RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×


Reply
 
Thread Tools Display Modes
 
Old 01-17-2020, 09:29 AM   #1
Bus Crazy
 
Join Date: Sep 2018
Posts: 1,894
Year: 2007
Coachwork: Thomas Built
Chassis: Minotour
Engine: Chevy Express 3500 6.6l
Solar Mounting

I知 planning on installing 7/8 Unistrut on the roof for solar panels. I知 running it longitudinally. I知 considering 8mm blind stainless steel rivnuts with a rubber seal. The skin of the bus is .060 aluminum. I was thinking of a nut every 2 feet.

Is that going to be strong enough and stay watertight?

Thanks
Danjo is online now   Reply With Quote
Old 01-18-2020, 12:04 PM   #2
Bus Crazy
 
TheHubbardBus's Avatar
 
Join Date: Apr 2019
Posts: 1,063
Seems rivnuts would be useful for something you plan on removing more than once. Is that the case?

We're doing something similar w/ unistrut, but it will support both panels & a catwalk. My plan was to simply bolt through the roof into the ribs, & seal with 3m 5200. Of course we have access to both sides at present (gutted).
__________________

TheHubbardBus is offline   Reply With Quote
Old 01-18-2020, 06:46 PM   #3
Bus Crazy
 
Join Date: Sep 2018
Posts: 1,894
Year: 2007
Coachwork: Thomas Built
Chassis: Minotour
Engine: Chevy Express 3500 6.6l
Quote:
Originally Posted by TheHubbardBus View Post
Seems rivnuts would be useful for something you plan on removing more than once. Is that the case?

We're doing something similar w/ unistrut, but it will support both panels & a catwalk. My plan was to simply bolt through the roof into the ribs, & seal with 3m 5200. Of course we have access to both sides at present (gutted).
Yeah, I’m starting to think through bolting through the ribs is probably a better way to go. I saw on McMaster Carr sealing washers. I thought that I will through bolt with a carriage bolt, then the sealing washer on the outside, then some sealing stuff (sikaflex?), then the unistrut, a lock washer, and a nut
Danjo is online now   Reply With Quote
Old 01-18-2020, 10:22 PM   #4
Bus Crazy
 
Join Date: Sep 2018
Posts: 1,894
Year: 2007
Coachwork: Thomas Built
Chassis: Minotour
Engine: Chevy Express 3500 6.6l
3M™ Marine Adhesive/Sealant 4000 UV
Danjo is online now   Reply With Quote
Old 01-19-2020, 01:19 AM   #5
Bus Nut
 
Join Date: Jun 2016
Location: Orange County, CA
Posts: 987
Year: 1990
Coachwork: integral
Chassis: Crown Supercoach II (rear engine)
Engine: Detroit 6V92TAC, DDEC 2, Jake brake, Allison HT740
Rated Cap: 37,400 lbs GVWR
My roof walkway (to which my eight panels are hinged) and the panels' lower supports are all bolted through the roof ribs with 3/8" and 5/16" stainless bolts from underneath, with EPDM washers sealing against the roof. So far so good - after several winters of sometimes very heavy rains I haven't had even one single drip coming through all those roof penetrations. I would NOT trust just the roof skin to hold against the wind when driving at 60-plus MPH - that's almost hurricane-force wind. You've got lots of strong roof ribs, more than on any other vehicle on the road, so why not use them?

John
Iceni John is offline   Reply With Quote
Reply

Tags
rivnut

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 08:33 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
×