Stødstang I en overliggende ventilmotor er det stødstangen, der overfører bevægelsen fra knastakslen nede i motorblokken op til ventilerne i topstykket. Det er en simpel del i sin opbygning, men præcisionen i længde og diameter har stor betydning for, hvordan hele ventilstyringen kommer til at fungere i praksis. Stødstangens rolle i ventilstyringen Når knastakslen roterer, skubber den stødstangen opad, som igen bevæger vippearmen, der åbner ventilen i topstykket. Hele denne mekanik er afhængig af, at stødstangen har præcis den rigtige længde, fordi afvigelser kan ændre ventilgeometri og den indstilling, som løftere og vippearme arbejder med. Er stødstangen for lang eller for kort, kan det give unormal ventilspil, øget slid på vippearme og løftere, eller i værste fald forhindre, at ventilerne lukker helt til, hvilket kan skade både ventil og ventilsæde over tid. Ved motorbygning eller renovering af topstykket er det derfor almindeligt at kontrollere stødstangens længde nøje, i stedet for blot at genbruge den gamle eller vælge en tilfældig standardlængde, især hvis der samtidig er skiftet knastaksel, topstykke eller andre dele i ventilstyringen, som alle påvirker det samlede mål. Derfor skal længden kontrolleres ud fra den samlede motoropbygning og ikke vælges ud fra et generelt standardmål. Længde og diameter skal måles, ikke gættes Stødstænger fås i mange længder, fra omkring 5 til 12 tommer, og i flere diametre, typisk mellem 5/16 og 7/16 tommer. Den rigtige kombination afhænger helt af den konkrete motoropbygning, herunder knastakslens profil, topstykkets udformning og hvilke vippearme og liftere der bruges i den pågældende motor. En tommelfingerregel er, at ændringer i en enkelt af disse komponenter ofte kræver, at stødstangens længde kontrolleres igen, fordi hele kæden af dele påvirker hinanden og skal fungere som en samlet helhed. Diameteren har samtidig betydning for stivheden: en tyndere stødstang kan bøje en anelse under belastning, hvilket især mærkes ved højere motoromdrejninger, mens en tykkere stødstang giver mere præcis og direkte kraftoverførsel fra knastaksel til ventil. Ved opbygning af en motor til mere krævende brug er det derfor værd at overveje en større diameter, hvis pladsen i topstykket tillader det uden at gå ud over andre komponenter. Ud over de mest almindelige diametre findes der også mellemstørrelsen 11/32 tommer, som på nogle motorer giver en god balance mellem vægt og stivhed. Spidstype og materiale Stødstænger findes med forskellige spidstyper, hvor de mest almindelige er ball-ball og ball-cup, og valget skal matche udformningen af de vippearme og liftere, stødstangen skal arbejde sammen med i den færdige opbygning. En forkert spidstype kan give unormalt slid eller en forbindelse, der ikke sidder stabilt under drift, hvilket kan give forkert kontakt og øget slid. Ud over selve stødstængerne findes der også specialværktøj, som gør det muligt at måle den korrekte længde præcist, før den endelige stødstang bestilles eller tilpasses til motoren. Denne form for opmåling er særlig nyttig ved motorbygning, hvor flere dele i ventilstyringen skiftes samtidig, fordi det reducerer risikoen for at ende med stødstænger, der ikke passer helt præcist til resten af opbygningen. Uanset om opgaven er en mindre reparation eller en større ombygning, er præcision i disse mål afgørende for, at ventilstyringen fungerer roligt og holdbart over tid. Specialværktøjet til opmåling bruges typisk sammen med en prøvestødstang, hvor længden gradvist justeres, indtil ventilspillet er korrekt, hvorefter den endelige, faste stødstang bestilles i den fundne længde.

Stødstang

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Hjem Udstyr & Tilbehør Motor Knastaksel Stødstang

100 resultat

Specialværktøj 6
PUSHROD LENGTH CHECKING 6.125" - 11.500" SIZES
AFW98-2050

PUSHROD LENGTH CHECKING 6.125" - 11.500" SIZES

PUSHROD LENGTH CHECKING 6.125" - 7.500" SINGLE ROD
AFW98-2050-1

PUSHROD LENGTH CHECKING 6.125" - 7.500" SINGLE ROD

PUSHROD LENGTH CHECKING 7.500" - 8.700" SINGLE ROD
AFW98-2050-2

PUSHROD LENGTH CHECKING 7.500" - 8.700" SINGLE ROD

PUSHROD LENGTH CHECKING 8.500" - 9.800" SINGLE ROD
AFW98-2050-3

PUSHROD LENGTH CHECKING 8.500" - 9.800" SINGLE ROD

PUSHROD LENGTH CHECKING 9.700" - 11.00" SINGLE ROD
AFW98-2050-4

PUSHROD LENGTH CHECKING 9.700" - 11.00" SINGLE ROD

Pushrod Length Checker 9.700" - 11.000"

Pushrod Length Checker 9.700" - 11.000"

PUSHROD LENGTH CHECKING 10.20" - 11.50" SINGLE ROD
AFW98-2050-5

PUSHROD LENGTH CHECKING 10.20" - 11.50" SINGLE ROD

Pushrod Length Checker 10.200" - 11.500"

Pushrod Length Checker 10.200" - 11.500"

Stødstang 24
Stødstang
COM7131-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 8.280" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 8.280" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Engine Push Rod
COM7131-16

Engine Push Rod

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 8.280" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 8.280" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7131-8

ENG PUSH ROD SET

Magnum 8.280" Long, .080" Wall, 3/8" Diameter Pushrod Set Of 8

Magnum 8.280" Long, .080" Wall, 3/8" Diameter Pushrod Set Of 8

Stødstang
COM7141-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 9.250" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 9.250" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7141-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 9.250" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 9.250" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7141-8

ENG PUSH ROD SET

Magnum 9.250" Long, .080" Wall, 3/8" Diameter Pushrod Set Of 8

Magnum 9.250" Long, .080" Wall, 3/8" Diameter Pushrod Set Of 8

Stødstang
COM7155-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 6.850" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 6.850" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7156-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 6.900" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 6.900" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7156-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 6.900" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 6.900" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7157-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.150" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.150" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7157-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.150" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.150" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7158-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.200" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.200" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7158-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.200" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.200" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7159-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.250" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.250" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7160-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.300" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.300" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7160-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.300" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.300" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7161-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.350" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.350" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7161-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.350" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.350" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7162-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.400" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.400" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7162-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.400" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.400" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7163-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.450" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.450" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7164-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.750" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.750" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

ENG PUSH ROD SET
COM7164-16

ENG PUSH ROD SET

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.750" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, These 7.750" Long, 3/8" Diameter, Magnum Pushrods Feature A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

Stødstang
COM7165-1

Stødstang

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.850" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance ...Vis mere

Heat-Treated For Guide Plate Compatibility Then Black Oxide Coated, This 7.850" Long, 3/8" Diameter, Magnum Pushrod Features A Durable, One-Piece .080" Wall Construction For Use In Street Performance And Mild Race Applications.

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