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Old 05-11-2014, 10:25 AM   #1
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Default 2007 Optima/Freightline Columbia/450 Mercedes

Hi Guys...



Need straight up on Optima 42'/Freightliner Columbia w/2 axle/Eaton 10 auto/450 Mercedes/10' 6" toy garage.

Acquiring to use as product demonstration vehicle for new manufacturer of large r/c scale model aircraft.

Aluminum Optima home touted to be highest quality/lowest maintenance with CAT Gen, twin air, elec kitchen, solar battery recharge, house and trk batteries seperate.

I see Freightliner as greatest benefit over the road service & annuals. What say you about drivability, typical mpg @ 65/70 mph.



Ed
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Old 05-12-2014, 09:09 AM   #2
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Looks like a very nice ride. I don't know to much about this chassis but you mentioned MPG. I can tell you that speed greatly effects mileage. Dad is a bus conversion guy. He was excited to get his Prevost with the 8V92 Detroit cranked up t0 450+ HP. He even called me on his first trip from IN to FL to tell me that he was passing cars while climbing Monteagle. He quickly discovered that flogging those horses cost him dearly in fuel. His coach would easily run 75mph all day. Dad found that backing off to about 60 made a big difference in fuel consumption and he got to where he was going almost as fast anyway.
P.S. I think that you have a good idea with the 10spd trans. Dad is putting one in his current Prevost project. It is a 45' coach and will be pushed by a 12.7 Detroit with a 10spd autoshift.
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Old 05-12-2014, 10:58 AM   #3
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Default Optima - AKA - Haulmark 330 MB450 - 43'~45'

Many manufacturers produce the same floorplan with differential in length for sake of redistributing the coach
arrangement or shortening garage. Empty garage and what appears is a troublesome rubber floor mat. Rear roll
up presents an issue...I will ask for suggestions as I post what I have targeted as "perfect". Listening to your
replies/wisdom will narrow my sharpened focus on what is "not" problematic.



Looking back into this space from outside rear shows the tail/lift gate, a huge advantage considering most
of where I will be flying will not be covered aside from pilot erected pop-up canopies within tightly confined
pit areas. For the sake of a dead fall safety measure I plant to place an vertical aluminum cylinder beneath
the lift when it is 6+ feet high. This as a safety measure to prevent collapse.


For comfort sake of lofted view of an event I will place a pop-up on the top side of the lift gate, secured
by leg placed in a rectangular channel, with pin slide through to constrain it. An onboard short aluminum
ladder will provide access to lift and canopy area.



Because my use is focused on giant scale aircraft I have many stowage options. For the most part I will
"cycle" through an inventory of aircraft, not taking more than four or five at any one time. The range of
wingspan can be between 10 and 16 feet. Over the years I have observed more than this draws too many
touch-feel incidents...
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Old 05-12-2014, 11:37 AM   #4
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Default What Was Planned Vs. What Is Being Planned



You can easily see advantage of Motor-Garage over my original plan of a Ford Expedition EL for my B-47E.
The Expedition depended greatly on suspended fuselage then placing removable wings and support items
along sides & behind front seats. Pop-up, etc would be carried on roof.



Garage interior for our use would offer typical storage of aircraft maintenance tools, drill press, grinder, &
minimum dedicated work space along a sidewall.



As you can see above, since most Motor-Garages are in support of an ATV or bikes there are several
found to be in full execution of OCD behavior...not half of which contained tools... much less anything
at all.

In the above photograph look at the forward overhead where what appears to be a railing turned onto
its side provides overhead stowage, and suspension for hanging... Hanging being the key word. If
hung, each item needs to be tethered to the left and right side to prevent excess motion. Fuselages
will be the item hung with nose or tail facing fore to after, or visa versa. This for larger fuselages with
removable wings placed in foam covered peg rack.

As for the B-47, it breaks down into a three piece fuselage fore to aft with wing attached from inboard
pylon to inboard pylon. Individual nacelle blades with power management systems slide out from each
pylon and stand into a vertical storage tray kept below in seperate storage away from vehicle interior.
LiPo batteries are kept in fire-proof storage exept when charging or installed for flight.
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Old 06-02-2014, 05:32 PM   #5
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Our 42' haulmark coach is a bit different (no garage), same motor, different trans....
We've got the Onan 10kw QD generator (and run it often while rolling down the road).


As AndyG says - your right foot can impact the mpg in a pricey manner.

I have the smart-shift 12spd (meritor) w/ the MBE 4000 (450hp, pre emissions / no EGR cooler).

I've seen as high as a little over 13 (blacksburg va to fort walton beach, via charlotte/atlanta/montgomery 131 & even had some generator run time when we slept in a rest area).

Ive seen as little is 8.9 (hot footing it in the mountains from Birmingham al to Winchester va).

CONSISTENTLY we score 9.9 (flat towing jeep wrangler) w/ generator running to keep the wife & old english sheep dog cool on our trips from houston tx - winchester va....and thats with the cruise set at 70
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Old 11-29-2014, 11:19 AM   #6
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I am blown away with the mileage you guys are getting. I stay in the hills and mountains in mine 95% of the time and I get 6 to 7 mpg in mine. When I gross 60k#'s or more I get down in the low 5's. I have my toe in the firewall most of the time and I run 75mph+ when conditions allow. I have tried driving slower just to see if it would make any difference and it was negligible. I wonder if the pre EGR Mercedes motors are that much more fuel efficient or is the just the weight of my usual set up? Mine runs well for 450HP and I change the fuel filters every 5k miles.
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Old 11-29-2014, 11:54 AM   #7
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non-interstate driving kills our mpg...the coach definitely does best on the interstate where we can let it stretch it's legs, short trips or local camp trips have produced less MPG (7.5).

your ton-age has to have an effect when you consider I'm 1/2 of your weight @32k heavily loaded (no wrangler/toad)
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Old 11-30-2014, 03:01 PM   #8
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I'm kind of confused about this? Did Flite-metal buy that Optima shown in the first post? The description of it seems a bit off. "Two axle" usually is referring to the drive axles. The picture surely shows a single screw. "Twin air?" Looks like only one up there as far as I can tell. But then later there are pictures of what appears to be the inside of a unfinished box truck. Did you not buy the Optima?
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Old 11-30-2014, 07:22 PM   #9
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I wonder if he is counting the steering axle as one and the drive axle as two? I only see one air on top also, and I think the picture of the empty box is just for illustration purposes?
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Old 03-21-2015, 11:08 AM   #10
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I have heard good stuff about the Volvo D13 with Ishift.Anyone running such a setup?What MPG.We are considering single axle poss lock rear.Mpg difference vs tandem?Thanks
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