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<font size=3>We in SPA, for the just-concluded season, wanted a wattage
that made electrics comparable to the 61's and 91's available now -- some
of our electric gurus came up with 1400 watts, measured with an in-line
watt meter just before the motor @ full throttle. Yes, there are
ways to "cheat" and we have new specifications for electrics
ready to roll out for 2010. I am in the process of writing that
part of the Competitor's guide, and as soon as it is approved by our BOD,
I will "publish" them.<br><br>
However, as technology for batteries, motors and the intervening
electronics continues to improve, I have a feeling we will be continually
chasing our tails trying to keep up with our regulations.<br><br>
It should be noted, however, that one of our BOD members has thoroughly
researched the electric propulsion from that era, and there was NONE in
patttern -- I found an article from 1937 MAN that talked about electric
for R/C, but not for pattern. I doubt it would have been at
all competitive with electric stuff from the early 1970s. We
are including electrics because a very few of our members want to do it,
and the BOD decided we could try it to see if we could make it work and
keep things roughly equally competitive.<br><br>
Also note, that, despite what Ron Van P. said, ANY .61 2-stroke is
legal. Also please note that we welcome anyone who wished to
compete in the traditional pattern flying, as long as they are willing to
abide by our rules. If not, as others have noted, there are NSRCA,
BPA, and VR/CS available...<br><br>
At 10:34 PM 11/24/2009, Ron Van Putte wrote:<br>
<blockquote type=cite class=cite cite="">Well, let's see: multiply
volts times amps.... <VBG><br><br>
Actually, that's a really good question. "Everyone" knows
you can <br>
overwatt a motor, so the motors' ratings can't be used. But,
you <br>
can't use more than AMA's limit of 42 volts, so you can put a DC
<br>
clamp meter on a battery lead, to make sure a hot battery can't
push <br>
more than about 35 amps into the ESC.<br>
<br>
Most airplanes of that era were 7 to 7 1/2 pounds, so a limit of
1400 <br>
watts would mean the airplanes would have 187 to 200 watts per
<br>
pound. That's a pretty reasonable wattage for good performance
of <br>
those kinds of airplanes doing the maneuvers of that era.<br><br>
Ron VP<br><br>
On Nov 24, 2009, at 9:19 PM, Dave wrote:<br><br>
<blockquote type=cite class=cite cite="">How are the watts
measured? Just curious.<br><br>
Regards,<br><br>
Dave<br><br>
-----Original Message-----<br>
From: nsrca-discussion-bounces@lists.nsrca.org<br>
[<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" eudora="autourl">
mailto:nsrca-discussion-bounces@lists.nsrca.org</a>] On Behalf Of<br>
scott@rcfoamy.com<br>
Sent: Tuesday, November 24, 2009 9:00 PM<br>
To: Nsrca<br>
Subject: Re: [NSRCA-discussion] Alabama Bound<br><br>
Ron,<br><br>
Max 2 stroke .61 and .91 - 4 stroke and electric now with max of
1400<br>
watts...<br>
No pipes or retracts and up to 1975 design..<br><br>
Scott A.<br><br>
Check out
<a href="http://www.classic-patternrc.com/" eudora="autourl">
www.classic-patternrc.com</a><br><br>
<br>
Sent from my Verizon Wireless BlackBerry<br><br>
-----Original Message-----<br>
From: Ron Van Putte <vanputte@cox.net><br>
Date: Tue, 24 Nov 2009 19:39:52<br>
To: General pattern
discussion<nsrca-discussion@lists.nsrca.org><br>
Subject: Re: [NSRCA-discussion] Alabama Bound<br><br>
Yeah, they were and I couldn't use a Super Tigre G60 BH with Perry<br>
Directional Porting either.<br><br>
I suspect that there's still a ban on 0.61 and up 2-stroke engines,<br>
but 0.91 4-stroke engines are allowed?<br><br>
Ron<br><br>
On Nov 24, 2009, at 7:29 PM, Phil Spelt wrote:<br><br>
<blockquote type=cite class=cite cite="">Ron, I don't think we ever
banned schneurle engines -- that's all<br>
you can get, now, I believe...they certainly are legal now.<br><br>
At 05:41 PM 11/24/2009, you wrote:<br>
<blockquote type=cite class=cite cite="">It's a long story, but, in the
beginning, the SPA banned schneurle<br>
ported 0.60 engines, tuned pipes and retracts, but after a while
<br>
they<br>
decided decided to allow 0.91 4-stroke engines and I decided I'd had<br>
enough. I don't know what the rules are now, since I haven't
<br>
kept up<br>
with them.<br><br>
Ron<br><br>
On Nov 24, 2009, at 4:24 PM, Stuart Chale wrote:<br><br>
<blockquote type=cite class=cite cite="">Ron how could you have dropped
out of the senior pattern<br>
association?<br>
Is there an age limit?<br><br>
Stuart C.<br><br>
Ron Van Putte wrote:<br>
<blockquote type=cite class=cite cite="">The Aurora already is eligible
in the Ballistic Pattern<br>
Association.<br><br>
It probably won't be eligible in the Senior Pattern Association,<br>
because the Aurora has retracts and I know that retracts were not<br>
allowed in SPA when I dropped out of it.<br><br>
Ron VP.<br><br>
<br>
On Nov 24, 2009, at 1:21 PM, Woodward, Jim (US SSA) wrote:<br><br>
<blockquote type=cite class=cite cite="">OK when will the Aurora
become an active plane? Or, I guess I<br>
could get something else. Jim<br><br>
<br><br>
From: nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-<br>
>>>>>> discussion-bounces@lists.nsrca.org] On Behalf Of
Phil Spelt<br>
Sent: Tuesday, November 24, 2009 2:18 PM<br>
To: General pattern discussion<br>
Subject: Re: [NSRCA-discussion] Alabama Bound<br><br>
<br><br>
Jim, you are moving into the HEART of Senior Pattern territory --<br>
check us out...<br><br>
At 01:21 PM 11/24/2009, Jim Woodward wrote:<br><br>
Hi Guys,<br><br>
<br><br>
I have accepted a new position within BAE Systems and will move<br>
up to the Albertville, AL area in the next few weeks. I'm<br>
looking forward to flying with the guys in the Huntsville and<br>
Atlanta areas!!<br><br>
Thanks,<br><br>
Jim<br><br>
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--> There are only two types of aircraft -- fighters and
targets.<br><br>
Phil Spelt, Past President, Knox County Radio Control Society,<br>
Inc.<br>
URL:
<a href="http://www.kcrctn.com/" eudora="autourl">
http://www.kcrctn.com</a><br>
AMA--1294, Scientific Leader Member, SPA--177<br>
My URL:
<a href="http://mywebpages.comcast.net/~chuenkan/" eudora="autourl">
http://mywebpages.comcast.net/~chuenkan/</a><br>
(865) 435-1476 v (865) 604-0541
c<br><br>
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--> There are only two types of aircraft -- fighters and
targets.<br><br>
Phil Spelt, Past President, Knox County Radio Control Society, Inc.<br>
URL:
<a href="http://www.kcrctn.com/" eudora="autourl">
http://www.kcrctn.com</a><br>
AMA--1294, Scientific Leader Member, SPA--177<br>
My URL:
<a href="http://mywebpages.comcast.net/~chuenkan/" eudora="autourl">
http://mywebpages.comcast.net/~chuenkan/</a><br>
(865) 435-1476 v (865) 604-0541
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<b><i>--></font><font face="Arial, Helvetica" size=3 color="#800000">
There are only two types of aircraft -- fighters and targets.<br><br>
</i></b></font><font size=3>Phil Spelt, Past President, Knox County Radio
Control Society, Inc.<br>
URL:
<a href="http://www.kcrctn.com/" eudora="autourl">
http://www.kcrctn.com<br>
</a>AMA--1294, Scientific Leader Member, SPA--177<br>
My URL:
<a href="http://mywebpages.comcast.net/~chuenkan/" eudora="autourl">
http://mywebpages.comcast.net/~chuenkan/<br>
</a> (865) 435-1476 v (865) 604-0541
c </font></body>
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