4 pipe vs. crossover smoking?

704CH · #1 10-11-2011, 01:37 PM

I am wondering if there is a difference in smoke capability based on exhaust type. For example in the Pic that was used for the July Calendar. Is it possible that the RV on the top was a 4 pipe due to the more ?puff? like smoke from the ?single cylinder per pipe? ?

Just curious..

I am not necessarily talking about the pipes they smoke down there in California.. ;-)

Ron Lee · #2 10-11-2011, 03:56 PM

One injector in a four pipe system should put out 1/4 of the smoke of one injector is each of a two pipe system. Unless my thinking is wrong of course.

cplunkett · #3 10-11-2011, 04:29 PM

Chad, I am that guy in the photo "puffing". Team RV was performing in the "PDK Good Neighbor Day" Air Show. When I saw myself on the debrief video, I knew I had a problem. It was a plugged smoke injector. I have a "four into two" exhaust system with one injector in each stack about 6 inches from the exhaust exit. Works well when the injectors are clear :-)

"Bones"
Team RV Airshows

Tony Spicer · #4 10-11-2011, 04:30 PM

That would be Charlie 'Bones' Plunkett doing his impersonation of the Geico Skytypers. It's morse code that says "Enough already, Kahua"!

One clogged injector looks very similiar.

Tony

jrs14855 · #5 10-11-2011, 04:32 PM

two injectors in a crossover puts out a lot of smoke. Approximately 4 gallons used in 12 minutes. I had the injectors fairly close to the cylinders, can't remember the exact distance.I think the injectors were in the two rear cylinders, its been 20 years.

Ron Lee · #6 10-11-2011, 07:15 PM

Bones, that is still a very impressive picture. Great flying.