QUOTE(JC999 @ Apr 19 2012, 12:30 AM)
i read the wielding part is really bad, looks as if the car is like kereta potong.. anyone care to confirm?
Not the CAR laaaa, the DOOR.♠ ♠ ♠Proton Prevé V4♠ ♠ ♠, ► Official Discussions for Proton Prevé
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Apr 19 2012, 12:43 AM
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3,435 posts Joined: Oct 2008 From: Kota Bharu |
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Apr 19 2012, 01:42 AM
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2,141 posts Joined: Sep 2008 From: Muddy Banks |
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Apr 19 2012, 01:44 AM
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19 posts Joined: Apr 2012 From: PJ, Selangor |
Hi there guys.. Kindly add me to the buyer's list too.
CFE Solid White Booking Date: 14/03/2012 Got a very nice info here, thanks to u guys! |
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Apr 19 2012, 02:14 AM
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1,011 posts Joined: Mar 2010 |
erm, if not mistaken, prtn already used one piece door stamping gen2, tailor welded blanks door saga,exora, and preve i think, door sash + doorpanel, using double spot, robotic plasma welding.
I thinkla :-), dengor2 khabar anginla, ingress corp supply the door to prtn preve. So, better ask them lah, ha...ha... The door sash is made using roll forming method, only using this method, u can used advance high strength steel(ahss) aka ultra high tensile steel(uhss) as the material coz in cold forming method, its really hard to shape ahss to complex shape coz of its rigidity. Then the door structure is normally used high strength steel low alloy(hsla), and the trapezoidal impact beam, unique to proton n lotus, start in satria neo n upward(not tabular impact beam as some others using) inside the door also ahss using roll forming. So, combining the door sash n door panel is using robotic(not human, unless humanoid :-)) plasma welding, double spot, for strength n better corrosion resistant. Ops, forget to mentioned, all high strength steel using in car are galvanised steel(corrosion resistant coating steel). Plus, its now painted in white(thats why they called it body in white as the preve chasis during power of one event), then another layers of colors paint. So, in other words, using this method, the door will enhance its strength by combining two type of steels(ahss for door sash n hsla for door structure), n door sash is stronger than before as in using tailor welded blanks. Coz previously, only being protected by ahss impact beam inside the door, but door sash still not as strong as ahss(trip or dp), but now, the whole door has the same strength. Yup, i think better they (prtn)conceal with rubber next time, so that people will not do their own professional analysis. Malas betul nk taip panjang2 dlm hp, dont ask me again about this coz juz copy the word from some fella fren :-). Further info, maybe u can contact the above mentioned kot :-). 130kmh, pull to S mode, possible of course, the impossible for .....to catch u. Cvt, ask kristof ler. Or maybe u just visit autoworld to understand better, wet clutch cvt. The suggestion method, to overcome throttle lag from dbw, put in s mode, to overcome torque retention by cvt,before century sprint, when u waiting at junction, dont used footbrake(meaning car already stop, but its normal u still pressing the brake especially at steep road), used handbrake instead, ur right foot already at the gas pedal, when everything clear, then lift the handbrake and press the pedal :-). Wah, mcm pemberita sukan plak. If want to know why this n there in wet clutch cvt, n how it is differ from torque converter or dry clutch cvt, then refer to kristof, he's the expert. Me just a layman explanation, already explain about clutch, many didnt understand, then refer to him, he can answer u, deeply. Sorry fenomx, my children are sick, so, bz taking care of them after work. Aahhh., children just sleeping. Me, already tired . Salam. |
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Apr 19 2012, 02:23 AM
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177 posts Joined: Oct 2008 |
QUOTE(mat79 @ Apr 19 2012, 02:14 AM) 130kmh, pull to S mode, possible of course, the impossible for .....to catch u. Sorry fenomx, my children are sick, so, bz taking care of them after work. Aahhh., children just sleeping. Me, already tired . Salam. means i'm going to play with this, it wont spoil the gearbox right if i'm at highway driving very fast then get bored, pull to S mode directly and play with the blood rush ;D Harap harap your children will recover soon. Salam ya! |
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Apr 19 2012, 02:31 AM
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8,930 posts Joined: Nov 2005 From: Subang Jaya |
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Apr 19 2012, 02:41 AM
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834 posts Joined: Jul 2011 |
Just in case there are any confusion why use the handbrake as opposed to the footbrake, as recommended by mat79, that is because the wet clutch opens (disengages the cvt from the engine) when...
1. The gear is in N or P 2. The brake pedal is pressed (my understanding is it will not be opened as wide as in condition 1, therefore still creating drag.) So, from Kristof's explanation, my understanding is that, when you are pressing the brakes, and release it to press the gas pedal, the clutch needs time to close, hence the lag experienced. If you dont want to feel this throttle lag, you either... 1. Wait a moment before pressing the gas pedal, by when the clutch will be completely closed, or 2. use the handbrake to stop the car from moving, but keep you gear in D. This way the clutch never opens, and once you relase the handbrake the car is ready to go right away. The torque converter cvt does not have this lag issue because it simply does not open nor close. Mat79,pls correct me if I am mistaken. This post has been edited by dares: Apr 19 2012, 02:53 AM |
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Apr 19 2012, 02:42 AM
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3 posts Joined: Dec 2011 |
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Apr 19 2012, 02:53 AM
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8,930 posts Joined: Nov 2005 From: Subang Jaya |
QUOTE(dares @ Apr 19 2012, 02:41 AM) Just in case there are any confusion why use the handbrake as opposed to the footbrake, as recommended by mat79, that is because the wet clutch opens (disengages the cvt from the engine) when... 1. The gear is in N or P 2. The brake pedal is pressed (my understanding is it will not be opened as wide as in condition 1, therefore still creating drag.) So, from Kristof's explanation, my understanding is that, when you are pressing the brakes, and release it to press the gas pedal, the clutch needs time to close, hence the lag experienced. If you dont want to feel this throttle lag, you either... 1. Wait a moment before pressing the gas pedal, by when the clutch will be completely closed, or 2. use the handbrake to stop the car from moving, but keep you gear in D. This way the clutch never opens, and once you relase the handbrake the car is ready to go right away. Mat79,pls correct me if I am mistaken. QUOTE I have several question regarding CVT for exora bold(CVT3) and saga flx (CVT2): 1) I notice that exora bold still roll back on even slight /gradual slope(not-too-steep slope). Normal auto gear vehicle only will roll back when the slope is too steep, if it is not steep enough, it's will lock at there. Is there anyway to make CVT lock it when reach slight/gradual slope? It is kinda dangerous esp for new driver. You are correct. This is a know "issue", but is a design feature actually. Two things contribute to this: First thing is what we call idle neutral, unlike all regular older AT's that have a constantly dragging torque converter or clutch, we open our clutch (a wet clutch, more pressure = more drag, even more pressure closes it) almost completely when you are pressing the brake and standing still. this way fuel is saved. If you release the brake a little time is needed to apply pressure to our clutch again. that is when you roll back a little, rollback only occurs on hills steeper than 10%. secondly the engine cannot deliver a lot of power idling, when aircon is on, heavy car, on a hill, we can start closing the clutch in order not to roll back, but that will cause the engine to stall. When you apply trottle you will notice first the clutch opens a little bit so engine revs up, than we start closing the clutch, during revving up, you can encounter rollback. What to do? use handbrake in stead of brake, this way we not shift to neutral (we only read regular brake signal not handbrake), use enough trottle, this way the engine produces engough power to close the clutch in one move. http://forum.autoworld.com.my/index.php?sh...pic=103354&st=0 post #3 |
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Apr 19 2012, 02:53 AM
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177 posts Joined: Oct 2008 |
i feel like going to those thread to comment but i don't think so it is appropriate as i'm a thread started for preve some more, so i better stay mutual to avoid more unnecessary fights.
hey guys, wanna create a TT for Preve? |
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Apr 19 2012, 02:53 AM
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1,011 posts Joined: Mar 2010 |
QUOTE(dares @ Apr 19 2012, 02:41 AM) Just in case there are any confusion why use the handbrake as opposed to the footbrake, as recommended by mat79, that is because the wet clutch opens (disengages the cvt from the engine) when... yup, thumb up :-), only no 2 below, only use handbrake when car already stop(so no need to press the brake), dont stop the car using handbrake, nanti pusing2, bahaya ooo :-).1. The gear is in N or P 2. The brake pedal is pressed (my understanding is it will not be opened as wide as in condition 1, therefore still creating drag.) So, from Kristof's explanation, my understanding is that, when you are pressing the brakes, and release it to press the gas pedal, the clutch needs time to close, hence the lag experienced. If you dont want to feel this throttle lag, you either... 1. Wait a moment before pressing the gas pedal, by when the clutch will be completely closed, or 2. use the handbrake to stop the car from moving, but keep you gear in D. This way the clutch never opens, and once you relase the handbrake the car is ready to go right away. Mat79,pls correct me if I am mistaken. I know, typo. Just morning troll. Bubye, off now. |
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Apr 19 2012, 02:53 AM
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8,930 posts Joined: Nov 2005 From: Subang Jaya |
QUOTE(FenomX @ Apr 19 2012, 02:53 AM) i feel like going to those thread to comment but i don't think so it is appropriate as i'm a thread started for preve some more, so i better stay mutual to avoid more unnecessary fights. I no drive Preve, but i test-drive before. Boleh? hey guys, wanna create a TT for Preve? |
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Apr 19 2012, 02:54 AM
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Senior Member
1,011 posts Joined: Mar 2010 |
QUOTE(dares @ Apr 19 2012, 02:41 AM) Just in case there are any confusion why use the handbrake as opposed to the footbrake, as recommended by mat79, that is because the wet clutch opens (disengages the cvt from the engine) when... yup, thumb up :-), only no 2 below, only use handbrake when car already stop(so no need to press the brake), dont stop the car using handbrake, nanti pusing2, bahaya ooo :-).1. The gear is in N or P 2. The brake pedal is pressed (my understanding is it will not be opened as wide as in condition 1, therefore still creating drag.) So, from Kristof's explanation, my understanding is that, when you are pressing the brakes, and release it to press the gas pedal, the clutch needs time to close, hence the lag experienced. If you dont want to feel this throttle lag, you either... 1. Wait a moment before pressing the gas pedal, by when the clutch will be completely closed, or 2. use the handbrake to stop the car from moving, but keep you gear in D. This way the clutch never opens, and once you relase the handbrake the car is ready to go right away. Mat79,pls correct me if I am mistaken. I know, typo. Just morning troll. Bubye, off now. Ops, tq fenomx. |
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Apr 19 2012, 02:55 AM
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177 posts Joined: Oct 2008 |
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Apr 19 2012, 02:56 AM
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834 posts Joined: Jul 2011 |
QUOTE(Nightstalker1993 @ Apr 19 2012, 02:53 AM) So i got it right, right?QUOTE(mat79 @ Apr 19 2012, 02:53 AM) yup, thumb up :-), only no 2 below, only use handbrake when car already stop(so no need to press the brake), dont stop the car using handbrake, nanti pusing2, bahaya ooo :-). Oh ya sori. Hehe, thanks for correcting.I know, typo. Just morning troll. Bubye, off now. |
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Apr 19 2012, 02:57 AM
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8,930 posts Joined: Nov 2005 From: Subang Jaya |
QUOTE(FenomX @ Apr 19 2012, 02:55 AM) lai lai no problem, we can have some TT about preve also, maybe brainwash you then you go buy straight away ;D sorry bro, already spent more than 10k on my Waja in 6 months time in modifications. Don't think i'll change anytime soon Added on April 19, 2012, 2:58 am QUOTE(dares @ Apr 19 2012, 02:56 AM) you just missed the part where the CVT only detects input from the main brakes and not the handbrake. Thats why when you pull the handbrake, the clutch is still slightly engaged compared to when you press the brakes it is fully open This post has been edited by Nightstalker1993: Apr 19 2012, 02:58 AM |
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Apr 19 2012, 02:58 AM
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177 posts Joined: Oct 2008 |
QUOTE(Nightstalker1993 @ Apr 19 2012, 02:57 AM) sorry bro, already spent more than 10k on my Waja in 6 months time in modifications. Don't think i'll change anytime soon wahhhh come discuss make friends, it is about the communities ma, maybe can share share experience in automotive industries or driving experience and also learn something, i very noob in automotive industries one but now learning a lot from this thread. |
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Apr 19 2012, 02:59 AM
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Senior Member
8,930 posts Joined: Nov 2005 From: Subang Jaya |
QUOTE(FenomX @ Apr 19 2012, 02:58 AM) wahhhh Thanks to come discuss make friends, it is about the communities ma, maybe can share share experience in automotive industries or driving experience and also learn something, i very noob in automotive industries one but now learning a lot from this thread. |
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Apr 19 2012, 03:00 AM
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177 posts Joined: Oct 2008 |
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Apr 19 2012, 03:01 AM
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834 posts Joined: Jul 2011 |
QUOTE(Nightstalker1993 @ Apr 19 2012, 02:57 AM) sorry bro, already spent more than 10k on my Waja in 6 months time in modifications. Don't think i'll change anytime soon Cool, thanks Added on April 19, 2012, 2:58 am you just missed the part where the CVT only detects input from the main brakes and not the handbrake. Thats why when you pull the handbrake, the clutch is still slightly engaged compared to when you press the brakes it is fully open Correction to the first two points too, the clutch is fully opened when the footbrakes are applied. |
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