Need Ovation 3 STC Performance Charts

[Jeff_S]

Hey all. Can someone post the PDF of the O3 performance charts from Midwest Mooney? I have them at home but forgot to transfer them to my iPad and I want to check something out. I know they're here on MS somewhere but I searched for them and didn't find them right away. Thanks in advance!

jeff

[StevenL757]

Jeff, is this what you're after?

[Jeff_S]

Actually was looking for the takeoff performance charts to see how I did against book performance in my "hot and heavy" departure from PDK the other day. It was 96dF and I was at 3250 lbs. with no wind factor, Cloud Ahoy briefing said I lifted off in 1445' so just wanted to see how that matched up. I'll check when I get home. Thx.

 

[carusoam]

The STC should be available online.  It has the charts.  

 

[carusoam]

I'm interested in how you did too.  If you can share the details...

Anyone want to convert this chart to an app?

Best regards,

-a-

[Jeff_S]

Thanks Anthony. So according to this chart, I should have broken ground at 1000' where Cloud Ahoy says it took 1445'. Clearance over 50' obstacle should have been 2200' and I was closer to 2500'.

That said, I wasn't trying to do a max performance T/O since I knew I had 6000' to play with, so I probably slow-rolled the initial thrust. And I transitioned to Vy pretty quickly as well. All things considered, I think I was pretty close, so that's a good data point to have for future reference.

[GeorgePerry]

I'm getting ready to update my Stock M20S with the Screaming Eagle 310 HP STC.  I'm looking forward to cutting my ground roll by 1/3rd and the 168 pound increase in useful load.

[StevenL757]

Best money you'll ever spend actually, George.  The difference with my going from 280HP to 310 (along with the Acclaim Type-S prop) was dramatic.  I can only imagine what your conversion from ~240 will be.  On pushing up the power during your initial flight following conversion, Bob Minnis affectionately refers to your facial expression as The 310 Smile.  Sort of like your own personal catapult...   :-)

[carusoam]

George,

Tell us about your decision tree as you go through the process...

My tree was a bit foggy after taking a ride in someone else's Screemin' Eagle.  I did get the opportunity to spec everything out with Mr. Minnis via telephone.

I still have the Minnis Smile.  

Best regards,

-a-

[GeorgePerry]

Aug 2014 - Purchased the airplane.  Wanted to do the conversion immediately but was talked out of it by the transition training CFI from Premier Aircraft.  Said I should fly the plane as is and see if it fits my mission before making the change.  He was right, sort-of.  In the winter 90% of the time the stock eagle did what I needed it to do.  In the summer (hot and heavy) the 244 HP was working really hard to get the plane up to speed and airborne.  But with enough runway it was doable with adequate margins for safety.

Jan 2016 - Talked with the folks at Premier and they let me know about a brand new Hartzel 3 blade that a 2016 Ovation customer swapped out for an MT composite 4 blade.  The 3 blade was new minus the time it had from K-ville.  They said they's sell the prop to me at a discount in conjunction with the 310 upgrade.  I took 5 months to think about it 

June 2016 - After flying the plane for almost two years of flying the eagle my kids are getting older and heavier.  And with Summer temps fast approaching, It won't be long before reduced fuel loads would be required as my son and daughter grow and add pounds.  Also during the hot summer months 2500 foot airports were not doable in the eagle b/c of the very long take off roll.  In hot and heavy conditions, initial acceleration and climb are "adequate" but it takes a while to build up a head of steam so anything less than 3000 foot of pavement was really out of the question with my family on board.  Some of my travel really needs the ability to get in and out of shorter strips, so the decision was made.

July 2016 the plane should be delivered to Premier and have the upgrade performed.  Will report back on the changes that I observe.

[Marauder]

13 minutes ago, GeorgePerry said:

Aug 2014 - Purchased the airplane.  Wanted to do the conversion immediately but was talked out of it by the transition training CFI from Premier Aircraft.  Said I should fly the plane as is and see if it fits my mission before making the change.  He was right, sort-of.  In the winter 90% of the time the stock eagle did what I needed it to do.  In the summer (hot and heavy) the 244 HP was working really hard to get the plane up to speed and airborne.  But with enough runway it was doable with adequate margins for safety.

Jan 2016 - Talked with the folks at Premier and they let me know about a brand new Hartzel 3 blade that a 2016 Ovation customer swapped out for an MT composite 4 blade.  The 3 blade was new minus the time it had from K-ville, so I got the prop at a discount.  

June 2016 - After flying the plane for almost two years of flying the eagle my kids are getting older and heavier.  It won't be long before reduced fuel loads would be required as my son and daughter grow and add pounds.  Also during the hot summer months 2500 foot airports were not doable in the eagle b/c of the very long take off roll.  In hot and heavy conditions, initial acceleration and climb are "adequate" but it takes a while to build up a head of steam so anything less than 3000 foot of pavement was really out of the question with my family on board.  Some of my travel really needs the ability to get in and out of shorter strips, so the decision was made.

July 2016 the plane should be delivered to Premier and have the upgrade performed.  Will report back on the changes that I observe.

George -- wouldn't it be cheaper to install a RATO and use it when you need it?

Good luck with the upgrade.

[carusoam]

G,

One update from years ago, if available today.  The spinner on the TopProp is a slight mismatch for the Mooney cowl.  The spinner radius is about a 1/4" short causing a step from the spinner to the cowl.  It makes it look like the engine is drooping.

See if you can get a good match vs. this situation..?

Best regards,

-a-

[Cris]

George I'm curious to know the current cost of the conversion. When I look at the ad in MAPA thru Mooney it shows a standard price of $4995. That is quite reasonable for an option that was initially $25-30K. I had an early conversion from 240 hp to 280 hp. When I purchased the well optioned Eagle, I immediately upgraded it to 310 hp at Midwest Mooney.  The cost at the time was over 5k without a new prop or tach. It did require a tach update and a new prop governor. Thanks

Edited June 16, 2016 by Cris

[StevenL757]

Cris, you're correct - the 25-30k price included a propeller, prop governor work, and a new tach indicator to display up to 2700RPM.  Anyone who has an EDM900, EDM930 (or any other engine instrument certified as a primary replacement), you can have it adjusted to indicate 2700RPM and save the cost on a new, separate tach.

[GeorgePerry]

The quotes are going to vary based on the equipment needed.  I have an CGR-30P so no need for a tach.  Also the prop I'm getting is "slightly" used with about 6 hours on it.  So your milage will vary.

[Cris]

So what does the advertised price of $5K get you? Is that just for the STC? Maybe parts and labor are extra?

[Godfather]

1 hour ago, Cris said:

So what does the advertised price of $5K get you? Is that just for the STC? Maybe parts and labor are extra?

It gives you the stc paperwork to increase the rpm.  Parts and labor are additional. 

[Cris]

Well that makes sense Thanks

[Txbyker]

On 6/13/2016 at 6:13 AM, Jeff_S said:

Thanks Anthony. So according to this chart, I should have broken ground at 1000' where Cloud Ahoy says it took 1445'. Clearance over 50' obstacle should have been 2200' and I was closer to 2500'.

That said, I wasn't trying to do a max performance T/O since I knew I had 6000' to play with, so I probably slow-rolled the initial thrust. And I transitioned to Vy pretty quickly as well. All things considered, I think I was pretty close, so that's a good data point to have for future reference.

Jeff,

I am trying to measure performance and am wondering where on the Cloud Ahoy app you see the distance for take off?  I looked all over this app and can see the graphic of take off roll but not the net footage.

Thanks,

Russ

[Jeff_S]

7 hours ago, Txbyker said:

Jeff,

I am trying to measure performance and am wondering where on the Cloud Ahoy app you see the distance for take off?  I looked all over this app and can see the graphic of take off roll but not the net footage.

Thanks,

Russ

So, I just use whatever the app is showing in the Takeoff segment on the left. Here’s what it shows for a recent takeoff...see the brown highlighted field.

[carusoam]

For cloudAhoy, it helps to use a WAAS gps in place of the iPad’s internal gps.... I have an old skyradar for this.  The iPad doesn't collect enough data points to measure the short T/O run...

It may also cost a few bucks to have all the data from CA.  Their subscription logic changes every few years.

The take-off and landing data is worth the price when getting used to the Mooney performance...

It also works really well during flight training reviewing all the maneuvers and how well you performed later on the ground...

Connect the WiFi /gps, Record the flight, connect to WiFi at home, review the data...

Jeff's data is great... he gently accelerated the O3 to get the 1k’ T/O run.... matching the paint stripes on the ground...  

Best regards,

-a-

 

[Jeff_S]

I load the G1000 data logs into CloudAhoy. That’s about as detailed as it gets. You can basically relive the entire flight with the cockpit view!