Insulating the floor and belly pan install

It's been tricky to attach the shell over the bellypan but I got it all figured out and sent rivets through the top shell, belly pan, 'C' channel, and belly pan.  The belly pan aluminum is crimped over the channel, so the rivets go through it twice.  

  Here's where old meets new.  I used the old pan in the corners - because I didn't think I could figure out how to shape the aluminum and they are still in fair condition.

New pan on the street side.  Looks great.













This is "foam it green" brand sprayfoam.  It's the 202 kit of structural, closed cell product.  I put it on thick, so it only covered about 80 sqft.  Price with shipping was about $250, so that's more than $3/sqft.  Not as expensive as some options but certainly more than others.  Overall, I'd say that I'm moderately pleased.  It is fairly rigid and has decent adhesion but wasn't very difficult to remove in areas of overspray.






One of the biggest complaints I've heard is that the product makes a mess.  So here's a picture of the mess.  Not too bad in my opinion.

Buttoning up the belly pan over the sprayfoam insulation.  I had to carve off a few bits.  For carving, I used a dewalt saws-all blade as a knife & it worked great.

Reattaching the shell

 Finally have the shell back on the chassis.

In this picture, you can see that I've removed the sawhorses and have begun lowering the shell back onto the chassis/floor.

As with lifting it, I use a bottle jack to support half the shell, put some short legs on the wood frame and lower it down to the new level.

The 'C' channel and brackets attaching it to the studs were in bad shape.  In this picture, I'm fabricating new L brackets to make the attachment. Easier to drill holes in the large material before I cut it.  

  Cutting the new brackets.

Piling up the new brackets.

Reattachment is tricky.  This Streamline trailer had belly pan wrapped and crimped on the 'C' channel.  I'm faced with the challenge of trying to figure out how to make sure my wood floor has the right radius corners (old ones were so rotten I had to guess), attach bellypan, attach shell, attach floor, and sprayfoam the underfloor.  In this picture, you can see that I've crimped one section of bellypan so that I can lower the shell over it.

 Removed most of the external wood framing.  These back two legs are allowing me to use floor jacks to adjust the shell for final touchdown.

 Instead of rebuilding the curved corners, I'll keep them and wrap as much new material over them as I can.

 This extra sheet of new is to guide the lip of the shell over the new bellypan lip.

 All of the external wood is gone and starting to lower the back.

 Installed the rear 'C' channel and lowered the shell.

 All of the interior wood framing is gone and starting to make solid attachments all around.

Finished Wastewater System

Wastewater system is done!!!  Both holding tanks are in and glued.

I had to alter the frame but was able to put two holding tanks between the floor and belly pan.  These tanks are from Inca Plastics and are 23 gallons each.  Tanks were just a bit warped and didn't fit within the dimensions on the blueprint, so I had to cut some of the iron and re attach.

 Here you can see the cable valterra valves.  I welded a piece of angle iron to mount the handles and will figure out how to make that look pretty later.

Things are starting to look good!  The new wheel wells are beautiful.  Lafe Shoopman of L&C Custom did a great job on the wheel wells and only charged me $300 for both.  I lifted the trailer 3.25" with the new InlandRV (dexter) torsion axles and so I took three inches out of the wheel wells.  This should give me precious extra cabinet space.  My only complaint is that InlandRV did not respond to three requests asking them how much travel I should allow for with the new axle setup.  Annoying.  I couldn't wait forever so I just cut off what I added in height.  If that doesn't work, I'm going to be super pissed at InlandRV.

Put the trailer back under the shell!  Oh hells yeah.  Feels great, can't imagine how good it'll be to get it reconnected - much less useable!

So far, it's looking pretty good.  The rear end was completely rotten, so I didn't have much in the way of templates.  My plan is to lower the shell down onto the chassis and make the final adjustments to the wood and attach the bellypan, etc all at once.  I think I'll be able to do any needed modifications but we'll see:)  I also plan to use structural sprayfoam under the wood floor as I put the belly pan on.  Lots of stuff in the airforums about how sprayfoam falls apart but I can't find a credible account of closed cell foam failing - so I'll give it a try.  Properties are too good to pass up.  Fiberglass batt is popular but it's also the reason I had to do a frame off in the first place!