Trailer Weights in the Real World - Page 17 - Fiberglass RV


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Old 04-10-2013, 11:32 AM   #225
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I know when I was wondering what I could tow with my vehicle the real weights thread here was the most helpful resource I could find anywhere (along with my vehicle's owner's manual).

Perhaps we need a campaign to get everyone on this forum to weigh their trailers. With over 1500 CAT scales in the US and Canada there isn't much excuse not to.
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Old 04-11-2013, 07:55 PM   #226
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Perhaps we need a campaign to get everyone on this forum to weigh their trailers.
This was my whole point in creating this thread. I never wanted this to devolve into a discussion about the appropriateness of selection of the tow vehicle. I did not want to discourage people from using my service by publishing what could be viewed as incriminating information. I hoped people would be inspired to do their own weigh-ins. That is why I included data volunteered by those who had done so. I am truly sorry I got caught up in discussing the accurateness of of the reported data, and I apologize if I disparaged anyone's efforts. While I have the power as a moderator to make those posts disappear, I will leave them in place to remind me to behave better in future.
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Old 04-11-2013, 08:21 PM   #227
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We love you Scaleman You've provided information not found ANYWHERE ELSE on the WWW, targeting owners who need the info to be safe.

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Old 04-11-2013, 08:53 PM   #228
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Heck dont be sorry this has been great and it creates dialogues and motivation to expand your thinking. I think it was awesome and appreciated it.
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Old 04-11-2013, 09:00 PM   #229
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I couldn't care less about the tugs since there's too big a variety to be meaningful.

However...

I continue to hope that eventually model year of the weighed trailer will be included in the data. Back in the beginning, no one had black/grey tanks, microwave ovens, crockpots, air conditioners, generators, solar panels, and/or all the other amenities deemed so important by more recent users.

All that frou-frou adds up to significant poundage ...

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Old 04-11-2013, 10:21 PM   #230
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We love you Scaleman You've provided information not found ANYWHERE ELSE on the WWW, targeting owners who need the info to be safe.

bang on Donna!
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Old 04-14-2013, 01:46 AM   #231
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Mine will be weighed when it's done (empty first), I think it will be one of the heavier 19' scamps.
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Old 04-14-2013, 08:10 AM   #232
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Trailer Weights in the Real World

I know its been mentioned before in other threads but this will be on my bucket list when I'm ready to roll. After reading this thread I am understanding more of the importance of overall balance and treatment of the car/camper as a system. That tongue weight could always be a variable factor. IMO
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Old 04-21-2013, 05:51 PM   #233
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With Frederick's permission, I have posted a copy of the "Trailer Weights in the Real World" spreadsheet in .xls format for those that want to sort it for their own use. Clicking on the link will download a copy (currently a 33KB file). If additions are added to this thread, or when Frederick weighs more trailers, I'll update the spreadsheet.

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Old 04-23-2013, 06:53 PM   #234
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Is anybody aware of compiled real-world weights for dry, unloaded trailers?

These loaded weights make me think that Scamp may underreport their weights because they seem to consistently weigh more than comparable Casitas even though Casitas are supposed to be at least 200 pounds heavier.
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Old 04-23-2013, 07:47 PM   #235
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Is anybody aware of compiled real-world weights for dry, unloaded trailers?
I am not aware of such a compilation, and would not expect one. Frederick and his helpers have gone to significant effort to take advantage of the availability of trailers in camping condition as they arrive at rallies; I am not aware of a similar opportunity for empty trailers, as people don't generally make a practice of pulling them to events in this state.

Some travel trailer manufacturers are proud of their actual weight data, resulting from weighing each unit as it leaves the factory, complete with all factory-installed equipment and as actually constructed. I am not aware of any of the moulded fiberglass travel trailer manufacturers following this practice, although it would be interesting to see the data if any of them have been doing this.
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Old 04-23-2013, 07:49 PM   #236
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My math is rusty but it seems to me the error introduced by a few inch side-to-side difference is minimal. Assuming 4" of height difference and a 6' axle gives an angle of about 3 degrees. The sin function indicates that at 3 degrees, the weight differential would be 0.9986, in other words at most 1.4% error. Somebody ought to check me though, I could easily have messed up! Since the weighing method was pretty similar for all trailers, the error would be consistent and can be ignored I think.
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Old 04-23-2013, 07:51 PM   #237
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Sorry, I mispalced this reply, it was intended to be directed at an earlier discussion of the errors introduced by having only one wheel on a scale.

On the other post, thanks Brian P. One would need a lot of weights of loaded trailers to get some reasonable statistics as to which trailers are really lighter. It just appears from those I see posted that in general Casitas are the same or lighter weight than similar Scamps and that is counter to Scamps weight claims. Maybe Casitas are more accurate?
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Old 04-23-2013, 07:52 PM   #238
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Quote:
Originally Posted by semievolved View Post
These loaded weights make me think that Scamp may underreport their weights because they seem to consistently weigh more than comparable Casitas even though Casitas are supposed to be at least 200 pounds heavier.
Using Jon's handy Excel download and Excel's Pivot Table feature, I find:
Casita 13' averages (of 3): 2260 lb axle + 260 lb tongue = 2520 lb total
Scamp 13' averages (of 3): 1540 lb axle + 223 lb tongue = 1763 lb total

Casita 16' averages (of 3): 2460 lb axle + 260 lb tongue = 2700 lb total (of 3)
Scamp 16' averages (of 5): 2292 lb axle + 280 lb tongue = 2572 lb total
These sample sizes are so small that further distinguishing between sub-models (by floorplan and equipment) becomes an exercise of individual trailer comparison. On this basis, I don't see a trend for Scamps to be heavier.

There is no Scamp model which is directly comparable to the very numerous Casita 17' (almost a third of all weighings are of Casita 17's), and no Casita model which is directly comparable to a Scamp 19'.


As Frederick described in post #9 of this thread, the trailer are weighed with any weight distributing hitch (WDH) system disabled as the rig arrives at the campground, then the tongue weight is separately measured at the campsite. This is only way to get a trailer weight, separate from the tow vehicle weight, without requiring an additional weighing of the tow vehicle while it is still loaded just as it was on arrival.

Since some people will not run their rig over the scale - or move it at all - without the WDH in use, I suspect that the heaviest Casitas (especially those tongue-heavy 17' units) skip the weigh-in, biasing the results. This is only an educated guess; I have no specific evidence that this is happening... but if it is, it would lead to a lower average reported weight for the trailer models with the highest tongue weight, and a lower average reported tongue weight. This bias - if it exists - would not apply to fifth-wheel or Scamp 19' models, which do not use WDH systems despite high hitch weight.
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