KR> New wing skin idea

2014-02-14 Thread Dene
Hi Sid I hear you but I have not done my final calcs yet, I might not make the tanks the full span between the spars but I would like to keep them full span for the stiffness it will give the wing being bonded to both the top and bottom skins. Regards Dene Collett Avlec Projects cc Builders of awa

KR> New wing skin idea

2014-02-14 Thread Larry&Sallie Flesner
At 01:41 PM 2/14/2014, you wrote: >I might not make the >tanks the full span between the spars but I would like to keep them full >span for the stiffness it will give the wing being bonded to both the top >and bottom skins. >Dene Collett + A

KR> New wing skin idea

2014-02-14 Thread peter
Dene; Make sure that the airloads don't travel through the full-span box structure of the tanks, rather than through the box structure of the spars. Probably would delaminate from the skins over time. Thermal loads also concern me. Wood, aluminum, and fibreglass expand differentially with heati

KR> New wing skin idea

2014-02-14 Thread Dene
Hi Wayne I appreciate your good advice and wisdom, however, I have experience with polystyrene foam in a KR wing being dissolved in flight and it is not good for the heart! I personally know a cozy builder that has had his tank spring a leak and had to replace a lot of foam in the wing, a very deli

KR> New wing skin idea

2014-02-14 Thread smwood
I built in wing tanks per the Diehl plans between the forward and aft spars, and from the WAF out to the first wing rib. Turned out to be 10.8 gallons per side. That 21.6 gallons would provide over 6 hours endurance plus reserve. Way longer than I care to sit in my tiny cockpit for one flight

KR> New wing skin idea

2014-02-14 Thread Wayne Tokarz
Awesome! Cheater! You have access to a CNC hot wire cutter! LOL. Very cool, I did mine the old fashioned way, it was OK but yours are far superior. The coremat is an excellent choice. I think you may be on the right track. Wayne -Original Message- From: KRnet [mailto:krnet-bounces at list

KR> New wing skin idea

2014-02-14 Thread Wayne Tokarz
Just remembered this one, did it years ago on a special project. Use any core you wish for front and back half of wing, and last a foam in the center area. Cover the spars with a releasable covering, (please don't laugh, but duct tape works really well for this!), lay up the whole wing as per nor

KR> New wing skin idea

2014-02-14 Thread Dene
Jamie I am in South Africa which puts Diel skins out of my reach and as far as I know, Diel skins are only available in RAF48 airfoil shape. My wings are a combo from AS5048 at the root to AS5045 at the tip. Honestly compared to the conventional method of sanding the foam to shape, I think this is

KR> New wing skin idea

2014-02-14 Thread Wayne Tokarz
I think you will be compromising the torsional rigidity of the wings with three pieces and relying on a bonded joint, ( I could be wrong here). There are lots of fuel resistant core materials available with which to do this. Would it not be faster, cheaper and easier, (consideration given to your l

KR> New wing skin idea

2014-02-14 Thread Dene
Hi guys It is my plan to put full length wing tanks inside my wings between the spars but because it is common practice here to use polystyrene for a core and we all know what happens to poly foam when it even smells fuel, I have been trying to come up with a way to get rid of foam all together wit

KR> New wing skin idea

2014-02-14 Thread James Duff
Hi, Sounds like a lot of work to get to the same end result as Diehl skins? Regards, Jamie Sent from Samsung Mobile Original message From: Dene List-Post: krnet@list.krnet.org Date:14/02/2014 05:48 (GMT+00:00) To: 'KRnet' Subject: KR> New wing skin idea Hi guys It i