Norton V4SV: New Norton’s new superbike unveiled

Madnorton said:
Already at 30K for a bike you can't use on the road or track, some one has some spare cash it seems.
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Or a very large back garden!
But that recent £29K+ JPN won't be ridden either, so I don't suppose this is out of the ordinary..
(Though if I was in this league I'd wait and put the money towards one that CAN be ridden}
 
Plenty of very well off motorcycle collectors out there that would like a peice of history, good or bad....regardless of being able to ride it or not.
 
EstuaryBoy said:
Anybody know why the 'SV' suffix? As someone who grew up with OHV, OHC, DOHC etc.. SV was always: 'Side Valve'
Perhaps that's why it's dropped 15 hp??
Maybe there's a 'Big 4' coming :)
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Perhaps from the RSV4 it was copied from.
 
It’s a common accusation though.

The race did use a 1000cc Aprillia engine. The road bike engine was a Ricardo design as I understand it.
 
Yes. You'll also notice that the race bike didnt use a single sided swingarm either. This was because the V angle difference between the norton v4 and the aprilia v4. Running the aprilia motor resulted in the exhaust headers coming out at a different angle, which fouled on the single sided swinger.
 
Ricardo worked for Aprilia and Norton at the same time, both came out with V4's and a 650 version using the 2 front cylinders. Aprilia's owners Piaggio have a joint venture with Zongshen who Norton licenced the 650 engine to with reduced power.
 
kommando said:
Ricardo worked for Aprilia and Norton at the same time, both came out with V4's and a 650 version using the 2 front cylinders. Aprilia's owners Piaggio have a joint venture with Zongshen who Norton licenced the 650 engine to with reduced power.
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Maybe there is some crossover there behind the scenes, who knows!?

But the main point here is that the Norton 1200 V4 is not a RSV4 lump.
 
From what I remember, the gearbox set was interchangeable and clutch pack was interchangeable....but dont quote me as Im not 100% on that.
 
They shared the same engine mounting positions, and making the gearset interchangeable would save them shit loads in manufacturing and R&D. The rest of the engine, very different. Different cam drive, cc, v angle etc
 
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Well, I for one hope it pans out and makes it into production. the company definitely needs some black in their ledgers if they're to continue.
 
Stu Bodycote said:
They shared the same engine mounting positions, and making the gearset interchangeable would save them shit loads in manufacturing and R&D. The rest if the engine, very different. Different cam drive, cc, v angle etc
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I think there was a thread on this forum some time ago that detailed the differences between the 1200V4 and the RSV4.
the cases are different, 72 degree V4, the crank, heads, cam drive system and tranny. Simon said there was not much similarity other than the general "V" cylinder configuration. Many of us assumed that due to Norton's affinity for using the RSV4 65 degree V4 lump in their IoM racer, that the two motors were very similar. They are not.
However, we don't know what engineering changes TVS have made to the 1200 to address the known defects that they found in the V4. The new lump may have significant differences from SG's 1200.
 
Is that McPint at the launch? If its good enough for him after what he went through with the previous owners then its quite an endorsement .
 

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