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Old 10-19-2007, 08:39 PM   #311
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Thanks! You are clearly no slouch with roof-raising yourself, Abbott, so I think we have a Competition on our hands!

Worked on the heater today, in preparation for next week's trip. Last year we made that trip with no heat at all (in my first bus, "Old #35"), and there were complaints.

I was NOT IMPRESSED with the heater blow in Millicent either, so I investigated. I figured I needed a blower motor.
Turns out that... the main heater in Millicent -- the one in the dash -- has a filter in the air intake. Much like a furnace filter in a house. Except this one was more like a sheet of plywood -- dirtiest filter I have ever seen! The frame for the filter gave me the impression it might rattle in its mount, so I tossed the whole thing. (I hate rattles.) Wow, now that heater blows! The filter is in the corner by the door. Two screws remove the cover, and just pull the filter out.
The other two heaters have been removed for now, but this one will do the job now that air actually goes thru it!
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Old 11-22-2007, 09:01 PM   #312
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Whoa -- I have neglected my duties....
I "need" to report that Millicent made a flawless 1000 mile round trip around the October 27 weekend.

The heater worked fine, but we kept getting engine fumes inside, so we need to seal gaps and otherwise manage air flow. It wasn't bad enough for me to notice, but a couple of the others said they noticed. The theory is that exhaust is being drawn into the bus and forward by having windows open near the front -- the sides near the front being a low pressure area. So I'm thinking of a "ram air" intake in the front, to pressurize the interior a little. But it should help just to get all the holes and gaps in the body sealed -- there are still giant openings next to the tail gate.

A few squeeks and rattles in the sheet metal also, but she runs like a Swiss watch!

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Old 11-22-2007, 09:07 PM   #313
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

Quote:
Originally Posted by Elliot Naess

So I'm thinking of a "ram air" intake in the front, to pressurize the interior a little.
My bus actually has something similar to what I believe you are describing. There is a roof vent in the front that has a flapper door in it. Fresh air can come in, but it will close should there be a backdraft of any type.
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Old 11-22-2007, 09:30 PM   #314
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Hmmm.... Millicent also has a small roof vent near the front. I'll take a closer look at it. But I think we are dealing with much larger volumes of air, to manage wayward exhaust fumes.

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Old 11-22-2007, 10:57 PM   #315
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

How about just rerouting the exhaust to a different spot? That seems like it might be an easier solution to me. There should be a fair amount of parallel airflow off to the sides so perhaps a side exit exhaust is in order along with an inspection to make sure you don't have any leaks anywhere.

Hmm...25 foot long chrome sidepipes....
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Old 11-23-2007, 12:17 AM   #316
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Way ahead of you!

The current exhaust outlet is on the left, in front of the rear tires -- smack where the sewer tank outlet goes. So I'm thinking of running the exhaust pipe out on the right, up the outside, and rearward along the roof. (The pipe begins on the right, so I would be eliminating the cross over -- not adding one.) I might even eliminate the muffler, since a looooooong pipe provides extra noise reduction. The problem with this idea is that the outside "stack" may be too wide for The Law. So I'm thinking of fabricating an oval pipe -- just two or three inches thick but wide enough to equal a four inch round pipe in flow capacity.

See what the brain comes up with when it has nothing to do but steer an eighteen wheeler all over the western states for 19 days straight!!!
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Old 11-23-2007, 07:14 AM   #317
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

welcome back, elliot.

i know what you mean about that low pressure thing. my toyota sunrader does the same thing, cept it ain't exhaust gases i was sucking in. Instead the black tant vent became an air inlet. not much fun. there was a two part fix. first, i found that leaving the regular cab windows up and opening the triangle shaped vent windows all the way caused the ram air effect you speak of. the second thing we did was install one of them windvane looking things on the black tank vent which completely eliminated the problem. why don't car makers use those little vent windows anymore. they are handy.

i am certain that with your fabricatring skills you could rig up something similar to make millicent look like dumbo. as for the exhaust routing, i think that is your best bet. it would be a shame though, having a big ole sewer pipe on the outside ruining millie's graceful lines. what about one that runs up through the bus? or is that dangerous/illegal/dumb?

how about air intakes on millicent's fivehead? sorry, but that thing's too big to be a forehead.
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Old 11-23-2007, 09:42 AM   #318
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Hi Pete! Yes, we are thinking along the same lines with the air flow. Glad you figured your problem out. My RV toilet supposedly closes tightly so fumes cannot back up, but I'll definitely use a "windvane" on the vent.

I have thought of running the exhaust pipe in a "chimney" thru the interior, but I didn't think of it for very long, because we need all the space we have inside. It will be fine on the outside, if I go that route.

The most important part of this, is probably to close all the holes in the body behind the exhaust outlet. There are countless bolt holes in the floor, and those big gaps at the tail gate that a cat could walk thru. So I think it will be fine once I get all done with that.

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Old 11-23-2007, 01:00 PM   #319
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

the black pipe vent cap is called the RV 360. You can get them for between 20-30 bucks. Definitely the best 30 bucks I've spent on that thing. Wish I didn't wait about 6000 miles into a 7000 mile trip to get it, though.

As for the pipe. why not just run the existing one all the way aft with a turnout right before the rear end. Going out the back probably wouldn't be a wise idea with that draw bridge you have out back.
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Old 11-23-2007, 01:39 PM   #320
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Thanks.
I'm not inclined to run the exhaust under the floor more than necessary, because I need that space for the various water tanks and related plumbing. That's why I may put the exhaust on the outside. All in due time.
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