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Old 10-24-2007, 11:22 AM   #1
Reciprocity
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Default 4 speed -> 5 speed -> 6 speed

Back in the day my 1972 MG was a 4 speed. My next manual car was a 1989 Honda Accord...5 speed.

Now, as we all know, 6 speeds are fairly common.

Why the changes over the years? I remember a friends 196something Bronco was a 3 speed manual (three on the tree baby).

Is this due primarily to fuel economy concerns or technological advances?
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Old 10-24-2007, 11:23 AM   #2
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My first car (and namesake) had a three speed on the floor.

R 2
1 3
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Old 10-24-2007, 11:23 AM   #3
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it is because of el nino
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Old 10-24-2007, 11:24 AM   #4
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I would say both.
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Old 10-24-2007, 11:24 AM   #5
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I drove a '71 Chevy p/u with 3 on the column.
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Old 10-24-2007, 11:25 AM   #6
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Advances, I'd say.

Lighter, stronger metals. Better assembly control means they can make smaller gears and parts.

Also higher speeds, of course. An old MG wouldn't do much past 50, now you need to go up to 100 so you need more gearing to accommodate that.
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Old 10-24-2007, 11:25 AM   #7
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Performance, economy, forward thinking, and technology to back it up. If you gear a car better, it's faster. It also gets better mileage. And the more gears it has, the better it is.

"Wider is better"

It also completely depends on the type of car / engine. NASCAR still has 4MTs... food for thought.
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Old 10-24-2007, 11:26 AM   #8
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Quote:
Originally Posted by boxered View Post
I drove a '71 Chevy p/u with 3 on the column.
"three on the tree"
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Old 10-24-2007, 11:26 AM   #9
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Paddle is the way of the future.
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Old 10-24-2007, 11:26 AM   #10
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I'm looking forward to my 2028 v31 STi with 14 speed
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Old 10-24-2007, 11:26 AM   #11
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Quote:
Originally Posted by Keith View Post
it is because of el nino

Which, as you know, is Spanish for..."The Nino".
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Old 10-24-2007, 11:27 AM   #12
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Quote:
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Paddle is the way of the future.
... You know how I know you're gay?
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Old 10-24-2007, 11:28 AM   #13
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Quote:
Originally Posted by Neek View Post
I'm looking forward to my 2028 v31 STi with 14 speed
that would be the jdm version. We would have a 10 speed.
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Old 10-24-2007, 11:29 AM   #14
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Quote:
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We would have a 10 speed.
And still no Recaros.
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Old 10-24-2007, 11:32 AM   #15
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Don't forget Lexus with their automatic 8 speed. I don't know if it is a true 8 speed, or 4 speed with overdrive for each gear though.
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Old 10-24-2007, 11:34 AM   #16
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GM is coming out with an 8 speed.
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Old 10-24-2007, 11:35 AM   #17
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Quote:
Originally Posted by aod View Post
Don't forget Lexus with their automatic 8 speed. I don't know if it is a true 8 speed, or 4 speed with overdrive for each gear though.
how could you have overdrive for every gear? That makes no sense. 4 OD gears would be silly. Unless you just meant a 4spd with low/high for each gear...
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Old 10-24-2007, 11:36 AM   #18
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Quote:
Originally Posted by aod View Post
Don't forget Lexus with their automatic 8 speed. I don't know if it is a true 8 speed, or 4 speed with overdrive for each gear though.
suck 8 dicks (or 4 dicks twice).
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Old 10-24-2007, 11:38 AM   #19
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Quote:
Originally Posted by r0bman View Post
Performance, economy, forward thinking, and technology to back it up. If you gear a car better, it's faster. It also gets better mileage. And the more gears it has, the better it is.

"Wider is better"

It also completely depends on the type of car / engine. NASCAR still has 4MTs... food for thought.
My GF says it's all about girth.

That's why my 2" long, 7" wide dong is the bomb.
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Old 10-24-2007, 11:39 AM   #20
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Don't forget the old Spitfires (and whatever else) that had a 4 spd but had an electronic OD for 3rd and 4th.

Oh man this is turning into a mind****.
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Old 10-24-2007, 11:53 AM   #21
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Quote:
Originally Posted by preach View Post
Don't forget the old Spitfires (and whatever else) that had a 4 spd but had an electronic OD for 3rd and 4th.

Oh man this is turning into a mind****.
That's right...my dad had some other British car (I want to say it was an MG too, MGA) with "electric overdrive". 4 speed with a button for a magical 5th.

I was thinking it was both economy and technology too. Improved metals/design means we can fit more gears in the box and more gears can translate into lower RPM at higher speeds...as well as having higher speeds in general.

Yes the MG wasn't fun above 50. I got it to 80 MPH once (I think...that was long ago). Whatever speed it was I was very scared for my life.

CVT will be the future however. That's infinite speeds with min/max determined by pully sizes. In that situation you could have an engine stay at a constant RPM with the gear ratio changes controlling your speed.
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Old 10-24-2007, 12:03 PM   #22
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Quote:
Originally Posted by aod View Post
Don't forget Lexus with their automatic 8 speed. I don't know if it is a true 8 speed, or 4 speed with overdrive for each gear though.
With the way the planetaries in an automatic transmission work, there's really no difference between the two. Each ratio is just a different comb0nation of clutching of the planetaries, there's not a "first gear" gear like in a manual.
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Old 10-24-2007, 12:04 PM   #23
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Quote:
Originally Posted by Matt K View Post
Unless you just meant a 4spd with low/high for each gear...
That's pretty much what GM did with the 80's Vettes. 4 speed manual plus an "overdrive" on 2nd, 3rd, and 4th (I have no idea if it was a true overdrive ratio below 4th, though).

One of my friends has an old Austin Healy with a similar setup as well.
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Old 10-24-2007, 12:11 PM   #24
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Description: A rare limited edition 379 X with Brand New rubber. In excellent condition, ready to go to work today.
Brand: Peterbilt
Year: 05
Model: 379-127
Color: Blue
Engine: C-15
Mileage: 488000
Wheelbase: 278
Transmission: 18 Speed
Suspension: FLEX-AIR
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Old 10-24-2007, 12:16 PM   #25
Reciprocity
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Quote:
Originally Posted by docwhorocks View Post
Description: A rare limited edition 379 X with Brand New rubber. In excellent condition, ready to go to work today.
Brand: Peterbilt
Year: 05
Model: 379-127
Color: Blue
Engine: C-15
Mileage: 488000
Wheelbase: 278
Transmission: 18 Speed
Suspension: FLEX-AIR
Type: Tractor
Horsepower: 475
Tires: 11R24.5
Sleeper: 70HT
Ratio: 3.36
Trim Level: PLATINUM
You can have a gearbox the size of a MG in one of those.
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