Physical differences between motors (3 cyl) - MVAgusta.net
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post #1 of 11 (permalink) Old 02-02-2017, 05:08 PM Thread Starter
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Physical differences between motors (3 cyl)

Hey guys

I've been looking at the different bikes with the 3cyl and I'm curious to know what are the actual physically differences between them (other than the obvious chassis).

I.e. why does the F3 800 make more (advertised) power than the Dragster RR? Is it an ecu thing? Is there physical motor differences (more aggressive cam maybe?). I'm aware of the Euro 4 differences so not really talking about that.

Apologies if this is already discussed elsewhere!

2016 Dragster RR
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post #2 of 11 (permalink) Old 02-02-2017, 05:11 PM
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I suspect it will be down to cams and ECU tuning to make power at different parts of the rev range depending on application.
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post #3 of 11 (permalink) Old 02-03-2017, 01:39 AM
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The dragster has steel valves instead of Ti, different springs and cams as well. RR makes its extra power over the STD B3 800 engine by using 6 injectors instead of the STD 3.
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post #4 of 11 (permalink) Old 02-03-2017, 01:52 AM
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And F rev a little higher although not much but about another 300rpm.

Dragster 125 dragster rr 140 although optimistic and 6 injectors as mentioned

F3 800 148bhp
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post #5 of 11 (permalink) Old 02-03-2017, 06:05 AM
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I've always wondered aswell. My Dragster RR has F3 on its case. Shouldn't it be B3?


Kag

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post #6 of 11 (permalink) Old 02-03-2017, 10:15 AM
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Quote:
Originally Posted by Kageira View Post
My Dragster RR has F3 on its case
So does my Turismo

Chas
Previously a MY16 Turismo Veloce Lusso
Defected to a Ducati Multistrada 1260S Touring
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post #7 of 11 (permalink) Old 02-04-2017, 05:35 PM Thread Starter
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Ahh there we go. Valve train is different. More revs is more power. Less reciprocating mass.

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post #8 of 11 (permalink) Old 02-05-2017, 12:46 PM
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Compression ratio is different, due to different pistons.
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post #9 of 11 (permalink) Old 02-06-2017, 12:43 AM
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Compression ratio, ECU map are likely not the only reasons.

Crankshaft, Piston and associated connection are likely to be lighter on F3 and F4. With a lighter mobile equipment, the engine can reach higher RPM, but is generally having less torque at lower RPM than the engine with heavier mobile equipment.

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post #10 of 11 (permalink) Old 02-06-2017, 04:44 PM Thread Starter
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So the question begs... whos put an F3 motor in a dragster? =D

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