W123 40 mpg goal : The Most Aerodynamic brick - Page 4 - PeachParts Mercedes-Benz Forum

#46 05-27-2008, 12:24 PM

Quote:

Originally Posted by vstech

yup, and the same 10K at 60 mph is 166.66666666666666666666666666667 hours... or 41.666666666666666666666666666667 more time...

Now I get it.

Tymbrymi · #47 05-27-2008, 02:19 PM

Quote:

Originally Posted by ForcedInduction

There is no way you are going to get a 35% gain in efficiency without some major bodywork and getting rid of the 617 for a 602.

Fixed that for you

#48 05-28-2008, 07:26 AM

Quote:

Originally Posted by Tymbrymi

Fixed that for you

Quote:

Originally Posted by ForcedInduction View Post
There is no way you are going to get a 35% gain in efficiency without some major bodywork and getting rid of the 617 for a 601.

I fixed your fix.

TylerH860 · #49 05-31-2008, 08:31 PM

I was watching CNN and this hypermiler was actually turning his car off while coasting off the highway. He was also pushing his car out of the driveway and gives the car a running start before he fires up the engine. I suppose if you had a manual transmission and some muscles...

bgkast · #50 05-31-2008, 08:40 PM

yeah, who needs power steering or brakes?

#51 05-31-2008, 10:43 PM

Quote:

Originally Posted by TylerH860

I was watching CNN and this hypermiler was actually turning his car off while coasting off the highway

That only shows he doesn't know how his car works. When a fuel injected car is coasting on the highway in gear it is not consuming any fuel since the computer stops the injections.

Hatterasguy · #52 05-31-2008, 10:51 PM

Quote:

Originally Posted by TylerH860

I was watching CNN and this hypermiler was actually turning his car off while coasting off the highway. He was also pushing his car out of the driveway and gives the car a running start before he fires up the engine. I suppose if you had a manual transmission and some muscles...

Some people get a little nuts, fuel ain't that expensive.

I spent more on booze last night than I spent on fuel last month.

turbobenz · #53 05-31-2008, 10:55 PM

Quote:

Originally Posted by TylerH860

I was watching CNN and this hypermiler was actually turning his car off while coasting off the highway. He was also pushing his car out of the driveway and gives the car a running start before he fires up the engine. I suppose if you had a manual transmission and some muscles...

or he can just ride a bicycle

Bio300TDTdriver · #54 06-01-2008, 12:14 AM

Quote:

Originally Posted by Craig

I drive some pretty long distances, In the last two months I drove from CO to GA to NC to CO and made two additional round trips from CO to NC. That's about 9-10K miles, so that speed difference would be about 30 hours out of my life.

Wow you could save a couple weeks a year by flying. Of course all those fancy airplanes have ABS, so that's not gonna work for you.

#55 06-01-2008, 12:22 AM

Quote:

Originally Posted by Bio300TDTdriver

Wow you could save a couple weeks a year by flying. Of course all those fancy airplanes have ABS, so that's not gonna work for you.

Been there, done that. Used to fly about 100K per year; it sucked before 9/11, now it's completely unbearable. I'm done standing in security lines and sleeping in airport terminals waiting for delayed flights. Besides, they won't let me drive.

awsrock · #56 06-01-2008, 01:04 AM

This hypermiler guy is nuts. Personally, I would never do that much just to achieve...whatever.

I remember reading that he parks at the top of parking lots to coast down, takes off ramps at 50 with he engine off..sounds like too much effort to me. He'll be surprised when his starter dies and he can't turn it back on in the middle of the highway! So much for honda reliability there!!! (sorry, i am biased against Honda)

TheDon · #57 06-01-2008, 01:06 AM

Quote:

Originally Posted by awsrock

This hypermiler guy is nuts. Personally, I would never do that much just to achieve...whatever.

I remember reading that he parks at the top of parking lots to coast down, takes off ramps at 50 with he engine off..sounds like too much effort to me. He'll be surprised when his starter dies and he can't turn it back on in the middle of the highway! So much for honda reliability there!!! (sorry, i am biased against Honda)

its called bumping the engine over without using a starter. It just like roll starting a car, which you never use a starter. duh

Johnson Chan · #58 06-01-2008, 01:20 AM

Quote:

Originally Posted by lutzTD

i think youre giving up too soon. i think with driving technique and a few changes you could get in the 33-35 MPG range and still have something safer than an econobox will offer. If you want to spend 10-15k for a VW TDI then payback will take a pretty long time.

Some of these guys are talking about removing bumpers and interior parts, I dont think safety is a factor

You might be safer in a econobox than in a w123 with no dashboard, no bumpers, no rearseats, etc.

t walgamuth · #59 06-01-2008, 08:27 AM

Quote:

Originally Posted by Craig

IMO, the most practical change would be to swap the differential. I'm still thinking about putting a 2.88 in mine; partially for mileage, but mostly to reduce the rpm at highway speeds. These cars were really geared for the 55 mph speed limit and they are just a little too buzzy at 75 mph.

I wouldn't bother with the 288, go for the 247, IMHO.

Tom W

1983/300CD · #60 06-01-2008, 08:38 AM

New differential and a nose cone.