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Go Back   CleanMPG Forums » Hybrid Owners Community » 2004 - 2009 Toyota Prius II Hatch


2004 - 2009 Toyota Prius II Hatch Everything and anything relating to the Second Generation Toyota Prius Hatch.

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Mountain Turtle

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Old 03-25-2015, 06:00 PM
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Homeboymi Homeboymi is offline
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Vehicles: 2004 Toyota Solara 1993 Chevy Cavalier
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Mountain Turtle

I got behind a Prius coming down the mountain today. He was only doing 30-35 mph coasting down the hills and around the curves. My 93 Cavalier was coasting much faster even with the 5 speed in 4th gear. Normally, I coast around 40-50 on these hills and curves. His brake lights weren't on so how come he was coasting so slow?
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Old 03-25-2015, 06:17 PM
fuzzy fuzzy is offline
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Re: Mountain Turtle

He may have been in 'B' mode regenerative braking. The Prius has fewer 'downshift' choices than your 5 speed.
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Old 03-25-2015, 06:47 PM
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Homeboymi Homeboymi is offline
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Re: Mountain Turtle

Quote:
Originally Posted by fuzzy View Post
He may have been in 'B' mode regenerative braking. The Prius has fewer 'downshift' choices than your 5 speed.
Not very considerate to the people in the line of cars behind him. He even held his left arm out of the window like he was on a Sunday drive. No wonder there is "road rage". I got a good look at him when we got down the mountain and into town. Typical anus aperture with a big grin.
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Old 03-25-2015, 09:48 PM
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xcel xcel is online now
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Re: Mountain Turtle

Hi Homeboymi:

What were the PSLs on this San Diego mountain road with the curves?

Wayne
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Old 03-26-2015, 01:05 AM
fuzzy fuzzy is offline
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Re: Mountain Turtle

Quote:
Originally Posted by Homeboymi View Post
Not very considerate to the people in the line of cars behind him. He even held his left arm out of the window like he was on a Sunday drive. No wonder there is "road rage". I got a good look at him when we got down the mountain and into town. Typical anus aperture with a big grin.
Should I say the same about the guys descending the long steep Pikes Peak road in front of me in 2nd gear, at a speed lower than my Prius's B mode could get any meaningful engine braking, forcing me to use heavier braking than if I could have descended unimpeded?

No. It was a perfectly reasonable speed to prevent brake overheating in their particular cars. (That road even has a mandatory brake temperature checkpoint, and I witnessed another vehicle ushered over into the 30 minute brake cooling timeout zone.) It isn't their fault that different cars, such as mine, have different engine sizes / gearing / weight, thus have different reasonable descent speeds.
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Old 03-26-2015, 05:52 AM
EdwinTheMagnificent EdwinTheMagnificent is offline
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Re: Mountain Turtle

Does a guy who calls himself "Homeboy" even LOOK at speed limit signs ?

My own descent speeds are based on fear of getting a ticket. And as you know , there are NO hills in Illinois anyway. And certainly no hills combined with tight turns. I generally just go as fast as the car wants to and still maintain 60+ MPG.
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Old 03-26-2015, 11:27 AM
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Homeboymi Homeboymi is offline
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Re: Mountain Turtle

Quote:
Originally Posted by xcel View Post
Hi Homeboymi:

What were the PSLs on this San Diego mountain road with the curves?

Wayne
What are PSLs?
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Old 03-26-2015, 11:31 AM
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Homeboymi Homeboymi is offline
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Re: Mountain Turtle

Quote:
Originally Posted by fuzzy View Post
Should I say the same about the guys descending the long steep Pikes Peak road in front of me in 2nd gear, at a speed lower than my Prius's B mode could get any meaningful engine braking, forcing me to use heavier braking than if I could have descended unimpeded?

No. It was a perfectly reasonable speed to prevent brake overheating in their particular cars. (That road even has a mandatory brake temperature checkpoint, and I witnessed another vehicle ushered over into the 30 minute brake cooling timeout zone.) It isn't their fault that different cars, such as mine, have different engine sizes / gearing / weight, thus have different reasonable descent speeds.
This was clearly done intentionally. He had 15 cars behind him riding their brakes because he was going so slow for the conditions. I was just curious how you people can coast so slow and not use your brakes.
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Old 03-26-2015, 06:13 PM
phoebeisis phoebeisis is offline
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Re: Mountain Turtle

Hmmm
PSL Posted speed limit
BRAKING is POISON for a hyper miler-even forced regen braking is poison-he wasn't one of us.

What was the speed limit??
Most of us keep an eye on traffic behind us-and drive with other folks in mind
Being polite in other words.
Of course we rarely break the speed limit(except DOWNHILL which is free energy- more properly it is energy we already paid for)

What road was this-we can look up the posted speed limit??
30-35 on a 35 mph road-is about right
downhill is one place hyper milers might BREAK the speed limit

Yeah safe bet he WASN'T one of us-we WOULD/MIGHT have been speeding
(now I never do-but I have HEARD that other hyper milers do slightly exceed the speed limit on downhill stretches)

For example-I suspect Edwin the Magnificent is a secret downhill speeder!!


Seriously we-hypermilers-avoid the brake pedal and avoid regenerative braking
Braking of any sort is worse than the GO pedal

Braking is POISON for a hyper miler!!
And downhills-some hyper milers MIGHT exceed the speed limit-but will certainly edge right up to it
This guy WASN'T one of us- he needs to learn how to drive for mpg and for manners.
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Old 03-26-2015, 07:59 PM
fuzzy fuzzy is offline
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Re: Mountain Turtle

Quote:
Originally Posted by Homeboymi View Post
... I was just curious how you people can coast so slow and not use your brakes.
The same way any other car goes slower downhill: downshift. The Prius just has fewer low gear choices, i.e. just one, called 'B'.

Cruise Control can also be used to control downhill speed. It will modulate the amount of engine braking.

What was the PSL (posted speed limit)? How steep and long was the hill?
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