[NSRCA-discussion] cost of electric - now engine choice

[vicenterc at comcast.net]

That has been there since long ago.  The question is:  What is the weight of the F3A version?  Remember that you will need a big pipe to get the noise down.  If you decide to use this engine do not hard mount the engine.  We did that in the Abbra and almost lost it due to aileron flutter.  Merle Hyde custom made the soft mount for that engine.  If you are interested I have pictures.  

VB

-------------- Original message -------------- 
From: brian young <brian_w_young at yahoo.com> 

ZDZ was advertising an F3A version...ie lightened version of the ZDZ 40.

http://www.rcshowcase.com/html/ZDZ/zdz40f3a.html

Might make it easier..

Brian



vicenterc at comcast.net wrote:
Kelly,

I have the opportunity to assemble the Abbra with all versions.  In the gas version we use the ZDZ 40.  The gas version was about 5-8 oz over 11 lbs.  It is possible to get it below 11 lbs but you will have hard time to keep it there as the plane gets old.  The glow version was 9 lbs 14 oz using OS 160 FX with Perry Pump.  I flew this plane for more than 500 flights.  The electric version is around 10 lbs 5 oz.  The Abbra is very light for the size.  Based on my experience, I believe that you will have very hard time to keep the Brio using gas engine below 11 lbs.  We use cross grain balsa laminated with carbon and it works well for all cases.

I assume that you will use the petrol ES pipe if you use gas engine.  I also believe that the gas engine without the pipe will be very marginal in power for Masters.  The Abbra was design to fit the ZDZ 40.  You will need to check really well if the Brio has enough space to fit the ZDZ 40 and the big petrol pipe.  

Good luck,

Vicente Bortone

   
-------------- Original message -------------- 
From: Kelly Regan <kelly.regan2 at verizon.net> 

> Thank you all for the great info on electric power. 
> 
> I think the learning curve will be steep enough without 
> adding another dimension (electric) into the mix. 
> 
> Now for my engine choice..... 
> 
> I am somewhat familiar with gas engines. Started with a 28% 
> 50cc and I have now have moved up to a 35% 100cc class 
> plane. 
> 
> I would really like to use the new ZDZ 40 gas engine but it 
> is not available yet. I am also concerned about the firewall in 
> the Brio. The firewall is cross grain balsa with carbon fiber 
> laminated on both sides. I have no idea if it would hold up 
> with a gas engine. Weight is also a concern but until the 
> engine specs are released I ! have no idea how much it will 
> weigh. 
> 
> My next choice, and certainly easier to deal with since information 
> is so widely available, would be a OS 140RX or a OS 160FX 
> with a pump. 
> 
> I have already priced out a complete package for the 160 
> with a KM header, Aeroslave pipe, with a Bud or Hyde 
> mount. 
> 
> I will be flying in sportsman, but I would rather spend 
> a little more now to get a high performace system then have 
> to start over with a new engine later on if I advance to the 
> Master's. ;) 
> 
> What are your thought's on this? 
> 
> Thank you for the help. 
> 
> John Pavlick wrote: 
> > Kelly, 
> > An OS 160Fx or OS 140Rx will fly that plane just fine. The 160Fx is a good 
> > deal even when you add the price of a pump and custom made wrap-around 
> > header (Karl Mueller makes these). There are lo! ts of p roven header / pipe 
> > setups for both of these motors - just ask. 
> > 
> > John Pavlick 
> > http://www.idseng.com 
> > 
> > 
> 
> -- 
> Kelly Regan 
> Visit the Georgetown Branch: http://mysite.verizon.net/vze6uror/ 
> Freestate Aeromodelers: http://www.freestateaeromodelers.org/ 
> 
> _______________________________________________ 
> NSRCA-discussion mailing list 
> NSRCA-discussion at lists.nsrca.org 
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion 
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