[NSRCA-discussion] NSRCA-discussion Digest, Vol 41, Issue 28

[brian young]

ehh....and living in Oklahoma we have some wind...your results may vary    

--- On Wed, 4/29/09, brian young <brian_w_young at yahoo.com> wrote:


From: brian young <brian_w_young at yahoo.com>
Subject: Re: [NSRCA-discussion] NSRCA-discussion Digest, Vol 41, Issue 28
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Date: Wednesday, April 29, 2009, 3:51 PM






How about a Windmill too? It would refill the Batteries during OFF Peak flying times.... ;)

--- On Wed, 4/29/09, Roger Hammel <skitimberlakespartava at yahoo.com> wrote:


From: Roger Hammel <skitimberlakespartava at yahoo.com>
Subject: Re: [NSRCA-discussion] NSRCA-discussion Digest, Vol 41, Issue 28
To: nsrca-discussion at lists.nsrca.org
Cc: "Roger Hammel" <skitimberlake at verizon.net>
Date: Wednesday, April 29, 2009, 3:48 PM







Is anyone aware of an RC club that has implemented a solar powered charging station for electric fliers ?  My club has strongly supported the concept, voted to approve funds, and I would like to get hard data and experience from others on several system items.  
 
Two of our electric fliers/engineers have designed what they believe will be a scalable system, borrowing from their experience in powering wireless base stations and other similar applications.  I wanted to compare their numbers to any hard experience from RC users.
 
We lack good data on typical use per pilot. Our club is not all that Pattern heavy, but does have many electric fliers using 3s-4s packs in say the sub 4000 Mah size. For the most part, these systems power planes typically smaller than 40 size.  Were I to guess, Eflite 480 size may be .typical or say average size plane.
 
Any data and experience would be appreciated.  Need data on :
a) the number of anticipated electric pilots and expected average weekly capacity used per pilot from existing solar powered systems  
b) the size & type of the battery (deep cycle) used to store power - e.g. number of Mah and type - wet cell, gel cell or AGM, and the typical max discharge % anticipated; 
c) - the recharge time (days or hours) to recharge the storage battery from normal max use drawdown; 
d) the number and size of the solar panels used; and power output (amps) at say 16-17v range
e) the capacity of the charge controller used.
 
offline replies welcomed too - skitimberlakespartava at yahoo.com
 
thanks
 
Roger Hammel


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