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Old 12-27-2010, 07:24 PM
 
Location: SF Bay Area
5,994 posts, read 17,822,240 times
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Quote:
Originally Posted by skeet09 View Post
I think so. See this Mazda Rx-8 Specs.
Engine Type
232-hp, RENESIS 2-rotor, rotary engine with 6-speed manual transmission (212-hp, 6-speed Sport automatic transmission) and 3-stage variable induction system (VIS)
My work boss has one of these and you can switch between the transmission of your choice.
That's actually not true at all, you cannot switch between the transmission of your choice as each car is equipped with only one transmission. You either get the 6 speed manual or the 6 speed sport automatic (with manual shift mode which basically forces the automatic transmission to shift up or down).
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Old 12-27-2010, 07:38 PM
 
Location: Hopewell New Jersey
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I never had or drove one (too young at the time) but I seem to remember that before the torque flight trans came out Chrysler had a system that had a clutch pedal. You stepped on it to get into forward but there after it shifted up thru the gears by itself. Clutch was required at stops, getting into reverse etc.

Anyone know what I think I'm talking about ??



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Old 12-27-2010, 07:48 PM
 
Location: SF Bay Area
5,994 posts, read 17,822,240 times
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Quote:
Originally Posted by JBrown View Post
I never had or drove one (too young at the time) but I seem to remember that before the torque flight trans came out Chrysler had a system that had a clutch pedal. You stepped on it to get into forward but there after it shifted up thru the gears by itself. Clutch was required at stops, getting into reverse etc.

Anyone know what I think I'm talking about ??



I've never heard of it but it definitely seems feasible and not too difficult to implement.
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Old 12-27-2010, 07:58 PM
 
Location: Full time RV"er
2,403 posts, read 6,301,596 times
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Quote:
Originally Posted by iTsLiKeAnEgG View Post
I've never heard of it but it definitely seems feasible and not too difficult to implement.
And the correct answer is 2007 Toyota tundra pick up , Comes with an automatic 6 speed that you can switch to a 6 speed manual electric shift> cool and fast in that mode. Each each speed will hold until you up or down shift to a different gear.
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Old 12-27-2010, 08:02 PM
 
Location: Earth
4,237 posts, read 23,655,102 times
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In 1968 to 1971 GM had a semi automatic transmission called a "torque drive" which was basically a manually shifted powerglide transmission.

This transmission only came on inline 4 and inline 6 cylinder engines. The only cars I know of that ever received them were the Nova and the Vega.

Of course you could always take an automatic and look into having a manual valve body installed. Then you'd have to shift it all the time (like a manual) but it would still be a slush box.
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Old 12-28-2010, 07:53 AM
 
4,500 posts, read 11,510,738 times
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Quote:
Originally Posted by JBrown View Post
I never had or drove one (too young at the time) but I seem to remember that before the torque flight trans came out Chrysler had a system that had a clutch pedal. You stepped on it to get into forward but there after it shifted up thru the gears by itself. Clutch was required at stops, getting into reverse etc.

Anyone know what I think I'm talking about ??



Sounds slightly like a motorcycle tranny.


As far as the OP's question goes: If you mean a manually shiftable automatic (which has been around for ages now), then yes, but it won't have a clutch thus it doesn't work exactly like a normal manual (DCT's gets closest)

But a fully auto and a fully automatic? No, that would require two transmissions and a system where you could choose which transmission drove the wheels at any given time. Not only technically nigh on impossible, also completely and utterly useless.

Of course you also have things such as Dog Boxes, where you only have to clutch into 1st and Reverse (sometimes during downshifts) or sequential trannies, primarily used in race cars, both of them.
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Old 12-28-2010, 08:19 AM
PDD
 
Location: The Sand Hills of NC
8,773 posts, read 17,237,166 times
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Quote:
Originally Posted by ferretkona View Post
I remember you had to keep your hand off the stick in the VW bug when not shifting, the slightest touch would start to engage it. Too much light touches wore the clutch out.

My dad said the old Doug Nash transmissions were semi auto, I do not know how true that is.
The old Doug Nash transmissions that he might be talking about are the ones used in drag racing that did not require using the clutch to shift gears. Richmond Gear now makes the Doug Nash transmission but not sure if they make a clutch-less shifting trans like they used to.
Many companies now make clutch-less transmissions for road racing and drag racing, Tex Racing, Jerico, Liberty, G Force,Wiseman.
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Old 12-28-2010, 08:22 AM
PDD
 
Location: The Sand Hills of NC
8,773 posts, read 17,237,166 times
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Quote:
Originally Posted by JBrown View Post
I never had or drove one (too young at the time) but I seem to remember that before the torque flight trans came out Chrysler had a system that had a clutch pedal. You stepped on it to get into forward but there after it shifted up thru the gears by itself. Clutch was required at stops, getting into reverse etc.

Anyone know what I think I'm talking about ??



Your talking about Fluid Drive that Chrysler used in the late 40's early 50's
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Old 12-28-2010, 12:48 PM
 
Location: The Circle City. Sometimes NE of Bagdad.
22,491 posts, read 23,617,267 times
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^^ I think they also had a transmission called a Gyromatic if memory serves me correctly. My step sister had one. Was a gutless wonder.
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Old 12-28-2010, 01:06 PM
 
Location: Eastern Washington
16,168 posts, read 52,876,991 times
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Quote:
Originally Posted by Fighter 1 View Post
And the correct answer is 2007 Toyota tundra pick up , Comes with an automatic 6 speed that you can switch to a 6 speed manual electric shift> cool and fast in that mode. Each each speed will hold until you up or down shift to a different gear.
This is what I meant by "user interface". This is an automatic, has 2 not 3 pedals on the floor - you can let it do it's own thing or you can use the "manual interface" - but at the end of the day, it's an automatic trans.

The 2 main enabling technologies of most automatic transmissions - planetary gear sets that shift with clutches (including one-way clutches or sprags) rather than sliding gears or locking dogs, and torque converters - are not normally found one without the other in factory built cars but are actually independent devices. I have heard of people who built cars that had both a torque converter and a manual clutch. Never saw one but read about them as a kid.

A Lenco is an example of a manual transmission that shifts via internal clutches, but has a manual clutch. You drop the clutch and pull the levers in sequence as you redline each gear, all the gears are engaged all the time but only the highest gear you have engaged is actually driving through it's clutch.
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