503 Sparkplug gap ?

Technical questions, advice, sharing information etc (aircraft, engines, instruments, weather and such)
Caledonner
Thinking of flying
Posts: 11
Joined: Thu Oct 19, 2006 6:08 pm
Location: Caledon

503 Sparkplug gap ?

Postby Caledonner » Tue Apr 14, 2009 1:30 pm

What is the correct gap please ?
User avatar
Kalahari
Survived first engine out
Survived first engine out
Posts: 258
Joined: Wed Jan 14, 2009 10:53 am
Location: Bloemfontein

Re: 503 Sparkplug gap ?

Postby Kalahari » Tue Apr 14, 2009 2:40 pm

What worked best for me was anything between 0.4 and 0.5 mm, otherwise you battle your arse of to get it started when the engine is hot.
Arrogance and rudeness are the training wheels on the bicycle of life for those who can not keep their balance without it!
User avatar
coastwise
I hate bird strikes
I hate bird strikes
Posts: 307
Joined: Thu Jan 24, 2008 8:05 pm
Location: Port Alfred

Re: 503 Sparkplug gap ?

Postby coastwise » Tue Apr 14, 2009 5:46 pm

Rotax manual says gap should be 0.5.

My AP recommends 0.45 says engine starts easier.
Aviate Raptor
Caledonner
Thinking of flying
Posts: 11
Joined: Thu Oct 19, 2006 6:08 pm
Location: Caledon

Re: 503 Sparkplug gap ?

Postby Caledonner » Tue Apr 14, 2009 6:17 pm

Thanx ! vhpy
Africa
I hate turbulence
I hate turbulence
Posts: 332
Joined: Wed Jan 28, 2009 3:55 pm
Location: everywhere

Re: 503 Sparkplug gap ?

Postby Africa » Tue Apr 14, 2009 8:47 pm

I have flow thousands of hours at .45 setting with no worries. Jamie
Luther
Heard about flying
Posts: 2
Joined: Wed Mar 18, 2009 1:06 pm

Re: 503 Sparkplug gap ?

Postby Luther » Mon May 11, 2009 3:11 pm

Hi

Don't the preset the gap setting?
I buy them and install them as they come.
If you do not flood the carp with second pull, it starts with no prob.

Regards
User avatar
Morph
The Big Four K
The Big Four K
Posts: 5176
Joined: Wed May 25, 2005 3:34 pm
Location: Cape Town

Re: 503 Sparkplug gap ?

Postby Morph » Mon May 11, 2009 3:34 pm

Luther wrote:Don't they preset the gap setting?
no they don't. It's normally too wide
Greg Perkins

Who is online

Users browsing this forum: No registered users and 3 guests