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Old 11-14-2013, 10:46 AM   #1
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How long is too long for a gasser?

You all have been great responding to my other questions! Thanks so much! I am learning a lot and also discovering new questions to ask.

So, here is the next:

How long is too long for a gasser? What length of gasser do you have, size of coach, and how does it work for you?

I have read there is a ratio of hp to length to be maintained to be safe; 100 hp to 1 foot in length. Some say this is for gassers, others say it holds true for both.

I confess I am drooling over the new Adventurer 38Q- love that floorplan! (Winnebago Motorhomes - 2014 Adventurer). I see they have a heavier chassis, but my concern is that the Ford V10 engine will struggle to pull this size coach.

Anyone have one yet? Something similar? What do you all think?

My thanks for your patience and help,

Lindsay
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Old 11-14-2013, 10:52 AM   #2
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I have a 1999 mountain aire 37.5 v10 45000 run great has not been a problem pulling just returned from Michigan I-77 n.c ,va wv ohio and little bit going up not bad really
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Old 11-14-2013, 10:54 AM   #3
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I have heard 10 hp for each 1000 lbs of CGVW. To me, makes more sense than just length.
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Old 11-14-2013, 11:09 AM   #4
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Originally Posted by CampDaven View Post
I have heard 10 hp for each 1000 lbs of CGVW. To me, makes more sense than just length.
Ahhhh... How much are you really moving as opposed to guessing... So if the GCVW is 30,000, the engine should have at least 300 hp? (30[K]*10=300) Is that right? If so, the Ford V10 at 356hp (or so) should be fine, correct?

Is there someplace I can find this documented to show my other half?

Thanks,

Lindsay
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Old 11-14-2013, 11:59 AM   #5
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We have a 2003 Adventurer 38G with the 310 hp V-10. We tow a Jeep Cherokee and have no problem with power.
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Old 11-14-2013, 12:05 PM   #6
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There are many 39+ foot long RV's on gas chassis that move right down the road.

The current Ford F53 top-of-the-line has a 26,000lb GVWR and 30K GCWR...that's a lot of RV when converting to length.

Our 37.3 foot long Outlaw (W24/8.1L gas/Allison 6 speed) is a joy to drive and we tow a 3500lb dingy.

I would offer that as soon as you reach 40' in length, the RV's weight will reach the maximum point that the current gas engines available can pull. I just hope Spartan comes out with the EXTOL gas chassis...Ford needs some good competition:
Spartan Chassis

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Old 11-14-2013, 06:48 PM   #7
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I'm 38' 11" long according to Winnebago's specs.

My Suncruiser 38R handles perfectly with no modifications. I'm on the Workhorse W24 chassis

I'm on the right in the photo below. That's my friend's Suncruiser 37B motorhome parked behind me. He's about a foot shorter. He also has no handling or power problems. His motorhome is also built on the W24 chassis.

-Tom


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Old 11-14-2013, 07:24 PM   #8
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Quote:
Originally Posted by Tom N View Post
I'm 38' 11" long according to Winnebago's specs.

My Suncruiser 38R handles perfectly with no modifications. That's my friend's Suncruiser 37B motorhome parked behind me.

-Tom
Hi Tom,

Thanks for the photos and explanation! You do raise another question I have had. What is the difference between the Winnebago and Itasca? The new 38Q's for both look just the same. Is it like the difference between Chevy and GMC?

Thanks,

Lindsay
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Old 11-14-2013, 08:13 PM   #9
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I had a 2000 Winnebago 35u with a ford, and now a 2001 Winnebago 37g ford also. I can tell the 37g has more power (pi heads) than the 35u and can tell it drives better also. Its stock with 40.000 miles. The bad thing about the biggest gassers is the max weight on the chassis. Both of mine have 20,500 limits and don't have much extra payload. I think the longer and heavier your Moho is, the better the ride.
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Old 11-15-2013, 06:32 AM   #10
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I have a Suncruiser 37F and tow a Jeep Wrangler Unlimited, this is the heavier duty Ford Chassis.
Drives real nice, except for the mountain passes in Colorado.
In the mountains you will have to hit the 4-way flashers and take it easy but I think that is the case with most RVs.
The Winnebago - Itasca difference is like Chevrolet - GMC.
They will tell you that Itasca has more expensive fabrics.
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Old 11-15-2013, 06:46 AM   #11
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We have a 04 Newmar Mountain Aire (38') on the W22 Workhorse chassis 8.1 (340 hp) and Allison Transmission towing a 3400lb toad. It has more then enough power for our setup, is a dream to drive and very comfortable.
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Old 11-15-2013, 06:49 AM   #12
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With Itasca as its mastaff it gave Winnebago more market outlets. There is a little difference in accoutrements, but the chassis and body are the same. The small difference in gingerbread cost more bucks.
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Old 11-15-2013, 06:56 AM   #13
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Be aware of how much "overhang" the unit has. I refer to the length of coach body behind the rear wheels. The longer the overhang, the more susceptible to wind push from passing trucks (them passing you), and clearance problems on sharply angled entrances and exits to driveways etc.. This does not seem to be as much of a problem with the newer MH's. Some of the older units give the appearance of a teeter-totter.
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Old 11-15-2013, 07:05 AM   #14
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I never thought our gas powered MHs were short on hp. My brother is also happy with the V10 power on his 37 ft Fleetwood MH.

What I grew to despise was the long rear overhang that often would drag the hitch at the smallest incline.
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Old 11-15-2013, 07:12 AM   #15
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Length alone would not be my main concern. All chassis have a maximum load rating. While the chassis may handle the coach placed upon it, there may be little allowance for added weight, ie. things added in the storage bays and/or additional passengers.
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Old 11-15-2013, 07:15 AM   #16
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If you want to go long with power why not a diesel? They now come configured in front engine chassis also. Most prefer the DP for less noise. Choosing a product line on a good chassis is essential. I have always chosen Freightliner, Cummins and Alison. Reliability is historical.
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Old 11-15-2013, 08:12 AM   #17
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I would not buy a large gas chassis coach unless it was built on a 24,000 lbs or larger chassis.

My W24's CCC is 3239 lbs.

I weigh 23,200 lbs. loaded to go.

-Tom



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Old 11-15-2013, 08:24 AM   #18
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Our 37A Pace Arrow is nearly 38' measured. Ford v10. We tow ~5000 lb Jeep. We typically maintain 50mph on those long 7% grades. It's working but gets the job done. We specifically wanted a big gasser for the extra room and simple maintenance of the gas engine. We are once a month long weekenders with a couple week plus trip a year.
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Old 11-25-2013, 04:54 PM   #19
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Don't do it...get a diesel.

I have the 31W, great floorplan, with the same chassis as the others up to 38'. Just passed 9 years, been a good coach. But it sucks gas and the only thing I would replace it with would be a diesel - big block if possible. My sister's 43' Tour gets better mileage.

A couple of year old diesel is still ten times better than a new gasser.

Don't believe me? You'll see.
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Old 11-25-2013, 08:36 PM   #20
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Quote:
Originally Posted by RayAndLin View Post
You all have been great responding to my other questions! Thanks so much! I am learning a lot and also discovering new questions to ask. So, here is the next: How long is too long for a gasser? What length of gasser do you have, size of coach, and how does it work for you? I have read there is a ratio of hp to length to be maintained to be safe; 100 hp to 1 foot in length. Some say this is for gassers, others say it holds true for both. I confess I am drooling over the new Adventurer 38Q- love that floorplan! (Winnebago Motorhomes - 2014 Adventurer). I see they have a heavier chassis, but my concern is that the Ford V10 engine will struggle to pull this size coach. Anyone have one yet? Something similar? What do you all think? My thanks for your patience and help, Lindsay
We have a 2013 Adventurer 37F which has a 24,000 GVW. Your prospective 38Q has 26,000 GVW. We liked the 37F because of the king bed and the bath and 1/2. The Ford V10 has 362 hp and 457 torque. Less than a diesel but with less weight too than a diesel. A gas engine won't pull a mountain like a diesel but under normal, more level ground will be ok.

My RV salesman had a freeway on ramp test of acceleration when giving test drives to customers, gas vs. diesel More noise, but the Ford V10 was frequently the same speed and often faster at a given spot. I'm sure there are exceptions, and I am sure not close going up steep grades. I was able to drive about three or four under these circumstances.

Just drive a few and take your time deciding. The price point was about $100,000 different on the models we were comparing.
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