Just to clarify , that Norton is running an Aprilia V4 .
Dusty
Don't know about the racer but read his for the street bike.
https://www.motorcyclenews.com/news/new-bikes/2016/november/world-exclusive-norton-v4-rr-ss-in-detail/“You have to start with the end game, then work your way back to achieve it. I had to get Ricardo to stick a square peg in a round hole so that we could build a really compact superbike. And moving to our own engine changed the game massively.
“The Aprilia V4 engine is a 65-degree, ours is 72. Their engine is a 1000cc, ours is a 1200cc. The layout of our engine is very different to theirs, and we’ve used a lot of engineering tricks to make ours more compact. Even though it’s 20% bigger in capacity, with a bigger V-angle, it’s the same size as Aprilia’s in profile.
“Ideally what we needed was a 90-degree V, so you can ditch the balancer shaft, but then you end up with really weird chassis geometry. So the 72-degree is a compromise between chassis geometry, weight distribution and engine performance. A slightly wider V, like ours, also gives a better looking engine, and that’s important further down the line so we can make a naked version. I wanted the engine to be beautiful in its own right.
“The electronics are still in development, but electronics won’t make a bad bike good, they can only make a good one better. So you need a good fundamental bike beneath you, and that’s what we’ve developed at the Isle of Man.
“But this isn’t the TT bike with lights bolted on – this was a clean-sheet design. So while this bike came from everything we learnt with the SG5, this is a completely different bike, and will become the basis of next year’s TT bike.
“Engine-wise the output had to begin with a 2. Whether it’s 205, 206, 210bhp – it doesn’t make much difference, but it has to start with a 2. The race system on this bike will give it another 10bhp. The standard road system will have a twin underseat exhaust, and is Euro4 compliant.
