Hi all,
Sorry to bother all of you again. What's actually a muffler? If I were to buy the TT 46 pro, does it come with it?. To my knowledge, a muffler is something like an exhaust to lower the sound of the engine. So is it neccessary to have a muffler? and is this part of the pasckage when you buy the engine? By the way, I always hear you guys said " to take the baffle out of the muffler" What does it actually means? I must apologise for my limited knowledge in RC vocabulary

I think a TT .46 engine comes with a muffler, not sure though.

A muffler IS what makes the engine more quiet and in most cases, makes the engine work more efficiently.

Most club Fields require a muffler to keep the noise down to a certain level. Again, some engines may not run very well or not at all without a muffler.

Sometimes the manufacture of the engine will install a "baffle" inside the muffler to create back-pressure to either help the engine produce power/ and or pressure for a fuel system. Alot of glow engines require some sort of air pressure to push into the tank, in turn forces fuel into the carburetor of an engine. If you remove the baffle out of an engine, you may get more power, you may get less power, or you may not get enough back-pressure to operate your fuel system. Then the engine won't run at all. YOU WILL GET A LOUDER EXHAUST SYSTEM IF YOU REMOVE THE BAFFLE.


Hope this answers some of your questions.

LATER!!!

Joe

When you buy an engine such as the TT .46 PRO it will come with the muffler. It attachés itself to the side of the engine and yes it does quiet it down. You also have a nipple on the muffler where you attach some fuel line and that goes to the fuel tank so it can pressurize the tank for better fuel flow. You will see this in the instructions that come with the engine and the one you are talking about is a great running engine.

BTW, where in Thailand are you?? I was in bangkok a few times in the mid 60's and would love to visit it one more time and get a huge plate of the deep fried cobra with that glaze over it, what a treat![&:]

Hi,
Thanks for all the information. I mean this is real information which i can truly onderstand.
I live in Bangkok. GrnBrt, I'm not sure they still supply deep fried Cobra or not but the latest trends are fried locust, worms , scorpions and other creepy insects. Not try them yet but was told that it's good for your health. lol....

Back in the 60's Stores in Detroit sold chocolate covered insects. Never tired one, but heard they were good.

As far as a muffler is concerned, it is a device that allows the exhaust gas to expand and the pressure to be lowered. This effect allows the sound to be reduced prior to allowing the gas and sound into the ambient air.

Most interesting that we come here to talk about rc planes and end up chatting about exotic food. Removing the baffle DOES NOT cause any problems to the running of the engine. It will be louder but then there is more high end RPM, it will not affect the pressure to the tank. I run my TT46 and SC46 without baffles and there are no problems at all.

I can tell you that the Tower 46 without the baffle is way too loud for our field, especially with the recommended break in prop.

The high pitched whine is extremely annoying, even from 50 to 60 feet away.
Dennis-

I removed my baffle on my OS46LA and 46 FX, There was a
slight power gain, A lot of noise gain:-) They both ran ok until
I got down to about half tank of fuel left, then depending on
how I was flying both of the engines would studder when going
vert. or flying it hard, and died a few times while I still had 1/4
tk. left.. Needless to say I've put both baffles back on...

Man I love that muffler. It bolts right up to an irvine 53 and 46fx. This thing makes you think you have a totally different engine. You are right though, they are very loud.

A muffler --goes around the neck to prevent body heat loss
A muff is held in front and the hands are thrust in it to keep them warm.
(There are other definitions but I will leave them to your imagination------)

So what is muff diving? Is that where you jump onto a pile of mufflers?

A 2 stroke engine has no way of stopping the gasses from leaving the engine. A muffler does as several people have said. It allows gas expansion. It quiets the engine down. But it also helps regulate the fuel flow through the engine. It also allows the fresh fuel to stay in the engine and not be sucked out the exhaust. You need a muffler on a 2 stroke engine for it to work efficiently. Otherwise it would not produce much power.

Taking the baffle out. In most mufflers on 2 stroke engines there is a disc with holes in it. It is usually near the center of the muffler. It is there to slow the gasses down to allow them to cool and lower the sound output. Taking them out usually makes the engine more powerful and a lot more noisy.

I hope this helps you understand a muffler better.

Mark Shuman

PS: The TT does come with a muffler.