Hi i am new to this well new compared to all you
i have been flying for under a year and learnt on my
irvine tutor 40 with an irvine 46 abc up front
now that i have passed my bronze test and can fly solo
i bought the thunder tiger 50 and put in an irvine 53
which by the way was no mean feet as the 53 comes with a
super quiet silencer that the IMAGINE dose not like so a bit of moding
on my part and a little squeez and hey presto its in just but its in
now the problem i have is that the plane faild its sound test and we have a limit
at our field of 82 Db
mine regesterd 85 Db
now i need to know how to quieten it down a bit
engine is in cowl
muffler is half in half out of cowl
Muffler is touching fuse at the end
props used for test were
10X9 11X7 12X6