Activity

Wow!What a great presentation! That is an easy way to see all of the steps. Fantastic job for doing that Greg!

Larry and Ken:Thanks for hosting and teaching this class. Since I know nothing I learned lots!!!I’ve put together some notes from the class. Please take a look here and let me know if I need to update anything.http://prezi.com/emqaz3ay60mu/ncruniversity-vacuum-bagging-class/Once there, Click…   Read more»

yep!The vacuum demo was really an eye-opener. Ken showed the right way to do that and the input from others was helpful.I agree, other classes focused on aspects of construction would be quite appreciated by those of us who are…   Read more»

I trust everybody learned something and it was fun. Ken’s really patient. It would be good if small groups of 5 – 12 people could get together to do classes on various points of interest. If anyone wants to put…   Read more»

Larry and Ken,Thanks for hosting the great vac bagging session. It was very informative, and the CF layup on my Kestral turned out great. Nice to see that we had a good turnout, with some guys pretty new to the…   Read more»

Maybe you should check your e-mail.

I’ve offered and taught this class for years. Best turn-out was 3 guys – and that with my wife’s cooking involved no less. (She catered the last 4 annual meetings)I wish you success with the class and would be happy…   Read more»

Maybe you should send a sample to BlendTec and ask them to see if it will blend.Edward

My complaints Adrian were all purely cosmetic. I wanted to make tubing that looked as good or better than the PF tubing I’ve mostly been using since. All I ever have to do with that is wet sand down to…   Read more»

I’ve had a lot of flaws in my scratch tubing too, but they’ve been mostly cosmetic. I’m making my own tubes for 2 reasons: I like using mostly axial unidirectional fibers for more efficient tube bending strength, 2. For my…   Read more»

Good to see you Doug. Hope you’re doing well and look forward to having you fly with us again, preferably with me around to see it.Yes, MD does mean minimum diameter.I did move over to stationary v-bagging, but to be…   Read more»

It worked great until I got into vacuum bagging and the whole rotisserie idea went out the window. It wasn’t possible to build a vacuum-tight oven box and there was no way to deal with the twisting of the vacuum…   Read more»

Warren,Are you saying that JB Weld is more appropriate on the fin root (fin-to-motor mount) than just regular old epoxy that I get at the hardware store?and what does “MD” mean in regards to your post?thanks,

I did a multitude of experiments with a curing oven back in the early 2000’s when I was trying to make decent tubing on my own. The oven was basically 2″ Polyisocyanurate foil faced foam with a sort of rotisserie…   Read more»

Found it on Amazon. It came from a soldering company called Isotip I think. Less than $20. This limits me to single temp range use but was cheap to get things going. Dave Triano over at Shadow Aero is selling…   Read more»

Mine will be similar, at 18″x18″x6′. I’m concerned about not having enough convection for mine, too. You may want to do an experiment with the thermometer at different places. Where did you get your temp switch?If your epoxy isn’t crumbly…   Read more»

I have 3 75W light bulbs for a heat source that are turned on and off via a temp switch. I then have small 3 inch muffin fan that runs off 120V AC that is on all the time. The…   Read more»

What are you using for a heat source, and do you have a fan in your oven? I’m building an oven now, myself, and I’m working on rigging up an external motor that turns an internal fan blade.

Thanks. I actually cured this first tube at about 200F. I used an on / off temp switch that turned the heat off at about 200 and back on again at 185 so it would sit and cycle in this…   Read more»

You should cure Aeropoxy at a temperature that is close to the service temperature you’re planning to use, if you want it to have full strength when it’s hot. I have post-cured Aeropoxy to 225 in my kitchen oven for…   Read more»