Archive for June, 2016

What can I tow?

G.R. White thinks tow ratings are overrated. This is despite efforts like the Society of Automotive Engineers (SAE) J2807 tow-rating standard.

Alongside power, economy and payload, trailering ratings are the Holy Grail of light truck marketing. However, despite recently adopted Society of Automotive Engineers (SAE) standards that put everyone on the same footing, the value of tow ratings is almost irrelevant in the real world.

There’s only one way to know what your pickup can tow, and it involves a trip to the scales, knowledge of what Gross Combined Weight Rating (GCWR), GVWR and Gross Axle Weight Rating (GAWR) are and how to calculate it all. Sure, the salesman is correct when they say your truck could pull this or that, but will they be in court or the service drive with you if something goes wrong?

The problem is that measures like in the J2807 standard have carefully specified conditions and assumptions and the actual usage may or may not reflect those conditions and assumptions. White also runs afoul of the measurement problem in his suggested solution as well. J2807 is an attempt at a s usability measure determined by actual performance evaluation. Weight ratings are engineering specifications that are estimated from design and materials considerations. A key item that should raise a red flag is when White refers to the legal system as the only time that argument has any merit is in cases of gross negligence.

Of course, you do not want to abuse the engineering specifications for your rig but you do need to be aware of their source. GAWR and wheel and tire ratings, for example, are close to individual component specific and that means they need careful attention. GVWR is more vague as it is about the vehicle as a system of parts. GCWR is even less precise as it depends upon assumptions about frontal wind area and other factors that depend upon specific circumstances. It also pays to keep in mind that, as engineering specifications, these ratings have a safety margin built in and there are also usually conditions and assumptions considered that can be manipulated for special circumstances. Speed and temperature are two of those conditions and assumptions that can be manipulated to adjust ratings, for instance. Sometimes, like for tires, these conditions are actually specified.

If you remember a family RV experience as a kid back in the 50’s or 60’s, you will recall a family sedan or station wagon with a 100-200 hp engine and a three speed transmission towing a trailer weighing maybe a ton or so. Downshifting on nearly any grade was to be expected and their wasn’t much in the way of creature comforts such as air conditioning or even bucket seats. These days, the tow vehicle is an SUV or pickup truck with nearly double the power of that old sedan and a transmission with double the gears, too. The trailer likely ways four tons or more. People seem to get irritated if their automatic transmission downshifts out of overdrive going up freeway grades and turning off the AC as suggested on I15 going East of Baker is not a consideration.

Yes, it’s prudent to make sure your rig is competent and capable before you buy but people also learn from experience. You find a tow vehicle and a trailer that fits your needs and is comfortable for your RV experience. The choice isn’t a permanent one as your needs, interests, and preferences will change over time. Equipment also keeps getting better, too.

Take care. Drive safe.

 

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An update on the motion of our regional representative to remove WBCCI affiliation with the SNU:

SNU members and friends,

Keep in mind that there will be no change in SNU operations or planned activities from any WBCCI decision. 

It is the WBCCI that is at risk as its decision will be about whether or not its Constitution and Bylaws mean what they say and whether or not the SNU represents its purposes and activities as represented to the state of Ohio and the IRS. This is why a page on _Questions to consider if you value WBCCI_ has been posted on the SNU website. See the index page for WBCCI Governance.

If you value the WBCCI, it is time to examine this case of its behavior and to make a stand – speak your voice – about what it is doing, how it functions and what should be done to make it a healthier and more vital organization.

Correspondence and presentations from WBCCI members and officials and other information has been added to the website to provide background and depth for the current case. More is added as it is found. Be an informed member of the organization and do your part to make WBCCI an organization that upholds its legacy and purpose; an organization where we can take pride in our membership.

Also don’t forget! Next week is the rally at Hickison Petroglyph Recreation Area – camping, with friends, in our Airstreams, to enjoy and learn about the special nature of the Eastern Slope of the Sierra and the Great Basin. This is also Amateur Radio Field Day weekend so it will be a good time for members with ham radio licenses to exercise their emergency communications skills, too.

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SNU HQ

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Don’t buy blind

Steve Lehto says Don’t Buy An RV! – Lehto’s Law Ep. 45 in an 18 minute Youtube video. He’s a consumer protection lawyer and has lots of sad tales to tell.

Published on Aug 19, 2015 — Why you shouldn’t buy an RV – or what you should know before you do. Recreation Vehicles are very different from cars when it comes to how the law protects you.

His point is that an RV is a complex collection of many systems put together by folks under a lot of pressure and often bought by people who don’t really know what they are getting into. Automotive Lemon Laws and consumer protections are not as stringent for RV’s and the risks are significant.

Caveat Emptor (wikipedia) applies. Know what you think you are buying. Check to see that what you think you are buying is most likely what you are paying for. And know the RV lifestyle needs and requirements related to the particular RV you are buying. Expect things to break or not work as you expect and know what to do when that happens.

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