot pounds of torque.
If you look at the Thunder Stroke and compare it to an original, it’s obvious how much they wanted to bring the design forward, right down to the cooling fins, which leads me to believe the motorcycle it’s destined for will follow the same idea.
Polaris looks like they’re doing it right so far, this is a good looking engine. It will be interesting to see what the whole package looks like.
Link: Indian Motorcycles
Internal animation video below: