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| Thread ID: 70604 | 2006-07-09 05:47:00 | Automatic transmission | Lizard (2409) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 469643 | 2006-07-10 05:22:00 | I have been intrigued by this correspondence . In 1967 we lived in Seattle - a city that makes Dunedin look pretty flat . Many stop signs were on very hilly roads and I was advised to get an automatic that stopped the car from going backwards when stationary - without using PARK . I had a Dodge charger and it did just that . I wonder now if this is a design just not available anymore . Anyway living in Christchurch I don't need it . Tom I have noticed that the MOPAR (Dodge TorqueFlite) transmissions seem to hold pretty well against rearward rolling . I haven't actually investigated this too deeply, but I feel it is because of the ratio of the reduction gears while in low or first geat at a stop . The transmission will have followed the road speed down to each minimum rpm vs driveshaft (rpm = idle / road speed = 0) shift point thru the effect of the governor, but when the transmission is at a stop, it is still "in gear", that is: the forward and low/reverse clutches are applied; the reverse band and the intermediate band are NOT applied, but the torque convertor is still grinding away trying to turn the input shaft and drum . The torque value because of ratios and mechanical dis-advantages will be sufficient to hold the vehicle from rolling backwards . Those old MOPAR TorqueFlites are not produced any more as they were basically fuel drinkers without a locking convertor to conserve fuel . They were very tough and pretty unbreakable, but inefficient . Some Jeeps used the "Baby TorqueFlite" the 904 version . They bastardized them with Renault convertors and electronics in a vain attempt to make them more efficient . . but they had very high failure rates . The MOPAR-Renault-Fiat-Borgward-Zundapp consortium is just junk . BTW: it took me six attempts to post this . . I got Server Not Found and time-outs . |
SurferJoe46 (51) | ||
| 469644 | 2006-07-10 08:57:00 | Mine is a TS-R. Does anyone know what those letters stand for? I think you apply too much logic to assume that the letters really mean anything at all on a car. Think about all the various combinations many makers use: EX, LX, JLX, XR, , XJ, RS, XK, XS, ZE, ZR, ZX, ZZ, GX, GTB, RSB, DL, XL7, SX, NX-R, FTO and about {500} others. (note they have not yet done an SEX model, but perhaps one day someone in Japan will slip) |
godfather (25) | ||
| 469645 | 2006-07-10 09:40:00 | Wow. That's the first time any man has accused me ( an admitted ignoramus about internal combustion engines & related topics) of being too logical about a car. Can I have that engraved in stone, Godfather? For my garage wall... Any more like that and you'll ruin my reputation for asking about the vehicle's colour first... (20 minutes & several attempts later - Darn. This won't send. Might be the site's decision to stop me getting to 1000 posts?) |
Laura (43) | ||
| 469646 | 2006-07-10 09:55:00 | if i know i'm gona have to stop on a steep hill..i'll stop..and then let my left feet take over the breaks.. left foot braking...i thought that was the norm with auto's ?? |
tweak'e (69) | ||
| 469647 | 2006-07-10 12:08:00 | some says driving with both feet is dangerous..and i was taught to drive with only my right foot with no clutch..left foot does nothing but i do know some people that drives with both feet |
heni72847 (1166) | ||
| 469648 | 2006-07-10 21:52:00 | I think you apply too much logic to assume that the letters really mean anything at all on a car. Think about all the various combinations many makers use: EX, LX, JLX, XR, , XJ, RS, XK, XS, ZE, ZR, ZX, ZZ, GX, GTB, RSB, DL, XL7, SX, NX-R, FTO and about {500} others. (note they have not yet done an SEX model, but perhaps one day someone in Japan will slip) It's true that most of the letters mean nothing, though some car manufacturers do apply some logic in their labelling (albeit occasionally twisted logic). For example, while not being a fan of BMWs, their labelling system is for the most part logical - a BMW 320i is a 3 Series 2.0L, the 318i is a 3 Series 1.8L etc. Though the letters of most car models mean nothing, that doesn't prevent people creating meaning for them (particularly on long boring car trips). Same for car names - e.g. HONDA: Had One, Never Did Again. FORD: Failure On Race Day. TORANA: Tons Of Rust And No Acceleration. /ducks. :D Lizard |
Lizard (2409) | ||
| 469649 | 2006-07-10 23:55:00 | If you only use the "Park" on the transmission and don't at least back it up with the parking brake, you run the risk of internal transmission damage in the event another vehicle makes hard enough contact while yours is parked . I have seen cases cracked from this sort of impact, and there are a number of other things that can be bent into the wrong position making "Park" questionable at the least from that point on . Would this applie to a front wheel drive car as the hand brake only works on the rear wheels . Trevor :) |
Trev (427) | ||
| 469650 | 2006-07-11 00:13:00 | Would this applie to a front wheel drive car as the hand brake only works on the rear wheels . Trevor :) It's a trade-off for FWD vehicles . The Subaru (again) had this handled with the front brakes also being the parking brakes too! But here's a neat thing about FWD's . . they get twice the braking effect for having both the parking brake set and the transmission in Park too! You know . . . . the more I look at Subarus, the more I like their ideas! It was fun in the older ones doing a clutch job . . . one man and he pulled the engine out thru the hood to access the clutch . . . . much easier than pulling cv-joints and linkage etc . . . just 4 bellhousing bolts, after the spare tire was jerked out and a pair of engine mount bolts . Unplug a couple of very neat wire looms and if you were particularly neat, leave the radiator in place! Throw the whole engine on the bench and have your way with it there . Anyone ever have the fun of the late 1960's Datsun 310's or F-10's for a clutch? Like changing a record on a turntable . . . very easy and a lot of fun too! The clutch was in the front of the engine a la' Saabs, and you had a small cover over the input shaft . . . 4 bolts I think, pull the shaft, unbolt the pressure plate and pull the whole thing out without seperating the engine from the transmission at all! Damn! . . . wish they still made them! Let's not talk about Audis, though! |
SurferJoe46 (51) | ||
| 469651 | 2006-07-11 01:42:00 | You know . . . . the more I look at Subarus, the more I like their ideas! I've had 5 Subarus Joe (just wore them out with 'overuse' . . . sigh), both manual and auto, legacy and outbacks . Some of the outback models had the 'hill hold' mechanism, as well as a nifty thing that when you hit the brakes really hard the nose would be lifted up (presumably so that you went straight into the back of the truck in front and not under it!) Current one is an 03 B4 twin turbo (chipped) auto/tiptronic . . . . hell of a lot of fun to drive, but don't look under the hood, especially if you want to find the dipstick (that's the oil measuring thingie-ma-jig) . Not sure what the newer ones are like to take the engine out, but the mechanic sighed when I showed him my new toy :o |
Shortcircuit (1666) | ||
| 469652 | 2006-07-11 02:09:00 | It's true that most of the letters mean nothing, though some car manufacturers do apply some logic in their labelling (albeit occasionally twisted logic). For example, while not being a fan of BMWs, their labelling system is for the most part logical - a BMW 320i is a 3 Series 2.0L, the 318i is a 3 Series 1.8L etc. Though the letters of most car models mean nothing, that doesn't prevent people creating meaning for them (particularly on long boring car trips). Same for car names - e.g. HONDA: Had One, Never Did Again. FORD: Failure On Race Day. TORANA: Tons Of Rust And No Acceleration. /ducks. :D Lizard I specifically omitted "meaningful" model numbers though, just the meaningless "letters" that they tend to use. One of my cars is an "RS", which could be interpreted as "Rally Sport" by genarally accepted nomenclature, but who would ever engage in rally sport in a convertible....? But even BMW have strayed, with E46 and E90 series 318 having a 2.0 litre motor in some markets, and a 316 having a 1.8 litre engine. And Ford actually stands for "fix or repair daily" |
godfather (25) | ||
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