Look on the RetroRC site for a prop making kit. I'm off to Science
Olympiad now.
Fred Rash
On 1/12/2017 12:07 PM, Chuck Andraka ceandra_at_comcast.net
[Indoor_Construction] wrote:
> Don:
>
> I have been helping an SO team last year and this, and the Hip Pocket
> site has been great.
>
> We are using a "bucket prop" from a Solo beer cup, with a Bill Gowen
> style hub for flaring. We only have two carbon rods because it is so
> small this year.
>
> We are also finding with the small prop and similarly thin rubber that
> the rubber falls off very fast, so keep track of how many flights on a
> piece of rubber in your data. More than 2 or 3 you can use for
> trimming purposes, but not so much for optimizing duration.
>
> Chuck Andraka
>
> ------------------------------------------------------------------------
> *From: *"dweigt47_at_gmail.com [Indoor_Construction]"
> <Indoor_Construction_at_yahoogroups.com>
> *To: *"Indoor Construction" <Indoor_Construction_at_yahoogroups.com>
> *Sent: *Thursday, January 12, 2017 9:57:03 AM
> *Subject: *Re: [Indoor_Construction] Any A6 tutorial?
>
> Thanks for the reminder about Hip Pocket Aeronautics! I'd heard of it
> on this list before, but not bothered to look at the site. I did now,
> and immediately bookmarked it. It looks very promising.
>
>
> I've offered my meager skills to help a local young modeler trim his
> already built Science Olympiad model. I may find useful info at Hip
> Pocket, as well as this list. I think I need to study the rules. It
> seems likely that making a prop, if allowed, could increase endurance
> a lot from the standard heavy plastic unit. There is the "slight
> problem" that I've never made one, even cutting blades out of the side
> of a plastic tub...
>
> I do know he'll want to get the CG rearward and the plane trimmed for
> slow flight. What I'm not sure of is how slow. In full scale aviation
> there is a speed below which it takes more power for level flight,
> which is not what is wanted here, with low and limited power. Is there
> a similar situation with indoor, and how can you recognize the optimum
> speed if there is? Just keep trimming and recording results, and hope
> conditions are constant enough to make them meaningful?
>
> Thanks,
>
> Don Weigt
> Madison, WI
>
>
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Received on Thu Jan 12 2017 - 11:43:57 CET