Venturi hole size for Irvine .40 conversion?
05-24-2023, 09:33 AM
#1
Thread Starter
Venturi hole size for Irvine .40 conversion?
I want to convert an Irvine .40 RC to CL use. What size of hole should I drill for the venturi if I plan on using an OS nva?
How could I use the existing RC carb for CL use?
Tia,
Franchi
How could I use the existing RC carb for CL use?
Tia,
Franchi
06-02-2023, 05:24 PM
#2
Join Date: Aug 2006
Location: Greensborough, AUSTRALIA
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Hi Franchi,
The simple one first, if using the r/c carb just wire the throttle fully open and regulate the fuel flow with the main needle like you would with a regular glow engine,
If the intent is to fit a venturi with a straight through spray bar and needle set up then a venturi hole about 5/16" diameter where the spray bar goes through would be a good starting point.
Ployd in OZ
P.S. there is a venturi chart on the Barton Control line site that would give you a better answer.
The simple one first, if using the r/c carb just wire the throttle fully open and regulate the fuel flow with the main needle like you would with a regular glow engine,
If the intent is to fit a venturi with a straight through spray bar and needle set up then a venturi hole about 5/16" diameter where the spray bar goes through would be a good starting point.
Ployd in OZ
P.S. there is a venturi chart on the Barton Control line site that would give you a better answer.
