Rotax 503

[Blue Angel]

Hi,

I need advice:

Would it be unadvicable to buy a trike with single ignition?

[psg]

Hi
I went through this a while ago it doesnt seem to make a difference. The ignition is very basic and robust. Dont let it put you off a plane you like.

Cheers
Sacha

[CHARLIE WHISKEY]

MANY MOONS AGO ALL OF US FLEW & KNEW ONLY SINGLE IGN. CHANGE PLUGS EVERY 10 HOURS AND AWAY.. IF YOU LOOK AFTER YOUR ENG NO DIFFS.

CHEERS

[GR8-DAD]

Have never heard of a mag failure on a 503. But then why did they change it to dual mags

[Mogas]

I started out on single ignition 503s. Learned the hard way that jetting must be correct for your altitude. Too rich, oil up a plug and down you go. Get it right and there should be no problem. Also never heard of mag failure.

[Duck Rogers]

Hi,

I need advice:

Would it be unadvisable to buy a trike with single ignition?

If it will get your arse in the air, and that's your budget, then go for it. Nothing wrong with a single ignition.

[Maybe]

Found this post in the archives

Did the general feeling regarding 503 SI and DI changed since 2007?

[psg]

Nothing changed here just bought a spare 462 with single ignition and never thought twice about dual ignition.

Cheers
Sacha

[Luther]

Just my comment on this issue. I fly a DI 503 and I detected a difference in power when running on SI or both. On a test that I did the engine did not reach full revolutions (6300 rpm) during SI. I would say there is a definate difference in power output.

[Maybe]

Hi Luther,

Interesting discovery.....I wonder if that is part of the DI design or just a "by Product" due to the design. To do a 1 to 1 (SI to DI) comparison would probably be difficult. Due to the way the engine was ran in the care that was taken with it.

Is there a way of doing an independent test on both engines? Has anyone done it before?

[Eyes]

I think dual ignition is the way to go

[Eyes]

Remember its your life on the line. Don't skip if you don't have to!!