[NSRCA-discussion] weight difference

[Keith Hoard]

More or less?

On Tue, Aug 17, 2010 at 3:58 PM, Ron Van Putte <vanputte at cox.net> wrote:

> Tough question.  Will you insist on using 30C lipos, when 20C lipos are
> much lighter?  Do you plan on using a particular motor?  Motor weights vary
> substantially.  Some ESCs are a lot heavier than others.
>
> My guess would be that the weight difference between a complete
> electric-power system and a complete glow-power system, disregarding the
> airplane, would be 10-16 ounces.
>
> Ron
>
>
> On Aug 17, 2010, at 8:51 AM, Dr Mike wrote:
>
>  Ok so I am going to ask the question again... in your estimation what is
>> the
>> difference in weight between the complete electric power system and the
>> complete glow system-disregarding the airplane?
>> Mike
>>
>> -----Original Message-----
>> From: nsrca-discussion-bounces at lists.nsrca.org
>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Ron Van
>> Putte
>> Sent: Tuesday, August 17, 2010 8:30 AM
>> To: General pattern discussion
>> Subject: Re: [NSRCA-discussion] weight difference
>>
>> Dave WAS trying to show the difference between glow and electric.
>>
>> Generally, airplanes that started out as glow-powered are heavier
>> than one for electric power, because of the vibration.  The
>> difference between the two packages gets complicated.  For glow, you
>> include spinner, prop, engine, motor mount, ignition system, fuel
>> tubing (and fittings), fuel tank and anything else which is
>> exclusively for glow.  For electric, you include spinner, prop,
>> motor, motor mount, ESC, wiring, lipo batteries and anything else
>> which is exclusively for electric.  When you add it up, the weight
>> differences can be pretty dramatic.  If you don't carefully select
>> all the components, you can easily add an unneeded 4 ounces to an
>> electric-powered airplane.
>>
>> Ron
>>
>> On Aug 17, 2010, at 7:49 AM, Dr Mike wrote:
>>
>>  Thanks Dave, I am referring only to the power packages,not the
>>> planes. Those are what I am looking for, the difference between
>>> glow and electric.
>>>
>>> Mike
>>>
>>>
>>>
>>> From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-
>>> discussion-bounces at lists.nsrca.org] On Behalf Of Dave
>>> Sent: Tuesday, August 17, 2010 7:41 AM
>>> To: 'General pattern discussion'
>>> Subject: Re: [NSRCA-discussion] weight difference
>>>
>>>
>>>
>>> 12 oz +/-4 oz.
>>>
>>>
>>>
>>> Exact number depends on a bunch of things -
>>>
>>> - on the electric side, which motor, motor mounting, ESC, lipo, RX
>>> power system?
>>>
>>> - was the plane originally built lighter for electric, or with more
>>> beef for glow?
>>>
>>> - CDI / non CDI, type of mount, and what type of ignition and RX
>>> power?
>>>
>>>
>>>
>>> I can tell you that a number of Prestige planes have been built
>>> with various glow and electric power plants.  For the most part,
>>> the glow airframes are +4 oz to start with (the added beef for glow
>>> vibration).  Most of the glow setups ended up at 9.5 lbs, +/- 4
>>> oz.  Most of the electrics ended up at 10.25 lbs, +/- 4 oz.
>>>
>>>
>>>
>>> Regards,
>>>
>>>
>>>
>>> Dave
>>>
>>> From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-
>>> discussion-bounces at lists.nsrca.org] On Behalf Of Dr Mike
>>> Sent: Tuesday, August 17, 2010 8:33 AM
>>> To: 'General pattern discussion'
>>> Subject: [NSRCA-discussion] weight difference
>>>
>>>
>>>
>>> Could someone tell me the difference in weight between say a YS 1.7
>>> with muffler/tank,etc vs electric?
>>>
>>> Thanks
>>>
>>> Mike
>>>
>>> _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
>>
>> _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion at lists.nsrca.org
>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>
>> _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion at lists.nsrca.org
>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>



-- 

Keith Hoard
Collierville, TN
khoard at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20100817/c2e1ca0d/attachment.html>