Re: Re: Exact Builder of Model Rule

From: Phedon Tsiknopoulos <phedon21t_at_yahoo.com>
Date: Sat, 8 Feb 2014 22:21:10 -0800

What do you mean by successfully?
Were the models overweight?
Were the times aloft pretty good by comparison?
What can be done to improve them?
Is that type of carbon prepreg available only in Europe? Any info on this subject will be greatly appreciated. Ciao, Phedon.
Sent from my iPhone

On Feb 8, 2014, at 9:01 PM, Nick Ray <lasray_at_gmail.com> wrote:

> Carbon tubes were successfully used at the 2012 world champs. I suspect we will see some this year as well.
>
>
> On Sat, Feb 8, 2014 at 11:30 PM, Phedon Tsiknopoulos <phedon21t_at_yahoo.com> wrote:
>>
>> According to Steve Brown a very stiff tube is worthless because it just does not flex downwards enough in order to give some very much needed down thrust during the initial burst.
>> So carbon is out on all counts!
>>
>> Sent from my iPhone
>>
>> On Feb 8, 2014, at 12:56 PM, Kevin Lamers <kevin.lamers_at_gmail.com> wrote:
>>
>>>
>>> The weight of 225 mg is for a carbon tube with a length of 10". 9" I can also make at 200 mg.
>>> My ID is 4.8mm = 0.2". They are probably stiff/strong enough to use without bracing.
>>>
>>> OK keep your process secret, but please share the material you used ;-)
>>>
>>> Kevin
>>>
>>>
>>> 2014-02-08 21:41 GMT+01:00 Phedon Tsiknopoulos <phedon21t_at_yahoo.com>:
>>>>
>>>> Carbon is unsuitable for motor tubes.
>>>> My tubes have no carbon. Prepreg is too heavy.
>>>> My process will remain a secret.
>>>> What length are your tubes as you use them for official flights?
>>>> I shall be sending Mike Kirda a 9" one in order to test it
>>>> Mine are 1/4" I.D.
>>>>
>>>>
>>>>
>>>>
>>>> Sent from my iPhone
>>>>
>>>> On Feb 8, 2014, at 11:56 AM, Kevin Lamers <kevin.lamers_at_gmail.com> wrote:
>>>>
>>>>>
>>>>> Best wishes,
>>>>> Kevin
>
>
Received on Sat Feb 08 2014 - 22:21:16 CET