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Old 10-18-2010, 11:08 AM   #1
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Origin of Sunline Model Numbers

Here's a question. Is it known just how Sunline chose model numbers? My 2499 for example. I see no particular corrilation to that number and my Sunnies specs or size...what was it all about?

Bob
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Old 10-18-2010, 01:30 PM   #2
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OH this is a good one for Jon Sunline Fan
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Old 10-18-2010, 05:22 PM   #3
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Hmm, quite a question, but here goes...

I don't know the exact answer, but here's what I know. Keep in mind this only applies to this series of model numbers which existed from 1983 to 2007.

With your 2499, the number is mostly marketing. Indeed the 2499 is anything but 24', but it is considered that. The first two digits usually indicate the length. Sunline was a fairly conservative company (probably the most in the industry I'm told), so it was rare if the number deviated much from the actual length. It appears to me that when the number was generated in the prototype process, it usually didn't change, though the coach can slightly. If they find something doesn't work, say a toilet doesn't have enough room to sit on, they can add a few inches here or there and the trailer will grow, but since it is already established in the market, they wouldn't want to change the number.

A perfect example of this is the 2363. When it was first put on the market in 1990 (converted from the 2263/2463), it was 23'2". By 2007, it grew to 24'4", and the layout is almost identical. With the 2499, it started out at 25'11", so it's hard to say why it began as the 2499, but if I had to make a guess, I'd say they started out with either a front bed turned sideways, a shorter sofa from the 74", or both.

The second one-or-two digits in the model number (depending or not if it is an SR or not) will be a specific floorplan designation. I have yet to really figure out what the story is with the SR model numbers, it seems they just picked it somewhat at random. Such as the 286SR, it started out as a deviation of the 280SR, which was originally 28'. However, with the changes, the 286 became 29'10".

With the non-slide model numbers, they started out representing what features the floorplan had. I'm not sure how they chose these or how they began to choose the ones for single floorplans. A good example of the number representation is the 2260 series. Starting early on, they had many different options for this basic model, which has a front very similar to a 2363 but with a half dinette instead of the chair. They had the 2260, 2261, 2262, 2263, 2264, 2265, and 2266 over the years, though it really started out as the 2260 and 2261. These meant:

-60: Rear triple bed setup
-61: Rear corner double bed, front facing
-62: Rear twin beds
-63: Rear island bed, side facing
-64: Rear quad bunks
-65: Rear ODS double bunks/DS lounge-sofa
-66: Rear twin lounge-sofas

Those same designations continued for the 24' series, which seemed no different in general appearance except for a small pantry on the wall cabinet right inside the door on the side of the refrigerator. This added length is noticeable outside from the refrigerator access panel next to the main entry door. On the 22', it is almost right next to the door, whereas the 24' is about a foot back.

They also used similar designations but using "50" instead of "60". The 50 series would apply to models like the 2050-2054.

Through the years, the 61/51 through the 63/53 would continue to be produced. There were a few years in the 1990s that they actually did call models like the 2363 and 2653 with twin beds the 2362 and 2652. I still usually do anyway for the years when everything was a 2363 or 2653 because they are built so differently that I like to keep them separated. There are coaches with twins that I can't call differently, like the 2499, because they never had a name for them.

So basically when the last digit is changed from a 0 to a 1 and so on, the plan is modified from the original. There's examples where there were many less revisions, like the 1750 and 1751. These would have originated as 17.5' units and the 1751 is a modified version of the 1750. Basically a stretched 1550, they simply reversed the location of the sofa and dinette in the 1751 from the location in the 1750, with a few modifications of course.

Of course in some cases, they did the same thing to the 2250 (moved the sofa and dinette) and it turned out to be a real winner where eventually the 2250 was dropped in favor of the 2251. But since it was known that way, they didn't change the model number.

So regarding your 2499, the 99 seemed to be created for the rear double chair models. The 2199, 2299, and 2499 all had two rear chairs. The 289SR was the same way, which may be why it got a 9 as the digit of choice, and it probably became a 28 because there is already a 299SR (which I'm not sure why is named that way)

Also, a 70 seemed to usually indicate a bunk model, and a 71 would be a deviation of it. This didn't stay true in recent years though (the 2570).

For the pre-1983 coaches, they are a very different story. They usually did take the true length and followed it with a alpha code. Two digit for TT and four digit for TC. They are defined in many different areas, I've got most of them memorized so if you wanted to know one, it would probably be quicker to ask me than look it up. Forget the truck campers though, I've yet to learn what those codes mean. I can probably figure out most of the fifth wheel codes, but I haven't memorized those either because of both lack of documentation and lack of applicable units now to make it worthwhile.

Hopefully that makes some sense. If you have any questions, feel free to post 'em.

Jon
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Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR
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Old 10-18-2010, 07:02 PM   #4
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Jon......'ed and actually very !

You are true to your screen name!!!

H'mm the 99 was rear chair? Never new that. Well where does the T310SR fit?? It has 2 rear chairs and happens to be 31' 10"? I know they only made it for 2 model years and really do not know why only 2 years but it seemed to defy the numbering system other then the length. The coach that replaced it, the rear living area SR was the T-289SR and that fits with the 2 rear chairs...except the length was 29'3"??

Maybe someday we will know the mystery but you have brought us a lot closer, THANKS!!!

John
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Old 10-18-2010, 07:11 PM   #5
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I just knew Job would give us the answers!!!!!
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Old 10-18-2010, 07:36 PM   #6
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Quote:
Originally Posted by JohnB View Post
Jon......'ed and actually very !

You are true to your screen name!!!

H'mm the 99 was rear chair? Never new that. Well where does the T310SR fit?? It has 2 rear chairs and happens to be 31' 10"? I know they only made it for 2 model years and really do not know why only 2 years but it seemed to defy the numbering system other then the length. The coach that replaced it, the rear living area SR was the T-289SR and that fits with the 2 rear chairs...except the length was 29'3"??

Maybe someday we will know the mystery but you have brought us a lot closer, THANKS!!!

John
Well the 99...hold on....

I just realized, the 2299 was a rear couch, not a rear chair. But since it seemed to originate from the 2199, that could be why the name came about.

I didn't look much up for that last post, just sort of rambled off the top of my head. I think the only thing I looked up was exactly what the 65 and 66 meant, as there aren't many of them around for me to put a picture with the number. The 99 thing was one of those things I came up with as sort of an analogy to the theme here, but I don't have any documentation to back it up.

Yes, the 310SR is certainly an exception to the 9 theme, not sure why. I guess they didn't want a 319SR and since all the >30' SRTT's have even model numbers (300SR, 310SR, 320SR, 330SR, 340SR, 360SR), they must have wanted to stay with that theme, then leaving in between for fifth wheels. Lets see, from memory, the 300SR is basically a 3060 with a slide (and low profile), the 330SR is a stretched 280SR double slide, and it seems like the 340SR was a stretched 267 or something...I remember the sliding patio door was up toward the front. Then of course the 360 is the one I could never figure out why it's the way it is with the triple bunks and the dinette table in front of the bedroom door.

Jon
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2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9473.8 (as of 6/18/21)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR
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