I am starting a FB F9-F within the next week or two, and need help from the more experienced builders/flyers here please.

I can bypass or not, and recall seeing arguments for both in the past. Please share your thoughts on engine and fuse temps, safety, complexity of installation, whatever.

Thanks guys, Don Ray.

An open install will typically run somewhat cooler and is somewhat easier to install/ set-up ... An open install however generates for some more internal drag so its not as aerodynamically clean. If your engine is running well ( as in not spitting fuel and fire out of the business end on start up) .. you should be fine with an open install ... Only time i would go out of my way to seal up a fully bypassed set up is if you are looking for max performance and efficiency, or if its a really tight install and you really want to keep the turbine/heat/fire as physically separated for the rest of the aircraft components as possible. Also, if going with a bypass and using gas (propane or power max) make sure you have good airflow as a gas build up before ignition can "pop" pretty hard inside the bypass if you get too much gas (again, not an issue for most engines ...


~V~

Thanks for that.

I have experience with only two engines so far. One was nothing BUT a beching/farting fire hazard (Wren) right outta the box (Turns out the ECU was all jacked up, right outta the box), and the other is a JetCat which also made some fire farts until I got it sorted out after the first few flights. I made some adjustments and it's been solid since.

I guess you could say I have been sorta snake-bitten so far with the fire thing. Something to consider.

if you do an open install, you can also use some fire resistant ceramic paint ( such as the BVM HeatShield) ... A this Stainless steel flashing could also be attached under the engine exhaust cone to protect the fuse from any oil / fuel that might drip out the rear of the engine ( such as after a wet start, or failed ignition )


~V~

http://www.rcuniverse.com/forum/m_67...tm.htm#6747643