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AT vs AMT, can someone explain further?
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pacer
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 Sep 6 2006, 09:20 AM
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like said earlier, automatic tranny requires a torque converter which is a series of plates and clutches that sap power from the engine to operate thus creates an ineficientcy compared to a manual clutch
amt IS NOT AN AUTOMATIC, it is technically a manual but with a hydraulically actuated clutch (the monkey) conected to a ecu. what it does is that the engages and disengages the clutch for u when u want to change gears. in simple terms, if u want the computer to do the gear switching for u, just pop it in auto mode and the ecu will do the rest. the gear stick is not mechanically connected to the gearbox compared to a manual, but connected by a wire to the ecu, with this then u can do ala steptronic.
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pacer
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Sep 7 2006, 07:34 PM
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QUOTE(tunertoobe @ Sep 7 2006, 04:43 PM) Can AMT(or in this article, SMT) really perform rev-matching like mentioned in this article? SMTs can also perform matched-rev (our double-clutch) downshifts: When the driver downshifts, the SMT disengages the clutch, shifts to neutral, and re-engages the clutch. The SMT calculates what the engine RPMs will be in the next-lowest gear based on the current road speed, and revs the engine (and, since the clutch is engaged, the transmission) to that speed. It then disengages the clutch, shifts into the lower gear, and re-engages the clutch. The result is a smooth change with no jerk and no sudden deceleration. EDIT: @hypermount. Now I see the AMT costs half as much as an Auto.  Wow, higher tech but at a lower price.  the savvy AMT cannot do that, but if u get your timing right, doing heel and toe will make changes smooth. its not the latest in technology like the offerings from BMW and the newer alfa's. however if left in full monkey mode (auto), u do have to lift off the throttle to get good upshifts without jerks. to make a comparison, just think of alfa's first generation 156 (if u have driven one or sat in one) and u would not be too far off... and yes, the AMT gearbox price is the same as a manual price but i dunno how much is the actuator. i dunno bout savvy but the last time i asked proton how much was waja auto and was quaoted 22K. |
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pacer
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Sep 7 2006, 08:36 PM
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QUOTE(tunertoobe @ Sep 7 2006, 08:02 PM) I see, well that's enough to put me off. I want to practice heel and toe. dont be put off lah, at first i also like that, but then after driving it, my mind changed, then power and handling is great for a car at that price. the gearchange will be much better once u get used to it... |
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pacer
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Sep 8 2006, 10:51 AM
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QUOTE(tunertoobe @ Sep 7 2006, 10:26 PM) Hehe, I know it'll be more fun. But I want to try good ol' manual first. yaya... manual still da best... i have trash... ehem...driven 2 cars in manual and one in AMT, the manual clutch is kinda short and high (like an on off switch), quite hard to modulate... both manual cars like that... so i think its the character and takes some getting used to. but the gearchanges are accurate and snappy, but u do feel quite a bit of vibrations on the gearknob when accelerating in gear. |
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pacer
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Sep 8 2006, 07:25 PM
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QUOTE(evilhomura89 @ Sep 8 2006, 04:32 PM) Usually, when we stop, we'll need to go from Gear 4 directly to gear 1 for manual rite?? In AMT, we can go straight from gear 4 to 1 to need to shift down 4,3,2,1?? for AMT lets say u stop the car at traffic lights on 4th, it will automatically shift back to 1st.... but on the roll, u cannot go from 4th to 1st, got to do it in sequence ( 4th,3rd,2nd,1st) |
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pacer
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Sep 17 2006, 07:36 PM
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QUOTE(goldfries @ Sep 17 2006, 08:18 AM) quite likely. just don't know when. of course, i have to test out Myvi first but the Savvy is high on my list already.  yes. haha... no need to waste time to test drive the other one la  |
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pacer
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Sep 17 2006, 08:02 PM
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i was reffering to myvi... hehe...  |
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