Re: Electric for large Planes

On Thu, 22 May 2008 19:39:08 -0500, Glenn Jacobs
<jakeinhartsel@[EMAIL PROTECTED]
> wrote in
<Y7SdnTnQhY-xj6vVnZ2dnUVZ_uudnZ2d@[EMAIL PROTECTED]
>:

>On Wed, 21 May 2008 23:28:16 +0100, TT_Man wrote:

>> Electric is no problem. A bonus is you can drive a much bigger prop , 
>> because the rpms are lower,5- 7000 for a big motor.
>> Flight time 10 mins ish, but the killer is battery recharge.Lipos are
loads 
>> of money... Can be an expensive path to go down.

>I have flown small electrics up here and in general all I had to do was
go
>to a higher pitch prop.

>Expense is another issue that I will have to think about.

The man who won the top class in the pattern nationals
last year, Jason Shulman, did so with his electric
backup setup.  His YS "spun the prop" on takeoff and
he got a zero for that flight.  

I've seen articles on electric systems for the big
aerobatic birds--IMAC/TOC stuff.  

You **CAN** do it.  It is **being** done.

To be competitive, you need several sets of batteries
and a couple of good charging systems.

A while back, I figured it would take $3,000 to
$4,000 to get set up for pattern (11-pound planes).
I don't know how reliable those numbers are today.
I haven't followed the market.  I'm basically a
duffer.  I like to watch the big dogs fly and I
am amazed at what they do, both technologically and
on the sticks.  

Good luck with your research.  Let us know what
you decide and how it all turns out.

				Marty
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