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I am going to be honest with you, it is not very fun to have a Funtech muffler at this moment.

I have been struggling a bit with my muffler for the last couple of weeks, after I set my Freya up to run 1980RPM on the head, my Funtech muffler start to unscrew itself, not where it normally loosens but on the mount where the pipe is mounted see picture.

The defect Funtech muffler

Naive as I am, I started to remount the pipe mount with some bigger screws 5mm, and that was no problem until I started to run the engine, after two thanks the mount was starting to loosen again. I cannot mount a 6mm screw and that would problem not help either. The washers in the muffler were not looking good either see picture.

Now this defect is after max 10 gallons of fuel, which is a pure design if you ask me!

Any sponsors with a new muffler for my OS 91SZ running 1980RPM on the head. I can add some advertisement on my site as payment? Contact me

One other think I noticed today was my tail blades are staring to make resonance sound, I was hovering inverted and with a 10 degree angle against the wind the tail blades was making a lot of noise. I have heard about this issue from a fellow pilot with standard Hirobo Freya tail blades. I guess this means that I need new tail blades to.

This is one of the frustrating times for a heli pilot when the hardware does not play along. I was flying really great today, practicing tic-toc and doing inverted hover in all directions. Now I am back to the bench fixing my helicopter and begging the wife for approval to by a new muffler. I must be great to be a sponsored pilot. :)