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First trip to the CAT scales

4.9K views 12 replies 6 participants last post by  Packard8  
#1 · (Edited)
Like all of us, we worried about tongue weight, especially since we have tongue heavy trailer, the Intech Sol Horizon, so today we went to the CAT scales!

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We've been traveling with full water tanks to rear load the trailer some to keep the tongue weight down. I have a crane scale setup which I've covered before, so we know when we're legal (and safe!)

But I've never been to the CAT scales before, so today we did just that. The trailer was dry, unloaded, because I wanted a baseline. Here's what we got.

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Lets run some numbers...

Towing:

Steer - 2,240
Drive - 3,040
Trailer - 3,020
Gross - 8,500

Subaru Only:

Steer - 2,680
Drive - 2,240
Trailer - 0
Gross - 4,920

Total Trailer Weight = Gross Towing - Gross Not Towing = 8,500 - 4,920 = 3,580
Tongue Weight = Total Trailer Weight - Trailer Axle = 3,580 - 3,020 = 560

The trailer was completely emptied and had the following options: external kitchen, stove and fridge, power awning, power tongue jack, dual propane, probably 80% full. Fresh we empty, black was as empty as a flat campsite lets you. (We find raising the other side helps with emptying it, but we were trying to beat a storm with gusts to 45mph so we didn't do that.) Additons are the Hughes internal surge protector, 2 Sicrocco fans, and 206Ah LiFePO4 Lithium Iron Phosphate Battery Pack, which, if I recall, weighed about 10lbs more than the lead acid battery it replaced.

This is good! It is good because it means my driveway crane scale got 550lbs right before we drove to the CAT scale. So I can always measure tongue weight at home!

So the good news is that we can be safe and legal, the bad news is that we have to load carefully. The next step is to weigh all the stuff we took out of the trailer and make sure we don't exceed the trailer's 4,000lb weight limit. That's not impossible, but we need to leave all the cast iron cookware and my anvil collection at home.
 
Discussion starter · #5 ·
you are nowhere near 5K but you are over the tongue weight with empty trailer, which is not good news
The good news is that it shows my driveway crane setup is accurate, so now I can tune tongue weight and I'm well under the trailer's 4,000 max weight so I can add weight to the trailer to tune it. For example, running full fresh water tanks will lower the tongue weight, or we put 2 bikes on the rear, same thing. It also means that I don't need to disconnect for re-weighs since I can measure tongue weight at home.

We had tongue weight down to 457lbs last camping trip, so it is possible, now we just have to tune it.

You can download the free CAT Scale app and just drive up on the scale, connect and it will send you the data (and the bill).
Almost... now you must give a credit card number when you create the account. The nice thing is you get a PDF of the weighings and a history online.

Using the app is super easy, it even knew I was there for a re-weigh.

Just be sure to scope out the CAT scale with satellite view before you go if you want to disconnect, arriving with a plan is better.
 
Discussion starter · #8 ·
We had tongue weight down to 457lbs last camping trip, so it is possible, now we just have to tune it.
As a test, a just put the bike rack and bikes on the back of the trailer. So I added 103lb to to the total trailer weight but dropped 65lbs off the tongue.

It is all about balance.