Today's Message Index:
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1. 06:39 AM - weight amd balance (Bill Flick)
2. 05:35 PM - Re: weight amd balance (Wingrider)
3. 09:26 PM - Upgrades or lack there of! (Afterfxllc@aol.com)
4. 10:08 PM - Re: Upgrades or lack there of! (Afterfxllc@aol.com)
5. 11:15 PM - Re: Re: Upgrades or lack there of! (Peter Chapman)
Message 1
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| Subject: | weight amd balance |
hello anyone useing header tank in 601 hds with corvair engine? i have
wing tanks and also a header tank but wonder if the corvair eng and
header tank will make it hard to get wt and bal without adding wt or
something. any comments appreciated. thanks ralph
Message 2
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| Subject: | Re: weight amd balance |
I have an HDS with the Zenith 10 gal wing tanks an 8 gal header tank and Corvair
engine. No problem staying within the CG envelope. The forward CG is slightly
below the minimum when calculated with a 170# pilot but I don't weigh 170. My
battery is mounted on the firewall but at some point I will probably move it
behind the passenger seat which will improve the W&B.
I read where someone stated the HDS glides like a well thrown man hole cover and
after 20 hours phase 1 time I have to agree.
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Rich Whittington
Tullahoma, TN
Zenith 601HDS Under Construction
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=322892#322892
Message 3
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| Subject: | Upgrades or lack there of! |
As many of you know I have been doing upgrades for the past year and have
lost count at this point. But what is the point of doing the upgrade
yourself if you are not skilled enough to do it?
After what I have seen between the aircraft that were brought in to the
shop before the upgrade and one that was brought in after the upgrade I
would venture to say the later would have been safer without the upgrade.
I will be posting photos each day with a caption of what is wrong and how
to spot it for buyers of a flying upgraded 601 XL-B.
These photos aren't being posted to embarrass anyone but to merely show
what could be the next wave of aircraft that should be safer only to be
worse off with the upgrade being installed incorrectly.
The first photo is of the rivets that were bucked incorrectly and will need
to be replaced. Not only were they done incorrectly but some of the old
rivets are still in the holes that were drilled wrong.
Some of these rivet heads have a gap between them and the aluminum.
Message 4
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| Subject: | Re: Upgrades or lack there of! |
Here is a link to all the photos...
http://www.facebook.com/album.php?aid=39343&id=100000256688371&l=3ecaba3433
They are on face book so you will need a face book profile I think. I would
post them to Zenith Aero but it takes too long.
Jeff
In a message dated 12/11/2010 12:22:04 A.M. Eastern Standard Time,
Afterfxllc@aol.com writes:
As many of you know I have been doing upgrades for the past year and have
lost count at this point. But what is the point of doing the upgrade
yourself if you are not skilled enough to do it?
After what I have seen between the aircraft that were brought in to the
shop before the upgrade and one that was brought in after the upgrade I
would venture to say the later would have been safer without the upgrade.
I will be posting photos each day with a caption of what is wrong and how
to spot it for buyers of a flying upgraded 601 XL-B.
These photos aren't being posted to embarrass anyone but to merely show
what could be the next wave of aircraft that should be safer only to be
worse off with the upgrade being installed incorrectly.
The first photo is of the rivets that were bucked incorrectly and will
need to be replaced. Not only were they done incorrectly but some of the old
rivets are still in the holes that were drilled wrong.
Some of these rivet heads have a gap between them and the aluminum.
Message 5
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| Subject: | Re: Upgrades or lack there of! |
At 01:05 11-12-10, you wrote:
>Here is a link to all the photos...
>http://www.facebook.com/album.php?aid=39343&id=100000256688371&l=3ecaba3433
Quite the variety of issues there.
I particularly like the control system nicopress with just 1 crimp mark on it.
Even in today's economy, that's not the way to cut back.
There are parts misaligned, rivets of the wrong length, holes in the
wrong places, jaggedly cut pieces, rivets missing, even rivets half
way out the edge of some new reinforcement piece. Also all those
dings in the spar cap angles.
Even for those errors that really don't make much significant
difference in strength or fatigue life, it looks sloppy.
Some issues are a bit subtle though, if one doesn't know the 601 XL
mods well. (Like me.) If you got around to it some time, a few brief
comments added to the photos would help the less experienced
understand those kinds of photos better.
Good stuff to learn from in any case.
Peter Chapman
Toronto, ON 601 HDS / 912 / C-GZDC
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