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alex230ro
post Nov 1 2005, 04:36 PM
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Cum multi dintre voi stiu deja acum cateva luni am achizitionat un autoblocant (LSD) de 4,10 tot de atunci stau si analizez care ar fii efectele acestuia asupra masinii.Iata ce rezultate am obtinut folosind un programel numit Car Test:
1.masina echipata cu diferentialul standard de 3,23 avem:
0-40 km-2,1 s 0-80km-5,9 s 0-100km-8,9 sec top speed 207,4 km 0-100m 6,9 s 0-400m 16,3s @140,3 km
0-1000 m 29,8s @174,6 km viteze maxime atinse in treptele de viteza:1-55km 2-97km 3-153km 4-216 km toate la 6000rpm
2.masina cu LSD 4,10 0-40km-1,7s 0-80km-6,1s 0-100km-8,5s top speed 207,1km 0-100m 6,7s 0-400m 16,1@138,9
0-1000m 29,5s @175,5 km viteze maxime atinse in treptele de viteza:1-44km 2-76km 3-120km 4-169km la fel la 6000 rpm.
Din ce vad montarea ar insemna un demaraj mai bun pana la 100 km si un sprint mai bun in aproape toate celelante ipostaze fata de masina de serie mai putin 0-80 km ,dar din ce vad viteza maxima atinsa in treptele 1-4 va scade dramatic.Am avea :pro 4,10 demaraj superior reprize mai rele avantaj LSD contra:consum marit comportament periculos pe carosabil ud sau acoperit de zapada si motorul va merge mai turat.Astept pareri legate de aceasta schimbare.
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Robert
post Nov 1 2005, 04:49 PM
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De la 3.23 (un raport cam ciudat, nu era cumva 3.25?) la 4.10 mi se pare un salt cam mare.
Demarajul prin oras va fi spectaculos, dar cred ca la drum intins masina va fi neplacut de condus (prea turata) la o viteza de croaziera rezonabila (120+ Km/h) si va consuma cam mult.

Dar, daca tot il ai, pune-l pe masina si testeaza-l. E mult prea simplu sa-l montezi si apoi (daca e cazul) sa-l demontezi - deci nu are rost sa te bazezi pe pareri/impresii, ci pe o evaluare concreta.
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Ionut
post Nov 1 2005, 05:03 PM
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fa altfel pastreaza blocantul din cel de 4,10 si monteaza raportul din cel de 3,23...si gata simplu si eficient.... biggrin.gif


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TiL
post Nov 1 2005, 05:10 PM
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Da da da, pune-l. Si daca nu-i bun, da-mi-l mie. N-ar fi mare diferenta de la 3.91 la 4.1.

Ma tem ca o sa te saturi repede de el pentru ca e mult prea scurt. Daca mi se pare scurt 3.91 pentru motor de 1.8, ce sa mai zic de 4.1 pentru 2.3litri. Dar ai un mare atu la mansarda pe care nu-l mai mentionez ca-l stie toata lumea biggrin.gif Bineinteles explicatia de mai jos iti va fi total inutila:
consumul poate sa nu-ti creasca daca-ti adaptezi stilul de condus, avand rapoarte mici poti sa schimbi la turatii mici. In Bucuresti nu ai nevoie sa treci de 1500rpm.


aaaa, diful tau nu-i 3.45?


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316i
post Nov 1 2005, 05:25 PM
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TiL>vezi ca eu sunt demult primul pe lista daca vrea sa-l dea. :finga:
Si nu, dif-ul lui nu e de 3.45 e de 3.23


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TiL
post Nov 1 2005, 05:49 PM
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QUOTE (316i)
TiL>vezi ca eu sunt demult primul pe lista daca vrea sa-l dea.  :finga:
Si nu, dif-ul lui nu e de 3.45 e de 3.23

atunci 3.25?

Se inseala carfolio.com?

http://www.carfolio.com/specifications/mod...car/?car=128755 '83 323i 140cp
http://www.carfolio.com/specifications/mod...car/?car=128744 '83 323i 150cp 2 usi
http://www.carfolio.com/specifications/mod.../car/?car=30921 '84 323i 150cp 4 usi


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Robert
post Nov 1 2005, 08:50 PM
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QUOTE (jaffar)
liti explica robert de ce nu e bine sa scoti doar ambreiajele si sa le muti in diferentialul tau

Mai jos e un "copy & paste" a doua posturi de-ale mele, din mai 2005, de pe forumul in care activam la acel moment:

Faza cu cartusul de ambreiaje mi-a trecut si mie prin cap. In urma cu vreo 3 ani, era cat pe-aci sa cumpar un diferential E28 cu carcasa mare, raport 3.07:1, de la care sa iau ambreiajele si sa le pun in diferentialul meu 3.25:1 (care are ambreiajele cam duse).
Dar unul de pe un forum E28 (respectat in comunitatea respectiva) m-a sfatuit sa ma potolesc, deoarece pozitionarea si reglarea corecta a pinionului de atac fata de coroana nu este job pentru incepatori, ci pentru un atelier care are experienta cu asa ceva. Ca amator aflat la prima experienta de acest gen, poate sa iti iasa bine, dar numai dintr-un noroc chior. Sau sa obtii un diferential zgomotos, care se auto-canibalizeaza.
Rezultatul a fost ca m-am potolit.
[...]
Este dificil. Se folosesc niste saibe distantiere, de diferite dimensiuni. Pui saibe mai groase sau mai subtiri, in functie de modul de angrenare a coroanei dintate cu pinionul de atac. Ai doua grade de libertate: in lungul axului pinionului si in lungul axului coroanei. Se foloseste un fel de vopsea, iar in functie de forma si grosimea petei de vopsea care ramane pe dintii coroanei te prinzi daca angrenajul este corect.
Ce am scris aici este doar ceva teorie, din ce am mai citit pe vremuri, la modul empiric.
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Ionut
post Nov 1 2005, 11:04 PM
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eu unul voi schimba raportul diff-ului meu....de la 2,79 la 3,46....cand si daca o sa fie bine va anunt....deocamdata tre sa gasesc diff-ul de 3,46... biggrin.gif


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ex...e60 520i

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alex230ro
post Nov 2 2005, 10:26 AM
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Intre timp am mai facut aseara niste simulari 5-100 km sau rolling start acceleration rezulatele sunt uluitoare:
1.diff standard avem
ROLLING START ACCELERATION RESULTS

Starting vehicle speed: 5 kmh
Starting engine speed: 540 rpm
Starting gear: 1st

Optimum Shift Points:
1st 6000 rpm @ 55 kmh
2nd 6000 rpm @ 97 kmh
3rd 6000 rpm @ 153 kmh
4th 6000 rpm @ 216 kmh

Time to Speed:
5- 40 kmh............ 3.5 sec.
5- 60 kmh............ 5.5 sec.
5- 80 kmh............ 7.3 sec.
5-100 kmh............ 10.3 sec.
5-120 kmh............ 13.6 sec.
5-140 kmh............ 17.6 sec.
5-160 kmh............ 24.5 sec.
5-180 kmh............ 34.3 sec.

Time to Distance:
0- 100 m............ 8.2 sec.
0- 400 m............ 17.6 sec.
@ 140.0 kmh
0-1000 m.(1 km)..... 31.1 sec.
@ 174.5 kmh

Top Speed............. 207.4 kmh
2. diff LSD 4,10 avem:
ROLLING START ACCELERATION RESULTS

Starting vehicle speed: 5 kmh
Starting engine speed: 690 rpm
Starting gear: 1st

Optimum Shift Points:
1st 6000 rpm @ 44 kmh
2nd 6000 rpm @ 76 kmh
3rd 6000 rpm @ 120 kmh
4th 6000 rpm @ 169 kmh

Time to Speed:
5- 40 kmh............ 1.8 sec.
5- 60 kmh............ 3.8 sec.
5- 80 kmh............ 6.2 sec.
5-100 kmh............ 8.6 sec.
5-120 kmh............ 11.5 sec.
5-140 kmh............ 16.4 sec.
5-160 kmh............ 21.9 sec.
5-180 kmh............ 32.1 sec.

Time to Distance:
0- 100 m............ 6.8 sec.
0- 400 m............ 16.1 sec.
@ 138.8 kmh
0-1000 m.(1 km)..... 29.6 sec.
@ 175.6 kmh

Top Speed............. 207.1 kmh
Se observa ca in acest caz diff 4,10 ofera un castig de minim 1 sec in aproape toate categoriile


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316i
post Nov 2 2005, 10:46 AM
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ai tot facut calcule peste calcule, da' pe masina il mai pui? biggrin.gif


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uwe
post Nov 2 2005, 08:04 PM
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eu am 4.10 la 325ul meu si sunt multumit nu ezita sa il montezi...
(este cumva diferentialul de la HAI?)
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Rabanne
post Nov 2 2005, 11:57 PM
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HAI a vandut un 4.10 si eu nu stiu?Va ucid!


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alex230ro
post Nov 3 2005, 10:12 AM
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biggrin.gif Diferentialul il am de vro 2-3 luni smile.gif si da este de la HAI mersi pt incurajari Uwe -consumul cum e? a mai crescut?


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TiL
post Nov 3 2005, 11:36 AM
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Rabanne, sa nu spui ca diferentialul asta facea toata treaba pe HAI iar cipul era pus asa, la misto biggrin.gif Glumesc.

Alex, pune-ti odata jucaria! biggrin.gif/


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Gabi_323i
post Nov 3 2005, 02:18 PM
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dap, e de la hai, ghici cine l-a luat smile.gif


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uwe
post Nov 3 2005, 07:20 PM
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am sa va raspund la toti pe rand

rabanne: diferentialul a fost vandut exact inainte sa fiu asa apropiat de HAI (ca prieteni), si fii sigur ca daca aflam de el era al meu smile.gif (de rezerva)

alex230ro: pentru mine consumul e irelevant ;ultima oara cind am facut consumul era de 9 oras si maxim 7 afara iar asta se intampla acum 2 ani si aveam motor de 1.8 biggrin.gif parerea mea este ca la un consum de 12-13 ce mai conteaza inca 0.5 l/100km ;am mai spus si o mai spun eu am ursul numai de distractie si pt. faptul ca sunt disperat de acest model;
eu unul daca as fi in locul tau nu as sta pe ganduri

til: am sa iti raspund si tie cu toate ca nu m-ai intrebat; in primul rand HAI are diferential de 3.64 (dar cam pe duca) iar un diferential de 4.10 intradevar ajuta la demaraj dar e cam turata in afara orasului la 3000rot/min in treapta 5 am cam 110-115km/ora
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TiL
post Nov 4 2005, 12:04 PM
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Intrebare: ce raport are diferentialul meu de pe 318i '86? Pe carfolio am gasit 3.91.
uwe, stiu senzatia, de-asta spuneam ca mi se pare cam scurt chiar si diferentialul meu (folosesc masina mai mult pentru drumuri lungi).


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Robert
post Nov 4 2005, 03:43 PM
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Ca fapt divers, stiati ca, in anii '80, Alpina a montat pe modelele sale diferentiale cu radiator de racire a uleiului?
Practic, era o pompa de ulei fixata pe carcasa diferentialului si antrenata prin curea. Pozele cred ca sunt sugestive.
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TiL
post Nov 4 2005, 04:27 PM
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Tot ca fapt divers, interceptore, baga o poza cu diferentialul tau. Mi-aduc aminte ca e o namila si n-am inteles de ce. De fapt ne vedem in week-end si o sa ma uit mai bine.


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uwe
post Nov 4 2005, 07:32 PM
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QUOTE (TiL)
Intrebare: ce raport are diferentialul meu de pe 318i '86? Pe carfolio am gasit 3.91.  
uwe, stiu senzatia, de-asta spuneam ca mi se pare cam scurt chiar si diferentialul meu (folosesc masina mai mult pentru drumuri lungi).


mda ,asa e...intre 4,10 si 3,91 nu este mare diferenta sau cel putin insesizabila
cat despre diferentialul tau , de cat sa presupui ca ai avea unul , mai bine bagate frumusel sub masina si verifica....este cel mai eficient
parerea mea smile.gif
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