ORIGINAL: flyjoe540
there has to be a down side here somewhere.otherwise we all would be tripping over all the tuned pipes . manufactureres would fit them to existing engines instead of making new larger engines. yes tuned pipes
can work but there has got to be a limiting factor here that we are overlooking .like I said if they are' all that" we should literally be tripping and stumbling over all the tuned pipes that came on the engines we bought and tore down .
yet,..... I dont have one.
The downside is that they are expensive. The pipe for my G-62 cost me about $175.
Another drawback is, they aren't always easy to setup and secure to the airframe.
More?
You can cut too much off your header and ruin it. Then you go back to the manufacturer and pay through the nose for another one.
Once you dial it in, and tune it for a specific prop and fuel--your pretty much stuck with that combination. Change the prop (RPM) and you'll have to re-tune the system again. Sometimes, that means buying another header.
Why don't all manufacturers sell their engines with tuned pipes? Because it makes the engine run harder. Manufacturers are worried about warranties. It is not just something that you bolt on and go. It takes time, and patience. It also takes a bit of engine "know how" to put a pipe on an engine and tune it right. Do you ever read the engine forums around here? How many dumb*****'s can't even tune the carb on a simple glow engine? [sm=lol.gif][sm=rolleyes.gif] You think they can handle a tuned pipe?
And, those are just a few of the drawbacks to a tuned pipe. Most of it is end-user related
(lack of knowledge on the part of the end-user). Some of it is expense. A lot of it is manufacturers and warranties.