Re: Re: P-18 plans and Specs

From: Ken Achee <ken_at_achee.com>
Date: Thu, 31 Mar 2016 22:00:23 -0500

Why was the limit put at 5.5". Wouldn't it be a lot easier to find props
if the diameter was increased to 6"?


On Thu, Mar 31, 2016 at 9:55 PM, Manuel Cisneros macs8953_at_yahoo.com
[Indoor_Construction] <Indoor_Construction_at_yahoogroups.com> wrote:

>
>
> Regarding the search for plastic props for P-18, is there any thought to
> using the Ikara 4.3" prop? What it missing in diameter may be made up by
> the wider chord.
>
> At .6 gm it would seem a lightweight alternative to the typical 5-5.5"
> garden variety prop, and that may be with the included bearing and spinner.
>
> Manuel.
>
> Sent due to the efforts of Engineers
>
>
>
> I'm not necessarily looking for an entire assembly, just any 5.5" prop
> that I can find at a store or my local hobby shop. At this point I'm going
> to settle for one of the 5" props I have and see how it goes. I have one
> from a Guillows model, and another from an Estes model.
>
> The proposal had the rules below.
>
> 27. P-18 event 227
> 27.1 Except for the specific rules that apply to this event, the rules for
> free flight rubber hand launched stick shall apply.
> 27.2 The model shall be a rubber powered monoplane covered with either
> tissue or HDPE plastic shopping bag material.
> 27.3 The wing shall not exceed 4.5 inch chord and projected span of 18
> inches. Horizontal stabilizer shall not exceed maximum span of 9 inches
> with a maximum chord of 3.5 inches. Maximum overall length, including the
> propeller shall not exceed 18 inches.
> 27.4 The propeller shall be an unmodified commercially available unit with
> a maximum diameter of 5.5 inches. Weight may be added to the blade for
> balancing.
> 27.5 The maximum hook to hook distance shall not exceed 10 inches.
> 27.6. The minimum weight of the completed model, less rubber, shall be 7.5
> grams.
>
> On Thu, Mar 31, 2016 at 7:41 AM, mkirda_at_sbcglobal.net
> [Indoor_Construction] <Indoor_Construction_at_yahoogroups.com> wrote:
>
>>
>>
>> Where are the 'official' rules for P18 located?
>>
>> Regards.
>> Mike Kirda
>>
>
>
>
Received on Thu Mar 31 2016 - 20:00:24 CEST