My Second Belly Band Thread - Page 3 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-20-2014, 03:22 PM   #29
Senior Member
 
Francesca Knowles's Avatar
 
Name: Francesca Knowles
Trailer: '78 Trillium 4500
Jefferson County, Washington State, U.S.A.
Posts: 4,543
Registry
Quote:
Originally Posted by hrose414 View Post
I was just at the fiberglass shop talking with the guy there and he asked why is it necessary to fiberglass the outside, could you not just bondo the 2 halves together after removing the washers & rivets?
Sounded like a good point. Be a lot quicker than fiberglassing it. I'm sure I read somewhere that it's not structural anyways since the inside is fiberglass was over where the belly band washers on the inside are.
I disagree with the "not structural" part of that statement and think that joint needs as a minimum the strength of the fiberglass cloth/fibers, especially since/if all rivets and washers have been removed.

I have mixed feelings about assertions that the joint will hold long term without the support provided by the washer arrangements...that aside, I certainly wouldn't rely only on the original inner thin layer of fiberglass to do the job, faced on the outside only with Bondo.
__________________

__________________
.................................
Propane Facts vs. Fiction:. Click here
Tow Limit Calculator: Click here
Francesca Knowles is offline   Reply With Quote
Old 05-20-2014, 03:24 PM   #30
Senior Member
 
David Tilston's Avatar
 
Name: Dave W
Trailer: Trillium 4500 - 1977, 1978 (2), 1300 - 1977, 1973, and a 1972
Alberta
Posts: 5,317
Registry
That inside bandage is a pretty thin sheet of fibreglass, but it is all that is attaching the top to the bottom under normal circumstances. It would probably be fine with just bondo, but I doubt using fibreglass instead of bondo is much more work, (I found it really fun) and the end result is also likely stronger and less prone to cracks.

On edit: I doubt that the metal plates, rivits, and belly band add anything to the structure. On my first belly band thread, many of the plates had rusted out completely, and the belly band was falling off.

The cost was minimal, like less then $100.
__________________

__________________
David Tilston is offline   Reply With Quote
Old 05-20-2014, 03:32 PM   #31
Member
 
Name: Hughe
Trailer: Trillium 76
British Columbia
Posts: 30
I do agree with having added strength, and if it's not tough then I would rather go your way. I haven't fiberglassed before and want to do it myself and have it look good. David did you find there was a bulge where you fiberglassed, or did you grind the Fiberglass down around the spot where you attached to keep it flush? Does that make sense? Obviously I will have to sand the gel coat down to have something to adhere the Fiberglass to, I just want it to look smooth. Do you have any pictures?
Cheers
__________________
hrose414 is offline   Reply With Quote
Old 05-20-2014, 03:44 PM   #32
Senior Member
 
David Tilston's Avatar
 
Name: Dave W
Trailer: Trillium 4500 - 1977, 1978 (2), 1300 - 1977, 1973, and a 1972
Alberta
Posts: 5,317
Registry
If there was a bulge, I ground it down. In some cases, that meant that the metal plate fell right out. I was looking at the first trailer I did this on. I am amazed how well it worked out. Since I went around grinding the top, then the bottom till the gell coat was exposed, there is just the slightest of peak in the middle. Some time with the orbital sander, and the whole thing is almost ready for paint.

I think I did a better job the second time, but that trailer is still in Ontario.
__________________
David Tilston is offline   Reply With Quote
Old 05-21-2014, 10:23 PM   #33
Senior Member
 
Trailer: Trillium 4500
Posts: 163
I did the bondo version of this project a few years ago (see the bye bye belly band thread); here's my take away. David's glass method will be ultimately stronger. The bondo method is faster (weekend project) and, in my opinion, it's stronger than the original construction. But not much. After a couple years my repair looks great, but time will tell.
Click image for larger version

Name:	DSCN0618.jpg
Views:	44
Size:	131.6 KB
ID:	71351
__________________
Scott H is offline   Reply With Quote
Old 05-21-2014, 10:55 PM   #34
Member
 
Name: Hughe
Trailer: Trillium 76
British Columbia
Posts: 30
Thanks Scott that does look good! When you went to repaint it after doing that bondo job did you need to remove the gel coat from the entire trailer or do you just paint over the existing gel coat?
__________________
hrose414 is offline   Reply With Quote
Old 05-21-2014, 11:15 PM   #35
Member
 
Doug2000's Avatar
 
Name: Doug
Trailer: Trillium
Ontario
Posts: 64
I would not use bondo at all. It's not at all structural, it's a great filler, that's it. When your screaming down the highway and hit the railway tracks a little to fast, you want that belly band to be strong. Bondo will just crack.

When you apply fibreglass, make sure it is Polyester Fibreglass. I bought mine in bulk at the Marina Repair Shop. Only apply it to virgin clean original fibreglass. I ran into a problem when fixing my floor, I had a little glue I didn't get off and it prevented a proper cure.

Do it right with compatible materials so if you have to come back its easier to fix later. If you just use Polyester Fibreglass then you won't have compatibility problems.
__________________
Doug2000 is offline   Reply With Quote
Old 05-22-2014, 11:17 AM   #36
Senior Member
 
David Tilston's Avatar
 
Name: Dave W
Trailer: Trillium 4500 - 1977, 1978 (2), 1300 - 1977, 1973, and a 1972
Alberta
Posts: 5,317
Registry
I think the way I did it is stronger, but if using Bondo works, and lasts, who cares? There is not only one reason I do it with fibreglass, but several. It may be mainly that I really like grinding and laying down fibreglass. Really therapeutic for me.

I have four more belly bands to go, probably more in the future. I will still use fibreglass. I am a slow worker. I think I could do it in a weekend, if my kids did not require my attention, and the moons are aligned. But since I only put an hour or two in at a time, it takes longer.

Time estimates:
Prep, (news paper): 1 hour
Grinding: 2-3 hours
Removing the metal plates: 4 hours
Grinding the sockets: 1 hour
Laying the glass: 4 hours
Grinding back to the gel coat: 3 hours
Sanding flat: ??? haven't done it yet
Bondo: ???
Sanding: ???
Painting: ???

An estimated 16 hours to do what I have done. Other then the brown fibreglass showing, it looks good. I guess I am pretty good with a grinder. I think a few hours with the orbital sander and I might not need any bondo.

In preparation for launch day, I am going to do a complete referb of Launch Pad, this summer. This includes re-install the windows, re-install the door, and belly band. This time, I will try to go fast on all three. I will try to keep a log of the hours I spend.

The door was way easier then I though it would be.
__________________

__________________
David Tilston 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
trillium belly band Rarebird Problem Solving | Owners Helping Owners 16 09-27-2017 10:15 AM
My First Belly Band Thread David Tilston Modifications, Alterations and Updates 57 05-03-2016 10:29 AM
Polishing That Belly Band steve J Care and Feeding of Molded Fiberglass Trailers 22 10-13-2014 08:03 AM
Trillium Belly band Barrett family Problem Solving | Owners Helping Owners 18 08-21-2012 11:50 AM
Belly Band Ruth C. Problem Solving | Owners Helping Owners 2 06-19-2011 08:17 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:22 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.