Forum Discussion
25 Replies
- SailingOnExplorer1 - I've heard it is easier to back a longer wheelbase trailer; not more maneuverable, just easier to steer. I have no experience to judge that.
2 - If you're used to a bumper pull, be careful rounding corners: the FW will track inside the truck. I do have experience with this, unfortunately.
2 - When we moved from a 29' FW 11'2" high to a 31' FW 12'5" high and 1500# heavier, I thought we'd see MPG drop. In fact, the taller trailer gets about .5 MPG more, probably due to better streamlining of the front cap. - LantleyNomad
Arcamper wrote:
SabreCanuck wrote:
Curious why you wouldn't lower the 5th by adjusting the pin box? Picture appears you have a ton of room between 5th and truck rails.
Because it is sitting level and has never been a problem in the 5,000 miles we have pulled it in the last year. It's like I said before, anyone with these high profile trailers need to watch what they go under. Several of the campgrounds we have been to seem to care less about low branches and that does not mix well with a rubber roof. We have also seen some service station canopies with 13 foot clearance.
It's your dice and your dime, but if my rig were taller than 13'6" which is the federal standard. I would make some adjustments.
Frankly 5K miles is not a lot of miles in the grand scheme of things.
The risk is just not worth it. Hitting an overpass would be disastrous. - janegowestExplorerTravelnutz, your intelligence makes my head swim!! : )
- travelnutzExplorer IIThe terms/words full profile, mid profile, and low profile are meaningless. It's the actual measurement in inches or feet and inches both inside and out that actually count. Includes the front bedroom. Varies greatly between manufacturers and models of 5th wheels/TT's etc. We have had both high and low profile 5th wheels and could stand straight up and still have a good amount of air over my head on all of them. I'm 5'11" without shoes and about 6' with shoes on and still have plenty of air over my bean in our lowest profile 5th wheel owned.
I know for a fact that the Jayco Eagle HT model rear kitchen 5th wheel called lower profile have more than 6' of height in the front bedroom as we have been in them and sure noticed it. 147" (12'3") total exterior height over the A/C. Not even near hitting my head! Perhaps their idea is the lower profile HT models are more like other's mid profile units. Much of it has to do with the roof line design and where the AC unit is placed.
The full profile Eagle 293RKDS rear kitchen we were in has only a couple inches more height in the front bedroom and it was 155" exterior height over the A/C and had a quite different roofline design. That's 8" more of exterior height but only a couple inches more height in the bedroom walk around areas. However, a big difference in RV front aerodynamics which transfers to higher MPG's pulling the better aerodynamic design HT model.
As an automotive engineer, retired, the rolling resistance is a given constant regardless of speed driven but the air resistance squares itself over and over as speed driven higher than near 50 MPH increases. Also the suction pulling backward that's created behind the flat ended RV rear squares itself also with increasing speeds. This is the major reason why more tow vehicle engine power is required to go faster and of course that takes more fuel to produce the required power. Aerodynamics and it's effects (air flow resistance properties) is ultra important to increased fuel economy and efficiency and windage (frontal a side) effects and stability also. - VeebyesExplorer IIOf course everything is going to have a bearing. The height increases windage. The weight is load on the truck to tow & STOP. The length will test skill in getting into tight sites.
It is about finding balance. 7 - avvidclif1ExplorerFWIW your picture doesn't make it look level...
- ArcamperExplorer
SabreCanuck wrote:
Curious why you wouldn't lower the 5th by adjusting the pin box? Picture appears you have a ton of room between 5th and truck rails.
Because it is sitting level and has never been a problem in the 5,000 miles we have pulled it in the last year. It's like I said before, anyone with these high profile trailers need to watch what they go under. Several of the campgrounds we have been to seem to care less about low branches and that does not mix well with a rubber roof. We have also seen some service station canopies with 13 foot clearance. - SabreCanuckExplorer
Arcamper wrote:
Yep, it was right at 13' 5" until I added the roof top vent covers and that pushed it up to 13' 7" on the front one.
Curious why you wouldn't lower the 5th by adjusting the pin box? Picture appears you have a ton of room between 5th and truck rails. - ArcamperExplorer
ACZL wrote:
Are you sure about your new coach's height at 13'7"? Max semi height w/o a permit is 13'6".
Yep, it was right at 13' 5" until I added the roof top vent covers and that pushed it up to 13' 7" on the front one. - ACZLExplorer
Arcamper wrote:
I have done both. From our 2007 Laredo at 11' 6" tall and 32 feet long.
To our new Montana at 13' 7" tall and 38 feet long.
The statement above about having enough truck has been very true in my case because I have a lot of stability in any condition. The big difference I see going from one to the other is you really have to watch for low tree limbs and every thing else that you go under. You just get used to it.
By the way the height difference in the bedroom of the Montana is much better and we would never go back to anything smaller.Moderator edit to re-size pictures to forum recommended limit of 640px maximum width
Are you sure about your new coach's height at 13'7"? Max semi height w/o a permit is 13'6".
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