Today's Message Index:
----------------------
1. 06:18 AM - Re: Aeleron tips (Christian Tremblay)
2. 07:01 AM - Re: Aeleron tips (Christian Tremblay)
3. 07:17 AM - Re: Aeleron tips (pilot4pay)
Message 1
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I Craig
Second email,
First, after wings tip assembly done, (my special conception) with a metal
wing tip, I understand ailerons where not sufficiently long anyway. I added
a small extention piece and fix the aileron tip on it.
I also do some minors adjustments on mesurement for the paper tip stencil
to reflect minors differences on my aileron assembly. I think the zenith
mesurements are not very accurate for any assembly.
All that finishing job must be done when the aileron is assembly is fix on
the wing with clecos and the wing tip itself installed. Sure, It's an artist
job of trimming and assembly, but alum metal is a good an easy rework
material.
Good luck Craig.
See photos.
Notes to buiders: my own project wings, tail wings, rudder and center web
spars are for sale . Asks for photos.
Christian
-----Original Message-----
From: owner-zenith640-list-server@matronics.com
[mailto:owner-zenith640-list-server@matronics.com] On Behalf Of pilot4pay
Sent: Saturday, June 25, 2011 18:57
Subject: Zenith640-List: Aeleron tips
<pilot4profit@sbcglobal.net>
Does anyone have any tips on the aileron tips?
The skins come bent pretty tight, I followed the new pictorial assembly
guidance. When I got to trimming for the outboard tips, the dimensions in
the drawing (640-a-1) just didn't make sense. The rib 4 rivet line is 195mm
inboard of the untrimmed edge, the detail says add 15 mm to the rivet line
and start the cut, which should be no more than 135mm from out board edge.
135+15 is 150mm, not 195.
Anyway, cutting in 135mm would have you cutting into the hinge. So I made a
conservative add of 15mm from the end of the hinge, then drew straight lines
to the corner of the bottom trailing edgeand to a point 40mm back from the
top bend. that is someting on the order of 120mm cut back.
Started to try to fit the aileron tip cap on and it just isn't going to fit.
Cutting deeper would make the problem worse.
Did anyone have any trouble figuring out how to trim the tip, or did you
trim it to match the finished wing?
--------
Craig Smith
CH640 builder
SN: 0078
"Just think how stupid the average person is,
and then realize that half of them are even stupider!"
--George Carlin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=344095#344095
Message 2
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I Craig,
First email,
Yes, there are 3 photos about the tips. This is not a simple task, intall
and trim the tip for fitting.
I started from mesurement from plan and made some adjustment.
Check next photos for assembly
Christ
-----Original Message-----
From: owner-zenith640-list-server@matronics.com
[mailto:owner-zenith640-list-server@matronics.com] On Behalf Of pilot4pay
Sent: Saturday, June 25, 2011 18:57
Subject: Zenith640-List: Aeleron tips
<pilot4profit@sbcglobal.net>
Does anyone have any tips on the aileron tips?
The skins come bent pretty tight, I followed the new pictorial assembly
guidance. When I got to trimming for the outboard tips, the dimensions in
the drawing (640-a-1) just didn't make sense. The rib 4 rivet line is 195mm
inboard of the untrimmed edge, the detail says add 15 mm to the rivet line
and start the cut, which should be no more than 135mm from out board edge.
135+15 is 150mm, not 195.
Anyway, cutting in 135mm would have you cutting into the hinge. So I made a
conservative add of 15mm from the end of the hinge, then drew straight lines
to the corner of the bottom trailing edgeand to a point 40mm back from the
top bend. that is someting on the order of 120mm cut back.
Started to try to fit the aileron tip cap on and it just isn't going to fit.
Cutting deeper would make the problem worse.
Did anyone have any trouble figuring out how to trim the tip, or did you
trim it to match the finished wing?
--------
Craig Smith
CH640 builder
SN: 0078
"Just think how stupid the average person is,
and then realize that half of them are even stupider!"
--George Carlin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=344095#344095
Message 3
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| Subject: | Re: Aeleron tips |
Thanks for the information Chris. I figured there was something more to this. The
tip blank supplied by Zenair appears to be for the AMD-2000. I don't know how
different the ailerons are from the 2 models, but the blank looks nothing like
the one in the plans or the one you made.
Will be setting aileron subassemblies on the shelf until the wings are finished.
Will very likely have to make new tips anyway. They are easy parts anyway.
Thanks again.
--------
Craig Smith
CH640 builder
SN: 0078
"Just think how stupid the average person is,
and then realize that half of them are even stupider!"
--George Carlin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=344127#344127
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