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Old 07-03-2014, 06:32 PM   #15
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Note that ghaynes and I have ProPrides and high tongue weights...
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Old 07-04-2014, 06:36 AM   #16
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I started a thread called "Calculating Tongue Weight at the CAT Scales" .
Can you provide a link please?
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Old 07-04-2014, 07:14 AM   #17
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Can you provide a link please?
http://www.airforums.com/forums/f464...es-105930.html

Hope that works...was never good at links in this app...
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Old 07-04-2014, 07:43 AM   #18
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Originally Posted by SteveSueMac View Post
Note that ghaynes and I have ProPrides and high tongue weights...
Remember, not all, of PP nor HAHA installed hardware is calculated in tongue weight. It is all calculated in receiver weight...plus the stinger.
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Old 07-04-2014, 07:51 AM   #19
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Thanks SteveSueMac.
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Old 07-04-2014, 07:57 AM   #20
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We have a 2014 31' Classic model 30 with an Airstream catalog tongue weight of 733 pounds, empty weight of 7,365 pounds and a GVW of 10,000 pounds. The actual label at the factory said the trailer weight was 7,133 pounds (we omitted the two twin mattresses as we had goon ones from Rocky Mountain Mattresses awaiting the trailer's arrival).

Here are the weights at the Cat Scales where I weighed the rig and then detached from the trailer and crossed the scales again. This was before loading the truck and trailer with the camping gear. I have two sets of four wheel scales that generated the individual wheel weights the next day. The ProPride hitch was attached to the trailer and the stinger was left in the truck for the weighing.

The trailer tongue weight was also increased by four 92 pound Lifeline batteries mounted in a custom stainless steel battery box between the front of the trailer skin and the propane tanks as well as a much heavier Magnum MS 2812 inverter under the front sofa. We also have eight 100 watt solar panels on the roof. The original battery box is housing the hydraulic brake pump for the disc brake conversion.
Attached Files
File Type: pdf Classic scale results 29APR2014.pdf (32.8 KB, 156 views)
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Old 07-04-2014, 12:26 PM   #21
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Originally Posted by dznf0g View Post

Remember, not all, of PP nor HAHA installed hardware is calculated in tongue weight. It is all calculated in receiver weight...plus the stinger.
Thanks dznf0g - that's always confusing to me. Do you have an "explanation for dummies" on this concept? Clearly, 100% of the PP weight goes somewhere. I believe (from memory not my manual) the "hitch weight" on the 27FB Flying Cloud was 791# (call it 800 for simplicity) empty. It also said it was 5800# dry weight from the factory but fully loaded for camping I'm at 5800-5880 depending on the day I weigh it (multiple times, always fully loaded, always in that range). So I assumed the 200# or so of PP counted toward tongue weight getting me to 1000 and the balance must be the portion of "stuff" we carry in front of the axles?

A layman's explanation would be so helpful!! :-)
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Old 07-04-2014, 12:37 PM   #22
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My '06 Safari 25 FB with a Propride and stinger.... tongue weight was 1050# on a Shurline scale. Trailer is 6280# with propane, a few gallons of water and food.
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Old 07-04-2014, 12:52 PM   #23
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My TW as shown above also included the Ha Ha and stinger.
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Old 07-04-2014, 02:13 PM   #24
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Quote:
Originally Posted by SteveSueMac View Post
Thanks dznf0g - that's always confusing to me. Do you have an "explanation for dummies" on this concept? Clearly, 100% of the PP weight goes somewhere. I believe (from memory not my manual) the "hitch weight" on the 27FB Flying Cloud was 791# (call it 800 for simplicity) empty. It also said it was 5800# dry weight from the factory but fully loaded for camping I'm at 5800-5880 depending on the day I weigh it (multiple times, always fully loaded, always in that range). So I assumed the 200# or so of PP counted toward tongue weight getting me to 1000 and the balance must be the portion of "stuff" we carry in front of the axles?

A layman's explanation would be so helpful!! :-)
Don't think of it as disappearing weight. It is just assigning the weight where it belongs.
Tongue weight is a trailer spec indicating the load that the tongue is designed to handle
Receiver weight is the weight that the receiver is designed to handle.

Would an owner of a Reese or Eq install the head into the coupler before weighing the tongue? Of course not. The hitch head is not a load on the tongue (but is on the receiver) but, rather the coupler rests on the hitch head at a weight equal to the actual trailer tongue weight.

Just because a PP or HAHA is permanently mounted to the coupler doesn't change the above example. When the PPP is hitched up the tongue weight rests on the ball.

So, that makes just taking a scale reading of the PPP loaded tongue artificially high.

To determine the trailer tongue load I subtract 125 pounds.

Logic: (from memory here) My HAHA weighs 190 pounds - stinger at 20#=170

Since the bars are supported at one end by the tongue and the HAHA head at the other, I include 50% of their weight (10# each) as tongue weight. Also the struts are the same as the spring bars at 10# each X 50%

170# - 10# -10# = 150#

The jacks and strut brackets weight 25#, leaving 125# hanging out on the end of the coupler, which is not tongue weight, BUT IS RECEIVER WEIGHT.

So when I measure tongue weight on the scale with the PPP stuff all on the A frame, I subtract that 125#s from the scale reading.

BUT! to verify I am OK on receiver weight I add it all back in. This way I have met AS's spec AND the receiver/vehicle spec.

Make sense, or have I mucked it all up for you?

Don't get hung up on the math...I have it on a spreadsheet somewhere as I actually weighed the HAHA components, but the bottom line is all of the jacks and strut brackets + 50% of the spring bars and struts ARE tongue weight. None of the head/box or stinger and the other 50% of the bars and struts are tongue weight.
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Old 07-04-2014, 03:17 PM   #25
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1988 25' Excella. When hitched and loaded to travel there is 5600 lbs on the axles and 800 lbs added to the truck. 800 lb load bars with enough weight transfer so that the truck is 160 lbs light on the front when hitched. 2500 Dodge Diesel. Sticker on the trailer says 6800 gross, 6300 axles.
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Old 07-04-2014, 03:39 PM   #26
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The Sherline tongue weight scale arrived yesterday, today, I had a surprise....My 2001 30' Excella tongue weight was 775 pounds. I thought it would be more. The trailer was unloaded when I weighed the tongue.

I have weighed several times when we're loaded and ready to travel, and it always
comes in at 9,000 # (+ -). I've never weighed it empty, but I'm guessing that it would be somewhere around 8,100 to 8,300.

We'll be leaving in a few weeks for a couple month trip, I'll weigh before leaving when we're packed and ready to go.....I'm thinking, I'll be somewhere close to the 9 to 12% tongue weight.

If anyone out there has a 30 Excella, it would be interesting to know how we compare.

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Old 07-04-2014, 05:47 PM   #27
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I don't think you've mucked it up, dzn - but I'm still muddy...

My receiver says its limit is 1500# - so I'm comfortable there at a tongue weight of 1080. But my AS manual says tongue should not exceed 1000# (or in any case, the capacity of the receiver - which in my case is 50% above that figure...which sounds like a weasel clause...).

Are you saying you subtract some portion (125# for the Haha) of the calculated TW? If so, is that because you're saying those portions you deduct are carried by the RECEIVER and not on the BALL?

I'm not sure I really get this! :-/
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Old 07-04-2014, 05:52 PM   #28
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I don't think you've mucked it up, dzn - but I'm still muddy...

My receiver says its limit is 1500# - so I'm comfortable there at a tongue weight of 1080. But my AS manual says tongue should not exceed 1000# (or in any case, the capacity of the receiver - which in my case is 50% above that figure...which sounds like a weasel clause...).

Are you saying you subtract some portion (125# for the Haha) of the calculated TW? If so, is that because you're saying those portions you deduct are carried by the RECEIVER and not on the BALL?

I'm not sure I really get this! :-/
EXACTLY! In your hypothetical case, your AS tongue weight is actually 955#s..and you comply with AS spec. Some might not see the sense in this, but I like you went over 1000# when I added my bikes and Arvika rack. I had some serious recalculating and shuffling of gear to get back to 950#.

If you added the stinger weight to what you measured at 1080...then you'd have actual receiver weight. In my case, I have RockTamers in the figure as well.
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