Matronics Email Lists

Bobby, I forgot to ask if you have made sure the back of your ducts are extended to wrap around the bottom of your cylinder heads slightly as this would utilize what energy is left from cooling air fl ...

Hi Bobby

What is your full throttle climbing rpm? What is your egt's at this rpm? By your description of cylinder head temperatures it appears you could benefit by allowing more airflow past the ...

All in good fun, Tony. This sort of hacking is happening more these days, many should understand by now or the few that have experienced it themselves.. Hope you can get things cleared up soon....... ...

I have to admit there is a certain entertainment value to these scams anymore. Laughing

Bobby, you might want to consider running av gas for your testing as it will eliminate variables in egt. I hear too many issues of detonation and related engine damage over time when using fuel very c ...

Hi Bob
How low is your idle speed RPM? How smooth is it at this idle speed?

Cold weather starting problems are sometimes the result of not having the throttle closed enough which prevents the c ...

Hi Lynn, gotta ask. Any noticeable changes in power??

I use wear strips from MSC instead of grease on the shallow centering "v" notches. I use no rudder input JUST before nose touches down. Easy for cross wind.
First modification I perform ...

Ray, I like the Hirth. Do you have a complement of temp sensors to keep track of exhausts and heads?? This, with knowledge, equals piece of mind. No matter what engine you fly, know your temps!!!!! Ju ...

Nice device and picture. Looks like my thumb nail that needs a trim Smile

Rob, Not long after purchasing my plane 3 years ago with 50 hours, I had noticed the same staining on the bottom of two cylinders. I found that these heads are easy to remove for inspection and cleani ...

I am looking to convert my early hydraulic 2200A #2456 to solid lifter from GM, (.842" dia.) I need adjustable rockers. Anyone have any for sale before I buy brand new units??...DonB

Clive,
What happened to #1. I see #2,#3 and so on. Just thought to say maybe I'm the only one to catch this? Shocked

Thanks for your info. DonB

Hi
The idle air bleed needs to be drilled to 1.6mm or, .0629, or a 1/16" drill bit will do. As others have said, turning out is "rich" in "lean".
The idle mixture screw is ...

Jose, here is a link for the firewall forward installation of the type of plane I have. My 701 is slower than yours and requires the large openings at both entrance and exit to enjoy low and slow flyi ...

Hi Jose. The purpose of the holes is to bleed some cooling air over the front crank bearing, but you can duct tape them closed as an experiment. I found gaps around the bottom perimeter of my ducts w ...

You only have 27PSI oil press. at 2840RPM ?? That to me is scary!
For what it's worth I run 285 needle jet, 245 main jet. This is a 2200 #2456 in a Zenith 701. After things are sorted out, change oi ...

Bobby, Did you try raising the needle by placing the clip in one the lower notches in the needle? When you say "I have experimented with the Ram Air duct", what did you do?....Don B

J, Glad to hear you have seen some flight time and may be on your way out of your problem. But, as per Jabiru 3300 engine manual; "Leaded and Unleaded Automotive Gasoline above 95 Octane RON.&quo ...

Hi J, How soon after you install fresh plugs does the engine exhibit evidence of miss-fire? Does this happen after several heat and cool down cycles, or at the first warm up? This problem is so stra ...