EDM900 or 930???

[N400YS]

Hi

 

It is time to put some (more) money in the plane

 

I have to choose between the JPI EDM 900 or the EDM 930....But what are the differences between these two devices? Unless the big money step !!!

 

It is for a 1995 MSE.....

 

Thanks

[Bob_Belville]

I like the size of the 930. I needed to locate mine on the right panel where I can see and easily interface with it.  

[StevenL757]

Honestly, it comes down to (as you said) money, personal preference, and whether you have space in your panel.  I personally went for the EDM900 2 years ago when I had my new engine installed.  Cost was a factor then, and I ended up getting the 900 through the Sun and Fun discount of about $3800.  Given my new panel was just completed, I asked my shop to leave room above where the 900 is presently located so we can change it out to the 930 with little fuss and panel rework, so I'll probably do that in the next 6 months when we add the GTN650 also.

Feature-wise, the 900 and 930 are mainly identical in functionality, and both approved for use as primary engine gauges, sufficient for you to remove your factory gauges.  Honestly, my only real reason for wanting to bump to the 930 is really the larger display...all other things being equal.  Have flown with them both, and you can't go wrong either way.

[Bob_Belville]

400YS, note the JPI RAD (Remote Alarm Display) above the Aspen. This puts RPM & MAP and any alarm conditions right in front of the pilot.

[StevenL757]

3 minutes ago, Bob_Belville said:

400YS, note the JPI RAD (Remote Alarm Display) above the Aspen. This puts RPM & MAP and and alarm conditions right in front of the pilot.

Good point.  One feature the EDM900 doesn't have...

[Bob_Belville]

Just now, StevenL757 said:

Good point.  One feature the EDM900 doesn't have...

Steve, did not know that. I'm a little surprised, I was told it was required in the 930 install since old tach and MAP gauges are removed. Of course the old steam gauges were often even further outside of the pilot's primary scan!

[Marauder]

3 minutes ago, Bob_Belville said: 400YS, note the JPI RAD (Remote Alarm Display) above the Aspen. This puts RPM & MAP and and alarm conditions right in front of the pilot.

Good point.  One feature the EDM900 doesn't have...

Just now, StevenL757 said: Good point.  One feature the EDM900 doesn't have...

Steve, did not know that. I'm a little surprised, I was told it was required in the 930 install since old tach and MAP gauges are removed. Of course the old steam gauges were often even further outside of the pilot's primary scan!

The 900 does have a remote indicator, just not one that uses a verbal indicator. The 900's indicator is an indicator light that is mounted in front of the pilot. It will turn red or yellow to indicate a non-green condition.

You can see it right above the Aspen in this picture.

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[Marauder]

Honestly, it comes down to (as you said) money, personal preference, and whether you have space in your panel.  I personally went for the EDM900 2 years ago when I had my new engine installed.  Cost was a factor then, and I ended up getting the 900 through the Sun and Fun discount of about $3800.  Given my new panel was just completed, I asked my shop to leave room above where the 900 is presently located so we can change it out to the 930 with little fuss and panel rework, so I'll probably do that in the next 6 months when we add the GTN650 also.

Feature-wise, the 900 and 930 are mainly identical in functionality, and both approved for use as primary engine gauges, sufficient for you to remove your factory gauges.  Honestly, my only real reason for wanting to bump to the 930 is really the larger display...all other things being equal.  Have flown with them both, and you can't go wrong either way.

Steve - I believe your shop should have installed the remote indicator for your 900. There is a distance requirement of the 900 from pilot centerline. Mine did not require it, but I had it installed anyway.

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[Marauder]

Hi

 

It is time to put some (more) money in the plane

 

I have to choose between the JPI EDM 900 or the EDM 930....But what are the differences between these two devices? Unless the big money step !!!

 

It is for a 1995 MSE.....

 

Thanks

N400YS -- as the other indicated, it is about preference. I started off with an Insight GEM, then a JPI 830 and finally the 900.

The 900 can do everything a 930 can do (sans the verbal indications described above). The big question is how much space you want to dedicate to it.

I could definitely put a 930 on the right side of my panel, but elected to go with the 900 just to save real estate.

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[Bob_Belville]

Just now, Marauder said:

 

The 900 does have a remote indicator, just not one that uses a verbal indicator. The 900's indicator is an indicator light that is mounted in front of the pilot. It will turn red or yellow to indicate a non-green condition.

You can see it right above the Aspen in this picture.

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Isn't it amusing that the bu gauges that you kept are further away from your scan/reach than the 900? My 930 is directly above the copilot yoke so somewhat further way.

[Bob_Belville]

Just now, Marauder said:

I could definitely put a 930 on the right side of my panel, but elected to go with the 900 just to save real estate.

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For a 750?

[StevenL757]

4 minutes ago, Marauder said:

Steve - I believe your shop should have installed the remote indicator for your 900. There is a distance requirement of the 900 from pilot centerline. Mine did not require it, but I had it installed anyway.

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Good catch.  The shop did indeed measure the angle and determine the display would be within acceptable limits, so the light wasn't required.

[PTK]

3 hours ago, N400YS said:

...I have to choose between the JPI EDM 900 or the EDM 930...

Neither! I chose to stay with the large screen EDM 800.

My plane came with the EDM700 and FS450 ff. I love the separate dedicated ff computer. I upgraded the 700 to a large display EDM800 and placed it in front of my face. The 800 is the most powerful engine monitor JPI had ever made imho. A 900 or 930 would not provide me with any additional info. Between this and the engine gauges across the top I have everything I need in my scan. Another benefit is it occupies "zero" additional panel real estate!  Therefore I'd rather spend my money on avgas than on a pretty color display!

[Bob_Belville]

1 minute ago, PTK said:

Neither! I chose to stay with the large screen EDM 800.

My plane came with the EDM700 and FS450 ff. I love the separate dedicated ff computer. I upgraded the 700 to a large display EDM800 and placed it in front of my face. The 800 is the most powerful engine monitor JPI had ever made imho. Between this and the engine gauges across the top I have everything I need in my scan. An EDM 900 or 930 would not give me anymore info. Therefore I'd rather spend my money on avgas than on a pretty color display!

 

Whatever. You gotta love the girl you're with.

[Marauder]

33 minutes ago, Bob_Belville said:

For a 750?

Noooooooooooo.... I am sitting around the house today getting quotes to replace my 19 year old air conditioner that failed Saturday. The only 750 I will be getting anytime soon is a Carrier 750 or a York 750 or a Trane 750. 

[Bob_Belville]

Just now, Marauder said:

Noooooooooooo.... I am sitting around the house today getting quotes to replace my 19 year old air conditioner that failed Saturday. The only 750 I will be getting anytime soon is a Carrier 750 or a York 750 or a Trane 750. 

Can't hold out a few months? 

[Marauder]

36 minutes ago, Bob_Belville said:

Isn't it amusing that the bu gauges that you kept are further away from your scan/reach than the 900? My 930 is directly above the copilot yoke so somewhat further way.

This all electric stuff became a topic of conversation a couple of weeks ago when I did a Flight Review with an airline pilot. He asked me some questions about how I would manage my power load if I lost the alternator. Good question. In response to that question, I started pulling the electrical requirements for the equipment I have installed and will spend some time figuring out what breakers I will need to pull to take advantage of that 33 amp hour battery I have.

[Marauder]

36 minutes ago, StevenL757 said:

Good catch.  The shop did indeed measure the angle and determine the display would be within acceptable limits, so the light wasn't required.

I was curious. 

[carusoam]

1) Apparently, the B brand doesn't think the altimeter is worth putting in the primary scan...   (Technically that's altimeter #2)

2) There must be a reason for the angle or distance to the instruments.

3) scanning was taught to keep the head still and scan with the eyes only...

4) Can your eyes scan instruments 21" to the right with your seat positioned to have your hands on the yoke?

5) do neck muscles tire more quickly than eye muscles?   Ever get a sore/stiff neck after a long flight?  After four hours in IMC, do the eyeballs want to fall out?

6) Noticeability... Will you notice something, not in the primary (T) or secondary scan?   Can you notice a small red LED illuminate in daylight way over there.....

I need to go brush up on my scanning techniques.

Best regards,

-a-

[PTK]

1 hour ago, Bob_Belville said:

Whatever. You gotta love the girl you're with.

Minimal to virtually zero head movement in IMC is priority over a pretty color display on the other side outside my scan. Why do you think Mooney put the gauges across the top in front of the pilot's face? Add to that zero additional panel real estate and she's a keeper!!

 

[gsxrpilot]

What happened to keeping eyes outside the cockpit? 

In IMC, the engine monitor is NOT part of the scan that keeps the airplane right side up and on course.

Under normal situations, the engine monitor can be checked periodically, every couple of minutes. If IMC, the autopilot is doing the flying and I'll watch the instruments and the engine monitor. In VFR, eyes are outside looking for traffic, and all the instruments fall into a periodic check to verify safe operations.

Besides, I can usually hear or feel issues that would be reflected on the engine monitor.

 

[Bob_Belville]

Just now, PTK said:

Minimal to virtually zero head movement in IMC is priority over a pretty color display on the other side outside my scan. Add to that zero additional panel real estate and she's a keeper!!

 

I'm neither buying nor selling. TEHO. Can you compare 4 CHTs or 4 EGTs and scan RPM, MAP, OilT, OilP, FF, FP, FuelUsed, Volts, Amps, OAT,... in a few seconds on one instrument, without pushing any buttons? I can on my 930.

[Bob_Belville]

Just now, gsxrpilot said:

What happened to keeping eyes outside the cockpit? 

In IMC, the engine monitor is NOT part of the scan that keeps the airplane right side up and on course.

Under normal situations, the engine monitor can be checked periodically, every couple of minutes. If IMC, the autopilot is doing the flying and I'll watch the instruments and the engine monitor. In VFR, eyes are outside looking for traffic, and all the instruments fall into a periodic check to verify safe operations.

Besides, I can usually hear or feel issues that would be reflected on the engine monitor.

 

A few weeks ago I flew five formation sortes training to fly the Mooney Caravan. I was forbidden to look at anything at all inside the plane. (Minimum qualifications include 500 pic so the pilot is assumed to be able to manage the throttle, gear without looking. No flaps used and lead navigates, chooses altitude and speed.) Mixture full rich (~2000 MSL) Prop full. Use throttle aggressively along with elevators, rudder to stay in position and not collide with my lead. What do you know the engine managed to get along for an hour at a time without my supervision!

[DXB]

I enthusiastically recommend the 900 if you have room for it in the left panel without displacing key flight instruments. I think it considerably reduces the workload required to set power and keep engine gauges in the scan. Having it near the center visual field has not been distracting, and I've caught a couple of issues instantly that I think would have taken longer for me to realize with it mounted in the right panel.  Otherwise the larger and more costly 930 in the right panel plus the remote display are reasonable considerations.

Note I mounted my 900 to the left of the radio stack in the tight panel of my old C without displacing anything crucial, and still left room to add an additional standard size instrument under it in the future. My main complaint is that the display layout is not as configurable as I would like it to be, but I think this is a reflection of it's certification as a primary instrument.

 

[Marauder]

Just now, Marauder said: Noooooooooooo.... I am sitting around the house today getting quotes to replace my 19 year old air conditioner that failed Saturday. The only 750 I will be getting anytime soon is a Carrier 750 or a York 750 or a Trane 750. 

Can't hold out a few months? 

Heck Bob, if it were up to me, I would never turn those power sucking monsters on. The whirling sound of the electric meter alone keeps me up at night.

No, it is the Mrs. who insists I act pronto. Not even an offer of filling the Jacuzzi with her and ice water has deterred her fixation on getting that AC unit replaced.

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