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ZDZ 90 or MVVS/Evoluton 80 ? - 12/22/2011 1:10 AM   
SJN



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From: Copenhagen, DENMARK
Status: online 		Hi Gyus

I need a gas engine for a 110" 1/4 scale spitfire, and would like to hear what you guys would buy.
I want a sigle cylinder engine, so I guess these are about the only choices I have?

I like the ZDZ because it has 10cc more than the MVVS.
I also like the rotary intake valve principle.
But it does not seem to have as many cooling fins as the MVVS/EVO motor.....( dont know if it makes any difference...just guessing )


I like the MVVS/EVO because it has more cooling fins, and it weighs more......which is good in a scale plane (Again, im only guessing that the heat transfer is better than the ZDZ )
It looks like its slightly shorter from the spark plug to crank than the ZDZ, which will fit the plane easier



What do you think ?

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RE: ZDZ 90 or MVVS/Evoluton 80 ? - 12/22/2011 1:24 AM   
aussiesteve



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I don't have personal experience with the ZDZ 90 so can't comment on that specific engine but the predecessor was a nice engine in the hands of an operator that understood tuning and fine details of installation.

The MVVS 80 is also available in a Twinspark which produces better power than the Single spark version. Both versions are real powerhouses of an engine and very reliable and smooth (for a large single).

The MVVS must also be close to having their on board electric start version of the 80 available soon. I know it was getting pretty close not long ago.

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RE: ZDZ 90 or MVVS/Evoluton 80 ? - 12/22/2011 8:21 AM   
janch


 

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From: Praha, CZECH REPUBLIC
Status: offline 		Hi ,

I have not exp. with ZDZ but with MVVS 80 I am really Happy.

http://www.youtube.com/watch?v=lO4h_sZmqf0

I have had this starter since May 2011.





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RE: ZDZ 90 or MVVS/Evoluton 80 ? - 12/22/2011 1:48 PM   
kinverflyer


 

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From: Wolverhampton, UNITED KINGDOM
Status: offline 		The ZDZ90 would be my choice a real power house and the same size as the 80RVJ which has as much power as the 110cc twins, so the 90 would be awesome.
I have the ZDZ80RVJ in mine as that is what I had spare.

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RE: ZDZ 90 or MVVS/Evoluton 80 ? - 12/23/2011 1:18 PM   
butlern


 

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From: Oklahoma City, OK, USA
Status: offline 		I am also considering purchasing a ZDZ 90cc for a large warbird...

Very little info, discussion or feedback out there, not even on FG.

No one has been running the ZDZ 90cc?

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RE: ZDZ 90 or MVVS/Evoluton 80 ? - 12/23/2011 11:53 PM   
pe reivers



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Status: offline 		The starter version will be available to the publik by late January 2012.
You have been very lucky to try it out.
I just obtained their prototype to try fitting it to a 58 engine. Very nice little Bendix starter.

quote:

ORIGINAL: janch

Hi ,

I have not exp. with ZDZ but with MVVS 80 I am really Happy.

http://www.youtube.com/watch?v=lO4h_sZmqf0

I have had this starter since May 2011.






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< Message edited by pe reivers -- 12/24/2011 1:12 PM >

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Pe, (www.mvvs.nl), MVVS, MOKImotor, RCexl, MTW, Xoar, Mejzlik.
Blessing in ignorance? There is sanctuary in analysis.

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RE: ZDZ 90 or MVVS/Evoluton 80 ? - 12/24/2011 8:16 AM   
janch


 

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Status: offline 		Pe,

You are right.
I would like to send you my wish. Nice Christ. and The Best NY.



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RE: ZDZ 90 or MVVS/Evoluton 80 ? - 12/24/2011 2:19 PM   
SJN



Posts: 5791
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From: Copenhagen, DENMARK
Status: online 		Thanks for the info guys.

I guess it will be the zdz 90.
I need all the power I can get for this large plane.

The MVVS 80 starter srstem looks great.

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