MPG

[Jim Eh.]

I expect my mileage to be poor. Better when I drive with my wallet between my foot and the throttle pedal.

[buswarrior]

Out on the interstate, running Toronto to Arcadia, did it both ways:

at 70 mph, 6 mpg US

at 60 mph, 7 mpg US.

Anything involving city, down it goes from there.

happy coaching!
buswarrior

[pabusnut]

I think Uncle Ned said he gets 12!  (I might have the wrong guy)

6 MPG coming to a rally and 6 MPG leaving a rally for a total of 12 MPG

[uncle ned]

Steve  It is all in the numbers.  figures lie and lairs figure.

uncle ned

[Hard Headed Ken]

Just got back from Daytona last night pulling a 20 foot enclosed with 3 bikes inside at 68 MPH.

9.25 on the way down and 9 on the way back.

[TedCalvert]

Wow, Ken, that's great!

Probably that gearbox keeping the engine in the sweet spot has a LOT to do with your mpg?
I've lusted after self-shifting gearboxes since I first heard of them.  Took a short drive in a vanHool with ZF box and didn't realize it wasn't a slip-box until the owner told me.  Just felt like someone competent was shifting with clutch.  I guess that someone was 'Auto', lol 

Congratulations on a great improvement.

[TedCalvert]

Can one retrofit an Auto-shift to a mechanical 92 series?  It has air throttle, so if the tranny computer has something like a 0-10 volt output to run the throttle, that could be used to vary air pressure; or is it way more complicated?  Just thinking, may be too early for that!

[Hard Headed Ken]

3:30 something rear gives me about 1380 RPM at 68 MPH. I'm about 90% satisfied with the Ultrashift, red light to red light or stuck in a traffic jam it's a bit aggregating because it shifts so much.

Ken

[sledhead]

so if I am hearing right you are complaining about to many gears ! ....if I could only be so lucky 

dave

[Hard Headed Ken]

It really doesn't need all those gears because I'm only pulling about 40,000 lbs instead of the 80,000 it was designed to pull around. But yes, I'll take that over not enough gears.

Ken

[luvrbus]

The Allison TC -10 is making it's mark in the 10 speed world the drivers I speak with love that transmission. A food supplier here has 5 Internationals with the ISX 15 Cummins engines and 10 speed Allison the owner is claiming 1+ MPG better over the same truck and engine equipped with the Eaton.There you go Ken that will put you over 10mpg if it's true. It really is a nice transmission I wish I would have kept mine just to try it but the B500 does a good job for me behind the 60 series it's 7.3 mpg not bad for a 45 ft bus    

[Hard Headed Ken]

I don't think the TC 10 will fit, too long, diameter too large or something. I'd love have it in place of my Ultrashift  but I would need to change diff ratios to keep my RPMS's where they are now because top gear in the Allison is a little lower than the Eaton top gear. My goal is to always average 10 MPG or over and I still have 4 things left to try. Ceramic exhaust manifold and a conventional 14 liter turbo, larger injectors from the 630 HP 14 liter generator engine and a free flow exhaust system. I think it's possible, I'll just have to throw more money and time at it. Of course like most folks both of those are limited.

Ken

[luvrbus]

Kent (RIP) did a good job installing the M11 and B500 or it maybe a 10 speed I never looked in the 81 Prevost Kenny owns now I think he is over 10 mpg if Kenny would keep it under 75 mph but he likes to roll and roll it will

[Hard Headed Ken]

Yeah, an ISM common rail with a TC10 and the right diff ratio would be a sweet set up.

Ken

[AdamWalkup]

We run 3 MCI's with Eaton 10 speed auto shifts in our fleet, I like them if I am driving them myself, but can be difficult with different drivers.  I personally really love them in the mountains, always have the best gear.  When doing "regular" charter work with a good mix of city driving, we don't see a huge fuel mileage change over the B500's.  On a highly interstate long distance trip we see .75 to 1 mpg difference.  The big problem now is getting parts for the old auto shifts.