 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
pdelano(at)telus.net
Guest
|
 Posted: Fri Sep 27, 2013 3:56 pm Post subject: Twist Avoidance |
 |
|
The 12’ X 2.5’ work bench I use to build on is a very stiff structure on casters. It has some twist in it that would be a big job to take out if not impossible. In the past I have jacked the table then shimmed 2x2 Aluminum tubing laid perpendicular the long axis of the table to have level supports on which to build. The latter is a cumbersome procedure and is exaggerated by a sloping garage floor. I did weld up some screw jack levelers for the table that hold it steady and get it near level but I still need to address the twist. I have flipped the R wing, right side up and want to drill and cleco the nose skin and leading edge of the upper rear skin to the spar but I want to ensure the 2x2’s are level in the X and Y before starting.
I fear a 4 foot level is not accurate enough as I would have to either attach it to a longer “straight beam” or level in increments along the length of the table. I have thought about buying or renting one of those self leveling lasers, using an optical level and even a piece of clear tube filled with water or some other fluid. I may be over thinking this for a CH-701, so I wanted to see what others have done to ensure they are building on a level surface.
Regards,
Perry Delano
[quote][b]
| | - The Matronics Zenith701801-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?Zenith701801-List |
|
|
|
| Back to top |
|
 |
dougsnash
Joined: 14 Apr 2008
Posts: 281
|
| Posted: Fri Sep 27, 2013 6:16 pm Post subject: Twist Avoidance |
|
|
I don't know what to tell you Perry other than the flatter and truer the work surface, the better the final product will be. I would to my best to eliminate the twist as much as possible. Now, are we talking a millimeter or two or are we talking 10-20mm. If the former is what you have, your good to go. If its the latter, you need to get the bench straightened out. Remember to check your construction standards on the Manual CD, it generally tells you the limits for how accurate things need to be.
Hope this helps
Doug M
From: Perry Delano <pdelano(at)telus.net>
To: zenith701801-list(at)matronics.com
Sent: Friday, September 27, 2013 6:55:50 PM
Subject: Twist Avoidance
The 12’ X 2.5’ work bench I use to build on is a very stiff structure on casters. It has some twist in it that would be a big job to take out if not impossible. In the past I have jacked the table then shimmed 2x2 Aluminum tubing laid perpendicular the long axis of the table to have level supports on which to build. The latter is a cumbersome procedure and is exaggerated by a sloping garage floor. I did weld up some screw jack levelers for the table that hold it steady and get it near level but I still need to address the twist. I have flipped the R wing, right side up and want to drill and cleco the nose skin and leading edge of the upper rear skin to the spar but I want to ensure the 2x2’s are level in the X and Y before starting.
I fear a 4 foot level is not accurate enough as I would have to either attach it to a longer “straight beam” or level in increments along the length of the table. I have thought about buying or renting one of those self leveling lasers, using an optical level and even a piece of clear tube filled with water or some other fluid. I may be over thinking this for a CH-701, so I wanted to see what others have done to ensure they are building on a level surface.
Regards,
Perry Delano
[quote]http://www.matronics.cottp://forums.matronics.com/" target="_blank" rel="nofollow">http://foru==========
[b]
| | - The Matronics Zenith701801-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?Zenith701801-List |
|
|
|
| Back to top |
|
|
JohnDRead(at)aol.com
Guest
|
| Posted: Fri Sep 27, 2013 6:19 pm Post subject: Twist Avoidance |
|
|
Perry,
The more flat your building table is the less problems you will have when you fly your 701. There is some guidance in the Zenith building standards, I recall it was one degree max.
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
In a message dated 9/27/2013 5:56:50 P.M. Mountain Daylight Time, pdelano(at)telus.net writes:
| Quote: |
The 12’ X 2.5’ work bench I use to build on is a very stiff structure on casters. It has some twist in it that would be a big job to take out if not impossible. In the past I have jacked the table then shimmed 2x2 Aluminum tubing laid perpendicular the long axis of the table to have level supports on which to build. The latter is a cumbersome procedure and is exaggerated by a sloping garage floor. I did weld up some screw jack levelers for the table that hold it steady and get it near level but I still need to address the twist. I have flipped the R wing, right side up and want to drill and cleco the nose skin and leading edge of the upper rear skin to the spar but I want to ensure the 2x2’s are level in the X and Y before starting.
I fear a 4 foot level is not accurate enough as I would have to either attach it to a longer “straight beam” or level in increments along the length of the table. I have thought about buying or renting one of those self leveling lasers, using an optical level and even a piece of clear tube filled with water or some other fluid. I may be over thinking this for a CH-701, so I wanted to see what others have done to ensure they are building on a level surface.
Regards,
Perry Delano
|
[quote][b]
| | - The Matronics Zenith701801-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?Zenith701801-List |
|
|
|
| Back to top |
|
|
rwehba(at)yahoo.com
Guest
|
| Posted: Mon Sep 30, 2013 9:20 am Post subject: Twist Avoidance |
|
|
use a homemade water level
Sent from my iPhone
On Sep 27, 2013, at 6:55 PM, "Perry Delano" <pdelano(at)telus.net (pdelano(at)telus.net)> wrote:
[quote] <![endif]--> <![endif]-->
The 12’ X 2.5’ work bench I use to build on is a very stiff structure on casters. It has some twist in it that would be a big job to take out if not impossible. In the past I have jacked the table then shimmed 2x2 Aluminum tubing laid perpendicular the long axis of the table to have level supports on which to build. The latter is a cumbersome procedure and is exaggerated by a sloping garage floor. I did weld up some screw jack levelers for the table that hold it steady and get it near level but I still need to address the twist. I have flipped the R wing, right side up and want to drill and cleco the nose skin and leading edge of the upper rear skin to the spar but I want to ensure the 2x2’s are level in the X and Y before starting.
I fear a 4 foot level is not accurate enough as I would have to either attach it to a longer “straight beam” or level in increments along the length of the table. I have thought about buying or renting one of those self leveling lasers, using an optical level and even a piece of clear tube filled with water or some other fluid. I may be over thinking this for a CH-701, so I wanted to see what others have done to ensure they are building on a level surface.
Regards,
Perry Delano
| Quote: |
===================================
st">http://www.matronics.com/Navigator?Zenith701801-List
===================================
cs.com
===================================
matronics.com/contribution
===================================
|
[b]
| | - The Matronics Zenith701801-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?Zenith701801-List |
|
|
|
| Back to top |
|
|
pdelano(at)telus.net
Guest
|
| Posted: Thu Oct 10, 2013 8:45 pm Post subject: Twist Avoidance |
|
|
Hi Ron, Doug, John, Carlos,
Thanks for the advice on using a level table for wing construction. I took it to heart and basically made my work bench into a pool table, e.g. it now has jack screws at each lag and at every hold down point on the top (9 points on each side)  there is a jack screw to adjust the bed as needed to get it as flat and level as I can. I bought some clear hose to make a water level and will  do a final level check when I have all the jack screws installed. I may rent one of those self leveling laser levels to double check my work, or an optical level if I can find one.
Sorry for taking so long for a reply. Thanks again.
Regards,
Perry
[quote][b]
| | - The Matronics Zenith701801-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?Zenith701801-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
