Folks On my earlier test flights I found my ASI was under reading by 8 knots at 120 knot cruise when the pitot/static were mounted as per the plans under the wing. I figured there was too much turbulance from the wheel spats and thus moved the assembly to a position some eight inches forward of the wing gap on the extended chord line. This nows gives me a much closer reading of true airspeed ( remember to adjust for temp and altitude) compared to GPS runs into and out of wind. Also the tubes cannot get bent by a flexing undercarriage!!! Don't ask how I know this can happen.
Bingelis (an article I found on the web somewhere) suggests that the static can be fine tuned using a small O-ring on the tube either before or after the static hole. I'll try and find the site and post it shortly. Regards John The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: johnj...@chc.net.au
