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Old 07-12-2019, 09:54 AM   #61
Cummins12V98
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The first two pics show WHY triple axle DRV will have much less pin weight.
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Old 07-12-2019, 10:31 AM   #62
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The first two pics show WHY triple axle DRV will have much less pin weight.
Less pin weight?
If the fulcrum is the front axle the 2 axle version should have less weight at the pin.
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Old 07-12-2019, 01:01 PM   #63
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Having had both 2 and 3 axle units I can assure you the 3 axle units have a much lower pin weight. My condolences to Mr. Folcrum.

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Old 07-12-2019, 01:39 PM   #64
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Originally Posted by Cummins12V98 View Post
The first two pics show WHY triple axle DRV will have much less pin weight.
Can you explain?


Suppose .....
The 2 axle and 3 axle are exactly the same layout and weight from the door forward.

Guesstimates here
Center of 2 axle's front axle to pin = 22'
Center of 3 axle's front axle to pin = 24'

If there was 10,000 pounds of weight from the door forward, how would that equal less weight on the pin with a longer distance with the 3 axle versus the 2 axle?
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Old 07-12-2019, 02:56 PM   #65
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Suppose all you want. I'm telling you what reality is.

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Old 07-12-2019, 06:29 PM   #66
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Distance from pin to center of front axle is MUCH closer on a triple axle.
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Old 07-12-2019, 06:39 PM   #67
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Distance from pin to center of front axle is MUCH closer on a triple axle.
Not comparing the Houston to the 39DBRS3
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Old 07-12-2019, 07:02 PM   #68
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IF the front axle is indeed the fulcrum, then there if more acreage behind it on the Houston then on the 39er, thus putting the fat guy on that end of the seesaw...and lifting the thin guy...triples have less pin weight normally.
What I would have liked is a 41' KSSB4 with 3 axles....
This depletes my knowledge of physics.
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Old 07-12-2019, 07:46 PM   #69
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Yes, with years of weighing Mobile Suites trailers, every 3 axle trailer had much lower pin weights than the 2 axle trailers did.
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Old 07-12-2019, 08:22 PM   #70
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Yes, with years of weighing Mobile Suites trailers, every 3 axle trailer had much lower pin weights than the 2 axle trailers did.
And what is “much lower” ?

At 22,000 pounds I have 4200 pin.
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Old 07-12-2019, 11:41 PM   #71
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I no longer have all the weigh sheets from all the actual weighs.
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Old 07-13-2019, 08:16 AM   #72
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My 44' 3 axle Santa Fe weighs in at 23,740 lbs with a pin of 3,620 lbs. Gross weight truck-trailer fully loaded with 2 people full of water & propane= 32,370 lbs.

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Old 07-13-2019, 09:31 AM   #73
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And how is that relative to my conversation comparing the Houston to the 39DBRS3 ?

And if you compare the Santa Fe to the Houston which are almost identical from the door forward, your lower pin weight could be why? Because the Santa Fe axles are farther forward then the Houston ?

Or maybe I have seen the wrong pictures of a Santa Fe
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Old 07-13-2019, 09:37 AM   #74
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Don't know why=don't care. You are the one who said a 3 axle would, should, have a higher pin weight. Just showing you are wrong. Live with it.

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Old 07-13-2019, 10:06 AM   #75
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Don't know why=don't care. You are the one who said a 3 axle would, should, have a higher pin weight. Just showing you are wrong. Live with it.

Bill
For the most part I have been just ignoring all your pompous, condescending comments for some time.
You may have been successful with your life and career but you obviously missed the DC book.

My conversation is based on two models.
You bring a third or more into the mix.
And we all know you bought 6 new DRV’s but I could care less, I only care about one DRV.

And since you don’t care or know, your santa fe axles are farther forward then the same sized Houston.
At least they are on current models. Explain the pin weight differences between those two 3 axle rigs.

3 axle Houston’s have a higher pin weight then 2 axle 39DBRS3’s That’s fact, not hearsay. .


And who is Mr. Folcrum anyway ?

Just showing you are wrong, live with it.
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Old 07-13-2019, 12:06 PM   #76
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Not comparing the Houston to the 39DBRS3
I know NOTHING about the models you mention, I was stating info based on the previous first two pics as an example of why a triple axle will have a lower percentage of pin weight compared to a double axle.
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Old 07-13-2019, 12:11 PM   #77
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And what is “much lower” ?

At 22,000 pounds I have 4200 pin.

You have 19% pin and MOST two axle DRV's loaded for full time living are well North of 20%. My RV 39TKSB3 weighs 23,000# and my pin of 5,750# is right at 25%.

My RV weighs 1,000# more than yours but my pin is 1,550# more than yours.
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