AirTalk.org Aviation discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  EDM-800 engine analyzer?          AirTalk.org Forum Index -> Aviators (General Discussions) View previous topic :: View next topic   Author Message Jeff Guest Posted: Sat May 22, 2004 8:13 pm    Post subject: EDM-800 engine analyzer? does anyone here have the EDM-800 engine analyzer? if so what do you think about it, is it as good as the advertisements? Back to top HECTOP Guest Posted: Sat May 22, 2004 9:22 pm    Post subject: Re: EDM-800 engine analyzer? "Jeff" <jeff (AT) turboarrow3 (DOT) com> wrote Quote: does anyone here have the EDM-800 engine analyzer? yeah, we had it on my favorite Grumman Tiger at the club in KBDR, helped a lot fine tune mixture and save fuel, especially on long x-c flights HECTOP PP-ASEL-IA http://www.maxho.com maxho_at_maxho.com Back to top Jeff Guest Posted: Sun May 23, 2004 12:14 am    Post subject: Re: EDM-800 engine analyzer? does it really give you your % of horse power and did it seem accurate to you? HECTOP wrote: Quote: "Jeff" <jeff (AT) turboarrow3 (DOT) com> wrote in message news:40AFB474.8694DF09 (AT) turboarrow3 (DOT) com... does anyone here have the EDM-800 engine analyzer? yeah, we had it on my favorite Grumman Tiger at the club in KBDR, helped a lot fine tune mixture and save fuel, especially on long x-c flights HECTOP PP-ASEL-IA http://www.maxho.com maxho_at_maxho.com Back to top HECTOP Guest Posted: Sun May 23, 2004 12:45 am    Post subject: Re: EDM-800 engine analyzer? "Jeff" <jeff (AT) turboarrow3 (DOT) com> wrote Quote: does it really give you your % of horse power and did it seem accurate to you? I never really used the horse power meter, the only things that really matter are EGT and fuel flow, but according to pilot's guide it is simply a user programmed constant. You would need a dynamometer to measure actual horsepower accurately. "Section 9 - Programming the EDM-800 Horsepower Constant You must adjust the HP Constant once for your aircraft. The Fuel Flow Option is required to be installed to display percent of horsepower. The default display will be RPM if Fuel Flow is not operational. You must perform this adjustment in the air while the aircraft is in flight." See: http://www.jpinstruments.com/PG_700-800%20Rev_R%202.PDF HECTOP PP-ASEL-IA http://www.maxho.com maxho_at_maxho.com Back to top Viperdoc Guest Posted: Sun May 23, 2004 1:45 am    Post subject: Re: EDM-800 engine analyzer? I have an EDM 760 in my twin, and it has been very useful. First, it immediately can identify a fouled plug, or plugged injector. This saves a lot of time searching for and cleaning plugs when the engine runs rough on one mag at runup. It also helps in mixture management when leaning, and helps to protect the engine regarding the CHT's. Fuel flow is also a bonus, particularly in combination with a GPS that will calculate range, endurance, etc. Overall, they add a lot of efficiency and safety. Back to top Jeff Guest Posted: Sun May 23, 2004 3:05 am    Post subject: Re: EDM-800 engine analyzer? I have the GEM 603 by insight , but its not working very good, I think the temps are way off on it, I had sent it in a year ago because the T I T was inop and it came back with the temps not working correctly. I saw that the new EDM800 showed % power and that it got its information from OAT, RPM,fuel flow and so on to display the current % of power, since I fly at 65% power it would save me from figuring out the standard temp at my altitude then adding/subtracting MP to get 65%. so since my GEM seems to not be working correctly I was hoping to replace it with the new EDM800, but it if cant show the % power like the advertisement says, then a cheaper replacement may have to do. Viperdoc wrote: Quote: I have an EDM 760 in my twin, and it has been very useful. First, it immediately can identify a fouled plug, or plugged injector. This saves a lot of time searching for and cleaning plugs when the engine runs rough on one mag at runup. It also helps in mixture management when leaning, and helps to protect the engine regarding the CHT's. Fuel flow is also a bonus, particularly in combination with a GPS that will calculate range, endurance, etc. Overall, they add a lot of efficiency and safety. Back to top tony roberts Guest Posted: Sun May 23, 2004 6:51 am    Post subject: Re: EDM-800 engine analyzer? Quote: does anyone here have the EDM-800 engine analyzer? if so what do you think about it, is it as good as the advertisements? I have the Electronics International one. It's the best thing I ever bought for the plane. My advice is if you can afford it - do it. You will be pleased that you did. Tony -- [email]Indiacharlieecho (AT) hotmail (DOT) com[/email] Tony Roberts PP-ASEL VFR OTT Night Almost Instrument Cessna 172H C-GICE Back to top Jack McAdams Guest Posted: Mon May 24, 2004 7:26 pm    Post subject: Re: EDM-800 engine analyzer? I have the EDM-800 in my Beech Sundowner. It is, in general, outstanding. I do have an ongoing issue with the fuel flow however - it can't be trusted. It seems to always read high - but not at a consistent rate. After almost 2 years of playing with the K-Factor I'm a bit frustrated. The A&P who installed it ordered a test gizmo from JPI to see if it is bad. I doubt it, but we will see. I also added the oil temp and carb temp options. They work perfectly. The %HP is way off - but that is most likely a result of the screwed up fuel flow situation. Jack Jeff <jeff (AT) turboarrow3 (DOT) com> wrote Quote: does anyone here have the EDM-800 engine analyzer? if so what do you think about it, is it as good as the advertisements? Back to top toecutter1962@yahoo.com Guest Posted: Tue May 25, 2004 12:32 am    Post subject: Re: EDM-800 engine analyzer? On 24 May 2004 12:26:14 -0700, [email]daedalus (AT) ptd (DOT) net[/email] (Jack McAdams) wrote: Quote: I have the EDM-800 in my Beech Sundowner. It is, in general, outstanding. I do have an ongoing issue with the fuel flow however - it can't be trusted. It seems to always read high - but not at a consistent rate. After almost 2 years of playing with the K-Factor I'm a bit frustrated. The A&P who installed it ordered a test gizmo from JPI to see if it is bad. I doubt it, but we will see. Useta have fits isolating Shadin fuel flow transducer wiring from other sources of interference. Outside influences would "add" pulses to the signal, increasing the indicated fuel flow and messing up the total used. Is the harness to the transducer properly shielded, and routed in such a way to physically seperate it as much as possible from other wiring? Finally gave up on the Twin Beech installs. Got it so it worked fine in flight, but the indicated fuel flow pegged on the high side when the ignition booster button was pushed during engine start. 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