Sound Advice

Scratch049 Thu Oct 31, 2019 7:26 am

Actually noise advice for those that don't enjoy the music of an ic engine.
Our club has a muffler requirement at our field. No!

I asked a club officer and received permission to fly my Cox .o49's without said muff.
However larger engines are required to have one.
Although its kind of a sacrilege, I wonder if anyone has tried to fit a muffler to a vintage sparky and go flying?
Scratch...

getback Thu Oct 31, 2019 9:56 am

Yea Scratch049 do you run fly or have Sparkies ? I have a few that i am wanting to run , but the 70W oil seems to bee a problem , i can get 75W soon as i get to the Motorcycle shop 10- a qt. is good compared to Ebay at 17-18$ to the door Sad

ticomareado Thu Oct 31, 2019 10:23 am

An antique sparky and a high nitro dentist drill produce two entirely different sound profiles to casual listeners. The former is not anywhere near as objectionable. In fact there are probably quite a few electric models that produce a more annoying sound than a typical vintage sparky. There would be some exceptions among sparkies such as McCoy speed engines.

I certainly can't imagine mutilating a good sparky specimen to put a muffler on it. Some with exhaust collectors would probably take a strap on w/o too much risk of damage.

Scratch049 Thu Oct 31, 2019 1:04 pm

getback wrote:do you run fly or have Sparkies ?

Hi Getback.
Don't presently own a sparkie.
Occasionally have run into an example that gets my imagination going.
Hmmm... what could I put that Ohlsson in?
So I guess I'm here to just put out some feelers.

70W oil seems to bee a problem

I understand that some guys are having success with 60 weight. Walmart brand.
Hi ticomareado;
Never heard a sparky run up close and personal.

ticomareado wrote:I certainly can't imagine mutilating a good sparky specimen to put a muffler on it

Wasn't my idea.
A strap on of some sort is pretty much what I was thinking of.
If it indeed produces a mellow sound, then I probably wouldn't have any trouble running it at the club field.
Worth a shot!

aspeed Thu Oct 31, 2019 2:17 pm

Gas engines might run a bit hotter than glow. It may be a good idea to open the outlet a bit if there are no decibal limits, just to have one in place.

Scratch049 Thu Oct 31, 2019 4:15 pm

Good information.
Will keep it in mind.
Thank you Aspeed.
Scratch...

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