Replies to This Discussion

Permalink Reply by Matt Heintz on November 18, 2009 at 8:02am

Jerold,
Yes, I see no issues with what you are suggesting. It would be good if you could make up a sketch so that we completely understand the assembly.
Thanks.

Permalink Reply by Matt Heintz on November 18, 2009 at 8:34am

Patrick,
You will have to use the same size A6 rivets as your wing skins still have these holes. With the upgrade, we are recommending that an extra rivet be installed between each rivet on the upper and lower skin rivet lines at the spar. However, with your A6 rivets, you will not have to add rivets between them.

Permalink Reply by Matt Heintz on November 18, 2009 at 8:50am

To all:
Please remember that the drawings are "DRAFT" only at this time and many parts will be updated. So please do not start making parts and riveting things back together etc.

We will have the final drawings shortly.

Since the release of the "DRAFT" drawings, many specialists have shared many different opinions with us, so we are trying to cover every reasonable issue, without completely redesigning the aircraft.

Chris Heintz is still very concerned about "overloading" (exceeding the limitations) so adding an extra 15-20% margin at the wing root fittings may be the right thing to do.

Chris Heintz would like to thank everyone for their patience and support.

Permalink Reply by Matt Heintz on November 18, 2009 at 12:56pm

Dave,
6W7-2 does stay and 6-ZU-1-5 gets riveted on top of it.

Permalink Reply by Mark Ertz on November 18, 2009 at 9:02am

Mathieu,
Can you get the website manager to flip these responses around to read from the top and recent? Now they are newest is last. Thanks, Mark

Permalink Reply by Matt Heintz on November 18, 2009 at 12:49pm

Mark
Looking into this.

Permalink Reply by Alan Uhr on November 18, 2009 at 9:25am

Hi Matt, While the wing is open, what about the idea of adding a .025 sheet of alum to the underside of the top skin at the wing root. Where we stand on the wing. Would this have any detrimental effects. Would it be adding unnessary weight? Alan

Permalink Reply by Greg P Couttie on November 18, 2009 at 12:38pm

I think that would be a good idea ,doubling up in the area that you stand on .I have seen a few XLs that have
the rear rib flange positions "showing through like an X-ray " as the skin creases around them .eg 100kg+ on ONE FOOT pressing BETWEEN the ribs .
Adding an EXTRA small 0.025" piece over these four rear ribs would prevent this .
The Sportscruiser has this done ,and It "very much" looks like it started its life as an XL .
Keep up the good R and D work and this aircraft will be the best !
Best Regards
Greg
p.s This would save me having to carry a sandbag ,to act as a doormat to prevent this "point load "from creasing the skin in this area .:0)

Permalink Reply by Matt Heintz on November 18, 2009 at 12:50pm

Alan,
We added extra thick material for the walkway area of the CH2000 aircraft. Works great but it does add a lot of weight. With all the items we will be adding in the upgrade kit, we must be very careful about how much more we add.

Permalink Reply by Gabriel Kremer on November 18, 2009 at 3:12pm

Alan,
I and many other builders have done this. I used a .040 sheet though to make it beefy. You can go between ribs 2 and 3 or all 4 if you like. not lay the pieces under your skin and back drill them. You may see a small bulge in the skin when you put it down or if you get fancy and use a hole finder you can put the double out the external portion of the wing seen it done both ways.

gabe

Permalink Reply by Tim Juhl on November 18, 2009 at 5:30pm

Mathieu,
When I taught school I always used to be frustrated when my students wouldn't read the directions on a test or assignment. Well... I failed to note that you wanted all new postings to be added at the end of the discussion so I apologize for adding my comment about the wing lockers following another poster's question yesterday. I see that I am not alone in doing this so you may need to read previous pages to see all the questions and comments that have come in.

Thanks!
Tim Juhl

Permalink Reply by Matt Heintz on November 19, 2009 at 9:44am

Good point Tim. I have been going to previous pages to see if people are adding comments but we are starting to have quite a few pages.

• ‹ Previous
• 1
• …
• 10
• 11
• 12
• 13
• 14
• …
• 19
• Next ›
• Page