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 > Your search for posts made by '4x4ord' found 518 matches.

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  Subject Author Date Posted Forum
RE: Obesity in America

That make no sense ... when you calculate BMI for a male, 180 lbs and 5'11 shows as top scale of normal weight. At 5'11 and 185, overweight!!! Any athlete - walker, or hiker, or swimmer, physically fit male will weight 200-210 easily and at 5'11 will show well into the overweight and only one point from obese. Franco Harris 6'2 230 lbs and Walter Payton 5'10 and 200 - both show only ONE scale point from obese, for example. I'd love someone to point out the obese molecules in those two examples. :) Then tell them face 2 face they are obese :) :) I'll dial the EMT for you :) Statistics and data are numbers, not real information. Muscle mass weights more than fat mass. So, muscular men and women will weigh more than equal mass in fat men and women. BMI is not a very useful number in determining overweight or obesity. I agree that the BMI index is not going to be accurate for all but a lean 5’11 male can be quite muscular at 180 lbs and I would think most 5’11 males at 200 lbs could stand to loose 20lbs..
4x4ord 04/20/21 11:39am Around the Campfire
RE: Truck Question

^^^ I can understand your reasoning but it is a little different than mine. The deciding line for me is 1/2 ton vs heavy duty. I’d buy a gasoline powered 1/2 ton if it could meet my towing needs. If a 1/2 ton doesn’t meet my needs the next step for me is 1 ton SRW diesel.
4x4ord 04/19/21 04:19am Tow Vehicles
RE: F 250 vs Ram 2500

I kinda think the Ford guys should buy F350s and the Ram guys should buy 3500s. I don't see the point in anybody buying a F250 or 2500 series truck.
4x4ord 04/18/21 12:02pm Tow Vehicles
RE: F350 SRW Enough Truck

What's the difference? Don't know. Ford won't tell anyone. All we know is that it is rated for 7230lbs and the others are not. What makes the AXLE unsuitable? Probably nothing. Most of these axles from their respective component manufacturers are rated to 10,000lbs gross. However, as you well know, there is more than just an axle at play here. Springs. Frame. Tires. There may or may not be differences there. Don't know. Ford still isn't talking. All we know is that they're willing to extend the warranty for 7230 if you buy the 7230 axle. Yes, I get your "Just shove a chunk of well casing between the axle and frame, and load 'er down, it's all good!" attitude. I'd agree with you if the OP was looking at anything besides a brand new truck. When you can get the truck from the factory built for the job, why would you buy a lesser truck and immediately start putting aftermarket load assistance devices on it? You can figure out the difference. You just have to spend a little time figuring it out. You're correct though, it is not in the axle. But they still offer srw trucks with 17" wheels and we all know you can't buy a normal 17" tire with more than a 3200lb load rating. My attitude is exactly opposite of what you said though (although, I'll admit to doing similar things, maybe, more than once, lol). It is one of education and my attempt to dispell the plethora of Rvnet myths and misnomers and old "I remember when" logic. Cheers bud! According to Ford: “Gross Axle Weight Rating is determined by the rated capacity of the minimum component of the axle system (axle, computer-selected springs, wheels, tires) of a specific vehicle. Front and rear GAWRs will, in all cases, sum to a number equal to or greater than the GVWR for the particular vehicle. Maximum loaded vehicle (including passengers, equipment and payload) cannot exceed the GVW rating or GAWR (front or rear).” In reality I don’t think the rated capacity of the axle is ever the minimum component of the axle system. Additionally there are times when the minimum component is simply the door sticker.
4x4ord 04/16/21 05:06am Tow Vehicles
RE: F350 SRW Enough Truck

" I'm "getting by" with a GM 8.1 pulling a 12,000+ fifth wheel & see no need for anything more. I tow from Calgary to Radium, BC through the Rockies at least twice a year. there are sections with 8% grade & I can maintain the speed limit even on those steep grades." NOT calling you a liar but over 20,000# up 8% grade at the speed limit I would assume around 60mph is honestly hard to believe. Maybe 4x4ord can chime in on this. You’re right Ron, a 20k lbs truck and rv doesn’t go up an 8% slope at 60 mph powered by a 340 hp engine. There is quite a climb coming out of Radium (this is probably the 8% grade being mentioned) but I think the speed limit might only be 90 km/hr. Even so, it takes roughly 100 hp to overcome the drag and rolling resistance of even a small 5ver at 90 km/hr. The rear wheel hp required for an 8k truck to overcome gravity while pulling a 12k trailer up an 8% grade is exactly 234.66 hp. So 335 hp is very close to the required power at the rear wheels. The 8.1 litre GM made as much as 340 peak crankshaft hp at 4200 rpm at sea level. So, maybe 260 hp rear wheel hp at 3000 ft elevation. So if the 8.1 litre had a gear to utilize 100% of hp it could pull that hill at about 42 mph.
4x4ord 04/15/21 08:59am Tow Vehicles
RE: F350 SRW Enough Truck

I can’t imagine why anyone would buy an F350 with a gas engine .... my way of thinking is if I need more than a half ton to pull it I’m going diesel, but, yes a F350 SRW 7.3 gas would work for that trailer. You’ll want the 7230 lb rear axle.
4x4ord 04/14/21 06:41am Tow Vehicles
RE: Towing capacity vs max cargo weight rating

The Ford number is probably based on the weakest link which may be the tires used, have you checked the ratings on your tires to see if they will support your new cargo capacity? I think you’re right .... it is based on the weakest link but I think the weakest link is probably the sticker:)
4x4ord 04/10/21 08:55am Tow Vehicles
RE: Towing capacity vs max cargo weight rating

Ford gives you the max cargo weight on your door sticker. They also give the maximum axle weight ratings on the door sticker. If you want to follow a maximum rating I’d recommend you ignore the maximum cargo capacity number and go by your maximum rear axle weight rating. I believe it is much safer to be heavy on the pin than light. You could be 1000 lbs over on your maximum rear axle rating and the only way you’d ever know it is over weight is by weighing your axle. If you’re too light, the trailer can be very unstable and dangerous.
4x4ord 04/10/21 04:09am Tow Vehicles
RE: 2022 F350 on order

Do you expect to see your new truck before the end of July? I’m considering ordering a 2022 and would like to time my order such that I see it towards the end of August. You've got that 2021 worn out already? :B No not worn out, but it seems like having new tires going into winter might not be a bad idea.... and the new one will come with nice clean engine oil.:)
4x4ord 04/09/21 07:10am Tow Vehicles
RE: Why do you Cummins guys want more gears

Delete
4x4ord 04/08/21 08:22pm Tow Vehicles
RE: Why do you Cummins guys want more gears

Would 3.73 gears give you what you want in 9nth? Or if you could get 3.0 gears you’d have the towing rpm you want in 8th. 3.0 x 4.6 would still provide you with an overall lower 1st gear ratio than your present 3.42 x 3.75. Then what is the point of having more gears if you can't take advantage of lower rear gear ratios? I have a 68RFE, not an Aisin. I also have 35 inch(technically 34.5) tires which are needed for obstacles at the ranch and deer lease to keep from bottoming out. The ideal towing rpm for me is between 1,600-1,900 rpm(preferably @ 1,800). I know your ideal rpm is different, but according to Cummins and the BSFC map of the 6.7L, that is the sweet spot depending on load. I think the BSFC map you posted shows the sweet spot (the dark blue) ranging from about 1500 to 2000 rpm and at a minimum of 600 Nm of torque output which I think indicated about 50% engine load. That map was for a less powerful engine and still would require working the engine hard enough to be down at about 9 mpg at 1800 rpm to enter into the sweet spot. At 1500 rpm you’d be working the engine hard enough to enter the sweet spot (700 Nm) while getting about 10.3 mpg @65 mph according to the map. So that BSFC map indicates that 1500 rpm would be a better towing rpm than 1800 for a 15k rv. (Which again is for a less powerful engine than the 2021). Nope, not for my year model. The sweet spot was between 1,600 and 1,900 according to my BSFC maps. It starts out at around 42% of max hp(145 hp of 250 max hp at 1,600 rpm) at this rpm, not 50%. Max hp for this range is around 250 hp at 1,600 rpm to 307 at 1,900 rpm. I believe you are thinking of the new models which is the efficiency series engine and not the high output which would have a smaller sweet spot so you really can't use it in your math since you don't have the map for the high output engine which has a lower compression ratio than the efficiency engine along with other variables. I am talking about a Bsfc map you posted awhile ago it was probably not for your truck and it certainly isn’t for the 1075 lbft torque engine.
4x4ord 04/08/21 09:10am Tow Vehicles
RE: Why do you Cummins guys want more gears

Would 3.73 gears give you what you want in 9nth? Or if you could get 3.0 gears you’d have the towing rpm you want in 8th. 3.0 x 4.6 would still provide you with an overall lower 1st gear ratio than your present 3.42 x 3.75. Then what is the point of having more gears if you can't take advantage of lower rear gear ratios? I have a 68RFE, not an Aisin. I also have 35 inch(technically 34.5) tires which are needed for obstacles at the ranch and deer lease to keep from bottoming out. The ideal towing rpm for me is between 1,600-1,900 rpm(preferably @ 1,800). I know your ideal rpm is different, but according to Cummins and the BSFC map of the 6.7L, that is the sweet spot depending on load. I think the BSFC map you posted shows the sweet spot (the dark blue) ranging from about 1500 to 2000 rpm and at a minimum of 600 Nm of torque output which I think indicated about 50% engine load. That map was for a less powerful engine and still would require working the engine hard enough to be down at about 9 mpg at 1800 rpm to enter into the sweet spot. At 1500 rpm you’d be working the engine hard enough to enter the sweet spot (700 Nm) while getting about 10.3 mpg @65 mph according to the map. So that BSFC map indicates that 1500 rpm would be a better towing rpm than 1800 for a 15k rv. (Which again is for a less powerful engine than the 2021).
4x4ord 04/08/21 07:19am Tow Vehicles
RE: Why do you Cummins guys want more gears

The ideal rpm range for the Cummins to be at towing a typical 15k fiver down a flat section of highway at 65 mph is between 1500 and 1700 rpm. I think 3:31 gears would work excellent. Why at a lower RPM instead of at the peak torque? The 2021 Cummins makes 1075 lbft of torque @1800 rpm. If you were going to work it at 70% engine load it would be very efficient at 1800 rpm. At 70% engine load it would be making about 260 hp. It would also be burning about 12 gallons of fuel per hour. If you were towing at 65 mph while burning 12 gallons per hour you’d be getting 5.3 mpg. Even at 50% engine load it might be quite efficient but even 50% load at 65 mph works out to 7.5 mpg. I’m guessing the Cummins would get more like 10 mpg towing a typical 15 k rv down the highway at 65 mph. Under light load conditions like that it will get a little better fuel economy at lower rpm as well as provide a nicer quieter towing experience.
4x4ord 04/08/21 06:40am Tow Vehicles
RE: Why do you Cummins guys want more gears

The ideal rpm range for the Cummins to be at towing a typical 15k fiver down a flat section of highway at 65 mph is between 1500 and 1700 rpm. I think 3:31 gears would work excellent.
4x4ord 04/08/21 01:24am Tow Vehicles
RE: Why do you Cummins guys want more gears

Would 3.73 gears give you what you want in 9nth? Or if you could get 3.0 gears you’d have the towing rpm you want in 8th. 3.0 x 4.6 would still provide you with an overall lower 1st gear ratio than your present 3.42 x 3.75.
4x4ord 04/07/21 07:38am Tow Vehicles
RE: Why do you Cummins guys want more gears

If Ram offered a 10 speed with the same gear ratios as Ford’s 10 speed, what would you want for a final drive rear axle ratio? https://i.imgur.com/Is5r1QXl.png https://i.imgur.com/MuYXft8l.png
4x4ord 04/07/21 05:01am Tow Vehicles
RE: Why do you Cummins guys want more gears

This is about all I got left in me for this thread...:Z QUITTER!!! Ya really, what kind of Dog are you. Here we are right on the verge of going down a rabbit hole and you’re going to put your tail between your legs and go home?
4x4ord 04/06/21 02:38pm Tow Vehicles
RE: Why do you Cummins guys want more gears

^^^^If the 10 speed is responsible for that then you should be able to show a 2021 Cummins getting spanked by a stock 10 speed Duramax .... I think you’ll come up empty handed. The Duramax lacks torque to compete with the Cummins The Cummins lacks HP and gears to keep up with the Duramax.... but, you're right the Cummins has torque. With 1075 lbft of torque, more gears is of little value, so the lower HP Cummins is very comparable to the higher power Duramax with more gears.
4x4ord 04/05/21 09:23pm Tow Vehicles
RE: 5th wheel hitches

I had purchased the Anderson hitch to replace my B&W 18000 hitch to tow my new 5er that grosses out at 21K. Before I could get it out of the box I saw the Max Pin weight was only 3500 lbs. The pin weight of my 5th wheel is 4300 lbs. Had to go to a Reese With the factory pucks, B&W has a hitch rated for a 6250 lb pin and 25000 lb gross trailer weight.
4x4ord 04/05/21 07:04pm Fifth-Wheels
RE: Why do you Cummins guys want more gears

^^^Peak torque to the rear wheels at full throttle would mean the CVT would adjust to keep the engine at 2800 rpm where it makes peak hp and it still wouldn’t keep up to the Powerstroke. I-6 vs V-8 is a race is no contest, the V-8 will win most of the time due to a shorter stroke and less rotating mass. When we bought our RAMs(three of them) it was to tow trailers not race. Typically a truck that can accelerate faster while towing can also tow easier with less drama. Acceleration is just one metric to measure towing performance. It kind of depends what you mean by 'drama". The 2021 Powerstroke/10 speed is definitely going to get to the top of the hill 1st vs the 2021 Cummins, but to do so, it might drop 4 gears, then pick up a gear and drop it one more time. The Cummins, on the other hand, might drop its two overdrive gears and settle in and pull .... slowly accelerating just a bit where the hill levels out and digging back in when it needs to.
4x4ord 04/05/21 06:49pm Tow Vehicles
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