On Mar 20, 6:55 pm, Jay Maynard
wrote:
(This has nothing directly to do with Bonanzas anymore, so it gets a new
thread...)

On 2008-03-20, Dan wrote:

The JPI is the greatest thing since -- GPS!
Running LOP with GAMinjectors, I can get a lightly-loaded A36 to fly
130 KIAS on 10 gph.

I decided I'd rather know than guess, so I added a fuel flow sensor to the
Zodiac's Dynon D10 EMS. It's already got CHT and EGT sensors and nice pretty
bar graphs for each cylinder, so between the three, I should have all the
information I need to run the O-200 at its most economical.

The aircraft I trained in a long time ago didn't have such fancy
instrumentation. One leaned the engine in cruise by the tried-and-true
method of leaning till it ran a little rough, then back rich until it ran
smooth again. This worked, but wasn't exactly precise.

I'm sure this is a subject of some controversy. Where would I find guidance
on the best approach to managing this wealth of information? I know that I'm
not going to make a difference comparable to getting a Bonanza to run at 13
vs. 16 GPH, but going from 6 to 5 would be worthwhile.
--
Jay Maynard, K5ZC http://www.conmicro.comhttp://jmaynard.livejournal.com http://www.tronguy.net
Fairmont, MN (FRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC (ordered 17 March, delivery 2 June)

The JPI manual -- while presented in a convoluted, rambling way -- is
very helpful.

JPI mentions GAMInjectors as required for the Lean of Peak method.

The argument is that lean of peak the temperatures are cooler than
peak and burns less fuel. Thus you prevent heat damage (which you
might see at peak or even slightly ROP) and save $ on 100LL.

Not a bad deal....


Dan Mc