Reply
 
Thread Tools Display Modes
 
Old 03-09-2015, 08:24 PM   #341
Bus Nut
 
gmarvel's Avatar
 
Join Date: Jul 2013
Location: Danville, California
Posts: 345
Year: 1988
Coachwork: Crown
Chassis: Supercoach
Engine: DD6-71T
Rated Cap: 78
Re: Journey Begins - 1988 Crown Conversion

MASCERATING PUMP FOR BUS
We purchased a mascerating toilet from Thetford and that has already been installed in the bus. We are now at the point where our FMCC (Fecal Matter Control Center) is being built. There is a large compartment on the driver side of the bus near the rear axle that once housed the huge 8D batteries. We replaced those with small but more efficient AGM batteries. This has left a large area that is being converted into our sewage and water hookup area.

We decided to go with a pump for the black and gray water tanks that includes a mascerating function. We will not know exactly where we might need to dump our sewage and we wanted a device that could pump both uphill as well as long distance. We also wanted something that will take the already slurry composition of our black water waste and make it even finer. That way we could use a 1" flexible collapsible hose instead of the massive 3" sewage hoses common with most RV's. The 1" hose takes up a tiny fraction of the room that a standard 3" RV hose uses.

We decided on a Thetford Sani-con macerating system (Model number 70224). This model screws directly onto the sewage outlet for the RV and is a permanent install. They have another model that allows for a 90 degree bend when installing it. In our case we went with a straight connection. It also has a gray water bypass so you can set your gray water up to be constantly dumping into the RV site's sewage connect rather than building up in the tank. This allows the gray water to trickle out without having to turn on the pump.

This system will allow you to dump your waste up to 25' uphill and up to 150 feet away from the RV. It is very powerful.

It has great reviews.

I have seen prices as high as over $400 on this unit. Camping World has it on sale for $349.97. I got it at americanrvcompany.com for $315.93.

It comes with everything, including electrical, so you don't need to buy additional parts. Just screw it on to your sewage outlet and 12 volt electrical and you are ready to go!


__________________
______________________
Greg and Donna Marvel

Danville, California
http://www.transtraks.com
gmarvel is offline   Reply With Quote
Old 03-09-2015, 08:54 PM   #342
Bus Nut
 
Join Date: Feb 2015
Posts: 258
Would love a review on this unit when you get it in and use it. We're looking at exactly the same model. One benefit to these units is being able to dump at a house. Most houses have washing machines that have hang-over hoses that dump straight into an open hole. These things can go right in there, if the homeowner (you, a relative, etc.) doesn't mind.
taskswap is offline   Reply With Quote
Old 03-09-2015, 09:18 PM   #343
Bus Crazy
 
Stu & Filo. T's Avatar
 
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,520
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
Quote:
Originally Posted by gmarvel View Post
You are absolutely right. My overhead lights that took the place of the school bus red crossing lights have swivel hoods that can be dropped down in front of the lights if required by law in that state.
Greg did you find these somewhere or did you have the original's modified ,,

Stuart

P.S.I must apologize I keep meaning to call you but time passes
Stu & Filo. T is offline   Reply With Quote
Old 03-09-2015, 10:42 PM   #344
Bus Nut
 
gmarvel's Avatar
 
Join Date: Jul 2013
Location: Danville, California
Posts: 345
Year: 1988
Coachwork: Crown
Chassis: Supercoach
Engine: DD6-71T
Rated Cap: 78
Hi Taskswap,

I read a bunch of reviews on the web about this model. They were all good. I figure with my mascerating toilet first breaking down the "solids" and then going through a mascerating pump at the waste water outlet in my FMCC (Fecal Matter Control Center), I should get nothing but liquid going through that small 1" collapsible hose.

I will be more than happy to post my results after a real test run!!
__________________
______________________
Greg and Donna Marvel

Danville, California
http://www.transtraks.com
gmarvel is offline   Reply With Quote
Old 03-09-2015, 11:41 PM   #345
Bus Nut
 
gmarvel's Avatar
 
Join Date: Jul 2013
Location: Danville, California
Posts: 345
Year: 1988
Coachwork: Crown
Chassis: Supercoach
Engine: DD6-71T
Rated Cap: 78
Re: Journey Begins - 1988 Crown Conversion

Hi Allwthrrider,

Time slips by a great deal when you are working full time and trying to do a bus conversion. Time becomes a scarce commodity.

This 1988 Crown was originally built for a contractor in San Diego (Goodall's). A transportation director at one of my client school districts was the guy that ordered it when he worked for Goodall's. He really liked the bus. So, 25 years later when I bought the bus from the next transportation operation that owned it, I had this director have his mechanics check it out. He said it was in great shape. Because it was originally built for a contractor, the bus came with the swivel black hoods to cover the red school bus lights when it was being used on a non-school run. Under California law, a school bus is required to cover its red lights when not on a home-to-school run or activity trip. School districts usually use tape to black out their red lights and then a fiberglass panel that covers up the School Bus signage. Some districts ignore the law entirely and never cover up their lights or school bus signs. Contractors would get in real trouble if they ignored the rule, so that is why Crowns originally built for contractors used these swivel light hoods.
__________________
______________________
Greg and Donna Marvel

Danville, California
http://www.transtraks.com
gmarvel is offline   Reply With Quote
Old 03-12-2015, 05:05 PM   #346
Mini-Skoolie
 
Join Date: Jul 2014
Posts: 21
Hi Greg,

Just now catching up on your thread. I had subscribed to it, but for some reason I'm not getting the email notifications. Thanks so much for posting pictures of your custom trailer hitch installation. That's really helpful. Your pictures reminded me of this post (see below) of the inside of your rear compartment. Are the beams in the floor of the storage compartment connected to the trailer hitch beams below the compartment? Looks like they're at about the same width apart.

Regards,
Wolfy


Quote:
Originally Posted by gmarvel View Post
Rear Trunk Area Primed and Ready for Lizard Skin Coating

The trunk area of a Crown is massive. It was used (at least by me when I drove them) for band equipment, sleeping bags and backpacks for camping runs, etc. It makes up for the lack of storage on the sides due to the mid-ship engine under the bus.

We have cleaned the trunk thoroughly, removed any rust spots, and primed it. We are going to use a special coating called Lizardskin to insulate and deaden the sound getting into the cabin of the bus. We found a dealer that gave us a substantial discount on the material.

The Lizardskin is a spray on two part process. The first layer is an acoustical spray. You spray it on to a depth of 0.04 inches. Wait 24 hours and then spray on the thermal insulation to a similar depth. Think of this like a truck bed liner on steroids designed to reduce thermal transfer and noise. Classic and hotrod car buffs use this stuff. I did substantial research on this product and determined that it is the best. I am also going to use this product to coat the floor of the bus before putting my new wood flooring down. I was originally thinking of doing some sort of spray foam under the bus. What a nightmare. It is like a maze under there. By spraying this inside the bus on the floor, I can get a complete insulation package rather than the spotty coverage I would have under the bus. I also get the added benefit of not losing very much headroom.

I had them spray a large sheet of thin metal with this stuff and then tested it out. With a flame hitting the other side of the metal I could still put my hand on the non-coated side of the metal and leave it there for some time. I then went to see completed projects that had used this product and was amazed at the sound deadening capacity. Road noise should be substantially reduced.

We are actually going to have this spray used in the engine compartment, the generator compartment and under the wheel wells to also reduce noise and heat getting into the cabin of the bus.

The web site for this product is:

Ceramic Insulation - Sound Control Insulation Products | LizardSkin

I will let you all know how it goes. A picture of the massive trunk area is below:

WolfyWho is offline   Reply With Quote
Old 03-12-2015, 05:11 PM   #347
Mini-Skoolie
 
Join Date: Jul 2014
Posts: 21
Oops, nevermind about my last question. I see that you've already shown pictures of that (in response to one of my questions) describing that the beams went through the compartment. It's been too long since I've been through your thread. Need to start over from the beginning again!

Your build is looking awesome! You must be so proud.

Regards,
Wolfy


Quote:
Originally Posted by gmarvel View Post
Hi WolfyWho,

TRAILER HITCH
Crown frames do not go all the way back to the rear bumper. The rear trunk area is designed as a crumple zone to absorb the impact of a rear end collision. This helps protect the occupants by having the rear area absorb the force of the impact. The frame itself is near the rear wheels. So, there is a significant length between the frame and the rear bumper where the trailer hitch goes. We did a lot of thinking about this before we came up with the solution. We welded beams to the rear of the frame and brought it backwards to the rear bumper. The hitch is attached to this beam structure. I am told by the guys that did it that it could actually haul a load of up to 20,000 pounds. I have no intention of pulling a tow vehicle or trailer with that kind of weight. However, I always believe over-engineering is best. It kind of goes along with the whole Crown concept, since they were also over-engineered and built to last for many decades. You will note in the picture below that the beams were actually run through the bottom of the rear trunk area. That was necessary so that the hitch could be properly attached to the bottom of the rear bumper. I don't know if we will use the hitch that much, but I figured the time to do it was now, not as an after thought. I know that we might have a need to bring along one of our cars or SUV's and I wanted a hitch that could handle pulling a Suburban if need be. I don't have any pictures of the actual attachments on the frame. However, I can get those when the bus is up on a lift and I can then post them.












CEILING VENT FAN FOR THE SHOWER
This story is a pain to tell. The measurements were taken and taken and taken again before the hole was cut in the roof for the really nice exhaust fan. When the stainless steel shower was placed in the bus, the hole was off by about two inches (we were planning to cut a hole in the top portion of the shower ceiling to expose the fan hole and assembly. However, because of this measuring screw up, the fan was off by a few inches. One answer was to move the shower forward the necessary few inches. However, that had a domino impact on that whole side of the bus (driver's side). The sofa, dinette, stove cabinet and sink cabinet all were impacted and we did not have room forward of the shower to spare in our layout. So, basically we were screwed. We made the difficult decision to move the fan over to the other side of the bus and it will now be over the toilet/sink area opposite the shower. This necessitates covering up the hole, and repainting that area. What a royal pain. Lesson learned.

RUBBER FLOORING AND LIZARD SKIN INSULATION
We tested the Lizard Skin on a portion of the rubber floor and it adhered fine. We tested it with open flame on it and it handled it perfectly. Based on that test, we installed the Lizard Skin insulation over the rubber flooring. Fellow skoolies need to understand that Crowns are made differently than any other bus. The stories on this site of rubber flooring being pulled up and finding a sea of rusted floor underneath the rubber is not something you will see in a Crown. Crown floors are made with heavy duty and think marine grade plywood laid on top of metal floor beams. This eliminates the rusting problem found in many other buses. Crowns that are over 40 years old still have excellent floors. That is why we decided not to pull up the existing rubber flooring as there was really no need. The Lizard Skin acoustical/thermal insulation was sprayed right over the rubber flooring. The difference was dramatic, both in sound and heat penetration into the bus. When we took the bus out on the road after the insulation was sprayed onto the floor, it was the quietest Crown I have ever driven. There is a reason that race cars and hot rods use this stuff. It truly works.

By the way, we also sprayed the Lizard Skin insulation in the trunk area before laying down the new rubber flooring in the trunk. The spray insulation went on all sides of the trunk, including the ceiling (the opposite side of the trunk ceiling is the inside of the rear of the bus where our bedroom is going). We also sprayed the underside of the wheel wells, the underside of the step well, and the engine compartment, all for the purpose of reducing the intrusion of noise and temperature into the interior of the bus.
WolfyWho is offline   Reply With Quote
Old 03-12-2015, 05:24 PM   #348
Bus Nut
 
gmarvel's Avatar
 
Join Date: Jul 2013
Location: Danville, California
Posts: 345
Year: 1988
Coachwork: Crown
Chassis: Supercoach
Engine: DD6-71T
Rated Cap: 78
It is all structurally connected. We had an engineer check everything out before we went forward. As one forum member noted, if you connect a commented, we don't want our bumper and the rear trunk area to get detached and fall out on the road. I was told that this setup we constructed could tow 20,000 pounds. We have no intention of towing that much, no more than 10,000 pounds. In California (and probably other states), you need a Class A commercial license if you are going to tow something over 10,000 pounds.
__________________
______________________
Greg and Donna Marvel

Danville, California
http://www.transtraks.com
gmarvel is offline   Reply With Quote
Old 03-12-2015, 11:19 PM   #349
Bus Nut
 
gmarvel's Avatar
 
Join Date: Jul 2013
Location: Danville, California
Posts: 345
Year: 1988
Coachwork: Crown
Chassis: Supercoach
Engine: DD6-71T
Rated Cap: 78
Re: Journey Begins - 1988 Crown Conversion

CROWN AIR BAG REPLACEMENTS
I was checking out the rear air bags in the Crown and discovered that mine had cracks near the bottom of the bags. They are not leaking yet, but it is just a matter of time.

So, I started the odyssey of trying to find replacements. Of course, with buses built in the 1980's I did not expect to have a ready supply at parts houses.

For those skoolie members that have Crowns and air bags, mine are:

Firestone Suspension Air Bags
Model #W01-358-9432

No one carries that particular model in stock. You have to special order them from a Heavy Truck/Bus dealer that carries Firestone. The good news for all those Crown owners out there is that I found a supplier that can order them directly from Firestone. Firestone still makes them, but on an individual order basis. The only manufacturer that used that particular air bag suspension model was Crown. For some "strange" reason, Crown has not been ordering any air bags since they were closed by GE back in 1991. So, Firestone discontinued making them a number of years ago, but kept all the specifications so they could be made on an as needed basis. Firestone promises them within four to six weeks from order date.

The vendor is:

Michigan Truck Spring
Website: www.truckspring.com
Phone: 1(800)358-4751
Contact: Ryan

I am paying $268 for each air bag, but I am getting perfectly matched new air bags that should last me for 25+ years.
__________________
______________________
Greg and Donna Marvel

Danville, California
http://www.transtraks.com
gmarvel is offline   Reply With Quote
Old 03-14-2015, 10:55 AM   #350
New Member
 
Join Date: Mar 2015
Location: Walnut Creek, CA
Posts: 2
Year: tbd
Coachwork: tbd
Joined Skoolie.net about a week ago and have been reading your conversion thread like a book I can't put down. Love the conversion... particularly the quality and attention to detail - such a gem. I live nearby, so I'll keep an eye out for you on the road!

You've inspired me to start looking for my own project and wonder if you could help point me in the right direction on two topics you mention in your thread: (1) anything you hear about when crown buses might be available from school districts and (2) resources to inspect a bus when purchasing.

Thanks and enjoy your Crown!
Ryan_jorgensen 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
Starting My Conversion Journey Mark Antony Wray Conversion General Discussions 26 10-28-2014 11:41 PM
1988 Bluebird tailgating/nascar conversion garbemi Skoolie Conversion Projects 34 05-14-2012 02:42 PM
1988 Ward School Bus Camper Conversion Sleeps 5 Steve Classifieds | Buy, Sell, Swap 0 05-02-2011 10:28 AM
1988 school bus gutted ready for conversion neegee Classifieds | Buy, Sell, Swap 1 04-11-2009 11:01 PM
Conversion begins on an '86 GMC Carpenter bus! msharps Skoolie Conversion Projects 6 09-05-2006 01:33 AM

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 01:13 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.