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tonyrenshaw268(at)gmail.c
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 Posted: Mon Jun 08, 2020 10:56 pm Post subject: Post curing wings with weight on spar when layed flat. |
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Gidday,
I have a jig that supports my spars at 200 mm (8”) from the closeout, and a rotisserie fitting in the wingtips, orientated vertically, side by side. I’m about to build a box around them for post curing having done my flight controls in my refrigerator panelled camping van. My question is, does anyone fear for my spars with half of each wings load on them 90 degrees from their loaded orientation when on the fuse? Thanks for opinions.
Regards
Tony Renshaw
Sydney Aussie.
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kjburns(at)btinternet.com
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| Posted: Wed Jun 10, 2020 8:08 am Post subject: Post curing wings with weight on spar when layed flat. |
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Tony ,
Yes there is most definitely risk .
Support to avoid localised pressure and deformation.
Know the post hardening schedule for the curing of resin used.
Defer to Europa max temperature prescribed by them .. do not go higher or factory made sections are risked.
Ramp up ramp down hold at prescribed temperature/ time.
Thermostatically control your oven ...test run it empty before risking parts.
Flight control surfaces have specific twist that must be supported and shape maintained .
Parts may be very close to plastic during the process ...a data logger will show deviation.. I’m sure fish tank alarm or similar alert is not beyond you.
Search on your resin supplier for ramp rates ..heinkel ?
Kevin .
Sent from my iPad
| Quote: | On 9 Jun 2020, at 07:53, Tony Renshaw <tonyrenshaw268(at)gmail.com> wrote:
Gidday,
I have a jig that supports my spars at 200 mm (8”) from the closeout, and a rotisserie fitting in the wingtips, orientated vertically, side by side. I’m about to build a box around them for post curing having done my flight controls in my refrigerator panelled camping van. My question is, does anyone fear for my spars with half of each wings load on them 90 degrees from their loaded orientation when on the fuse? Thanks for opinions.
Regards
Tony Renshaw
Sydney Aussie.
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| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Europa-List |
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