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zenith-list(at)steensland
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 Posted: Mon Nov 29, 2010 9:39 am Post subject: Am I missing something? |
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Folks,
I would like to consider myself a conscientious builder. I read have
read through the drawings very thoroughly, and followed up with the step
by step assembly guides. I have even go as far as to buy the
homebuilthelp.com videos. The info between the assembly drawings and the
drawings and the "kit" I have seem to be pretty disparate.
Here is an example:
My construction and assembly drawings show a stop plate that goes on the
top of the of the nose gear to keep it from going through the firewall
stiffener. I looked through every packing list I have and it is no where
to be found. Come to find out Zenith lengthened the nose gear tube so
that you no longer need the stop plate. What I want to know is where is
that "upgrade" captured? I looked on the builder update site, and I
can't find it mentioned there; which should be to go-to place for things
like that.
Here is another example:
The assembly guide spends a few pages talking about building a wing jig
to distance the center wing spar with the rear wing spar in the
fuselage. I looked through all the stuff I have and I don't have the
spar stubs or the 6061 sheet to make the wing spar jig. I do have
pre-drilled holes in my fuselage for the center spar, however. So it
occurs to me that I don't actually need that jig.
Mind you, I'm not trying to bash Zenith (well maybe just a little) but I
am just trying to build the best plane I can, and I go around feeling
like I out of the loop on a few things that seem kinda vital to my
success as a builder.
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psm(at)att.net
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| Posted: Mon Nov 29, 2010 10:40 am Post subject: Am I missing something? |
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Hi Lee,
I think you are starting to get the idea of how a builder must relate to the design sold by Zenith. I know I have an attitude problem over this issue, but I have completed building my XL. As you progress you may improve your attitude or it might approach the dark place where my attitude lies.
You should remember that this is not a Revel plastic airplane kit where you fit the pieces together, paint your model plane and hang it on your ceiling. This activity requires you to think through each step and eventually build "Your" plane rather than trying to build "Their" design. You are the manufacturer, and Zenith merely supplies parts and drawings which you may choose to use in your building process.
Zenith has no revision control over their designs. That means they make changes whenever they feel like it and the design one builder receives might be different from they one he would have received if he ordered it one day earlier or one day later. To make matters worse, you have no way of knowing who made the latest design changes. Instead of following the industry practice of having each engineer put his name and date of any change on each sheet of drawing they merely have Chris Heintz's name on all pages. You can be sure he didn't do the latest changes since he retired to France years ago.
On the bright side, if you install the upgrade published with the November FAA SAIB you can have confidence that the engineering of the finished design meets the ASTM requirements. This is more than you will ever get on another plans or kit built plane.
You are free to consult with Zenith support people and email list members as well as anybody else you can find when you feel you need it. Still, your plane is your design and workmanship. You are the manufacturer.
Good luck,
Paul
XL installing upgrade
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JohnDRead(at)aol.com
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| Posted: Mon Nov 29, 2010 2:03 pm Post subject: Am I missing something? |
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Hi Lee,
I see you are having some difficulty rationalizing the kit parts and the drawings. I suggest that a phone call to the factory will clarify things for you. Both the guys in the shop and the ladies of Zenith are very helpful. If you have the opportunity to attend one of the rudder building sessions it is well worth it. The zenith.aero list is very helpful too and a lot more helpful than some of the folk on other lists. Unfortunately there are many people on this list who have tried, unsuccessfully, to bring Zenith to its knees. Buy a copy of Chris Heintz book "Flying on Your Own Wings" and you will understand his philosophy of design. He is neither a new comer or a beginner in this area. Do not archive.
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
In a message dated 11/29/2010 10:40:18 A.M. Mountain Standard Time, zenith-list(at)steensland.net writes:
| Quote: | --> Zenith601-List message posted by: Lee Steensland <zenith-list(at)steensland.net>
Folks,
I would like to consider myself a conscientious builder. I read have
read through the drawings very thoroughly, and followed up with the step
by step assembly guides. I have even go as far as to buy the
homebuilthelp.com videos. The info between the assembly drawings and the
drawings and the "kit" I have seem to be pretty disparate.
Here is an example:
My construction and assembly drawings show a stop plate that goes on the
top of the of the nose gear to keep it from going through the firewall
stiffener. I looked through every packing list I have and it is no where
to be found. Come to find out Zenith lengthened the nose gear tube so
that you no longer need the stop plate. What I want to know is where is
that "upgrade" captured? I looked on the builder update site, and I
can't find it mentioned there; which should be to go-to place for things
like that.
Here is another example:
The assembly guide spends a few pages talking about building a wing jig
to distance the center wing spar with the rear wing spar in the
fuselage. I looked through all the stuff I have and I don't have the
spar stubs or the 6061 sheet to make the wing spar jig. I do have
pre-drilled holes in my fuselage for the center spar, however. So it
occurs to me that I don't actually need that jig.
Mind you, I'm not trying to bash Zenith (well maybe just a little) but I
am just trying to build the best plane I can, and I go around feeling
like I out of the loop on a few things that seem kinda vital to my
success as a ========================-= nbsp; (And Get Some AWESOME FREE to find Gifts ilder's ELP b k you for p; -Matt Dralle, List ======================== Use the ties Day ================================================ - MATRONICS WEB FORUMS ==================================================
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| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Ron Lendon
Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI
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| Posted: Mon Nov 29, 2010 6:58 pm Post subject: Re: Am I missing something? |
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Zenith does publish updates and they are located in the builders area of the web site under (Model name) DRAWINGS Updates.
There are a total of ten files listed there and none of them are cumulative. Each file represents the changes since the last change. So you will have to open each file and search for 6-G-1 to see what has evolved over time.
I just did that but didn't notice anything about the length of the gear changing but I did notice the note about not needing the 4130 PLATE with the nuts on the top of the nose gear leg.
The overall length on my print is 795mm. What does your 6-g-1-1 measure?
| | - The Matronics Zenith601-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Zenith601-List |
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_________________
Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
https://sites.google.com/site/corvairenginedata/ |
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afterfxllc(at)aol.com
Guest
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| Posted: Mon Nov 29, 2010 8:51 pm Post subject: Am I missing something? |
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There is a very easy way to tell if your part has been revised or changed since the drawings you have that might be outdated.
If you look at any part in the drawings they have a part # and that part # should match the tag or sticker on the part you have a question about. If the part # has a revision it will be something like 6-G-1-1/2 That translated means 6 = 601, G = Gear, 1 = Page #, 1 = drawing # on page, and most important is the next # which means 2 revision's.
Now if you have say 6-G-1-1/3 that would mean the part has been revised 3 times but the plans might not have caught up yet but your tag will indicate a revision. If you have any questions about a revision Shirley at Zenith can most times let you know what was changed.
Hope this helped
Jeff
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