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Old 05-28-2009, 12:47 AM   #15
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Tiffin Allegro Fred 34 TGA --Good Coach, Affordable,Great mileage and great factory service. If you decide later on to trade up to a bigger rig you sure won't have a problem selling it.
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Old 05-29-2009, 09:16 PM   #16
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I only have 10k miles on my 07 Tour with a Cummins 400HP. I've been told that when my engine gets up to 20k miles my mileage will improve.

So I'm still waiting and currently get 7mph with an admitted heavy foot...
I only got 6mph on my 2003 Suncruiser with a Workhorse chassis so in mathematical terms that is a 17% increase!
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Old 05-29-2009, 09:45 PM   #17
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On a recent trip from AZ to NJ going whatever the speed limit was, which was anything from 55 to 75, we averaged 10.48 for the 2800 miles. This is with a 8.3 L 325 HP Cummins in a 38 Foot Monaco.
We were not towing anything.
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Old 05-30-2009, 11:03 AM   #18
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Many thanks to all who replied. This is a great site and all this information will go a long way in helping me make up my mind. Thanks.
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Old 05-30-2009, 03:28 PM   #19
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I have a '02 Ultimate Advantage -- 36C -- actual length 36' 10" with the 350 HP ISC Cummins. Just made a round trip to Myrtle Beach (total of 700 miles) and fairly level run. I set the speed at 68 MPH and averaged 10.1 MPG for the trip. This included running the generator for the air conditioning. The rig has a little over 32,000 miles on it. New tires (Michelin ZXR -- 275X80X22.5 running at 100 in the front and 120 in the dual rears). Hope this gives you some info to work with.
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Old 05-30-2009, 05:20 PM   #20
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Our 34 footer with the ISBXT 350HP version has 12.3 MPG listed on the digital monitoring system readout, this is total for a little over 14K miles. Most mileage is towing something negotiating the mountain driving of the Pacific Northwest and its annual pilgramrage to AZ.

Do not be intimidated by the short wheel base story, that came from the short wheel base gas motorhomes which had a large rear overhang. If you look at a short wheel based DP the coach is more centered over the wheelbase than on an equivalent front engine gasser, therefore you do not have that porposing problem.

Don't rule out the Newmar Ventana 34' coaches, excellent choice for a "shorty".

Spike
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Old 05-30-2009, 11:37 PM   #21
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We have a 40 ft. HR with a 400 Cummins ISL. With the toad and under 60 mph we get around 9 mpg. A little less or a little more. Over 60mph it goes down fast. We went from Yuma to Phoenix when we first got it and only got 6 mpg. Of course we were driving at 80 mph all the way.
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Old 07-02-2009, 08:26 AM   #22
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A shocker:

For those who live on the flatlands, I'll offer the following:

Drag is = 1/2 * p * v^2 * Cd * A where:

p = 0.0023
V = velocity in feet per second
Cd = coefficient of drag ~ 0.8 for a big flat MH front (1.0 is flat plate)
A = area in square feet ~ 10 * 8.5 or 85 ft. square. for a MH

@ 50 MPH ~= 420 lb.
With a 10 mph headwind =~605 lb.
and for a 20 mph headwind =~ 824 lb.; nearly double.
With a 20 mph tailwind =~ 150 lb (accounts for some of the "liars")

Granted, there is rolling resistance, but it pales by comparison with drag. I'll also concede that weight is a major factor, but primarily in the hills or where acceleration is common.

Just my 2 cents worth,

Ernie
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Old 07-02-2009, 09:37 AM   #23
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We have had our '09 Meridian 34Y for about 3 months and have about 4200 miles on it. Previous had a 2000 Adventurer 32. I wish I would have moved to a short diesel earlier. The quiet while travelling is awesome. Trip from here (CO) to San Diego was about 9 - 10 mpg. Recent trip with hills and 7000 - 9000 ft elevation was 8.5. Hills were wonderful, no more Ford engine screaming at 4300 rpm. BTW we pull a Wrangler.

About the short diesel, our Meridian handles better than our Adventurer did. Does drive like a sports car. At first, a little road wander, but after deflate to about 96 lbs, handled like a dream.

Now, if we could get all those warrenty items fixed!

Nick Dienes
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Old 07-02-2009, 12:53 PM   #24
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Someone please save me at least ONE Journey 34Y. I'm lusting.....
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Old 07-03-2009, 03:53 AM   #25
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Quote:
Originally Posted by Ernie n Tara View Post
A shocker:

For those who live on the flatlands, I'll offer the following:

Drag is = 1/2 * p * v^2 * Cd * A where:

p = 0.0023
V = velocity in feet per second
Cd = coefficient of drag ~ 0.8 for a big flat MH front (1.0 is flat plate)
A = area in square feet ~ 10 * 8.5 or 85 ft. square. for a MH

@ 50 MPH ~= 420 lb.
With a 10 mph headwind =~605 lb.
and for a 20 mph headwind =~ 824 lb.; nearly double.
With a 20 mph tailwind =~ 150 lb (accounts for some of the "liars")

Granted, there is rolling resistance, but it pales by comparison with drag. I'll also concede that weight is a major factor, but primarily in the hills or where acceleration is common.

Just my 2 cents worth,

Ernie
And all this time I thought Drag = clothing typical of one sex worn by a person of the opposite sex.
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Old 07-03-2009, 11:42 AM   #26
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...kinda like Pi is not 3.1415... but rather crust plus filling...

MMMMMM
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Old 07-03-2009, 11:57 AM   #27
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Old 07-04-2009, 12:52 AM   #28
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40foot 400 ISL....I set the cruise inbetween the torque and HPO peak....1750rpm 69mph...8.75mpg

YMMV
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