Question, should I just put a spaced plate over the regulator vent hole or should I solder a fitting on the plate and put a hose on it leading to the inside of the fuse? Wonder if one method is any more effective than the other?

WRK

Most of the time just covering it with something to keep air from hitting it works, all in how the air moves through the cowl.

Milton

here is the way i see it....

If you cover it, this may or may not work. if you solder a brass tube, run a hose, this will work and is probably easier than manufacturing/engineering a plate.

I put the brass tube in my G26 and ran the hose inside the fuse. Easy enough and worked like a champ.

Sometimes it does, and sometimes it does not. From the reports here, it is hard to judge which solutions cover a soft membrane, and why some wo'nt work on a hardened membrane.
Normally, running a pressure reference line to a quiet air pocket should work in all cases.

A 1/8 inch lite-ply plate attached with two sided foam tape worked for me on a 3W 85 twin. Its so easy to do its probably worth a try first.

Steve

Has anyone ever took the plate off and drilled 4 holes in it. One for all for directions? Maybe no pressure could build up on the diaphrame. Use a extra cover off a extra carb that is not being used. I know it just an experiment.....but who knows???? Capt.n[:-]

My experience with the static port plate issue is one of "direction". If the holes are pointing forward, or into an area where they receive incoming air that varies with airspeed or attitude, or rpm, then the problems presented themselves.
Had one engine, can't remember the brand/size, that had the plate facing the rear and not too far from the firewall, but far enough that air didn't dam up at the firewall, varying pressure.

That ONE configuration ran the same regardless of cowl on/off, on ground, in air, etc.

ALL of my other carb configurations, where that pressure port is exposed to inflow or dam-ed up air presented the problems for sure.

I have never heard of this before, please humor my Ignorance.
Does this apply to any gas engine with the fuel regulator pump? I have a Zenoah G26, Would this apply to me? If so I didnt see anythign in the owners manual about it. I may have to re-read it.

Thanks!!!