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As a man thinks, so he is. Some people are never.

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Alternate Route

Turn off the nav system, crumple up that MapQuest printout, and let's find out where the next random turn may take us!

Aug 30, 2007 - Cruising Attitude

30,000 feet in an EMB-145I love to fly, in anything, to anywhere, anytime, day or night, good weather or bad, and I've never had a bad experience cruising through the clouds.

The picture was taken at about 30,000 feet somewhere over Ohio, dodging thunderstorms, on my way out to our recent meeting at the Edmunds offices. With all that time to think, my mind will travel the alternate route, and I started thinking about cruise control.

As fate would have it, after I returned from LA, my Altima was in a little bumper basher and this is the week that it's in the hospital getting patched up, forcing me to get a rental for the week. I chose a Versa specifically so I could compare the 4 speed automatic with my 6-speed.

The cars are virtually identical, and other than noting that I tend to drive in a higher gear than the automatic normally picks for me, the biggest beef I have is the way cruise control works when coupled with an automatic transmission versus the function in a manual shift vehicle.

With the manual, when I set the cruise, my speed remains constant, engine revs remain constant because it stays in whatever gear I'm in (usually 6th), and the only time things change is when I find myself on a fairly steep grade where you reach a point where the cruise kicks of and I resume manual control of the throttle. After 28 years of driving manuals in the same area, there are really only two places this happens regularly, and thus I'm prepared to take over and keep the "flight" as smooth as possible. On the highway it makes things very easy as my speed remains absolutely constant.

After three days with the automatic, I find myself not turning on cruise if I'm in any kind of traffic. Slight upgrades immediately cause a downshift, which causes the car to slow, and then surge to get back up to speed, and when that happens next to another vehicle it really makes me appear like I'm racing them and creates a lot of potential for angst and road rage. I used to think that people I was passing on an upgrade were trying to not let me pass on the highway, but now I'm pretty sure their cruise and automatic transmission were behaving as they've been programmed to behave.

I've observed this behavior on every automatic I've ever had the misfortune to rent, regardless of make or model. It's just the way it is. And just another reason I'll stick with my stick!

Cruisin' down the road
But I can't drive 55
Computer control

3:27 am | Categories: automotive haiku, cruise control, manual transmission
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Comments
pf_flyer - Aug 30, 2007 6:03 pm
I've seen this in big and small engines, 4 and 5 speed trannies. Some ARE worse than others, but the way cruise behaves in a manual has really spoiled me :)
mikevegas06 - Aug 30, 2007 5:39 pm
I wonder if engine size and number of gears has anything to do with the agressiveness (is that a word?) of the cruise control? Do you think the downshifs would decrease or be less noticeable if car has a 5 speed automatic?
pf_flyer - Aug 30, 2007 4:28 pm
I got quite a few good ones on the flight that morning. Lots of strange and unusual looking cloud formations!
Sylvia - Aug 30, 2007 12:31 pm
Nice photo!
pf_flyer - Aug 30, 2007 4:31 am
I understand that on steeper grades that the cruise on an automatic will cause a downshift as the car tries to maintain speed, but the programming seems overly sensitive. The places this automatic is downshifting don't even come close to making my MT feel like it needs to be in a lower gear. Only two days left until the Altima is back :)
ray80 - Aug 30, 2007 4:17 am
I hear ya! I never was much of a cruise control fan on some of the older autos I drove. The lurching to go foward and and slow downs on downgrade made me feel uncomfortable so the cruise function was pretty much not used. I think they have gotten a bit better on the auto's these days, but the MT on my HHR seems smooth as glass for the most part and I no longer have any problems using it on longer trips.
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