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Das Dellorto VHST Vergasertopic

Werner Amort

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  • 1 month later...

Es geht um den "red" VHST, mit Ramair, Nebendüse Luftbremse = 1 mm Durchmesser

Lässt sich in allen Lastbereichen gut einstellen, nichts auffälliges.

Nur die LL-Drehzahl ist viel zu hoch, Drehzahl will nicht so richtig auf Standgas zurück, weil zu mager, ND zu klein. Ich bin schon bei ND S44 angekommen aber immer noch zu mager.

Ich habe deshalb die Luftbremse für die ND jetzt komplett zugemacht und siehe da, jetzt dreht der Motor nach Gasgeben zügig auf LL zurück.

Nun meine Frage: Woher bekommt die ND bei komplett geschlossener Luftbremse die erforderliche Luft ( ich habe u.a. die Gemischregulierschraube auf Leckage geprüft, aber das ist nichts)?


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  • 2 months later...

Hello, sorry for writting in english... Yesterday I got hands on a stage6 vhst 28. I would like to try it on classic polini setup (Polini 133GG, membran polini 24mm, 2.56 with original 4th, Proma exhaust). 
I am thinking about the setup:

min s38
max 104
slide 50
choke 60
AQ 266 or AQ264
needle ??? 

Which neeedle based on your experince would you try?
i.e. - I already have D22, D25 and D34.
Thanks for any help or advise! ;)

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S38 will be too big

(I guess S36 but please try S38 before you mount a smaller one),

main jet will be much too small

(I expect someting around 125 without and 115-120 with air filter),

slide 45or 50 should be ok,

AQ 264 also,

choke does not really matter

and for the needle, I would try D56 or D29 if the other one does not work.

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