Is 10 MPG Possible with a Fully Loaded (80K gross) 5 Axle Truck?

Never trust anecdotal evidence.
Driveline loses =10%
Fraction of driveline losses due to hub bearings=10%
Reduction in hub bearing friction due to coated bearings=50% (charitably)
Net reduction in friction=.05%
Gain in mpg by using coated WB (5MPG Truck)=.25 mpg
Twenty five one-hundreths of a mpg!!
Please-save your money.

 

See these articles for driveline losses:
http://www.goodyear.com/truck/pdf/radialretserv/Retread_S9_V.pdf
http://www.fueleconomy.gov/feg/atv.shtml
http://www.tut.fi/plastics/tyreschool/moduulit/moduuli_8/hypertext_1/3/3_1.html

As to the percent of this due to the hub bearings. try removing your tire and spinning the driveline(in neutral of course). then remove the hub bearing and spin the driveline. I highly doubt it is even 10% easier.

Ceramic bearings reduce bearing friction 70%(google it) and, according to micro blue, ceramic bearings offer greater reductions in friction than coated polished bearings.

What personal, financial, or other relationship, do you have with MicoBlue or its principals?

 

10% of what ? I assume you mean 10% of fuel energy is to over come drive line loses.
Is this what you mean?
Please clarify so that we are sure what it is you are saying.

What are the factors in the drive line that make up the remaining 90% of loses generated by the drive line?

As I interpret this you are claiming that wheel bearings only account for 1% of total frictional loses.Can you give me a bit of an idea where the other 99% comes from?

I'm not trying to be a smart ### or looking for an argument.
Just trying to fully understand your point.

You do realize that that for every 1% you reduce loses you will get about 2,9% increase in fuel mileage.
Based on a 35% fuel efficient truck.
What that means is a truck that uses 65% of fuel energy to overcome all loses and the 35% to propel the truck.
The 1% freed up energy is 1 over 35% increase and not 1 over 100% thus giving about 2,9% fuel mileage increase.

 

You all need to figure out that the SPEED is a biggest factor here. All your BS talk about losses comes from assumption of very low speed of the vehicle. Try driving normal Highway speed (like 70 mph) and all of sudden all your percentage losses get... slashed by half (at least) as aerodynamic losses grow exponentially with the rising speed.

You could invest million dollars to built super-duper efficient truck but then.. you would have to drive it 34 mph to prove the improvements makes any sense. Then you have to think hard how to make money with that pile of expensive crap, because the only possible application would be garbage truck hahahahaa

Dice, you are socialist, don't you? I bet you believe someone should give you big fat grant money so you can keep playing with that BS "science" - you are such a smartaxx !!!

 

You don't know how to to the right of the decimal point

 

If you had been following dice's thread you would know he has cut back his speed so you have no argument once again,

Dice; I have come across this fool before, his name he says is Jazda Polska , he is a complete idiot! Self opinionated and really doesn't have a clue what he's talking about! Our paths have crossed on another thread, myself and the other contributers had to chat by private message so as to not put up with his #####!

What you are doing is real "science" a science that can benefit us all, please don't let fools like this put you off, this industry needs guys like you! Any body that doesn't agree with him he will call socialist! He hasn't a clue what that means but if u want to follow the scania r730 thread you will see what I mean, in fact I followed a lot of his contributions in a number of threads and they're all the same, massive ego combined with no education,lack of intelligence, racism and no grasp of reality, so the best action to take is to ignore this twit and continue with your excellent service

 

You did great! True commie way! Why don't you start a secret party against me now? Maybe you could even get Obama involved in your scheme, he could get you troops - so you could carpet-bomb California to get rid of that bad guy Polska Jazda, you bunch of sissies buahahaha