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The Future Of The Manual Transmission

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  • andys120andys120 Member Posts: 23,669
    I've owned a lot of stick shift cars and five speeds worked well in everything from an Accord hatchback to a Mustang 5.0. The only one that needed a sixth gear was my '83 VW (rabbit) GTI which was wound up tight doing 70mph (roughly 3800RPM).

    2001 BMW 330ci/E46, 2008 BMW 335i conv/E93

  • nippononlynippononly Member Posts: 12,555
    edited February 2011
    I was thinking one good candidate would be the Fit, which turns like 3300 rpm at 70 IIRC. If I'm driving the wide open FLAT expanses of I-5 from SF to LA, I want a sixth gear to get me an extra 2-3 mpg, not to mention tone down the revs a bit for that long monotonous drive.

    Plenty of cars are in that camp, and I disagree with some of the posters above who say there is no benefit to it. The benefit is saved gas and more. But my point really was that none of the automakers are putting any thought or energy into improving their manuals any more, they are too busy perfecting their CVTs and latest dual-clutch whatevers. :-(

    2014 Mini Cooper (stick shift of course), 2016 Camry hybrid, 2009 Outback Sport 5-spd (keeping the stick alive)

  • kyfdxkyfdx Moderator Posts: 265,419
    Yeah.. but, does it need an extra gear, or does it just need a taller 5th gear?

    I think it's the latter....

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  • steverstever Guest Posts: 52,454
    edited February 2011
    I'd be ok with an overdrive button for 6th gear. That's about all the shifting I get to do on the minivan now. :)
  • wwestwwest Member Posts: 10,706
    Insofar as FE is concerned the OPTIMAL number of gear ratios is.....

    INFINITE....!

    Which is why the CVT is so perfect.

    And the problem with adding gear ratios to try and match a CVT is the "shiftiness" of those, always, continuously, selecting and shifting into a different gear ratio in reaction to relatively small changes in roadway conditions.

    In another 50 years all of us with experience and/or love of stick shifts will be gone.

    The DSG in manual mode will then satisfy the few "purest" remaining.

    If by then some form of CVT has'nt taken the market by storm
  • samm43samm43 Member Posts: 195
    edited February 2011
    If by then some form of CVT has'nt taken the market by storm

    Perish the thought but is probable.

    So you think my novelty idea 30 years from now is too fantastical I presume? You're probably right unfortunately.

    Sam
  • kandacenkoreykandacenkorey Member Posts: 1
    how do i change the oil on my 02 blazier
  • isellhondasisellhondas Member Posts: 20,342
    Nope, you are not out to lunch.

    You could be correct, there could be a renewed interest in manuals in main stream cars but I kinda doubt it.

    Honda continued putting manuals in cars even though sales were dismal.

    People begged for V-6 Accord sedan manuals so they built a few and they were a dismal flop. At least they tried but I'm sure the corporate people who pushed for them were under the gun.

    Five speed CRV's were produced from 1997-2006. Sales were so poor that they were dropped. A few people complained but not many.

    EXL Accord manuals were dropped last year for the same reason.

    As far as CVT transmissions? I for one don't like the way they drive. They remind me of an old Buick Dynaflow.

    I suppose time will tell?
  • shiposhipo Member Posts: 9,148
    After spending a fair amount of time looking at engine specs and fuel economy results, I have come to the conclusion that there is no such a thing as the "Perfect" RPM vis-à-vis fuel economy. Given the relatively broad torque curves, the highly dynamic valve trains and fuel induction systems, my take is that the "Perfect" RPM for fuel economy on any given engine is actually a range of at least a couple of hundred RPMs (usually more).

    With the above in mind I have to ask, "Why all the hype surrounding CVTs and gazillion speed autotragic transmissions?" :confuse:
  • ruking1ruking1 Member Posts: 19,826
    I would agree. It is one reason why the Corvette has (in effect) 2 over drives, gear 5 and gear 6 (manual transmission) .
  • samm43samm43 Member Posts: 195
    edited February 2011
    I have a feeling that geographic location has a lot to do with this. In very hilly or mountainous towns, I think the automatic would be desired the most. Same with big cities with a lot of congestion the auto would often get the nod. So dealerships in those areas probably would have a harder sell for the manual than flat and more rural areas. Times change and some would say so do our needs. I'm still old school and proud of it but do like to still keep an open ear and eye to change if it is proven better. I find that not all new things are better though, just different.

    Sam
  • samm43samm43 Member Posts: 195
    edited February 2011
    There are quite a number if not possibly all 6 speeds whose top two gears are both overdriven in recent years. And with most, 4th is the direct or slightly underdriven gear. I am thinking in manuals too but this is probably true of the six speed automatics also.

    Sam
  • isellhondasisellhondas Member Posts: 20,342
    Oh, absoultly!

    Here in the Seattle area we have lots of traffic and hills like San Francisco.

    I had many a dyed in the wool automatic hater make the switch because they got sick and tired of sitting in traffic pumping the clutch or they got stuck on a steep hill in downtown Seattle with a car sitting on their rear bumper.

    Not like Montana.
  • fintailfintail Member Posts: 58,408
    I'm in that boat. My modern car, a big torquey V8, would be fun with a manual, but not here. The old car would be a 4 on the tree if it was a manual - I don't like column shifts, so I can deal with that auto too. I'm lazy, but I'm fine with that :shades:
  • ateixeiraateixeira Member Posts: 72,587
    I drive a 6-speed manual... Not really any good use for the extra gear

    I went from a 5 speed Miata (1993) to a 6 speed (2008) and with the close ratios it seems pointless. It's just how Mazda geared it, my 6th is actually shorter than 5th gear on the 5 speed manuals.

    Lost opportunity if you ask me. You'd never use 6th on a track anyway, so use it for low-rpm cruising to save fuel.
  • qbrozenqbrozen Member Posts: 33,733
    edited February 2011
    I've found that to be the case most times, too. They just space all the gears closer together rather than adding a gear on top of the existing 5. I don't get it.

    With the GTI, for example, there is NO reason I should be spinning at 3k rpms on the highway in 6th gear.

    '11 GMC Sierra 1500; '98 Alfa 156 2.0TS; '08 Maser QP; '67 Coronet R/T; '13 Fiat 500c; '20 S90 T6; '22 MB Sprinter 2500 4x4 diesel; '97 Suzuki R Wagon; '96 Opel Astra; '11 Mini Cooper S

  • ateixeiraateixeira Member Posts: 72,587
    And the crazy part is it's not even the same, the 6 speed is shorter. Revs are ridiculously high at highway speeds. Don't even think about going 75-80 for extended periods unless you have ear plugs.
  • isellhondasisellhondas Member Posts: 20,342
    Sounds good though! Our car has SIX speeds and our competition only has (gasp) five!

    My last bicycle had I think 18 speeds and I know I would skip through most of them.
  • samm43samm43 Member Posts: 195
    I have a theory on why they may do this. Cost. Warranty cost that is, as the more overdriven a gear set is, the better the bearing quality and size must be. So the scale of component quality has a fairly sharp upward graph when very overdriven gear sets are part of the equation.

    Sam
  • lilengineerboylilengineerboy Member Posts: 4,116
    I have a feeling that geographic location has a lot to do with this. In very hilly or mountainous towns, I think the automatic would be desired the most.

    I agree that geographic location has a lot to do with it, but I don't think its hills. I think it may be a cultural feel of the region. It was much easier to find manual transmission vehicles in Santa Barbara than in SE MI, a mountainous region compared to a relatively flat area.
  • lilengineerboylilengineerboy Member Posts: 4,116
    My last bicycle had I think 18 speeds and I know I would skip through most of them.

    Bike gears are different and there is overlap. If you multiply out the ratios to get gear-inches or whatever, there are duplicates. That said, the same reason you need gears in a car is the reason you need gears on a bike. A cyclists' legs spin about 80-120 RPM. You want to be in a gear that lets you spin that speed to be efficient. If you are climbing Little Pine you are probably going to be in the "granny gear" in the front and if you are going down the Kamikaze at Mammouth, you are probably in a modified extra big ring in the front and a tiny one in the back.

    When I ride, I don't use every gear in serial sequence, but if I am climbing a hill I use specific gears and when I am descending I use others. They are all pretty necessary. Granted if you are just on the bike for a couple of minutes to go to the ice cream place, you probably don't need gears at all.
  • shiposhipo Member Posts: 9,148
    Exactly.

    Years ago now (when I lived in Chicago) I dabbled in the triathlon thing for a few years. My racing bike (only a 14-speed) had a relatively small "corncob" on the back and that was perfect for racing up and down Lake Shore Drive. I then visited a friend/police officer in Mammoth and while I was there I raced in the Mammoth Lakes Triathlon. A couple of days before the race I rode from town to a point just down-hill from Tom's Place/Sherwin Summit and back and realized that I just didn't have the gears to race in that area.

    I visited a shop in Mammoth Lakes and bought the widest range rear cluster I could fit without having to change anything else (I just had to be mindful of the fact that I couldn't run on the largest chainring while also on the inner most rear gear; my chain wasn't long enough) and a-racing I went. Turned out to be one of my best races relative to the competition. :)

    On the way up 395 there were points where I was out of the saddle dancing for all I was worth, and other points where I had to wipe tears out of my eyes because my speedo was registering north of 60mph.
  • samm43samm43 Member Posts: 195
    60 is very fast on a bicycle. Amazing. You must have used one of those slip suits? Not sure the name, but they are very smooth and body hugging. They remind me of what speed skiers wear to help cut down on wind resistance.

    Sam
  • ruking1ruking1 Member Posts: 19,826
    As it applies to cars, there is a small following (% wise) of a small minority group ( manual transmissions) of an even smaller minority group (VW TDI with manual transmissions) that likes to swap out the 5th gear (2 of 3 gears: one being oem. For some one that knows what they are doing it takes all of 40 mins.

    It is really good for:
    1. mpg (same speed but app- minus 250 to 500 rpm,
    2. going even faster,
    or if one doesnt mind,
    3. optimization @ same rpm but higher speed
  • wwestwwest Member Posts: 10,706
    edited March 2011
    One of the chief advanatages of more available gear ratios is a lower, higher torque 1st, and maybe second gear. Serious FE gains there(***), especially high-revving 4 cylinder in the Miata.

    The Miata engine NEEDS 3000RPM to systain a 60MPH roadspeed.

    *** operating with the A/F mixture enriched, ~12:1 ratio rather than 14.7 required by EPA standards.
  • wwestwwest Member Posts: 10,706
    "...there is NO reason..."

    Only the factory engineers can advise you on that. It could be that the torque curve of your GTI engine is such that 3k rpms is the PERFECT gear ratio for FE with sustained highway cruising at a specific speed.
  • shiposhipo Member Posts: 9,148
    Actually I was wearing a helmet, gloves, a speedo, and my cycling shoes; that's all folks. :)

    That said, earlier that same year I was cycling north of Queenstown in New Zealand on my (exceedingly non-aerodynamic) touring bike (equipped with rear panniers and a front pack), and while I was heading down a very steep and curvy mountain road I hit an astounding 75 mph. Scared the stuffin' out of me. :)

    Then there was the morning after the Mammoth Lakes Triathlon where I left my friend's apartment early and did a round-trip to Bishop. On the way down US-395 I got into a nice tuck on the front bars and managed to sustain speeds between 55 and 65 for twenty minutes. I won't talk about the ride back up in that hot/dry/sunny eighty some degree day. :P
  • samm43samm43 Member Posts: 195
    Interesting. Can you tell us in more detail what it entails? A friend has said that his 6 speed TDI ratios are too close and he felt that there was no advantage at all over the 5 speed. I think he said that mostly about in city use. He said 6th was really tall which makes sense because the new TDI makes so much torque.

    So which gear (and ratios) is forfeited on this minor surgery?

    Sam
  • ruking1ruking1 Member Posts: 19,826
    Yes, I almost think that particular Mazda combination is optimized for places like the PCH (Pacific Coast Highway (#1) in So CA) and or Highway #1 in No CA. Dropping the top @ normal freeway speeds (80+ mph) would seem to be punishment.
  • samm43samm43 Member Posts: 195
    You must be in amazingly good shape. I got a hint of leg muscle cramp just now just simply reading your post. :sick:

    I didn't know those speeds could get that high on a bike unless you were towed with a hitch line. 75 is pretty gutsy to be sure.

    Sam
  • shiposhipo Member Posts: 9,148
    I was younger, thinner, lighter, and single back then. Amazing what having a family can do to you. :P
  • ruking1ruking1 Member Posts: 19,826
    edited March 2011
    It might be a tad on the TMI side for this thread.

    However to answer your question directly,

    it is a .756 oem stock 5th gear to any one of 3 (there are more and also OTHER gears):
    .681 (- 11% rpm) drop,
    .658 (-500 rpm this is HUGE for a TDI)
    .717 (-5% rpm)

    mpg gain is roughly HALF of the rpm percentage drop or 5.5%, 2.5%)

    Here is a (teaser) vendor reference for one such option .658 gear swap

    If this is verboten, apologies in advance.

    Not to over load an already TMI post there is also a 6 speed manual transmission upgrade. Gears are semi customize able. The European Jetta TDI comes with a 6 speed manual transmission normally and with BIGGER injectors (.205 vs .184) for 1. better mpg, 2. more hp and 3. torque. (90hp /155 ft #'s vs 100hp/177 #ft )
  • wwestwwest Member Posts: 10,706
    The only thing I know of north of Queenstown is a black diamond ski run NOT a bike route....!
  • samm43samm43 Member Posts: 195
    So true. ;)
  • shiposhipo Member Posts: 9,148
    You forgot one other thing, AJ Hackett and his bungee cords. :) I did the Kawarau bridge jump; what a blast. :)
  • steverstever Guest Posts: 52,454
    Snow is where the records are set for downhill bike runs (link).

    I'm assuming that a MT Subaru was the chase vehicle from the commercials a few years back.
  • shiposhipo Member Posts: 9,148
    I don't think I'd have the chutzpah to do a down-mountain run on snow at those speeds. Yeesh!
  • samm43samm43 Member Posts: 195
    edited March 2011
    I wouldn't think there is any such thing as TMI on manual transmission (or diesel either FTM) thread.

    I wonder if the 2.5 could handle that .658 swap? Or maybe it could handle the .681

    Or are the transmissions different all together? I guess they might be because the TDI has over 80 lb more torque.
  • wwestwwest Member Posts: 10,706
    NE.

    Bridge over Shotover.
  • samm43samm43 Member Posts: 195
    But wouldn't an off on snow have more forgiving rash? Although I guess there isn't much snow involved for speed runs with skinny bike tires. More like ice. I still think I would opt for the ice over pavement.
  • ateixeiraateixeira Member Posts: 72,587
    I almost think that particular Mazda combination is optimized for places like the PCH (Pacific Coast Highway

    Yeah but you'd never need 6th there. So make 6th taller.

    I swear you have to look down to tell the difference between 5th and 6th, that's how close they are.

    Some times I'm in 6th and I think I'm in FOURTH. No kidding.
  • ruking1ruking1 Member Posts: 19,826
    edited March 2011
    Well as you know, you do have to get TO and FROM those nirvana's of iconic road trips. ;) :shades:
  • plektoplekto Member Posts: 3,738
    I almost think that particular Mazda combination is optimized for places like the PCH (Pacific Coast Highway

    Most of Japan is like that as well along the coast. Especially along the western side. Good things happen when they decide to design a car for some place other than a freeway.
  • iluvmysephia1iluvmysephia1 Member Posts: 7,709
    edited March 2011
    helps keep the 5-speed manual tranny idea alive in my mind.

    image
    2012 Kia Rio Eco hatchback

    This one gets a 1.1L diesel engine for the European market and gets 73mp-U.S. gallon measurement. Whew. The one I am thinking of buying will get more like 40mpg with the stick, I would guess, before really looking in to the specs and research out there on the new beauty designed by Kia's Chief Designer, Peter Schreyer, formerly of Audi Motors of Germany. I can really see the European influence on this car.

    I was thinking I wanted a 2012 Ford Focus SE hatch in 5-speed form but I think once I start comparing the two cars together apples-ta-apples Kia will beat Ford hands-down in value quotient.

    That is the case for the Rio "EcoDynamics" ,powered by an all-new 1.1-liter three-cylinder CRDi diesel engine that, according to Kia, will make it the greenest car on the road and will achieve an impressive 88 miles per gallon (73 U.S. MPG). The tiny engine produces 69 bhp, but who cares about horsepower here? The magic number, as inscribed on the showcar in the pictures, is 85. Precisely, 85g/km of CO2 emission output, thereby "out-cleaning" the Smart fortwo (86g/km of CO2), the current title-holder of the cleanest car in the U.K., and certainly all hybrid vehicles like the Toyota Prius (89g/km of CO2).

    The 3-cylinder diesel Rio EcoDynamics achieves its amazing emissions figures with the help of Kia’s ISG stop start system. The car will also be available with 1.4- and 2-litre petrol engines as well as a 1.4-litre diesel.


    http://www.thecarblogger.net/2011/03/geneva-2011-2012-kia-rio-ecodynamics.html

    image
    2012 Kia Rio Eco rear end...sweet...the body the U.S. market gets will look just like this!

    One Kia enthusiast referred to this car as the Kia Rio Cinco. I sat down in one...a 2001 Rio Cinco 5-speed on Sept.29, 2001. My wife ran over to a Pepper Red 2001 Kia Sportage 4X4 5-speed stick and the rest is as they...history. So I have always seen the sweetness of Kia's Cinco historically speaking. :D

    We ended up buying the '01 Sportage at Jerry Smith Kia of Anacortes, WA that Saturday. But the thought of a Cinco was planted in this noggin perty well, apparently.

    2021 Kia Soul LX 6-speed stick

  • qbrozenqbrozen Member Posts: 33,733
    Only the factory engineers can advise you on that.

    riiiigghht. We also should never ever use any tires other than OEM, cause that's what the engineers chose. Or non-OEM brakepads, spark plugs, shocks, etc.

    Given the torque curve and the acceleration on tap at even 1500rpms in 6th, I stand by my statement.

    '11 GMC Sierra 1500; '98 Alfa 156 2.0TS; '08 Maser QP; '67 Coronet R/T; '13 Fiat 500c; '20 S90 T6; '22 MB Sprinter 2500 4x4 diesel; '97 Suzuki R Wagon; '96 Opel Astra; '11 Mini Cooper S

  • xwesxxwesx Member Posts: 17,676
    It would be very nice if the US market were to actually get a diesel econo-car like this.

    On a completely separate note, I must say that this is the first Rio that looks decent enough I might actually consider driving it. Kia/Hyundai have really been on a roll recently with coming up with very nice designs in their hatches and sedans. They must have broken that ugly stick they once used to beat all their designs!

    I give it a thumb up.
    2018 Subaru Crosstrek, 2014 Audi Q7 TDI, 2013 Subaru Forester, 2013 Ford F250 Lariat D, 1976 Ford F250, 1969 Chevrolet C20, 1969 Ford Econoline 100
  • iluvmysephia1iluvmysephia1 Member Posts: 7,709
    edited March 2011
    a thumb up is betta than a blazing finger of repudiation! Think no further on that as I show you this beautiful new B-Class from Kia Motors of South Korea.

    image

    I love detail in a small car and Peter Schreyer has penned nice detail all over this new Kia motorcar. Take a look at the hood...see the nice swirls coming up from just above the KIA badge emblem there? Sweet. Nice wheel design so we don't have to buy aftermarket wheeling, either.

    Love to see some early availability date information and pricing information on various feature packaging for this car in the near future sometime.

    2021 Kia Soul LX 6-speed stick

  • wwestwwest Member Posts: 10,706
    Switch the conversation from apples to oranges...?

    My statement, more exacting, was: Only the factory engineers have the where-with-all to say if 3,000 RPM is the most optimal engine speed, FE wise, to sustain 60 MPH in your car given the limitations of your gearbox.

    YOU cannot ascertain that absent a CVT and fuel flow rate meter.
  • ruking1ruking1 Member Posts: 19,826
    edited March 2011
    Well I am glad we are among "GEAR HEADS" then ! ;)

    Well some of the nuances might be: what rpm the max torque and max hp comes on. Probably more importantly, what you want to do amidst the calculations and trade offs. The good part is one can almost radically (within a few narrow parameters) tweak things that are important to them. Some examples better hp, torque, mpg. The thing I like the best is most all of it is street legal and passes smog checks. Indeed it does not directly affect smog measures but does effect them (better fuel mileage) When you pair with with beefier clutches, bigger turbos and injectors and chipping, it will still pass smog checks and in effect be a sleeping monster @ 48-52 mpg, till you want to wake it up. :surprise:

    Yes, I think a lot of folks really are not aware of how much 80# ft of torque MORE (or less, as the case might be) really MAKES. On gassers you have to spend BIG money to normally get 80# ft more.
  • qbrozenqbrozen Member Posts: 33,733
    edited March 2011
    Or, if I was so inclined, I could change the gearing and just see what happens.

    As I've already asserted, I am convinced the car would have no problem maintaining highway speed in 6th and get better mileage in the process.

    '11 GMC Sierra 1500; '98 Alfa 156 2.0TS; '08 Maser QP; '67 Coronet R/T; '13 Fiat 500c; '20 S90 T6; '22 MB Sprinter 2500 4x4 diesel; '97 Suzuki R Wagon; '96 Opel Astra; '11 Mini Cooper S

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