61,9 HP Vespa smalframe with rotax cylinder

Post your Vespa dyno graphs here! But graphs & spec info only, keep the chat in the 'dyno chat' section ;o)
Kingwelle
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Thu May 08, 2014 9:00 pm

New Setting, 61,9 HP !!!

The setting from january was untouched and we got only :-) 59,2 Hp yesterday on the same dyno out of the engine. We know that there is clima correction software, but we also know that in the wintertime everybody is getting the highest results !

So the 59,2 HP was yesterday the maximum- timing of the ignition, carburator everything was testet.

Than we changed to our new carburator. 44mm XY Type (it will be a secret actually, if the carburator works perfect, we will inform the type an price)

Here you see the result, the carburator ist actually not correct adjusted, we need more time !

https://www.facebook...gwellen?fref=nf

https://www.facebook...&type=2

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drunkmunkey6969
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Thu May 08, 2014 9:03 pm

The links are not working??

Great BHP result though!


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drunkmunkey6969
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Thu May 08, 2014 10:27 pm

Good video.

Does the frothing (bubbles) of the fuel at certain RPM cause a lean spot at that point?

Kingwelle
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Joined: Tue Jan 07, 2014 7:36 am
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Fri May 09, 2014 8:58 am

That could be, but we had also a defekt in the exhaust valve system. We will check first the exhaust valve system. Later we change maybe the float bowl to a bigger one with also more weight (hopefully less vibrations)

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