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The Future Of The Manual Transmission

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  • goosenoosegoosenoose Member Posts: 9
    buying my first car in a couple of days and i've only ever driven slush... looking at a 2012 accent m/t as my very first manual

    any tips for a complete newb to stick shift?
  • ateixeiraateixeira Member Posts: 72,587
    Yes...

    The most important thing to do is to find the point in the clutch travel where it begins to grab.

    Try letting out the clutch every-so-slowly until you feel it begin to grab. Don't even let the clutch out, push it back in.

    Then find that point again. And again.

    Do it without using the throttle. Once you know where that friction point is, you can add throttle and ease off gradually.

    It's a skill you will need when going up a steep ramp, for instance.
  • kyfdxkyfdx Moderator Posts: 265,441
    That's it, exactly..

    Get on level ground, and keep easing that clutch out till you feel it start to hook up... Once you get to that point, no hill will ever bother you.. you'll be able to hold it, without even using the gas...

    (We've been working on that at home, this week.... ;) )

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  • stickguystickguy Member Posts: 53,330
    learn on someone else's car!

    2020 Acura RDX tech SH-AWD, 2023 Maverick hybrid Lariat luxury package.

  • steverstever Guest Posts: 52,454
    lol, exactly what I was thinking. That's what I did.

    Of course, I learned on a '57 Chevy with a column shifter. It's a wonder I ever drove a MT again.
  • puffin1puffin1 Member Posts: 276
    If you look at alot of new cars ,that claim over 40 mpg there's most likely an asterisk or a footnote at the bottom saying "manual transmission".I don't see that on a DSG though.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    The BAD CLUTCH HABITS Handbook

    or

    How to Destroy a Clutch Quickly and Efficiently

    1. Use the clutch to hold the car while on a hill by engaging/disengaging it and having the car rock back and forth. (This is one of the best ways to mangle a clutch)

    2. When approaching a red light at high speed, jam the transmission into a lower gear. Not only does this put stress on the transmission synchos for no good reason, and shock the clutch and pressure plate and driveline, it will save those precious $75 front brake pads.

    3. The clutch pedal makes a great foot rest. Just keep your foot on it while you drive so that the clutch might be allowed to slip ever so gently.

    4. If you get stuck in snow, just rock the car back and forth for half an hour while wildly spinning the wheels and changing gears quickly from first to reverse. I mean, why join AAA for $60 a year when you can maybe get out of this spot for a mere $800?

    5. If you can, drive around town in 5th gear at 1500 rpm. Yes the car will shudder and lug, but think of how many ounces of gas you're saving by doing this and not 'revving" the engine in 3rd gear like those other guys next to you.
  • isellhondasisellhondas Member Posts: 20,342
    edited June 2011
    Old VW bugs were a great example of how a driver determined clutch life.

    When I pulled the engine out of my dad's 1962 Bug it had over 100,000 miles on it with one valve job at 70,000.

    Thje original clutch disc looked so good I was tempted to just put it back in but I replaced it.

    Others complained because they would have to replace a clutch every 30,000 miles. Of course, they blamed it on the car.

    I have ridden with people who have driven nothing but sticks yet still don't know how.
  • eliaselias Member Posts: 2,209
    yes to what plektosaurus said about v8 with a stick - i've been driving one of those since 1985 after 7 years with various slushbox V8s & a 1965 vw-beetle...
    starting today and for most of summatime, i'll be DDing my slightly-modded V8 with stickshift unless wild storms are predicted....

    For the worst city/commute/brutal-rushhour driving V8 with stick does get old fast, and then I'll drive my vw TDI (stickshift) for a week or two, it handles the stop & go much more patiently.
  • dat2dat2 Member Posts: 251
    A lot of cars blip the throttle on downshifts. Nissan/Infiniti has been doing that since the 2007 model year!
  • dat2dat2 Member Posts: 251
    What? No, most new cars do not run the same rpm at highway speed. Where did you get that? I have a G37 and a Fit and the Fit runs more than 1000 rpm higher at highway speed. Highway mpg is affected as much by gearing as displacement, if not more. Look at the Corvette. It practically idles at highway speed and can get 30+ but around town you're probably lucky to get 15 in real world mpg.
  • dat2dat2 Member Posts: 251
    Sweet Skyline! I don't know, I think I've read somewhere that rear wheel drive is a little more efficient, all other things being equal, due to the transaxle vs. a driveshaft? Or at least, drivetrain losses are a little less with rear wheel drive.
  • dat2dat2 Member Posts: 251
    Why is the 1.8 v6 Mazda motor considered poorly designed? I've never heard that b4. Yeah it didn't make a ton of power and wasn't the most efficient engine around.
  • dat2dat2 Member Posts: 251
    Usually the Carmax Toyota dealers have a few manual Camry's in stock.
  • dat2dat2 Member Posts: 251
    I love Louisville. It could be a tough place to learn to drive a stick though! Lots of traffic and the roads wind around quite a bit! Take him down to Loretto for a tour of the Maker's Mark distillery!!
  • hoosiergrandadhoosiergrandad Member Posts: 96
    I think the Honda Crosstour rev matches when downshifting , as well as holding a gear through a curve......

    Nothing wrong with downshifting to save brake wear as long as you don't put a shock load on the driveline ( DIY Rev matching).
  • dat2dat2 Member Posts: 251
    DIY rev matching with an auto is not a good idea but blip throttle downshifts with a manual is fine! If you can match the rpm of the downshift there is no shock to the driveline.
  • shiposhipo Member Posts: 9,148
    "Yeah it didn't make a ton of power and wasn't the most efficient engine around."

    Well there you have it; low on power and low in fuel efficiency for a given displacement doesn't make for a well regarded engine in my book.
  • eliaselias Member Posts: 2,209
    My 1985 z28 (computer-controlled 4bbl carb) blipped the throttle for downshifts and would hold the revs for a bit waiting for me to put it in gear.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    edited June 2011
    Yeah but nothing I ever tried is as fast and precise on shifting and blipping as a Ferrari unit, expecially given the power and speed at which it is working....rpm levels and speeds that Nissans and Chevys can only dream of. I was trying to give an example of the best of the best, not meaning to implying that they were the "only". The F1 unit is race-derived, not consumer friendly particularly.

    I think an F1 unit, say in a McLaren, can go from 6th to 1st in about 3 seconds flat. I don't think those other cars are going to do that.
  • ronsteveronsteve Member Posts: 1,234
    Of course, I learned on a '57 Chevy with a column shifter. It's a wonder I ever drove a MT again.

    In the early '90s, my brother's first attempt to get me driving a MT was done using his now-wife's 1982 Chevy Cavalier... 4-speed, no tach. Didn't leave me with a good feeling at all.

    A couple years later, he had me drive his 1986 Accord... World. Of. Difference. The next 4 cars that would grace my household over 7 years were manuals... I think my favorite of them was the 1993 del Sol, but the ones I spent the most time with were a 1994 Saturn SL2 (surprisingly bad gearing for a supposed close-ratio box) and a 1999 Corolla (transmission was the best part of an otherwise boring car).
    2015 Acura RDX AWD / 2021 VW TIguan SE 4Motion
  • hoosiergrandadhoosiergrandad Member Posts: 96
    Maybe my post was a little muddled....should have said specifically that I was talking about DIY rev-matching with a manual.......
  • wwestwwest Member Posts: 10,706
    "'....2. When approaching..."

    Downshifting as an aid to braking is also a way to "stabilize" a RWD or R/awd vehicle for quick slowing, especially when in a turn, like having a "drag" anchor. But while applicable, rarely, to public road use that's more of a "track" thing and of course should NEVER be tried in a FWD or F/awd vehicle.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    downshifting in a turn makes sense, but downshifting while speeding toward a red light seems pointless. I like to say "don't choose another gear unless you're going to use it for something".
  • shiposhipo Member Posts: 9,148
    edited June 2011
    Downshifting as an aid to braking is also a way to "stabilize" a RWD or R/awd vehicle for quick slowing, especially when in a turn, like having a "drag" anchor.

    Very bad idea, especially when conditions are slippery. You pull that stunt in a RWD car in slippery conditions and you'll either end up sideways or in a loop-de-loop.

    Like it or don't, believe it or not, it is far safer to use downshifting as a means of (limited) deceleration in a FWD or AWD car when traction is marginal.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    The problem with downshifting as a braking technique is the danger of 'compression braking" which can send a vehicle out of control if you do the downshift at the wrong time and at the wrong RPM.

    In most cases, if you're going to do anything sudden with the gas pedal, the brake pedal, or the gearshift knob, do it when the vehicle is in a straight line.
  • shiposhipo Member Posts: 9,148
    "The problem with downshifting as a braking technique is the danger of 'compression braking" which can send a vehicle out of control if you do the downshift at the wrong time and at the wrong RPM."

    Were it only that simple; consider the following scenario:

    Car: Late model RWD BMW with a manual transmission and traction control fully engaged.
    Geography: Rolling hills with roads which wind around the local landscape with lots of elevation changes.
    Temperature: Within a degree either way of freezing.
    Weather: New light snow.
    The drive: Descending a long curvy grade in second gear.

    In the above scenario it is highly likely that the car will encounter conditions where the rear wheels lose traction, especially on a curve, while the front wheels are still tracking where they're pointed. When the loss of traction occurs, it is 100% guaranteed the car will quickly enter a spin.

    If the above scenario was repeated in a vehicle with either FWD or AWD, the worst case would be the nose of the car would start to plow (albeit at a higher threshold than with the RWD vehicle).
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Well if you're going down a long curvy road with light snow in a FWD car and you jam it into too low a gear, and over-rev the engine so that it compression brakes, you're going into the trees--no different than slamming on the brakes in a curve..all the FWD or RWD would determine is which end of the car will hit the tree first.

    You bring up an interesting point, though...whether traction controls can sense compression braking...I know ABS wouldn't...but TC might only measure *differential* wheel spin, and with compression braking there wouldn't be a differential...

    Perhaps some sophisticated stability control system can detect compression braking and compensate.....?
  • shiposhipo Member Posts: 9,148
    edited June 2011
    "Well if you're going down a long curvy road with light snow in a FWD car and you jam it into too low a gear, and over-rev the engine so that it compression brakes, you're going into the trees--no different than slamming on the brakes in a curve..all the FWD or RWD would determine is which end of the car will hit the tree first."

    Last time I checked, no car, regardless of drive orientation can correct for idiocy behind the wheel. :P

    "You bring up an interesting point, though...whether traction controls can sense compression braking...I know ABS wouldn't...but TC might only measure *differential* wheel spin, and with compression braking there wouldn't be a differential...

    Perhaps some sophisticated stability control system can detect compression braking and compensate.....?"


    I can tell you from first hand experience that even BMW's sophisticated traction and stability control systems are unable to correct for a loss of traction due to compression braking.

    When the scenario I outlined above happened to me I was surprised to see a mailbox heading in my direction and it took a tenth of a second or two for me to figure out what was wrong and quickly press the clutch pedal in. As soon as the clutch disengaged, sanity was restored. :)
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    There was a time when Mother Nature self-corrected for stupidity, but now electronics does it (usually).
  • andys120andys120 Member Posts: 23,669
    almost every configuration of car on every concievable type of road in all sorts of conditions without every having the slightest problem. I think the only way you're going to get in trouble is if you crank in very high rpms while going fast with the expectation that the engine will do most of the braking.

    That is to be avoided since it's hard on the drivetrain and as they say "pads are cheaper to replace than clutches" (and they have a lot more brake- power).

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

  • ruking1ruking1 Member Posts: 19,826
    Indeed. I am also working on brake pads and rotors. One car I have is projected to go a min of 250,000 miles on the brake pads and rotor combination.
  • xwesxxwesx Member Posts: 17,678
    I agree; I drive on snow/ice a solid 50% of the year, and I've never had a problem with compression braking. Not in my '69 Chevy C20 (RWD) with all-season tires, not in my FWD Escort, and not in any of my AWD vehicles. As long as the nut behind the wheel is properly torqued, all will be well. ;)
    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
  • eliaselias Member Posts: 2,209
    engine-braking is absolutely prohibited on racetrack in my experience;
    it was enough to get you pulled off the track during training. a total no-no for a racer. (it's not the fastest way to go around the track!)

    and yes in winter driving it is not unusual to have the rear get loose and the car get sideways due to engine-braking or downshifting at the wrong time. an automatic transmission can downshift at the wrong time going downhill in the snow and voila your car is sideways or backwards.
    this risk/effect is usually increased high-compression/high-hp vehicles with lots of cylinders... (my favorites!)
  • shiposhipo Member Posts: 9,148
    edited June 2011
    "That is to be avoided since it's hard on the drivetrain and as they say "pads are cheaper to replace than clutches" (and they have a lot more brake- power)."

    First off, the old wives tale which says engine braking is hard on the drivetrain is simply false (assuming you're not jamming gears at RPM thresholds which are too high).

    Second, I've been hearing the old adage that "pads are cheaper than clutches" for many-many years, and the truth is, the statement is only relevant when you're talking about stop-and-go driving with lots of short duration braking events. If you look at friction material wear from the opposite side of the spectrum, a long multi-mile descent using engine braking versus brakes; using the engine braking is a no-brainer in terms of component wear. Think about it, a car on a one-mile descent at 30 mph will endure say two minutes of brake pad wear versus less than a second of clutch wear for the same trip. If the descent is longer in duration, the math works out even more in favor of using engine braking.
  • puffin1puffin1 Member Posts: 276
    edited June 2011
    Shipo, you being from the Granite state can't tell me from Maine you never played with your car on deserted snow packed or icy road as a kid. Turning the wheel in the oppose it way of a rear end slide then down shifting to do a 360?
    Ok, I live in Eagle Vail CO in the winters and driving I 70 all you see is side steep staight up a mountain dirt roads for truckers who lose their brakes.
    How do you drive down MT Washington?
    Someone posted they wouln't dare to buy a used BMW 3 with a six spd as it might be risky. I'm on my third one and my favorite cars were Integras and thr Type S never had a clutch problem and when I got rid of them they were just as good as new. Driving a A/T , Steptonic or a DSG is boring to me. Pretty soon we wil have an autro pilot so people can muti task. Have a good one I enjoy your post.
  • shiposhipo Member Posts: 9,148
    "Shipo, you being from the Granite state can't tell me from Maine you never played with your car on deserted snow packed or icy road as a kid. Turning the wheel in the oppose it way of a rear end slide then down shifting to do a 360?"

    Hmmm, I must still be a kid then as I still like to go out in the white stuff and mix it up. :blush:
  • wwestwwest Member Posts: 10,706
    Sorry, but RWD and engine braking are the ABSOLUTE rule at the race track.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    "compression braking" implies by its very definition, a sudden, rapid decrease in RPM by downshifting....it's not about a gentle use of the transmission--that's just called 'slowing down'. We are talking about an extreme use of a manual transmission right off the bat....a distinct tire chirp, if you will....

    I don't think the transmission's synchros think it's an old wives tale. What is holding the car back when you brake hard with the transmission?---not the brakes---all that force is transmitted to the gear set. So if you're in a 3500 lbs car and you use the transmission to scrub off speed rapidly from 60 mph to 30 mph, where do you think all that energy went?-- clutch face, gear set, synchros, axle shafts, differential....

    If you compression brake when the car is not set properly, it's no different than slamming on the brakes when the car is not set properly--such as imbalance in a turn---
  • ruking1ruking1 Member Posts: 19,826
    edited June 2011
    Essentially the issue is still the same, managing the meshing of two friction plate surfaces and its down stream consequences and behaviors.

    To me, it is all about goals, purposes, degrees and compromises. The secondary or perhaps primary issue, it takes a whole lot of information and data to figure this out. On a greater level TMI if you will (too much information). When a greater percentage of the population were manual transmissions, a lot more folks cared. Now with the manual transmissions being app 20%, a lot LESS folks care.

    The appliance and automatic concepts really does not contribute to the mechanical understanding of what is really happening.
  • shiposhipo Member Posts: 9,148
    edited June 2011
    I have no idea where you got your definition of engine braking, but it is B.S. to say the least. No one here is talking about a "sudden" anything; in the scenario I painted yesterday I came out of my driveway, up-shifted into second gear and left it in second all of the way down the mile plus grade to the valley below. Engine braking.

    Another example I can use is heading down out of the mountains from Red Mountain Pass and into Silverton, CO; I drove that entire distance with zero brakes one time. During that trip I used constant engine braking (with no sudden gear changes or RPM swings) to safely arrive in Silverton. Turns out my master cylinder had failed, and once a new one was put in, I was good to go.

    Long story short; please don't confuse how some idiots slam into say second gear and then sidestepping the clutch pedal when travelling at highway speeds with what has been traditionally known as "engine braking".
  • oregonboyoregonboy Member Posts: 1,650
    Shiftright, I have the utmost respect for your knowledge and usually agree totally with your expressed opinions, but I have to disagree on this one.

    "compression braking" implies by its very definition, a sudden, rapid decrease in RPM by downshifting

    I would argue that compression braking can be as gentle as a summer's breeze, as in Shipo's excellent description in post #6893, of descending a long grade. There are degrees of compression braking, and slamming it into second as you enter a turn, sending RPMs to redline is unquestionably hard on the machinery.

    But there is nothing implied by the term that says that a more moderate application is impossible. :shades:
  • oregonboyoregonboy Member Posts: 1,650
    Haha - great minds think alike. ;)
  • shiposhipo Member Posts: 9,148
    Took the words right out of my mouth. :)
  • shiposhipo Member Posts: 9,148
    http://en.wikipedia.org/wiki/Engine_braking

    The above discussion seems to be completely devoid of any references to radical gear changes and extreme RPM transients. Go figure. ;)
  • steverstever Guest Posts: 52,454
    edited June 2011
    This part of the thread started when we started talking about downshifting approaching a light and then moved to turns. Shifty said that makes sense (downshifting in a turn), but downshifting while speeding toward a red light seems pointless.

    We weren't talking mountain driving when we got off on the compression braking. If I'm approaching a red light in city traffic, if anything, I'm blipping out of gear and using my brakes. Seems cheaper in the long run than trying to rev match and use the engine to slow the car down.
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    compression braking is a term we use in racing and in that context is something to be judiciously avoided. Actually anytime you let off the gas in any car you are compression braking in some fashion. I was referring to what happens when you choose the wrong gear while downshifting and you cause the rear (or front) wheels to lock...hence "compression" and "braking".

    But as a rule, even on public roads I don't personally recommend that anyone ever use the gearbox strictly for braking unless you plan to use that lower gear for something. As for coming into a turn quickly, I recommend that you do any downshifting while the car is still balanced, before entering the curve.

    On a long downhill, compression braking can be a good thing, if used in conjunction with the brakes themselves---otherwise you can defeat the rev limiter.
  • ruking1ruking1 Member Posts: 19,826
    edited June 2011
    I think that realistically, it does not cover three places where I have been. Pike's Peak (14,400 ft and several times)Colorado "Rocky Mountains" (traveled there a lot and lived in CO for easily 5 months) and Lake Tahoe's north and south shores destinations (probably more than I can count)

    The Lake Tahoe journey usually starts from sea level UP to where roads are @ app 7,000 ft. So a downgrade can be all of app 110 miles. In a Jetta TDI I normally come down from 7000 ft + a tad slower than I went up for there is an almost tremendous advantage to the no fuel draw scenario on a diesel (TDI). Normally it is +5 to +8 mpg advantage. Of course, I normally average the fuel mpg on the R/T.
  • eliaselias Member Posts: 2,209
    pretty sure driving sideways is part of the driving test in boston.

    hey HR puffinstuff, you drive down steep hills very carefully in a high-compression stickshift car, even with the best snow tires. (I used to use snows only on back but nowadays always use 4 regardless of fwd/rwd.)

    as for clutches vs pads only being relevant during stop & go - I drive mostly highway - just a bit of commuting/stop&go, and it melted my clutch. I did not beat on the car, these (GM) clutches fail on their own after ~100k, that's just the way it goes. I drove with an insanely broken clutch slide for a year and let another $1500 of engine/drivetrain damage accrue to the drivetrain don't let this happen to you :|

    really, wwest, engine braking only on the track ?! I had one fun day at laguna seca in 1972 formula fords, and the instructors were very clear and did bag me because I engine brakes twice, so they made me pull over and stop racing and be lectured because I was engine-braking a bit out of habit into the wacky turns - but they totally prohibited it! Are you saying it's faster to engine brake?! I can't say I believe it. They taught me that fastest is to accelerate maximum to last second, brake at last second, and accelrate out of the turn. It sure did seem right to me! To this day it works for me pretty good on the interstates/ramps too.
  • eliaselias Member Posts: 2,209
    shifty, the answer to your thermodynamic question is that the energy mostly went into compressing air, with the usual drivetrain loss along the way. you mention the drivetrain loss as if it's 100%. Actually it remains about 10%/whatever under decel just like under accel, pretty much same Newtonian laws/math applies but with opposite sign.

    there is a big difference between downshifting and braking. in downshifting the force/energy is 99.999% on the drive wheel(s). with braking there is a complex hydraulic system plus and ABS-pumps/computers/solenoids operating the brakes. so braking much safer and more effective than simple pV=nRT causing one or two wheels of reverse-torque especially on wet roads like for this years USA monsoons. (Al Gore invented monsoons, you know.)

    apparently shipo knows something about snow/ice driving too - in some USA states we are driving on ice/floods practically 50% of the year and have to be seriously concerned&controlled about loose-rear/sideways on ice/RWD. you lucky sun-bleached southern/flatlanders just don't get it ;)
    (ps - please do sell me some southern real-estate - is it summer there yet?)
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