More or less?<br><br><div class="gmail_quote">On Tue, Aug 17, 2010 at 3:58 PM, Ron Van Putte <span dir="ltr"><<a href="mailto:vanputte@cox.net">vanputte@cox.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Tough question. Will you insist on using 30C lipos, when 20C lipos are much lighter? Do you plan on using a particular motor? Motor weights vary substantially. Some ESCs are a lot heavier than others.<br>
<br>
My guess would be that the weight difference between a complete electric-power system and a complete glow-power system, disregarding the airplane, would be 10-16 ounces.<br><font color="#888888">
<br>
Ron</font><div><div></div><div class="h5"><br>
<br>
On Aug 17, 2010, at 8:51 AM, Dr Mike wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Ok so I am going to ask the question again... in your estimation what is the<br>
difference in weight between the complete electric power system and the<br>
complete glow system-disregarding the airplane?<br>
Mike<br>
<br>
-----Original Message-----<br>
From: <a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a><br>
[mailto:<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a>] On Behalf Of Ron Van Putte<br>
Sent: Tuesday, August 17, 2010 8:30 AM<br>
To: General pattern discussion<br>
Subject: Re: [NSRCA-discussion] weight difference<br>
<br>
Dave WAS trying to show the difference between glow and electric.<br>
<br>
Generally, airplanes that started out as glow-powered are heavier<br>
than one for electric power, because of the vibration. The<br>
difference between the two packages gets complicated. For glow, you<br>
include spinner, prop, engine, motor mount, ignition system, fuel<br>
tubing (and fittings), fuel tank and anything else which is<br>
exclusively for glow. For electric, you include spinner, prop,<br>
motor, motor mount, ESC, wiring, lipo batteries and anything else<br>
which is exclusively for electric. When you add it up, the weight<br>
differences can be pretty dramatic. If you don't carefully select<br>
all the components, you can easily add an unneeded 4 ounces to an<br>
electric-powered airplane.<br>
<br>
Ron<br>
<br>
On Aug 17, 2010, at 7:49 AM, Dr Mike wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Thanks Dave, I am referring only to the power packages,not the<br>
planes. Those are what I am looking for, the difference between<br>
glow and electric.<br>
<br>
Mike<br>
<br>
<br>
<br>
From: <a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a> [mailto:<a href="mailto:nsrca-" target="_blank">nsrca-</a><br>
<a href="mailto:discussion-bounces@lists.nsrca.org" target="_blank">discussion-bounces@lists.nsrca.org</a>] On Behalf Of Dave<br>
Sent: Tuesday, August 17, 2010 7:41 AM<br>
To: 'General pattern discussion'<br>
Subject: Re: [NSRCA-discussion] weight difference<br>
<br>
<br>
<br>
12 oz +/-4 oz.<br>
<br>
<br>
<br>
Exact number depends on a bunch of things -<br>
<br>
- on the electric side, which motor, motor mounting, ESC, lipo, RX<br>
power system?<br>
<br>
- was the plane originally built lighter for electric, or with more<br>
beef for glow?<br>
<br>
- CDI / non CDI, type of mount, and what type of ignition and RX<br>
power?<br>
<br>
<br>
<br>
I can tell you that a number of Prestige planes have been built<br>
with various glow and electric power plants. For the most part,<br>
the glow airframes are +4 oz to start with (the added beef for glow<br>
vibration). Most of the glow setups ended up at 9.5 lbs, +/- 4<br>
oz. Most of the electrics ended up at 10.25 lbs, +/- 4 oz.<br>
<br>
<br>
<br>
Regards,<br>
<br>
<br>
<br>
Dave<br>
<br>
From: <a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a> [mailto:<a href="mailto:nsrca-" target="_blank">nsrca-</a><br>
<a href="mailto:discussion-bounces@lists.nsrca.org" target="_blank">discussion-bounces@lists.nsrca.org</a>] On Behalf Of Dr Mike<br>
Sent: Tuesday, August 17, 2010 8:33 AM<br>
To: 'General pattern discussion'<br>
Subject: [NSRCA-discussion] weight difference<br>
<br>
<br>
<br>
Could someone tell me the difference in weight between say a YS 1.7<br>
with muffler/tank,etc vs electric?<br>
<br>
Thanks<br>
<br>
Mike<br>
<br>
_______________________________________________<br>
NSRCA-discussion mailing list<br>
<a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
</blockquote>
<br>
_______________________________________________<br>
NSRCA-discussion mailing list<br>
<a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
<br>
_______________________________________________<br>
NSRCA-discussion mailing list<br>
<a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
</blockquote>
<br>
_______________________________________________<br>
NSRCA-discussion mailing list<br>
<a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br><br>Keith Hoard<br>Collierville, TN<br><a href="mailto:khoard@gmail.com">khoard@gmail.com</a><br><br><br>