How to differentiate RWD and FWD?
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ppl kept say abt rwd or fwd but how to differentiate?
wad's the major differents? -
How to differentiate? Read the specs lor...Originally posted by kikenfire88:ppl kept say abt rwd or fwd but how to differentiate?
wad's the major differents?
Just kidding lah,... I think FWD gives better control than RWD -
Depends on how you drive... RWD give you slightly better handling imho... but only if you have good throttle control... if not, its quite easy to oversteer... while FWD cars tend to understeer more...Originally posted by TheDream:How to differentiate? Read the specs lor...
Just kidding lah,... I think FWD gives better control than RWD
but of course, this is what I feel... kinda prefer RWD to FWD cars... so I may be biased...
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Jack the car up, apply some throttle and see which axle spins.Originally posted by kikenfire88:ppl kept say abt rwd or fwd but how to differentiate?
wad's the major differents?
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no need... just start the car, shift into gear, floor the gas pedal and dump the clutch... also can see which wheel spinsOriginally posted by Kuali Baba:Jack the car up, apply some throttle and see which axle spins. -
same...i was like thinking..wat kind of question is this. hahaha just do wheel spin...and feel which set of wheels spins. for AWD...also can...but i dont think its good for the propeller shaft. hahaha.Originally posted by tomsss:no need... just start the car, shift into gear, floor the gas pedal and dump the clutch... also can see which wheel spins
Most of the cars nowadays are FF. Only cars like BMW,Mercs, porsche, Nissan Silvia...u know....go read the specs lah like one of the guys said so...hahaha FR have a better control. I remember last time my S13... hahaha shiok when cornering fast..but not too fast..will spin u off road...
eg: of a FR Car...
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actually... FWD are cars with the engine power going to the front wheels of the car... usually using transaxle gearbox, meaning transmission and axle in 1 housing. because most of the mechanical components are in front, thus saves weight and space.
RWD... meaning either engine in front, middle or rear, with engine power going to the rear wheels. Its heavier because of the addition of axles, drive shafts and dadada. Space can be also taken up by the axles and the longitudinal mounted transmission (that buldge in the middle of the interior).
FWD usually have limited hi-power traction capabilities (when the weight is shifted to the rear during acceleration) , especially cornering where understeer is it natural tendency. RWD, in my opinion, would be less fuel efficient at lower speeds, with all the additional connecting components to link the rear wheels from the engine. -
hm. RWD will be easier to do reverse parking.
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and why is that so???Originally posted by eviljustice:hm. RWD will be easier to do reverse parking. -
cos you're doing FWD when ya reversing?Originally posted by n0x:and why is that so??? some say FWD better control mah -
Ask.
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rwd have the differential unit at the rear axle which most of the time can be seen if look between the rear wheels...fwd juz straight axle at the rear axle...difference is rwd is pushing the vehicle and fwd is pulling..Originally posted by kikenfire88:ppl kept say abt rwd or fwd but how to differentiate?
wad's the major differents? -
So is AWD a better compromise between the two?
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Use Chain rule or Product rule.. later can try intergrating back.
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AWD would really be the best of both worlds..the problem with FWD is laying down all the power from the engine onto the road..as you know, when a car accelerates, the front of the car will lift up, so when you accelerate hard in a FWD car, the front of the car lifts up and the front tires cant get enough grip, thus FWD cars can't put all the power onto the road efficiently as compared to a RWD car..the backside of a car squats when you accelerate away, thus when a RWD accelerates, the rear tires actually generates more grip due to physics..and thus a RWD accelerates off better than a FWD, especially in the wet..Originally posted by TheDream:So is AWD a better compromise between the two?
AWD/4WD is good because any wheels can move, and thus 4WD cars have very good grip..the 4WD system will distribute power to the grippiest tires and thus ensuring good grip and stability..
RWD or AWD would still be the preferred mode of mobility for the car because these layouts provide better control of the car if you are an experienced driver..FWD has less skeletons in the closet, but it's taxing on the front axle to provide both driving and steering function.. -
however, the downside of AWD is increased overall maintenance. more moving parts usually equals more chances of mechanical failure. increased in overall weight due to additional awd components can give poorer fuel milage than fwd or rwd cars. tires will experience more wear in place for more traction control.Originally posted by alleggerita:AWD would really be the best of both worlds..the problem with FWD is laying down all the power from the engine onto the road..as you know, when a car accelerates, the front of the car will lift up, so when you accelerate hard in a FWD car, the front of the car lifts up and the front tires cant get enough grip, thus FWD cars can't put all the power onto the road efficiently as compared to a RWD car..the backside of a car squats when you accelerate away, thus when a RWD accelerates, the rear tires actually generates more grip due to physics..and thus a RWD accelerates off better than a FWD, especially in the wet..
AWD/4WD is good because any wheels can move, and thus 4WD cars have very good grip..the 4WD system will distribute power to the grippiest tires and thus ensuring good grip and stability..
RWD or AWD would still be the preferred mode of mobility for the car because these layouts provide better control of the car if you are an experienced driver..FWD has less skeletons in the closet, but it's taxing on the front axle to provide both driving and steering function..
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Yeah...that's the problem...but when was anything perfect in this world?Originally posted by tomsss:however, the downside of AWD is increased overall maintenance. more moving parts usually equals more chances of mechanical failure. increased in overall weight due to additional awd components can give poorer fuel milage than fwd or rwd cars. tires will experience more wear in place for more traction control. -
that is not a given for all 4WD systems...Originally posted by alleggerita:AWD would really be the best of both worlds..the problem with FWD is laying down all the power from the engine onto the road..as you know, when a car accelerates, the front of the car will lift up, so when you accelerate hard in a FWD car, the front of the car lifts up and the front tires cant get enough grip, thus FWD cars can't put all the power onto the road efficiently as compared to a RWD car..the backside of a car squats when you accelerate away, thus when a RWD accelerates, the rear tires actually generates more grip due to physics..and thus a RWD accelerates off better than a FWD, especially in the wet..
AWD/4WD is good because any wheels can move, and thus 4WD cars have very good grip..the 4WD system will distribute power to the grippiest tires and thus ensuring good grip and stability..
RWD or AWD would still be the preferred mode of mobility for the car because these layouts provide better control of the car if you are an experienced driver..FWD has less skeletons in the closet, but it's taxing on the front axle to provide both driving and steering function..
some older systems doesnt have traction control, LSD, electronic torque distribution blah... -
Haha... I was just about to mention that... not all 4WD systems are good... in fact... some are quite notorious for understeer too... especially if they don't have LSD, traction control etc...Originally posted by n0x:that is not a given for all 4WD systems...
some older systems doesnt have traction control, LSD, electronic torque distribution blah...
Thats why some consider the FR layout a near ideal layout for cars... -
So what's the disadvantage of RWD?
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how to check rwd or fwd? simple .... if your car is auto, put in to D mode .... handbrakes up .... footbrakes off ... step on gas a bit .. it car moves with handbrakes engaged its FWD ... but of cos try it on even roads only .. i learnt it from my driving instructor ... i dunno if it works for manual cars though
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Hello Agger.Originally posted by alleggerita:AWD would really be the best of both worlds..the problem with FWD is laying down all the power from the engine onto the road..as you know, when a car accelerates, the front of the car will lift up, so when you accelerate hard in a FWD car, the front of the car lifts up and the front tires cant get enough grip, thus FWD cars can't put all the power onto the road efficiently as compared to a RWD car..the backside of a car squats when you accelerate away, thus when a RWD accelerates, the rear tires actually generates more grip due to physics..and thus a RWD accelerates off better than a FWD, especially in the wet..
AWD/4WD is good because any wheels can move, and thus 4WD cars have very good grip..the 4WD system will distribute power to the grippiest tires and thus ensuring good grip and stability..
RWD or AWD would still be the preferred mode of mobility for the car because these layouts provide better control of the car if you are an experienced driver..FWD has less skeletons in the closet, but it's taxing on the front axle to provide both driving and steering function..
One thing about AWD is that its actually FWD/RWD default and when the ECU thinks that no traction than the other 2 wheels is actvated?Am i right?
Because when my family and i hit offroad trails with a bare 2L AWD(Honda CR-V),the AWD did not activate at a crucial point and we ended up stucked. -
I don't think that's true. I suspect you're describing a feature of "4"WD, which is available on SUVs. For passenger cars, I don't think there's such a featureOriginally posted by ceecookie:Hello Agger.
One thing about AWD is that its actually FWD/RWD default and when the ECU thinks that no traction than the other 2 wheels is actvated?Am i right?
Because when my family and i hit offroad trails with a bare 2L AWD(Honda CR-V),the AWD did not activate at a crucial point and we ended up stucked. -
errrr RWD will also move.Originally posted by hao_hao:how to check rwd or fwd? simple .... if your car is auto, put in to D mode .... handbrakes up .... footbrakes off ... step on gas a bit .. it car moves with handbrakes engaged its FWD ... but of cos try it on even roads only .. i learnt it from my driving instructor ... i dunno if it works for manual cars though -
RWD and AWD also can do the same... so what you've assumed is not correct.Originally posted by hao_hao:how to check rwd or fwd? simple .... if your car is auto, put in to D mode .... handbrakes up .... footbrakes off ... step on gas a bit .. it car moves with handbrakes engaged its FWD ... but of cos try it on even roads only .. i learnt it from my driving instructor ... i dunno if it works for manual cars though
The easiest way, to visually tell whether the car is a FWD or RWD... is just simply go to the rear of the vehicle, bend down to see if there is an axle and 2 shafts connecting to the rear wheels. If there is, then its a RWD or maybe AWD. If you dun see anything in between the rear wheels, nothing connecting to each other, other than the suspension components... then its a FWD.
OR, turn the steering wheel, full-lock to the left or right, and then look inside the wheel wells of the front wheels. If you see any rod (which is the driveshaft) that sticks out from the centre of the wheel, going into the engine... then thats a FWD or AWD. No shaft in front = RWD.
AWD will have driveshafts both front and rear.