>> I'm wondering how long a glow plug ignitor I'd need

Go to Sonic Tronics & get this power cord along with the 3.5" plug lock & you will be all set - http://sonictronics.com/xcart/produc...cat=332&page=1


>> my ignitor doesn't have the delay

A glow driver with a time delay is a must, it will save you a cam gear, a crank and/ or a bent valve in a long run. Don't ask me how I found out ... . I'm using a Japanese one, but the RCATS from Central will do the job nicely - http://www.centralhobbies.com/glow/g...prodriver.html


>> Are the plug caps available seperately or would you have to purchase a new ignition box when they wear out?

Unfortunately, once the cap is broken or worn out, you have to buy the whole ignition box. Unless, you know how to solder aluminum. However, with the 175, YS has pre-drilled two holes on the head right next to the connecting cap & supply you with two small allen head screw to stabilize the cap. Therefore, as long as you're using a zip tide to further stabilize the wire, you should not have much problem.


>> Last ys I had was the 140fz

The FZ has a pressurized system. Starting with the 140DZ, the engine has a fuel pump. The reason why you need a delay glow driver is once the prop is turning, it pumps fuel into the engine. Therefore, can easily flood the engine during start up. You want to spin the engine first before the plug lights up.

The way to start a DZ is NOT to use a starter to prime the engine, even for the first start of the day. Use your hand to turn the engine over with complete revolution - for about 6 turns, then, rock the spinner cone back & forth for another 6 to 7 times to further activate the pump. Connect your glow driver, push the on button - I usually adjust mine to 5 seconds delay - start the engine with the starter. Basically, you want to get the motor spinning before the glow driver kicks in, thus eliminates the back fire during start up. In addition, I usually let the starter spin for another 2 to 3 seconds even after the engine is started to ensure it is indeed started, nothing is more damaging than having a dry engine to stop abruptly when the starter is off, especially on the first start of the day. Be sure not to prime your engine again before subsequent flights, & always use a fuel clamp to stop the fuel from getting into the engine after landing, to prevent flooding again. After you're ready for installation, I can send you some pix.

Be careful when you're priming a cdi, be sure not to turn the prop with ignition on. Otherwise, you may kiss a few of your digits goodbye.

Adrian