Replies to This Discussion

Permalink Reply by Matt Archer on December 10, 2009 at 12:09pm

I agree. I like the way the aircraft responds. Frankly, I would prefer a little lighter roll response. I am glad it does not fly like a 172.

Permalink Reply by Matt Archer on December 10, 2009 at 12:41pm

Exactly, I have looked at Andy's spade mod. I had considered something like this also. But I am used to it and may just do the mod as designed.

Cheers

Permalink Reply by Matt Heintz on December 11, 2009 at 5:58am

Doug, Matt & Roger,
We do have a spring type system which adds about 10 lbs to the elevator forces. However, we need to test it more before making it an option.

Also, by significantly strengthening the airframe (with the upgrade kit), the aircraft is less fragile. We also hope that as part of the upgrade, all aircraft ASI's will be properly calibrated and marked, making sure that the limitations are not exceeded etc.

Permalink Reply by Matt Heintz on December 11, 2009 at 5:48am

Doug,
We do have a spring type system that adds about 10 lbs to the stick force. However, we want to do more testing before releasing anything.

Also, by significantly strengthening the airframe with the upgrade kit, the aircraft is less fragile to abrupt maneuvers.

Permalink Reply by Dale Medendorp on December 11, 2009 at 1:47pm

On 6-ZU-4, the locations for the L angle skin stiffeners are specified at 370 for the top skin and 350 for the bottom skins. However, in the CH650 plans, they are located at 425 for the top skin only. Why were they moved and is the location critical? I'd rather not have another set of rivet holes in the top of the wing!

Permalink Reply by Matt Heintz on December 14, 2009 at 10:55pm

Dale,
There is no reason why they were moved. If you already have the "L" angles installed as per the 650 drawings, that is perfectly fine.

Permalink Reply by Jerold Ebke on December 12, 2009 at 9:15pm

Mathieu, Will upgrade kits for 650 be coming out at same time as 601 kits? Is the only part differance the skin doubler above the wing spar opening? If they are not coming out at this time, when would you expect them to be available? Thank you , Jerry

Permalink Reply by Matt Heintz on December 14, 2009 at 10:59pm

Jerold,
I believe that you can use all the upgrade parts of the 601 on the 650. Yes, there are a few very small differences, such as the 6-ZU-3-3 or the location of the top skin "L" angles. So if you have a 650, order the 601 upgrade kit.

Permalink Reply by Stephen C. Martin on December 13, 2009 at 1:09pm

Is it necessary to lift the fuselage off the gear to do the upgrades? The photos and videos seem to show that the Front Seat Panels, 6B15-4, have been removed. However, the rear row of rivets for these is set from inside the gear channel, so I don't see how you get at them without raising the fuselage off the gear. By removing the L-angles from the Seat Panels, and also by removing the Gear Uprights, 6B11-3, it might be possible to bend the Seat Panels up far enough to install the new side doublers, 6ZU-3-2, and the 6ZU-3-4 angles under the Seat Panels, but I'm not sure this would be considered an "approved" procedure. Please advise.

Regards: Stephen Martin N601RS s/no 65347

Permalink Reply by Matt Archer on December 13, 2009 at 4:41pm

I am in the same boat. I installed these rivets from the bottom also. Not sure yet but I was thinking I could bow them back sufficiently to do the mod. We will have to see. Does anyone have any good ideas?

Permalink Reply by Matt Heintz on December 14, 2009 at 11:03pm

Stephen,
If you can bend the seat panels enough, that is acceptable so long as you are not damaging someone by the bending.

What may work for one may not work for another, so Zenith is doing the upgrade one way, where you can do it another. We all need to use common sense when doing this.

Permalink Reply by Stephen C. Martin on December 15, 2009 at 3:11pm

So I think you are saying that Zenith did take the demo aircraft off the gear to remove the seat panels, right?

Steve Martin N601RS 65347

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