Looks like a nice concept and execution. I like their implementation of the
reduction drive's centrifugal clutch which engages at around 1800 rpm - lik
ely avoiding the low rpm resonance peak which destroys so many of the expone
ntial reduction drives. Their manual is also quite detailed about the operat
ing constraints for the turbo etc.
It was my understanding from my EAA colleges that when the prop/engine combi
nation goes into resonance (typically at low rpms) the power dissipated in t
he gearbox or any type of dissipating coupling (like the rubber one in the V
iking) goes up exponentially. Wrt the Viking, i found Jan's dismissal of thi
s typical characteristic a bit disconcerting.
Last year at osh, there was a high horsepower reduction unit on display whic
h also had a clutch. an elegant solution IMHO: simply avoid the resonance i
nstead of attempting to deal with it.
I wonder what the Europa installed weight was for smart installation?
Cheers,
Pete
a239
On Jan 29, 2012, at 6:58 PM, "uvtreith" <uvtreith@t-online.de> wrote:
> Hi Europa Family,
>
> I have installed the smart engine in my Monowheel XS.
> This engine is made by Mercedes-Brabus with Turbo.
> The engine is electronically controlled by the so called smart-MIP System.
> More Info you will find - also in English - under: www.ecofly.de and www.s
chicke-electronic.de
> I paid complete with engine frame, all accessories (but used a water coole
r from a Kawasaki 1200 and they changed the operating panel according to my d
rawing) and the smart-MIP system around 11.000 EUR.
> When the engine is finished after about 2.000 operating hours, you just ge
t a new smart/Mercedes engine for about 4.500 EUR (Ecofly will do the change
for you-if you like).
>
> Today we made some ground tests by -4=C2=B0C and a static thrust test by W
arp Drive setting on 14=C2=B0 (best cruise). The max. engine rpm was 4.500, b
ut the engine can do as maximum 5.800 rpm.
> The static thrust test was measured by a digital spring scale and was show
ing 145 kp, so now we will change the blade setting to 12=C2=B0. Our aim is t
o get 180-200 kp.
>
> More info later, if you like.
> Best Regards,
>
> Bruno Reith
>
>
>
> -----Urspr=C3=BCngliche Nachricht-----
> Von: owner-europa-list-server@matronics.com [mailto:owner-europa-list-serv
er@matronics.com] Im Auftrag von Kevin Kedward
> Gesendet: Freitag, 27. Januar 2012 21:11
> An: Europa-List@matronics.com
> Betreff: Europa-List: Smart
>
>
> Hi Guys, What happened to the Smart car engine installation ?
> Regards
> Kevin
>
> Sent from my iPhone
>
>
>
> <D-EUVT ground tests.JPG>
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