Hallo zusammen, wer hat Erfahrung mit o.g. Set-up ?
habe den Umbau von Drehschieber auf DRT - Membran durchgeführt. Der Einlass ist entsprechend angepasst worden. Irgendwie ist keine Leistungsverbesserung festzustellen. Der Motor dreht jetzt zwar rundum besser, im vierten Gang komm ich nicht mehr aus dem Drehzahlkeller. Nur leicht bergab komm ich auf Geschwindigkeit, wie vor dem Umbau (ca. 105 Km/h). Es ist noch die Original KW iund Topf verbaut. Könnte es daran liegen ?
Kann durch das biegen der Membran - Anschläge (Öffnungswinkel ) etwas verstellt werden. Hab die Dinger mal etwas aufgebogen, der Motor lief dann so fett untenrum, das man eigentlich nicht fahren kann.
Hat jemand eine Idee, was hier nicht so optimal sein könnte.
Entschuldige dass Ich in Englisch anworte aber Deutsch wird hier zu schwierig..
I have the exact same problem with the similar Worb5 membrane which I have put on a GL engine block ported for 24mm Carb / Pinasco 177cc cylinder and with a leaky input (thus the kit). I did not cut away the full intake "Reed-style" since the should be bolt on/repair.
It idles fine and has "acceptable but poor" acceleration up to 3:rd (last) gear where it barely reaches 70 km/h. I think you are spot on with the membrane angle. A membrane is usually mounted in 45/35 degrees versus the flow but this membrane is like 80 degrees. The air is thus directed not in the crank case but rather to the side wall and the effective opening area is much smaller than the carb hole. It may work on a LML where the intake is different (more diagonal) but not on a PX/GL
I dont know how much you have modified the intake - did you cut away the selaing pad completely?
Without having tried mysel, I think one has to cut away as much material as possible to get "true-membrane" performance. But membrane itself does not improve performance - it prevents back-leakage but is only a restrictor at full speed.
Hello Hekan, thanks for your answer. I think we have the same problems. In the area of the crankcase, i didn`t grind as much. The cut - away is now history. The space for the intake (Membran) is nearly perfect.
The next step is now to change the crank. I ´ll inform you, if it was successfully.
Please do, at the moment I do not see how I can get proper performance when the reed is still mounted. If you succeed, please let me know since your kit is a bit more powerful than mine. If you succeed in the setup, so could I. Otherwise I need to return it...
I cut my crank 20mm to increase the intake duration and that gave some extra top end power. I changed back to the original crank hoping that it would solve the issue but no. Without the reed it just dies whenever I open the throttle under load.