[NSRCA-discussion] Was "Alabama Bound", now SPA & electrics

Phil Spelt chuenkan at comcast.net
Wed Nov 25 04:37:26 AKST 2009 

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.

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.

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.

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...

At 10:34 PM 11/24/2009, Ron Van Putte wrote:
>Well, let's see:  multiply volts times amps.... <VBG>
>
>Actually, that's a really good question.  "Everyone" knows you can
>overwatt  a motor, so the motors' ratings can't be used.  But, you
>can't use more than AMA's limit of 42 volts, so you can put a DC
>clamp meter on a battery lead, to make sure a hot battery can't push
>more than about 35 amps into the ESC.
>
>Most airplanes of that era were 7 to 7 1/2 pounds, so a limit of 1400
>watts would mean the airplanes would have 187 to 200 watts per
>pound.  That's a pretty reasonable wattage for good performance of
>those kinds of airplanes doing the maneuvers of that era.
>
>Ron VP
>
>On Nov 24, 2009, at 9:19 PM, Dave wrote:
>
>>How are the watts measured?  Just curious.
>>
>>Regards,
>>
>>Dave
>>
>>-----Original Message-----
>>From: nsrca-discussion-bounces at lists.nsrca.org
>>[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
>>scott at rcfoamy.com
>>Sent: Tuesday, November 24, 2009 9:00 PM
>>To: Nsrca
>>Subject: Re: [NSRCA-discussion] Alabama Bound
>>
>>Ron,
>>
>>Max 2 stroke .61 and .91 - 4 stroke and electric now with max of 1400
>>watts...
>>No pipes or retracts and up to 1975 design..
>>
>>Scott A.
>>
>>Check out www.classic-patternrc.com
>>
>>
>>Sent from my Verizon Wireless BlackBerry
>>
>>-----Original Message-----
>>From: Ron Van Putte <vanputte at cox.net>
>>Date: Tue, 24 Nov 2009 19:39:52
>>To: General pattern discussion<nsrca-discussion at lists.nsrca.org>
>>Subject: Re: [NSRCA-discussion] Alabama Bound
>>
>>Yeah, they were and I couldn't use a Super Tigre G60 BH with Perry
>>Directional Porting either.
>>
>>I suspect that there's still a ban on 0.61 and up 2-stroke engines,
>>but 0.91 4-stroke engines are allowed?
>>
>>Ron
>>
>>On Nov 24, 2009, at 7:29 PM, Phil Spelt wrote:
>>
>>>Ron, I don't think we ever banned schneurle engines -- that's all
>>>you can get, now, I believe...they certainly are legal now.
>>>
>>>At 05:41 PM 11/24/2009, you wrote:
>>>>It's a long story, but, in the beginning, the SPA banned schneurle
>>>>ported 0.60 engines, tuned pipes and retracts, but after a while
>>>>they
>>>>decided decided to allow 0.91 4-stroke engines and I decided I'd had
>>>>enough.  I don't know what the rules are now, since I haven't
>>>>kept up
>>>>with them.
>>>>
>>>>Ron
>>>>
>>>>On Nov 24, 2009, at 4:24 PM, Stuart Chale wrote:
>>>>
>>>>>Ron how could you have dropped out of the senior pattern
>>>>>association?
>>>>>Is there an age limit?
>>>>>
>>>>>Stuart C.
>>>>>
>>>>>Ron Van Putte wrote:
>>>>>>The Aurora already is eligible in the Ballistic Pattern
>>>>>>Association.
>>>>>>
>>>>>>It probably won't be eligible in the Senior Pattern Association,
>>>>>>because the Aurora has retracts and I know that retracts were not
>>>>>>allowed in SPA when I dropped out of it.
>>>>>>
>>>>>>Ron VP.
>>>>>>
>>>>>>
>>>>>>On Nov 24, 2009, at 1:21 PM, Woodward, Jim (US SSA) wrote:
>>>>>>
>>>>>>>OK  when will the Aurora become an active plane?  Or, I guess I
>>>>>>>could get something else. Jim
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-
>>>>>>> >>>>>> discussion-bounces at lists.nsrca.org] On Behalf Of Phil Spelt
>>>>>>>Sent: Tuesday, November 24, 2009 2:18 PM
>>>>>>>To: General pattern discussion
>>>>>>>Subject: Re: [NSRCA-discussion] Alabama Bound
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>Jim, you are moving into the HEART of Senior Pattern territory --
>>>>>>>check us out...
>>>>>>>
>>>>>>>At 01:21 PM 11/24/2009, Jim Woodward wrote:
>>>>>>>
>>>>>>>Hi Guys,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>I have accepted a new position within BAE Systems and will move
>>>>>>>up to the Albertville, AL area in the next few weeks.  I'm
>>>>>>>looking forward to flying with the guys in the Huntsville and
>>>>>>>Atlanta areas!!
>>>>>>>
>>>>>>>Thanks,
>>>>>>>
>>>>>>>Jim
>>>>>>>
>>>>>>>_______________________________________________
>>>>>>>NSRCA-discussion mailing list
>>>>>>>NSRCA-discussion at lists.nsrca.org
>>>>>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>>>>
>>>>>>>--> There are only two types of aircraft -- fighters and targets.
>>>>>>>
>>>>>>>Phil Spelt, Past President, Knox County Radio Control Society,
>>>>>>>Inc.
>>>>>>>        URL: http://www.kcrctn.com
>>>>>>>AMA--1294,  Scientific Leader Member, SPA--177
>>>>>>>       My URL: http://mywebpages.comcast.net/~chuenkan/
>>>>>>>       (865) 435-1476 v  (865) 604-0541 c
>>>>>>>
>>>>>>>_______________________________________________
>>>>>>>NSRCA-discussion mailing list
>>>>>>>NSRCA-discussion at lists.nsrca.org
>>>>>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>>>
>>>>>>_______________________________________________
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>>>>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>>
>>>>>_______________________________________________
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>>>>>NSRCA-discussion at lists.nsrca.org
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>>>>
>>>>_______________________________________________
>>>>NSRCA-discussion mailing list
>>>>NSRCA-discussion at lists.nsrca.org
>>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>--> There are only two types of aircraft -- fighters and targets.
>>>
>>>Phil Spelt, Past President, Knox County Radio Control Society, Inc.
>>>        URL: http://www.kcrctn.com
>>>AMA--1294,  Scientific Leader Member, SPA--177
>>>       My URL: http://mywebpages.comcast.net/~chuenkan/
>>>       (865) 435-1476 v  (865) 604-0541 c
>>>
>>>_______________________________________________
>>>NSRCA-discussion mailing list
>>>NSRCA-discussion at lists.nsrca.org
>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>
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>
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-->There are only two types of aircraft -- fighters and targets.

Phil Spelt, Past President, Knox County Radio Control Society, Inc.
        URL: http://www.kcrctn.com
AMA--1294,  Scientific Leader Member, SPA--177
       My URL: http://mywebpages.comcast.net/~chuenkan/
       (865) 435-1476 v  (865) 604-0541 c  
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