Vulpina,


The #3249 tuned silencer is effective between 10,000 and 15,000 RPM.
At this RPM level, the Quickie doesn't even think about waking up.

You need the #3246 tuned silencer, dedicated for the Quickie engine, which you can use with the rear header, #3262 I believe.
And you will need a small prop; no more than 9x6, but preferably smaller.

You will only be very disapointed, if you try to run the #3249 tuned silencer, as it comes.

Top-Model will gladly advise you further.