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Re: Q1 Fuselage comes up

Working from memory, the heat-up rates that I saw recommended for postcuring epoxy were way lower, like 3°C/h. Probably this was for free-standing products; in mold postcuring can be done more

By Rob de Bie · #51796 ·

Re: Q1 Fuselage comes up

Dear Q-Community, thanks for your hints and comments. Again, great to get that feedback from you guys! To post cure the Resin that I use for the Q1 Project (MGS LR385/LH386) it’s already a oven

By Eugen Pilarski · #51795 ·

Re: Q1 Fuselage comes up

Looks extremely nice, Eugen. The glass is fine at a 45 degree bias to a 45 degree change in contour, especially vacuum bagged. You will have the lightest and strongest Quickie ever made. My 2 cents.

By John Hoxie · #51794 ·

Re: Q1 Fuselage comes up

If your airplane gets above 150 F you will have other problems. 150 F cooks flesh. We post cure in aerospace because the designers cut the margins thin knowing we had proper process control. No mold

By One Sky Dog · #51793 ·

Re: Q1 Fuselage comes up

I see your point, but as far as I know this does not apply to the glass-transition temperature. Rob

By Rob de Bie · #51792 ·

Re: Q1 Fuselage comes up

Good question. I have been told that postcuring can be done a long time after room temperature cure. But I have never found confirmation of that in a book or paper. If I had all the time in the world,

By Rob de Bie · #51791 ·

Re: Q1 Fuselage comes up

Ah, yea, that's what I thought. Glad I have you guys with all that knowledge and the ability to also simplify it for me Thanks again for the help!

By Mike Steinsland · #51790 ·

Re: Resin volume placed on foam

a mockup http://www.collectspace.com/news/news-082120a-space-shuttle-pathfinder-save-americas-treasures-grant.html

By boss.arsik007 · #51789 ·

GU Q-2 Project available in Southern California

Yep. I have one and hangar inspection is coming up. I have a trailer capable of relocating locally. PM me if interested. Phil Lankford.

By britmcman99 · #51788 ·

Re: Q1 Fuselage comes up

Hi Mike, I did not post cure my wing and canard layups, but I did build them in West Texas in the hot part of the year, and I have photos of my shop thermometer well over 100 F right after

By Jay Scheevel · #51787 ·

Re: Q1 Fuselage comes up

Styrofoam softens at 284 F Heat deflection temperature (HDT)and melts at 420-450 F Post curing epoxy can raise the HDT but if it was built with Safe-T-Poxy (dark brown color) it is already at 150 F.

By One Sky Dog · #51786 ·

Re: Q1 Fuselage comes up

Just a question while you're on the topic. I have a project that was started by someone else 30 years ago. I have no way of knowing if the canard and wing were post cured....judging from the builders

By Mike Steinsland · #51785 ·

Re: Q1 Fuselage comes up

The foam used by both other Rutan designs are acceptable. Be cautious of too high temperature for "post cure". 65C= 149F A bit of investigation is in order to assure foam damage will not result.

By Frankenbird Vern · #51784 ·

Re: Q1 Fuselage comes up

Eugen, I think it's great that you will postcure your epoxy. I would do the same, since room temperature cured epoxy has a way too low glass transition temperature (Tg). Also, generally speaking,

By Rob de Bie · #51783 ·

Re: Q1 Fuselage comes up

Hi there, hi Eugen, I worked on German Certified Aircrafts and there we used a special resin for the Fuel Tank, it's not very great for laminating but it's the best resin for chemical/fuel resistants.

By Niklas Bostelmann · #51782 ·

Re: Q1 Fuselage comes up

David, thank you very much vor your email and the valuable information. Please find in the attachment a cross section view from the fuselage that show which angle I choice for conturing. The angle in

By Eugen Pilarski · #51781 ·

Re: Q1 Fuselage comes up

Eugen, It appears that you machined a 45 degree bevel on the inside contouring of your fuselage sides and bottom. The section A-A you refer to shows a much more shallow bevel. You MAY encounter

By David J. Gall · #51780 ·

Re: Q1 Fuselage comes up

Tony.. I am building a Frankenbird (2 seat tandem) but if you've seen the video on the racing team with the Vanguard it seems your search would be pretty easy to fulfill. You'd have one of your birds

By Frankenbird Vern · #51779 ·

Re: Q1 Fuselage comes up

Guys, Please keep us up to date on these developments!! I have two Q-1s I would like to install updated engines on. It initially planned for two strokes however if there is a modern four stroke

By Tony Warnock · #51778 ·

Jay Scheevel's Tri-Q Q-Tour, Saturday April 10, 0900 Central Savings time, 1400 GMT

From Grand Junction, Colorado, join Jay as we tour his highly modified Jabiru 3300 powered Tri-Q. This is a really unique aircraft and can't be missed. Jay may be holding the record for the longest

By Sam Hoskins · #51777 ·

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