Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-01-2015, 01:10 PM   #1
Rivet Master
 
drboyd's Avatar

 
1978 25' Tradewind
Metro Phoenix , Arizona
Join Date: Jun 2003
Posts: 1,428
How to find the center-line on the floor?

OK, my new dinette is coming together, but I need to make sure that things are parallel and perpendicular and stuff.

And for that, I need to find the center-line. I need to make a fine Sharpie line right down the middle of the (still bare plywood) floor.

Seems like the exact center of the front window and the exact center of the rear window would be easy-to-find reference points, but there's furniture in front of both of them, and no easy way to transfer that position to the floor.

Does anybody have a quick easy method of laying out a center-line?
__________________

__________________
"Between what matters and what seems to matter, how should the world we know judge wisely?" - E.C. Bentley, Trent's Last Case
drboyd is offline   Reply With Quote
Old 03-01-2015, 01:23 PM   #2
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,189
On some newer model trailers, there is a steel brace running fore-and-aft down the center line. A stud finder would help you locate it.
__________________

__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 03-01-2015, 01:26 PM   #3
Rivet Master
 
drboyd's Avatar

 
1978 25' Tradewind
Metro Phoenix , Arizona
Join Date: Jun 2003
Posts: 1,428
Unfortunately, mine is a 1978. I'll give it a shot, though.

Thanks!
__________________
"Between what matters and what seems to matter, how should the world we know judge wisely?" - E.C. Bentley, Trent's Last Case
drboyd is offline   Reply With Quote
Old 03-01-2015, 01:27 PM   #4
4 Rivet Member
 
thehandyman's Avatar
 
1980 24' Caravelle
corpus christi , Texas
Join Date: Jul 2013
Posts: 263
I would use a string with thumb tacks first. Tack down front and back measure and move as needed to get center.
__________________
thehandyman is offline   Reply With Quote
Old 03-01-2015, 01:29 PM   #5
4 Rivet Member
 
thehandyman's Avatar
 
1980 24' Caravelle
corpus christi , Texas
Join Date: Jul 2013
Posts: 263
Also if your trailer is level side to side find the center of the ceiling then use plumb bob.
__________________
thehandyman is offline   Reply With Quote
Old 03-01-2015, 01:30 PM   #6
Rivet Master
 
drboyd's Avatar

 
1978 25' Tradewind
Metro Phoenix , Arizona
Join Date: Jun 2003
Posts: 1,428
I'm liking the string with thumb tacks. Thanks!

Now I'm stuck on "how do I figure out where to put the string?"
__________________
"Between what matters and what seems to matter, how should the world we know judge wisely?" - E.C. Bentley, Trent's Last Case
drboyd is offline   Reply With Quote
Old 03-01-2015, 01:51 PM   #7
Rivet Master
 
Foiled Again's Avatar
 
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach , Virginia
Join Date: Sep 2004
Posts: 5,883
Plane geometry memory... Pick a point on each side of the trailer - say the front of the wheel wells and with a compass (or string and chalk) draw a semi-circle big enough to cross the center line, then do the same from the front of the other wheel well keeping the length of the string exactly the same. The two points where the semi-circles cross will be directly on the centerline. Use a straight edge and draw the line, extending from front to back.

Of course where that can go wanky is if the side to side points are 1/3 of an inch off.

Paula
__________________
Today is a gift, that's why they call it the present.
Foiled Again is offline   Reply With Quote
Old 03-01-2015, 01:56 PM   #8
Rivet Master

 
2007 22' International CCD
Corona , California
Join Date: Jul 2013
Posts: 3,306
Try a laser level that projects a line up the wall as well as across the floor to find window center.


Sent from my pocket Internet using Airstream Forums
__________________
KE4GNK/AE
'The Silver HamShack' (2007 International 22FB CCD 75th Aniversary model)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch
2012 shortbed crewcab 4x4 Toyota Taco TV with more antennae on it
rmkrum is offline   Reply With Quote
Old 03-01-2015, 05:52 PM   #9
Rivet Master
 
drboyd's Avatar

 
1978 25' Tradewind
Metro Phoenix , Arizona
Join Date: Jun 2003
Posts: 1,428
Well, what I ended up doing was this. I ran a string from the bottom center of the front window to the bottom center of the back window, held on with gorilla tape. This gave me a center line about 3 feet off the floor.

The I used an L square with an extension to transfer that line to the floor. I used a long board crossways to reduce the inaccuracy due to the undeveloped floor. I had a roll of 8" aluminum flashing that made a great straight edge.

Of course, there was my usual amount of fiddling and remeasuring.

Thanks for all the great input!
__________________
"Between what matters and what seems to matter, how should the world we know judge wisely?" - E.C. Bentley, Trent's Last Case
drboyd is offline   Reply With Quote
Old 03-01-2015, 05:54 PM   #10
Rivet Master
 
drboyd's Avatar

 
1978 25' Tradewind
Metro Phoenix , Arizona
Join Date: Jun 2003
Posts: 1,428
That would be "uneven" floor. Dang autocorrect!
__________________
"Between what matters and what seems to matter, how should the world we know judge wisely?" - E.C. Bentley, Trent's Last Case
drboyd is offline   Reply With Quote
Old 03-01-2015, 07:01 PM   #11
4 Rivet Member
 
thehandyman's Avatar
 
1980 24' Caravelle
corpus christi , Texas
Join Date: Jul 2013
Posts: 263
It works.
__________________
thehandyman is offline   Reply With Quote
Old 03-02-2015, 05:03 PM   #12
3 Rivet Member
 
Dallas Center , Iowa
Join Date: Jan 2007
Posts: 127
The Handyman has it right.
__________________

__________________
Earthcreeper is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
'76 Argosy - Back Brake Line - can't find?! MrJ Mechanics Corner - Engines, Transmission & More... 3 07-17-2012 05:43 AM
Trying to find Grandpa's Old Airstream...can I find it with Serial Number?? Jakescheid Our Community 13 11-22-2011 12:01 PM
New Center Line Hitch vs. Equal-i-zer BillB44 Hitches, Couplers & Balls 30 06-29-2010 11:29 AM
How can I find specs and model line up for mine? ob1coby Member Introductions 1 04-15-2007 06:52 AM
Need to find adaptor to go from this outlet on my generator to shore power line in AS wacnstac Generators & Solar Power 11 04-27-2006 12:49 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:07 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.