[NSRCA-discussion] Fuel Weight

[Steven Maxwell]

 We already have people that have 100 cycles and packs are as good as new -2%. There have just been completed test of single cells cycled 600 times at a 3c charger rate with little to no change in capacity, of course we can't charge the packs for pattern at this rate, no chargers with enough power at this time. Time could be a factor in pattern because most flyers are using so many packs (4-6 sets of 10s) to do there flying, so it could take as many as 2 to 3 years or more flying to which could put a time factor in the equation. Once people feel they can get by with 2 packs(10s) the #'s will start showing better cycles for our needs, in a relative time period.
 Steve Maxwell


----- Original Message ----- 
From: 
To: NSRCA Mailing List;NSRCA Mailing List
Sent: 2/17/2006 3:21:26 PM 
Subject: Re: [NSRCA-discussion] Fuel Weight


I spend around $15 per gallon (20% nitro, 2C).  That means that the cost per oz is about $0.12/oz.  I spend about 14 oz to fly the Master schedule with normal winds.  In Muncie we should use around 16 oz (2C engines).  This means that the glow fuel cost is about $1.64/flight.  For electric, the question is how many cycles is the average life of the batteries?  Let's make it easier and assume that the average life is 100 cycles.  This means that the cost per fly would be $7.40/flight.  Clearly, electric is 4.5 times more expensive assuming that 100 cycles is correct compared with 2C engines.  My personal conclusion is: I will wait until the battery manufactures give us at least equal guaranty that we get when we buy batteries for cars.

Regards,  

Vince 

-------------- Original message -------------- 
From: "Michael Laggis" <fishgod at pobox.mtaonline.net> 

It may be cheaper in the end, but laying out the $$$ to get started is the hard thing.(4 sets of batteries, chargers, power supplies/generator).  

Michael Laggis

  




From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Earl Haury
Sent: Friday, February 17, 2006 9:56 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Fuel Weight



Nat

Electricity is a whole lot cheaper than glow fuel - it's just the darn tanks that are expensive (and heavy)!

Earl
----- Original Message ----- 
From: Nat Penton 
To: NSRCA Mailing List 
Sent: Friday, February 17, 2006 12:12 PM
Subject: [NSRCA-discussion] Fuel Weight


24oz is .1875 gallons. Nitro fuel weighs about 7.5# / gal. The fuel weight would be 22.5oz, but, a pound and a half is close enough for government work.

I didn't look up the weight of electrons, but one of my battery packs weighs 2.5lb and cost $740 and I still think electric is cheaper ------- and, it doesen't take creative accounting.                         Nat




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