In reply to DIESELDAN
after 50yrs you folks should really update those carbs
Sure, the original PAW carbs are not so good but with the decline of the LHS here we don't have much choice.......................of course we COULD use the carbs from busted Irvine 20's and 40's (the older Irvine glow motors had a propensity to throw the rod out thru the crankcase).
I was thinking of drilling out a standard PAW carb body as so ===>
1. Englarge the front air bleed hole to 1.25 MM, this is to allow an excess of air to enter.
2. A 0.8 MM drilling in front and parralel to the main airway, going down to meet with the air bleed hole.
3. Tapping the above drilling to M1 and fitting a screw and spring. , the tip of the new "idle mixture" screw could have a small taper to make adjustment less sensitive.This should enable the amount of air entering the engine via the enlarged air bleed hole to be varied.
Maybe this isn't done by PAW nowadays due to ===>
1. Cost of work for the extra drilling/tapping operation.
2. Less parts for users/flight line experts [:@] to twiddle with/break resulting in complaints that "this damn engine is no good" when users lose all the settings or worse............putting on the electric rod-buster
What are your thoughts on this?
Andrew