Impianto elettrico LR 88 III

[jam]

Vi racconto cosa mi è successo. Nel pulire l'interno della macchina ieri sera ho tenuto (MOLTO STUPIDAMENTE !!!) la luce di cortesia accesa troppo a lungo. Ad un certo punto la luce si è spenta e (HABEMUS PAPAM) c'e stata una fumata bianca dal malloppo di fili che si intravede tra il cruscotto ed il volante. Ho staccato la batteria immediatamente (forse ho fatto bene a mettere lo stacca-batteria) ed ho aspettato che tutto si raffreddasse ed ho provato a vedere se tutto funzionava. Solo le frecce non si accendevano. Questa mattina ho riprovato e le frecce si accendevano ma non lampeggiavano. Dopo qualche km rifunzionava tutto perfettamente. ORA IO MI CHIEDO: - Dato che tutto sta migliorando rapidamente come per magia, tra quanto la macchia diventerà perfetta come quella di roby? - Domani mattina i fili cotti si saranno rigenerati con cablaggi di derivazione areonautica? - E' stato papa "Supercar Ratzinger" che mi ha protetto? - Ho avuto solo "CULO" a non ritrovarmi con la macchina cotta? Ora è dall'elettrauto, speriamo in bene. Grazie come sempre. Ciao Mauro

[Dee Snider]

secondo me è solo culo... che non ti sia cotta la macchina... se vai a prali portati un carroattrezzi dietro oppure fai una convenzione con tutti gli elettrauti di carignano-virle-cercenasco-buraiasco-pinerolo-ecc ecc

[roby65to]

Il carroattrezzi non è necessario in quanto le series una volta in moto possono funzionare anche senza corrente elettrica, piuttosto portati un estintore in caso di corto circuito. Comunque smonta il cruscotto per controllare cos' è successo, il fatto che ora tutto funzioni non significa che da un momento all' altro non si ripeta la cosa... Saluti. Roberto

[Easy Going]

......... LA LUCE DI CORTESIA ???!!! Pensavo di essere entrato per sbaglio nella sezione riservata al Range e invece no, si parla della luce di cortesia di un III serie. Roberto aiutami tu: per caso veniva montata di serie la luce di cortesia e, in caso affermativo, dove deve essere posizionata. Jam, non è che per caso hai usato la lampada alogena che avevi in sala (e che tua moglie sta ancora cercando) per illuminare gli interni del tuo gioiello. A parte gli scherzi, l'impianto elettrico del Land è abbastanza semplice e l'elettrauto non dovrebbe avere problemi nell'individuare i fili "cotti". Buona fortuna Stefano Serra P.S. ti consiglio di montare una lampadina meno potente nella luce di cortesia onde evitare in futuro il ripetersi del problema.

[jam]

No, hai letto bene, parlo proprio della luce di cortesia, il modello è questo. Ciao Mauro

[jam]

Tutto risolto, abbiamo scoperto come fanno a fare la fumata binaca per l'elezione del papa. Si prende un filo elettrico, lo si surriscalda in corrispondenza di una giunta con nastro isolante di almeno 25 anni, ed il gioco è fatto (per Papa "Mazinger Z" sono stati 28, ancora meglio), et voilà, fumogeni peggio che allo stadio. Ciao Mauro

[andreadavide]

Guarda che è una delle caratteristiche fondamentali degli impianti elettrici Lucas di funzionare sulla circolazione del fumo, invece che degli elettroni: Vedi l'articolo che riporto più sotto (mi dispiace per i non anglofoni)... The Smoke Theory of Electric Circuits or Electrical Theory by Joseph Lucas Positive ground depends upon proper circuit functioning, the transmission of negative ions by retention of the visible spectral manifestation known as "smoke". Smoke is the thing that makes electrical circuits work; we know this to be true because every time one lets the smoke out of the electrical system, it stops working. This can be verified repeatedly through empirical testing. When, for example, the smoke escapes from an electrical component (i.e., say, a Lucas voltage regulator), it will be observed that the component stops working. The function of the wire harness is to carry the smoke from one device to another; when the wire harness "springs a leak", and lets all the smoke out of the system, nothing works afterwards. Starter motors were frowned upon in British Automobiles for some time, largely because they consume large quantities of smoke, requiring very large wires. It has been noted that Lucas components are possibly more prone to electrical leakage than Bosch or generic Japanese electrics. Experts point out that this is because Lucas is British and all things British leak. British engines leak oil, shock absorbers, hydraulic forks and disk brakes leak fluid, British tyres leak air and the British defense establishment leaks secrets...so, naturally, British electrics leak smoke. Author Unknown ---------------------------------------------------------- When wires smoke, how come the smoke is not the same color as the wire? This is not completely true. When the smoke is in the wire, it is under pressure (called voltage). The pressure difference causes the color to change from the normal color we are used to. Not unlike the blood in our veins and arteries changing color due to the oxygen content. When the smoke escapes the wire and is exposed to air, the pressure is released, and the color reverts back to what we commonly recognize as smoke. The wire then changes to the color of the smoke that escaped. I would only question the last sentence of that description. It has been my experience that the wire turns a color directly oposite of the smoke. Not always true, I think it must depend on the composition of the smoke in question. I should have made it a little clearer; the color the wire becomes, is directly proportional to the escape velocity of the smoke. Higher velocities generate higher heat. This heat tends to burn the wire and affect the coloring. The statement was meant to be a generalization, indicating the fact that the color of the wire does infact change. Sorry for the miscomunication. I was speaking of electrcal smoke which is generally white. The spent smoke casing generally assumes a color somewhat near black after the smoke leaves. I can't stand it anymore! If, as you say, light bulbs suck up darkness and convert it to smoke which is transmitted (via wire) to a power source for recycling...why do car batteries go dead when lights are left on? Do car batteries (and flashlight batteries for that matter) have a limited amount of storage capability? Is it like a hard drive that gets so full that you have to double-space and then lose all data? Now you're getting it....... I thought you guys were smarter than this. Of course the battery stores the smoke. In fact it can store so much smoke that if you open the top and light a match, the resulting explosion can do serious damage. I'm sure you are aware that usually where there's smoke there's fire. If you connect the battery to a charger, the smoke is then returned to the wire (Remember, a light bulb wont work unless it is connected to a wire system) for the utility companies to use. Your hard drive analogy is a very good example. Our hardware guys might be onto something in their quest for superior wiring. I have noticed the unique method of of series/parallel wiring the power strips on our systems seems to prevent the smoke from getting out of the wires. A "Smoke Loop" of sorts. In the case of the "smoked" workstation recently, you should notice that this was a conventional single power strip installation. Since color is percieved by the cone shaped receptors in our eyes, and cones require more light that their rod shaped counterparts. Is the sky blue at night? At night the process including contraction of the pupil is visual purple by which the eye adapts to conditions of increased illumination when facing 300 candle power redeflecting devices. Since there is a spectrum of light that we as humans cannot see, I support the theory that everything is going up in smoke, we just can't see it. This may explain why the neighbors dog barks for no apparant reason. I think your basic understanding of smoke systems is remarkable. However I find a flaw with your theory. The battery is a reusable storage device for smoke. therefore, one would assume that some sort of one way valve (we can call it a diode) should be needed to prevent pressure flooding back into the system while at rest. Unlike the A/C system, the smoke system is collecting darkness at the headlights and converting it to smoke. This causes the system to fill up. The battery can contain much higher pressures and volumes than the wires. If this pressure exceeds the capacity of the wire, it will cause a rupture as you described. The rupture can be controlled by a sacraficial device known as a fuse. But this still doesn't eliminate the problem. Perhaps a two way valve (zener diode) is used to allow a small amount of pressure to return to the system, and partially equalize. I find this theory unlikely though, due to the increase in the force required to start the pump (which is now under pressure) working again... The smoke continues circulating through the system, due to the pressure differential in the battery (smoke pressure/vacuum reservoir). When the reservoir becomes depleted, the pressure simply equalizes everywhere in the system (similar to an A/C system when it's turned off) and stuff just wont work. Notice the relations: Work (W) = Force (F) x Distance (D); Force (F) = total difference in pressure (Dp) x Area (A). Therefore, the work done in a pressure system is: Dp x A x D. If the pressure differential (Dp) is reduced to zero then W = 0 x A x D = 0. The smoke only escapes the wires when a path is created between the pressure differential areas (@ either the reservoir or the pump) that has too little restriction. When this happens, the smoke travels through the wires so fast that the friction between the smoke and the outer walls of the wiring heats the wires until they rupture. The smoke continues to escape until its pressure is equalized with the atmosphere, or until the conduit that provides the path between pressure areas is severed. When this happens, the sudden drop in pressure allows the wires to "collapse" slightly and, being soo hot, as the edges of the ruptures and severed ends touch, the material becomes fused, sealing the system and retaining the remaining smoke. Don't forget, when the system is at rest, all the valves, (switches and relays) are closed, keeping the pressure areas separated. When restarting the pump, as long as everything is OK, the smoke pressure is equal on both sides of the pump and there is no net force on the pump when it begins operating again. Also, within the pump there are pressure/volume actuated one-way valves with restrictors built in, arranged in such a way that they keep excess smoke volume recirculating through an integral smoke loop, which maintains the pressure within manageable limits. The excess smoke, created by the light/smoke converters (headlights and other darkness absorbing devices), is changed back to darkness and dissipated in small unit concentrations so its dark effect is not locally observed. The smoke pump impeller (stator), converts smoke into magnetic flux which does work on the engine. Some of the excess work energy is dissipated through the cooling system and exhaust in the form of heat, while the remaining work energy is converted back to smoke and distributed evenly in small concentrations as you drive. This maintains the total quantity of smoke in the system at an average that does not change over time. shamelessly stolen from the British Car list of the late 1980's or early 1990's (I forget when)... Ho speso un sacco di soldi in donne, birra e Land Rover, tutti gli altri li ho sperperati.

[roby65to]

Le versioni station wagon avevano la luce di cortesia di serie, optional sulle hard top, sulle soft top non era prevista. Si accende con lo stesso interruttore delle luci quadro spostandolo di un' ulteriore scatto. Saluti. Roberto