Today's Message Index:
----------------------
1. 11:42 AM - wing attachment (KARL POLIFKA)
2. 03:24 PM - Re: Re: GVT? (Larry Hursh)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
We have 220 hours on our 601XL and check the wing attachment fittings about
every hundred hours -- although a bit tardy this time. A partner recently
noticed that there was just a bit of fore-and-aft give on the left wing.
The main spar attach bolts on both wings checked good. However, the left r
ear attach bolt required somewhere between one and two turns to tighten fir
mly -- about one turn on the right wing.
I would strongly suggest checking spar attachment at least every 100 yours,
particularly the rear attachment point. I am not an engineer but suspect
that slight fore-and-aft movement while flying could very well lead to a ca
tastrophic wing failure starting at the trailing edge. Sound familiar?
Karl
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
As I understand it, the wings on the 650 are mounted differently from
the 601. I think the incidence angle is different or some such change.
Paul
XL grounded
Paul and group,
I originally ordered the CH601XL fuselage kit but then upgraded to the CH650.
I already had the wing center section where the wings attach inside the fuselage.
There is no change where the wings attach to this center section. Yes, the
angle of that center section HAS been changed from 9 degrees to 7 degrees (forward).
The one major change I can see is the REAR attachment plate. The design has changed
but the major thing is the thickness. The older style rear attachment plate
was about .065 thick. It is now .120 or about double the thickness. I was
told it was increased because the "design was changed in order to allow the
plate be be placed lower towards the bottom of the fuselage" (due to the angle
being changed at the front of the wing).
I NOT an Engineer and I can only (wildly) speculate if this change in thickness
was for some other reason. I will NOT state my opinion and let everyone else
decide for themselves on this one, but I DO have my suspicions.
Blue skies to all,
Larry Hursh
skyridersbn@yahoo.com
Edwardsburg, Michigan
Zenith CH650 (N650LM Reserved) Working on fuselage now
Will be Corvair Powered
Crankshaft already ground .010 - .010 Balanced and nitrited at Moldex
I hope to someday be that person my dog thinks I am.....
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|