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| So I have to haul wheat Friday with my new to me semi, 01 IH 9900i and 40' Trailstar end dump with two axles plus a 3rd that's a lift. I have a weight gauge in the cab for the tractor that shows in pounds and two air gauges hooked into the air suspension on the back two axles plus a gauge on the air bags for the lift axle.
Any one have a rough idea how many PSI the gauges on the trailer should show to be legal, in Canada I'm legal for 55,000kg (121,000lbs). I have heard not to go over 60psi, is that just for that trailer (not mine) or is that a general rule of thumb? Trailer doesn't have a chart for axle weights vs suspension pressure.
I know I won't know much for my truck specifically untill I take in the first load on Friday but would like to have a bit of an idea before hand.
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| I'm having a hard time figuring if you can go over weight with that trailer. Guessing you are 15000kg empty leaves you room for 1500 bushel.
On the truck tandems and trailer tandems we haul with 74PSI when loaded to give us the 17000kg for the axles. Tridems in the 66lbs.
Ontario you are allowed a little more for tandems I think, 18000?
When we load the front of the trailer we go to 54psi on truck, then move to back of trailer and hope it all quits at 74 each. Now the drop axle I'm of no help for. |
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South Western Ontario, Canada | Are you sure about the 55Mt gross? I would get checked by the MTO before getting loaded.
As for air guage its hit n miss for getting weight correct.
This is the weight sticker for my 5 axle. Axle 1 and 5 are lifts and 2,3 and 4 are my mains.
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Sac & Story county IA | I have one suspension that is some over 60 psi to be 34,000 on the tandem. And another that is some over 70 psi for 34,000. Loading to 60 psi the first time sounds like a plan. Instead of one of those "$900 deals". |
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| I should maybe add my empty weight is right around 17,000kg. |
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Bethany, MO | Is that picture of your outfit? If that's corn, were you legal there? What did the gauges say on that load? A load of good wheat will be a little heavier than the same volume of good corn. I'd guess around 2 - 4000# more on a load like that. |
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SW Ont | Wheat and soys 60 lb/bu, corn 56 lb/bu
At 'standard' test weights:
1500bu wheat = 90,000lb
1500bu corn = 84,000lb
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SE MN | I'm pulling a 42' timpte hopper with a 9100 IH daycab empty at around 24,500 depending on fuel. I usually try for 67pounds on my trailer gauge and 64 or 65 on the truck when I'm all done but in order for these gauges to be accurate it takes a lot of trial and error and a consistent loading surface. I would not rely on the gauges if I was loading in a soft field. Also you need to figure it out for your truck. I have a friend that has a trailer with mini air ride and he will usually read up around 90 psi. |
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| bowtieighth - 3/4/2015 10:23
Is that picture of your outfit? If that's corn, were you legal there? What did the gauges say on that load? A load of good wheat will be a little heavier than the same volume of good corn. I'd guess around 2 - 4000# more on a load like that.
Yes, that's mine. That was 30% moisture grade 3 corn so it was light. But no, I was under my gross legal weight there. Also has just got the truck so I didn't have any gauges on the trailer.
Edited by Dave7060 3/4/2015 11:34
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Bethany, MO | What was the test weight on that load? How much under were you with it? If that volume weighed X and the wheat weighs Y, that's what you'd be grossing with wheat. Fill a trailer like that with corn, wheat and beans and you'll have the highest net weight with wheat and the lightest net weight with beans. |
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| For you fellow Ontario boys where do I find the rules for lift axels. I have a 4 axel end dump double/double meaning 2 lifts its a 97 without the permit anymore. I pull it with a day cab mostly from feild to farm but this spring I have a lot to deliver to the mill. Never been really worried about whiegh but what can I leagaly haul now with those out dated lifts without steers. Its a 40' trailer. Thanks |
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South Western Ontario, Canada | shanty - 3/4/2015 13:33
For you fellow Ontario boys where do I find the rules for lift axels. I have a 4 axel end dump double/double meaning 2 lifts its a 97 without the permit anymore. I pull it with a day cab mostly from feild to farm but this spring I have a lot to deliver to the mill. Never been really worried about whiegh but what can I leagaly haul now with those out dated lifts without steers. Its a 40' trailer. Thanks
E laws.
Zero weight allowance for out of date axles.
I'm good for 21Mt payload with our 2up,2down. Tight tandem. The trailer hasn't been out in years due to that. We are going to sell it as its no good without spif axles. |
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Near-north Ontario, French River | Have they changed the spiff rules? If not then he's still allowed 4500kg on each of those lifts. None steerable lifts haven't been outlawed, still perfectly legal to run you just take a 50% cut on the allowable weight for those axles... |
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Tri-State Area (WI, MN, IA) | Just spend $5K and get one of these systems. LOL
Way cool but $$$
http://loadjudge.com/ |
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South Western Ontario, Canada | Thud - 3/4/2015 15:21
Have they changed the spiff rules? If not then he's still allowed 4500kg on each of those lifts. None steerable lifts haven't been outlawed, still perfectly legal to run you just take a 50% cut on the allowable weight for those axles...
Way I was told by multiple officials is once the trailer is over 15 years old the axle is no longer eligible and isn't scaled against your gross weight.
The half weight is for between new to 15 years of age. Date of manufacturing not date of first service.
This is what and how I have been told the law was. Unless the guys in Putnam and in head office are wrong..... |
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| Need to be sitting level to judge accuracy from gauges really. |
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Judging semi weights by suspension pressure
