Re: Re: P-18 plans and Specs

From: William Carney <wcarneyjx_at_gmail.com>
Date: Fri, 1 Apr 2016 09:39:22 -0400

Good question Ken.

Bill C
On Mar 31, 2016 9:00 PM, "Ken Achee ken_at_achee.com [Indoor_Construction]" <
Indoor_Construction_at_yahoogroups.com> wrote:

>
>
> 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 Fri Apr 01 2016 - 06:39:23 CEST