Composite-ARF Impact question

[Bill Southwell]

"I wonder if they are using CNC'd aluminum
molds."   

>From what is shown on the C-ARF web site looks like a standard glass mold layup/tooling. besides if cnc'ed The ahh imperfection would probably not be there. Mr Geitz reply says a lot.............   







Amir Neshati wrote:

>Ed, I'm sure they pull gently ;-) I wonder if they are using CNC'd aluminum
>molds.
>
>I find it hard to believe that 350 different pilots actually can all fly
>straight, regardless
>of their planes, or recognize a not so straight machine in flight.
>
>Back to you, Ed....I hope that satisfied some of your "curies" ;-)
>  
>
>>WOW! 350 pulls from the same mold! I'm impressed! I really like to see the
>>molds. We're usually replacing molds after 100 pulls max. After that, the
>>quality especially the parting line (seam) would be unacceptable to our
>>quality standard. Guess, I still have a lot to learn.
>>
>>Also, how do they know all 350 fly perfectly straight? Did they call
>>everyone to verify? Just curies. ed
>>
>>----- Original Message -----
>>From: Adam Quennoz <aquennoz at ipa.net>
>>To: <discussion at nsrca.org>
>>Sent: Tuesday, February 01, 2005 4:26 PM
>>Subject: Re: Composite-ARF Impact question
>>
>>
>>    
>>
>>>I'm glad to see others are seeing the same thing.  I thought I was
>>>nuts.  I e-mailed Composite-ARF about this issue.  Here's the reply:
>>>
>>>Hello Adam,
>>>
>>>since 350 Impacts come from the same molds, and all fly perfectly
>>>      
>>>
>>straight,
>>    
>>
>>>there is no manufacturing error in yours.
>>>
>>>The center line (seam line) is a little bit out of center, this might
>>>      
>>>
>make
>  
>
>>>it appear not straight, possibly.
>>>
>>>If the fuselage got pressure during shipping / storing, so that the fin
>>>      
>>>
>>was
>>    
>>
>>>slightly twisted in the box, this can be easily fixed when gluing in the
>>>rear hinge post. But actually, I do not think that you would have to
>>>      
>>>
>make
>  
>
>>>any corrections, as I know that the fin appears to be a little bit off,
>>>      
>>>
>>but
>>    
>>
>>>it doesn't. the planes fly dead straight.
>>>
>>>
>>>
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>>>      
>>>
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>>
>>    
>>
>
>
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>  
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