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Koeling: visco koppeling : Techniek

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Koeling: visco koppeling

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Koeling: visco koppeling

Berichtdoor Mbmb » 06 jul 2017, 03:58

Dag mede W126 fanaten, graag deel ik volgende ervaring met jullie.


Ook mijn bolide begon motorkoeling problemen te vertonen....Ahhh nee....Volgens mij krijg je over miljoen+ hits als je Googled naar motor koeling problemen w12x..., ja het kan alles zijn en genoeg voorbeelden van torenhoge kosten en nogsteeds geen resultaat!

Nou mijn speurwerk, zowel onder de motorkap en online, heeft dit tot de volgende conclusie geleid:

9 van de 10 keer (of zelfs 99 van de 100 keer) ligt t aan de visco koppeling als er geen evidente gebreken te vinden zijn (lekkages e.d.) en deze kun je vaak zelf repareren [WINKING FACE]

Ik heb die van mij gerepareerd en wat een verschil in toerental bij stationair draaien van de ventilator, volgens mij draait ie nu 10x sneller en de koeling navenant. Zelfs bij buiten temp van 37C en veel kickdown komt temp niet boven 85C!!

Hoop dat dit bijdraagt aan de topic om onnodige kosten te verkomen....


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Re: Koeling: visco koppeling

Berichtdoor Coupe280 » 06 jul 2017, 07:16

Bedoel je met repareren , vastzetten??
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Re: Koeling: visco koppeling

Berichtdoor Mbmb » 06 jul 2017, 08:50

Op de visco zit een bi-metaal schakelaar, bij hoger temp wordt een pin ingedrukt die de koppeling aanduwt waardoor ventilatir sneller draait. Vaak is contact bi-metaal en pin los of besmeurd met vuiligheid en roest. Beide goed schoonmaken en goed insmeren en daarna bi-metaal afstellen(buigen) zodat bi-metaal en pin contact maken.


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Re: Koeling: visco koppeling

Berichtdoor Mbmb » 06 jul 2017, 13:21

Beste BenzHans de Tweede, zoals ik begon in mijn omschrijving hebben veel young/oldtimer Benz (en andere merken) vaak een hoofdpijn dossier aan problematische motorkoeling. Er zijn zelfs gevallen dat men t gewoonweg opgeeft en een afslag sloop neemt. Zeker na t vervangen van Radiator ($$), waterpomp ($$), airco-fan, thermostaat, etcc.. maar de visco vergeet omdat deze er nog goed uitziet..

Het is begrijpelijk dat de radiator als hoofdverdachte wordt aangemerkt, maar is hooguit medeverdachte. Waarom denk je dat tegenwoordig visco fans niet meer worden gebruikt maar ipv ampere vretende elektrische fans installeren?


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Re: Koeling: visco koppeling

Berichtdoor Vlim » 06 jul 2017, 22:15

Vergeet ook de temperatuurmeter zelf niet. Die wil ook nog wel eens verkeerde waardes aangeven :)

Ik heb bij het Malaga proof maken van mijn 500SE een geblokkeerde visco en grotere radiator geplaatst. Temperatuur blijft nu ook bij filerijden in warm weer prima.
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Re: Koeling: visco koppeling

Berichtdoor Mbmb » 07 jul 2017, 02:39

Ok, maar geblokkeerde visco..., ??!! Is dat niet gevaarlijk bij hoge toerental.... ben bang dat de fanbladen niet ontworpen zijn voor 5000+ toeren... En je wilt niet in de buurt van metalen fan bladen zijn als deze bij 5000+ ltoeren losschieten....heb ik t nog niet over de ravage onder de motorkap...


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Re: Koeling: visco koppeling

Berichtdoor Vlim » 07 jul 2017, 12:13

Werkt prima...
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Re: Koeling: visco koppeling

Berichtdoor Mbmb » 07 jul 2017, 13:03

Ok, houdt ons op de hoogte van de duurzaamheid van deze oplossing. Trouwens de poelie van de visco is stuk kleiner dan de krukaspoelie dus denk dat jouw ventialor mischien wel 10000+ draait bij volbelasting.....


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Re: Koeling: visco koppeling

Berichtdoor RD500SEC » 08 jul 2017, 11:00

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