marc mularz wrote:

Hi Paul;

In reference to your comment about using auto gas, can a 13b run safely

on

100 LL?  I seem to remember this was discussed a while back, but I can't
find whether I saved that post. Thanks,  Marc

I think 100LL is a spark plug  and O2 sensor life issue for the rotary.

Tracy

as I recall thinks 100LL leaves a few deposits on the plugs. As I recall
the plugs clean up and the sensor recovers after a tank or two of auto

fuel.

Tracy?

BTW what is that web site address that gives you the availability
of auto fuel at airports around the country.

Paul Lamar

Plug life is cut by about 1/2 on 100LL and O2 sensor response gets slower
when poisoned with lead (which is not a problem for monitoring mixture).  I
get about  150 hours on plugs with mixed use of 100LL and auto fuel.
Straight auto gives about 250 hours plug life.  Never tried a constant diet
of 100LL so don't know what would happen.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org