Yes - to a very limited degree. Two layers of panty hose is not much of a change. I would much recommend returning to the stock muffler first, because assuming it runs like all the other FP/LA engines, it will be much more stable with the stock muffler with no other changes. This means you don't lose much power in the range you can use.
Brett
Hi Brett and all,
I have been busy with works lately, and I just got the chance to fly last Sunday. So, I just wanna give you some updates on my journey to trim my Vector.
My previous problem was dealing with the fast lap times, thus one of the possible solutions is to 'detune' the engine.
In order to do that, I decided to return to the stock tube muffler and adding some exhaust deflector. These two parts really did rob some power of my engine.
I did three flights in total,
the first and second flight:
- Stock Tube Muffler + Full Length Exhaust Deflector
- Launch RPM 10,150 -10,200ish
- Wet 2 cycling
- Lap Time 5.6 - 5.8 sec range (previously, I was always on the 4.7 - 4.8 sec range). However, with this 5.6 - 5.8 sec range, I was having some trouble to do the Wing Over, it felt like I didn't have enough power at the peak and I felt the line was losing its tension.
the third flight:
- Stock Tube Muffler + Shorten (by 1") Exhaust Deflector
- Launch RPM 10,280 -10,350ish
- Wet 2 cycling
- Lap Time 5.3 - 5.45 sec range. With this lap time, I felt like I was having better overall experience and I could do better Wing Over but I didn't think it gave the optimum output I was hoping for.
My next plan is to fly more with the latest (third flight) setup to see more and make the conclusion. If it still feels a bit lack of power, I'd start to shorten the deflector by half-inch and see the difference it'll make.
But in general, I'm quite happy that going back to stock tube muffler (whether with the additional exhaust deflector or not) turned out to be working good and put me in a good ballpark.
Thank you so much for your inputs and suggestions.
Best,
Kafin