[NSRCA-discussion] [SPAM] Re: Wing Construction

Wed Nov 7 12:43:09 AKST 2007

Putting in my vote for Epoxy, applied with a syringe (NOT spread over the
entire core), as the preferred method for light and strong.   But I know
everyone has their preference.

-Mark

On 11/7/07 4:35 PM, "Earl Haury" <ejhaury at comcast.net> wrote:

> Nat
>  
> I tried the double sided tape years ago. The surfaces must be very clean for
> it to work, even then the stuff didn't last and was heavier than epoxy. Having
> tried most of the popular adhesives and tested them for strength, epoxy and
> poly-u are the only products I consider acceptable. I've found that the poly-u
> produces a "wavy" wing surface after a couple of years. Not de-adhesion but
> (apparently) continued expansion? Anyway, epoxy provides the strongest,
> lightest, most durable skin adhesion (in my experience).
>  
> Earl
>>  
>> ----- Original Message -----
>>  
>> From:  Nat  Penton <mailto:natpenton at centurytel.net>
>>  
>> To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>
>>  
>> Sent: Wednesday, November 07, 2007 2:36  PM
>>  
>> Subject: [SPAM] Re: [NSRCA-discussion]  Wing Construction
>>  
>> 
>>  
>> I have  double sided wing tape, about 4"  wide - used for attaching wing
>> skins - that has never been used. Any  recollections regarding this stuff ???
>>  
>>  
>>  
>> I could do a sample to determine weight. Am  wondering about tenacity and
>> longevity ???  Nat
>>  
>>>  
>>> ----- Original Message -----
>>>  
>>> From:  rcmaster199 at aol.com
>>>  
>>> To: nsrca-discussion at lists.nsrca.org
>>>  
>>> Sent: Wednesday, November 07, 2007 8:21  AM
>>>  
>>> Subject: Re: [NSRCA-discussion] Wing  Construction
>>>  
>>> 
>>>  
>>> The  few grams one would save by not applying glue to the skins in the open
>>> bay  areas isn't worth the hassle, in my experience.
>>>  
>>>  
>>>  
>>> I use the roller for skinning and apply a lite even coat to the sealed  skin
>>> and then use the residual wetness on the roller to touch the foam. It  helps
>>> produce a more even, more consistent joint. Skins are sealed  using a
>>> lite-med coat of hairspray. I have also used nitrate dope for  sealing which
>>> works extremely well, except I wait 2 days to fully flash the  solvent.
>>>  
>>>  
>>>  
>>> A quick point on wing weight.... my 500 sq inch panels usually work out  to
>>> weigh around 8.5-9.0 ozs each ready to cover. With reasonable technique,
>>> the panels come in at around 13 to 13.5 ozs, fully painted and ready for
>>> servo and linkage. There just isn't much more weight savings to be had in
>>> wing construction. That's one reason why I usually concentrate my weight
>>> savings approach to the fuse. The fuse often offers much greater
>>> opportunity for savings than wings do. I often measure the weight savings in
>>> ounces, not grams, when constructing the fuse.
>>>  
>>>  
>>>  
>>> regards,
>>>  
>>> MattK
>>>  
>>>  
>>>  
>>>  
>>>  
>>> 
>>>  
>>> 
>>> -----Original Message-----
>>> From: Karl G. Mueller  <kgamueller at rogers.com>
>>> To: NSRCA Mailing List  <nsrca-discussion at lists.nsrca.org>
>>> Sent: Wed, Nov 7 8:55  AM
>>> Subject: Re: [NSRCA-discussion] Wing Construction
>>> 
>>>  
>>>  
>>> Lance,
>>>  
>>>  
>>>  
>>> Do you apply the glue to the skins or to the foam core in  case of a
>>>  
>>> cored (with cut-outs for weight saving) foam core. I  thought that the
>>>  
>>> amount of glue spread on the skins in the areas that do  not make
>>>  
>>> contact with the foam would be unnecessary weight. It  will strengthen
>>>  
>>> the skin some.
>>>  
>>>  
>>>  
>>> Karl G. Mueller
>>> kgamueller at rogers.com
>>>  
>>>>  
>>>> ----- Original Message -----
>>>>  
>>>> From:  Lance  Van Nostrand <mailto:patterndude at tx.rr.com>
>>>>  
>>>> To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>
>>>>  
>>>> Sent: Tuesday, November 06, 2007  11:13 PM
>>>>  
>>>> Subject: Re: [NSRCA-discussion] Wing  Construction
>>>>  
>>>> 
>>>>  
>>>> Foam roller, my friend.  a squeegee will  force resin into the pores and
>>>> away from the joint.  Only a roller  applied fast and light can meter the
>>>> material properly and keep in on the  surface.
>>>>  
>>>> --Lance
>>>>  
>>>>  
>>>>  
>>>>>  
>>>>> ----- Original Message -----
>>>>>  
>>>>> From:  Nat Penton <mailto:natpenton at centurytel.net>
>>>>>  
>>>>> To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>
>>>>>  
>>>>> Sent: Tuesday, November 06, 2007  9:32 PM
>>>>>  
>>>>> Subject: [NSRCA-discussion] Wing  Construction
>>>>>  
>>>>> 
>>>>>  
>>>>> To skin a foam core with contest grade  balsa does anyone have a preferred
>>>>> way to determine when the amount  of epoxy applied is adequate - using
>>>>> Easy Lam epoxy. I have been  reluctant to use a squeegie, afraid of
>>>>> scoring the balsa. Would  appreciate any  comments.
>>>>> Nat
>>>>>  
>>>>>  
>>>>> 
>>>>>  
>>>>> _______________________________________________
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>>>>> NSRCA-discussion at lists.nsrca.org
>>>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>  
>>>>  
>>>> 
>>>>  
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>>>  
>>> 
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>>>  
>>> 
>>>  
>>> 
>>>  
>>> 
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>>  
>> 
>>  
>> 
>>  
>> 
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