Re: Bergnockenwelle/Drehmomentnocken


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Abgeschickt von Clemens am 10 Februar, 2004 um 13:43:13

Antwort auf: Re: Bergnockenwelle/Drehmomentnocken von oez am 09 Februar, 2004 um 20:49:48:

: : Tractor pulling was exactly my plan :-) Almost... My goal is to improve low end torque. I'am not interrested in anything above 5000rpm. I would love to have an engine had max drehmoment bei 2500-350rpm. Thats my aim anyway...

: : Niels

: : Thanks for the reply by the way..

: hi niels,

: dann isses ja gut.. aaaber.. mit dieser nockenwelle wirst du eine "spitze" drehmomentkurve kriegen. d.h du wirst zwar im unteren drehzahlbereich ein gutes drehmoment haben aber nur über ein geringes drehzahlband verfügen können.. schaltstress wie bei einem supersportler, nur auf einem geringeren drehzahlniveau.

: für deinen motor würde ich dir eine 320er empfehlen..

: mfg

: oez


Hi Niels,

I guess oez will be right with his assumption.
The thicker cylinders will not only move your
torque-diagram in the upward direction but will
also shrink the curve in the rev-axis. You've a
bottleneck called 'inlet-valve'. My only real-life
experience in this relationship are the
900cc-cylinders that a buddy of mine once mountet
on his R60/6. The rest of the engine (heads,carbs)
remained unchanged (excepting a family-pack of
gaskets underneath the cylinders in order to get
the compression down). This engine pulled like a
brewery-horse in the low-rev-range but was boring
tired above the mid-range. It really made no fun!
It was a kind of Mercedes/8 200D-feeling.
I have no technical data actually, but I guess the
600cc-engine will have had smaller inlet-valves
than the 750cc.
Would be interesting to hear Rudi again!

Regards,

Clemens


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