Reply
 
Thread Tools Display Modes
 
Old 02-18-2007, 06:43 PM   #1
Mini-Skoolie
 
BBTC2K's Avatar
 
Join Date: Feb 2007
Location: Ocoee, FL
Posts: 27
Year: 1983
Coachwork: GMC
Chassis: RTSII
Engine: 6V92TA
Rated Cap: 55
Send a message via AIM to BBTC2K Send a message via Yahoo to BBTC2K
Rooftop AC in place of escape hatches?

I was wondering if anyone has ever used their roof hatches as a spot for either roof ac or fantastik fans?

If so, how did you get them to fit?

thanks

shawn
__________________
School Bus Driver/Instructor/Mechanic...

proud single custodial dad to 18yr old son Jeremey, who wants to try his hand at driving my RTS
BBTC2K is offline   Reply With Quote
Old 02-18-2007, 07:45 PM   #2
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
I often wondered about the same thing... Just eye-balling it, it looks as though they're made to order for a roof mounted AC unit
oldog12 is offline   Reply With Quote
Old 02-18-2007, 09:53 PM   #3
Skoolie
 
eggman's Avatar
 
Join Date: Apr 2006
Location: Hamel, IL
Posts: 160
The way it looks to me, is that the emergency roof top opening is around 18-20 inches, where the roof top is meant for 14 inches.
__________________
Jeff
95 IH 72 passenger transit school bus w/ DT466 and 545 Allison.
79 IH Scout II/392 (0.030 over) Hamilton Injected/727/D300/Full size axles/36" Swampers/Lockers/OBA/38 gal Custom fuel tank, roll bar, tube doors.
eggman is offline   Reply With Quote
Old 02-18-2007, 10:32 PM   #4
Bus Nut
 
frank-id's Avatar
 
Join Date: Nov 2003
Location: Twin Falls, Idaho
Posts: 809
Roof vents

Most buses roof hatches are larger than size required for a AC unit. The hole needed for a fan or AC unit is 14 1/8 inch. Covering an existing hole usually requires some roof work and some method of reducing the hatch hole. Most roof AC units use long bolts to clamp unit to the roof with no fasteners connected to roof. Carrier units are the most expensive but seem to me to be the best of the AC units. Frank
frank-id is offline   Reply With Quote
Old 02-19-2007, 10:40 AM   #5
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
Wow, it sure seems a waste not to use those holes...
oldog12 is offline   Reply With Quote
Old 02-19-2007, 10:59 AM   #6
Bus Crazy
 
Steve's Avatar
 
Join Date: Jul 2002
Location: Central Iowa
Posts: 1,838
Send a message via AIM to Steve
Better that the holes are too big, if I had escape hatches I would definetly make some adapters to use them for A/C. With all that space around it you could make some really nice trim.
__________________
View my 1972 Ward: Topic from the Build : The Picture Gallery
View my 1986 Blue Bird: Topic from the Build : The Picture Gallery
View my 1960 GMC: Topic from the Build : The Picture Gallery
Steve is offline   Reply With Quote
Old 02-19-2007, 11:25 AM   #7
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
I was thinking along the same line... its there, might as well use it...
oldog12 is offline   Reply With Quote
Old 02-19-2007, 12:49 PM   #8
Bus Nut
 
frank-id's Avatar
 
Join Date: Nov 2003
Location: Twin Falls, Idaho
Posts: 809
Roof vent hole

I think the most important consideration for roof AC is placement. My Crown bus has 2 roof AC units and a center fantastic vent. One AC is at thr very front of the bus to allow some creature comfort while traveling down the hiway. I think I'm also gonna make a curtain to restrict the cooling air to be a the most value to the driver. I mostly travel alone. My bus is not yet insulated so heat and cooling are not great. My plan is to drill many 1/2 inch holes and inject insta foam with care. After foam has stopped expanding, carpet will be glued to ceiling, and with wood strips screwed in place. Frank
frank-id is offline   Reply With Quote
Old 02-19-2007, 01:00 PM   #9
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
I was also wondering about carpeting my ceiling in hopes of increasing the R value, I'm just a little concerned about the glue not being able to handle however hot the roof/ceiling may get
oldog12 is offline   Reply With Quote
Old 02-19-2007, 01:17 PM   #10
Bus Crazy
 
Steve's Avatar
 
Join Date: Jul 2002
Location: Central Iowa
Posts: 1,838
Send a message via AIM to Steve
I think the best benefit of the carpeting is the sound deadening you will get from it.
__________________
View my 1972 Ward: Topic from the Build : The Picture Gallery
View my 1986 Blue Bird: Topic from the Build : The Picture Gallery
View my 1960 GMC: Topic from the Build : The Picture Gallery
Steve is offline   Reply With Quote
Old 02-19-2007, 01:19 PM   #11
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
Santa's Reindeer?
oldog12 is offline   Reply With Quote
Old 02-19-2007, 11:23 PM   #12
Bus Nut
 
GoneCamping's Avatar
 
Join Date: Sep 2006
Posts: 704
What you're going to find is, the gaskets they sell to seal them with are only 14" and it's pretty likely anything larger is just not going to fit the under side of the roof top unit.

You probably could formulate some kind of fan system and a screen without too much trouble though. I like having just an opening hatch up there....with screen of course...
__________________
*Cliff*

You just might be a Redneck if...
...your motor home used to be a school bus!
...Your living room has a steering wheel!
...Your home has brake lights

1994 Jeep Grand Cherokee
1989 Thomas Diesel Pusher (Cat 3208/Freightliner)
Chesapeake, Virginia
GoneCamping is offline   Reply With Quote
Old 02-19-2007, 11:46 PM   #13
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
What would happen if you cut a hole into the hatch cover itself and mounted the AC on the hatch cover?
oldog12 is offline   Reply With Quote
Old 02-19-2007, 11:56 PM   #14
Skoolie
 
eggman's Avatar
 
Join Date: Apr 2006
Location: Hamel, IL
Posts: 160
I dont see the plastic hatch cover holding up to the vibration nor the weight that a roof top unit has. I would be keeping the escape hatches for just that, as they are designed for. And cutting a couple of 14" holes in the roof to accept the AC units.
__________________
Jeff
95 IH 72 passenger transit school bus w/ DT466 and 545 Allison.
79 IH Scout II/392 (0.030 over) Hamilton Injected/727/D300/Full size axles/36" Swampers/Lockers/OBA/38 gal Custom fuel tank, roll bar, tube doors.
eggman is offline   Reply With Quote
Old 02-20-2007, 12:15 AM   #15
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
I see your point, I was sure hoping to try avoiding cutting another hole in the roof...
oldog12 is offline   Reply With Quote
Old 02-20-2007, 12:45 AM   #16
Bus Geek
 
the_experience03's Avatar
 
Join Date: Feb 2006
Location: Saint James, MN
Posts: 2,669
Send a message via MSN to the_experience03 Send a message via Yahoo to the_experience03
Good idea with the drill a hole and fill with foam idea, Frank. Are you concerned at all about trapping water or anything? That seems like something I might want to try.
__________________
http://farm4.static.flickr.com/3024/...09f20d39_m.jpg
Skooling it...one state at a time...
the_experience03 is offline   Reply With Quote
Old 02-20-2007, 10:07 PM   #17
Bus Nut
 
GoneCamping's Avatar
 
Join Date: Sep 2006
Posts: 704
Well, if you wind up laying that bus over on it's side somehow, climbing out the roof hatch might be handy!!

I think in the long run, you'll be better off cutting a hole the correct size rather than trying to retro a hole that is too big.
__________________
*Cliff*

You just might be a Redneck if...
...your motor home used to be a school bus!
...Your living room has a steering wheel!
...Your home has brake lights

1994 Jeep Grand Cherokee
1989 Thomas Diesel Pusher (Cat 3208/Freightliner)
Chesapeake, Virginia
GoneCamping is offline   Reply With Quote
Old 02-20-2007, 10:36 PM   #18
Bus Nut
 
oldog12's Avatar
 
Join Date: Aug 2006
Location: Illinois
Posts: 381
Quote:
Well, if you wind up laying that bus over
You see a lot of roll-overs?
oldog12 is offline   Reply With Quote
Old 02-21-2007, 01:48 AM   #19
Bus Geek
 
the_experience03's Avatar
 
Join Date: Feb 2006
Location: Saint James, MN
Posts: 2,669
Send a message via MSN to the_experience03 Send a message via Yahoo to the_experience03
It would have to be a pretty spectacular rollover to block the side door, rear door, and kick-out front windows.
__________________
http://farm4.static.flickr.com/3024/...09f20d39_m.jpg
Skooling it...one state at a time...
the_experience03 is offline   Reply With Quote
Old 02-28-2007, 10:50 AM   #20
Skoolie
 
Join Date: Mar 2005
Location: Plymouth MA
Posts: 197
I see a couple obvious things:
The hatch cover is too weak to support the AC unit. Simply make a cover or adapter (sheet ply with aluminum covering, self-adhesive foam tape to seal off), place that in the opening, and use longer screws or threaded rod to replace the now-too-short ones.

Next, if you use/build the adapter, maybe set it up so that a couple hold-down latches can be built in....SOMEONE out there makes them, I've seen similar latches in hardware stores (National Hardware brand?). Then if you need the roof exit in case of a rollover, you unlatch the AC, drop it off, and bail out.
__________________
The tool storage is nice, but where do I put the bed?
Ryan Grimm is offline   Reply With Quote
Reply

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
rooftop vent proconsul100 Heating, Cooling and Appliances 15 12-04-2012 10:41 AM
The Great Escape....Soon MichaelsMission Skoolie Conversion Projects 1 11-24-2010 07:03 PM
Rooftop Decks arfisher83 Conversion General Discussions 9 08-13-2009 04:05 PM
large selection of doors/windows/hatches keith Classifieds | Buy, Sell, Swap 0 03-03-2009 08:22 PM
What to do with roof safety hatches? dammitAndy Conversion General Discussions 17 04-27-2005 06:24 PM

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 06:52 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×