49 Pete log load

On a tandem,tandem? 421k seems a bit much. Never less its a hell of a load.

 

Those tires solid rubber?

The weight is crazy but a quick search seems to confirm it.

2010.54.12507 | OMCA COLLECTIONS

 

I think the load weight is over the top. It's a little bit BS.

Ive hauled export logs in container before out of a cut forest near Reading and a couple big ones grosses me out in weight. With that in mind and a ruler against that photograph I would estimate maybe 200,000 gross. But no more than that.

It will take a engineer who understands weight to foot density of that and working with a 25 foot length plus about a 16 foot width to come up with a probable gross weight expressed in cubic volume. Looks to be about 16 high.

So 7000 cubic foot?

I checked my three numbers in guess against a 40 foot high cube container (CBM excluded) and came out to 2500 or so Cubic foot so... that more or less napkin validates my estimate.

IF I think in container blocks 71000 max per box (40 foot, with 63000 or so in it) it's going to come out to about 3 containers worth this would be my defense to weight at about 180000 for the wood load. Truck is another 18,000 total. right at 200,000.

I think solid rubber tires were tried in the mid 1800's and found to be rather poor wheels in bikes etc. Wood was a better wheel. Anyway tires for modern purposes probably got changed during world war two time period when rubber was cut off by the enemy

I refuse to accept that you can load like that onto a air tire. Heavy hauls would have to chime in and say taint so or yes way....

Thta's probably why freight when expressed in cubic blocks of volume is much easier for those who otherwise would be somewhat challenged by the logistics of all this. (Childrens blocks, A B C etc.)

 

~23k lbs of weight on each tire (421k ÷ 18 tires) seems a bit far fetched to me. Still an impressive load nonetheless.

 

For what it's worth, I did a quick calculation.

If the diameters were 7, 8, and 9 ft and the length 40ft, that would be a volume of 1540 + 2010 + 2545 = 6095 cu ft

Now I have to admit that I know nothing about wood, so I had to google the density of Redwood
(it is Redwood according to the link @tinytim posted) and found that american redwood has a density of 28 lbs per cu ft.

6095 cu ft x 28 = 170660 lbs.

 

After reading the specs of this truck in the few paragrahps below the photo in the link... I'd say thus truck could handle the pull... The tires we're probably on the verge of blowout... But talk about big rubber, 1400x24!!! And water cooled trailer brakes!!! I'm not too sure of the number of gears in the 2 boxes, but I'm going to guess at least 15 gears... 15 very short gears, given the top speed of 30 mph. This is proof that its not all about HP... But gearing...

 

I'd bet that density is for DRY redwood... These would have been fresh cut GREEN redwood... I'm not too familiar with redwood specifically but with other woods its not a stretch to double the weight when its green compared to dry.