Biking related photos and videos (keep it safe for work)
duke63
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by duke63 » 28 Oct 2015, 10:23
That's a nice big pair.
Monty
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by Monty » 28 Oct 2015, 12:22
That just looks wrong to me. Too much power, not enough metal.
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Blade
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by Blade » 28 Oct 2015, 16:17
So is that a 650 if it's half a 1299 engine
Cav
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by Cav » 28 Oct 2015, 17:48
I think they're using far too much material there - must be a really heavy engine !!
Blade
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by Blade » 28 Oct 2015, 19:39
Looks quite a long stroke in that view
Kwacky
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by Kwacky » 28 Oct 2015, 20:08
My wife must be into Ducatis. She likes a big piston with a long stroke.
duke63
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by duke63 » 28 Oct 2015, 20:36
BTW that isn't an engine cut in half, its a customers engine on a workbench at JHP.
duke63
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by duke63 » 28 Oct 2015, 20:38
Can someone confirm or just tell me I'm talking crap here but if you increase the bore you will need a bigger piston but if you increase stroke that isn't necessarily the case but would be likely.
Blade
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by Blade » 28 Oct 2015, 20:44
Changing the Stroke would mean possibly changing the crank and con rod. Depends on the specifics but piston would be ok if no bore change and only stroke length altered.
duke63
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by duke63 » 28 Oct 2015, 20:49
The new 959 uses the same rods as the 1299 apparently.
Monty
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by Monty » 28 Oct 2015, 20:55
Changing either will give you more or less cc, but each way will give you a different engine character. Long strokes tend to be more torquey but won't rev as high due to piston speed. Short strokes will give you more rpm and therefore more BHP for a given cc.
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Rossgo
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by Rossgo » 30 Oct 2015, 10:01
What were they doing to the engine at JHP do you know?
Blade
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by Blade » 30 Oct 2015, 10:03
I assume tuning work ???
duke63
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by duke63 » 30 Oct 2015, 10:30
I guess so. They are renowned for blueprinting too.
duke63
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by duke63 » 30 Oct 2015, 10:31
BTW the new 959 is apparently going back to side exhausts as they cannot get the current system to meet Euro 4 noise regs.
Blade
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by Blade » 30 Oct 2015, 10:35
If it looks anything like this then happy days