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04-12-2012, 11:04 AM
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#15
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
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Quote:
Originally Posted by Reddemab
Engine: Big Workhorse W22 Chassis, 340hp 8.1 Vortec, Allison 6 Speed Automatic Transmission with Grade Brake
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Length? And are you running w/a toad?
My '02 Itasca has blessed us w/ 7.3 MPG, pulling a Jeep Liberty 4 down, running at 62 MPH for 84,000 Miles.
As usual, YMMV.
__________________
Wretched excess is just barely enough.
2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
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04-12-2012, 08:38 PM
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#16
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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Quote:
Originally Posted by athuddriver
Is there much of a difference between the W24 with a 5 vs 6 speed Allison on average?
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Typically Yes there is. The W24 has a taller gear so it's going to use a bit more fuel. GCWR is 30K so you need more gear.
As regards the difference from 5 to 6 speeds the only difference is basically that 6th gear is .61 to 1 all else is basically the same. Getting a BIG motorhome to stay in 6th at times is challenging.
Every W-Series (except 16 & 18) from 2006 and up has 6 speeds.
Thank you for your service ... Thud Driver! 
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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05-03-2012, 09:49 PM
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#17
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Moderator Emeritus
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2012
Location: Lone Star State
Posts: 19,203
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This is our high points - Damon OutLaw (10.5 foot tall front end and angled roof is a bit more aerodynamic than many) - W22 8.1L 6Spd.
On our trip last year from Dallas, TX to SoCal, we got over 10MPG on the flatland in West TX and NM - No Toad.
On our Spring Break trip -> CA to OR trip we measured an overall average mileage at just over 8 - with Toad.
-Not bad- I feel, thanks to the climb (North and Southbound) over the 4100 foot Tejon Pass and 4300 foot Siskiyou Pass, plus 20-40 mph headwinds back home through the California Central Valley. In between the problem areas, the instant mileage readout was 11-14MPG!
Keep a light foot and don't use the cruise control on hills...let the speed climb and fall like the Big Rigs.
Like was said before, find a CostCo near your stops for discounted fuel.
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05-04-2012, 06:21 AM
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#18
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Registered User
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Oct 2010
Location: 8,600 feet elevation
Posts: 209
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If my memory serves me correct, the rear end gearing was also changed when the 6-speed Allison started with the 2006 model year.
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05-04-2012, 01:03 PM
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#19
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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Quote:
Originally Posted by MntDriver
If my memory serves me correct, the rear end gearing was also changed when the 6-speed Allison started with the 2006 model year. |
Allison 6-Speed gearing is 5.86 for 22.5 inch tires and 5.13 for 19.5" tires. I run a lean and mean 5.38. 
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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05-04-2012, 02:08 PM
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#20
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Senior Member
Workhorse Chassis Owner
Join Date: Oct 2007
Location: South Jersey
Posts: 1,083
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Quote:
Originally Posted by edgray
6.5 to 8.0 MPG depending on your weight and speed. Congrats on your purchase. Which chassis did you get?
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We get the same mileage as Ed with our 2006 W22, 05 chassis, 5 speed. 6.5 to 7.5 with toad, 7 to 8 without. Don't have a heavy foot, 61 to 63 MPH. When we are out traveling mountain areas our mileage will be tainted thou.
__________________
Kathy & George Zimm
Mickleton, NJ
2006 Coachman Epic & 2013 Chevy Equinox Toad
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05-04-2012, 03:23 PM
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#21
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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Quote:
Originally Posted by George Z
Don't have a heavy foot, 61 to 63 MPH.
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GZ, I resemble that remark!
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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05-04-2012, 07:25 PM
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#22
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Senior Member
Workhorse Chassis Owner
Join Date: May 2009
Location: Kansas City, MO./Pollock, LA.
Posts: 1,556
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I get 7.7 mpg average over the last 20k miles on my W20. Fast, Slow, Flat, hills and towing.
I subtract .69 gallons per hour of generator use. I know this is correct for my 5.5 Onan Marguis gold generator. One time I used the gen for 72 hours straight and then filled it up with 51 gallons. It took one gallon to get to and from gas station.
__________________
06 Hurricane 34FT WH W20 Chassis 8.1L 132K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, 735W Solar Morningstar MPPT-60, WG T4 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee
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05-05-2012, 06:07 AM
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#23
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Senior Member
Workhorse Chassis Owner
Join Date: Oct 2007
Location: South Jersey
Posts: 1,083
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This also effects your mileage readout
__________________
Kathy & George Zimm
Mickleton, NJ
2006 Coachman Epic & 2013 Chevy Equinox Toad
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05-05-2012, 06:28 AM
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#24
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Senior Member
Join Date: Mar 2011
Location: Conyers, GA
Posts: 649
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Quote:
Originally Posted by DriVer
Please also consider joining the Workhorse Chassis Motorhome Club. |
Where do you join?
__________________
Sandi
Loving My RV
2005 Dolphin 6355 LX WH24
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05-05-2012, 08:18 AM
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#25
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Senior Member
Join Date: Jun 2011
Location: Bradenton, Fl.
Posts: 725
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Quote:
Originally Posted by George Z
This also effects your mileage readout |
Great photo. 
__________________
Ray G.
ASE Master Med-Heavy Trucks
RVIA Certified
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05-05-2012, 09:36 AM
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#26
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Registered User
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Oct 2010
Location: 8,600 feet elevation
Posts: 209
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Quote:
Originally Posted by DriVer
Allison 6-Speed gearing is 5.86 for 22.5 inch tires and 5.13 for 19.5" tires. I run a lean and mean 5.38. |
Thanks! I knew the rear end gearing was higher for the 6-speed, but couldn't remember the number.
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05-05-2012, 10:14 AM
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#27
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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Quote:
Originally Posted by lenjen
Where do you join?
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Got ya coverd!
Come and see what they're up to .... 
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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05-06-2012, 12:04 AM
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#28
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Senior Member
Workhorse Chassis Owner
Join Date: Feb 2005
Location: Anderson, IN
Posts: 476
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lenjen,
You can contact the VP of Membership for the Workhorse Chassis Motorhome Club at lslaird1988@aol.com for more information about joining. It's a great club that has two rallies per year that are spread out over the country. The rallies have seminars presented by Workhorse service reps that are very informative and also give you someone to know in the service area.
The club website is WCMC website > Home .
Happy RVing,
Dave
__________________
2004 37B Adventurer, 8.1 WH, Ultrapower, DIY CAI, Henderson Track Bar, Tru Center, Koni FSD's, Roadmaster Even Brake, Scan Guage II, 180 Thermostat,
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