Acclaim Vs Type S

[drstephensugiono]

I read the descriptions on the difference on the “Type S” but Anyone has any pictures of the Type S upgrades like the gap seals or anything else?

[M20TN_Driver]

What are you looking to figure out?   If the upgrades are worth it?  
 

 

[drstephensugiono]

What are you looking to figure out?   If the upgrades are worth it?  
 
 

To see if the upgrade is worth it and what are the upgrades. I know the cowling is a little different and I would not want to do that. Maybe the gap seals?


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[LANCECASPER]

1 hour ago, drstephensugiono said:

I read the descriptions on the difference on the “Type S” but Anyone has any pictures of the Type S upgrades like the gap seals or anything else?

This article explains most of it. https://aviationconsumer.com/aircraftreviews/mooney-type-s-ludicrous-speed/

[drstephensugiono]

This article explains most of it. https://aviationconsumer.com/aircraftreviews/mooney-type-s-ludicrous-speed/

I read the article but no pics of the speed mods


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[LANCECASPER]

2 minutes ago, drstephensugiono said:

I read the article but no pics of the speed mods
 

Most people that I've talked to have said that they felt the Type S prop made the most of the 5 knot difference ..  naturally the most expensive part,

[drstephensugiono]

Most people that I've talked to have said that they felt the Type S prop made the most of the 5 knot difference ..  naturally the most expensive part,

AAh ok! Makes sense


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[Schllc]

The cowling is the same, there are aluminum vanes installed at the exit near the exhaust. This doesn’t require modifying the cowling. 
live owned both, the speed difference is minimal. 
the most expensive part is the prop, second is the nose gear doors, which are not currently available.  It requires part of the nose  gear truss be changed as well.
When the flap gap seals are installed the hinge covers are removed.

i had already changed the prop, and I’m about to paint so I did the cowl vanes and the flap gap seals. But I agree with lance, the prop is the biggest speed gain. The flap gap seals and cowl vanes provided 2-3 knits at best. 

[dkkim73]

I was surprised reading that article to hear they had so much trouble with cylinder temps. 

Except for hot days with break-in ROP profiles, I've found it easy to stay well below 380F even on cylinder 5. LOP gives even more headroom. Note I haven't tried over FL210 yet, so maybe in the thinner air there are issues. 

Anyhow, one of the several Mooney brokers with whom I spoke early on told me the Acclaim cowl has some clever design features where airflow shifts with AOA to obviate the need for cowl flaps. My observation is that it works well and keeps operation simpler. Only time I have to worry is actually too cool on descents in the extreme cold, but a bit of ROP as John Deakin advocated seems to work nicely. 

Not sure if the vanes/deflectors affect this (ETA mine is the type S). 

 

 

 

[exM20K]

34 minutes ago, dkkim73 said:

I was surprised reading that article to hear they had so much trouble with cylinder temps. 

Except for hot days with break-in ROP profiles, I've found it easy to stay well below 380F even on cylinder 5. LOP gives even more headroom. Note I haven't tried over FL210 yet, so maybe in the thinner air there are issues. 

Anyhow, one of the several Mooney brokers with whom I spoke early on told me the Acclaim cowl has some clever design features where airflow shifts with AOA to obviate the need for cowl flaps. My observation is that it works well and keeps operation simpler. Only time I have to worry is actually too cool on descents in the extreme cold, but a bit of ROP as John Deakin advocated seems to work nicely. 

Not sure if the vanes/deflectors affect this (ETA mine is the type S). 

 

 

 

I agree.  Even with my 50-hour-old cylinders, I don’t get above 385 rish in the climb to 17,000 at 33x2700x36GPH @ISA +15. Maybe continuing into the flight levels would heat them more, but I hardly ever go above 17,000.

The new cylinders do run warmer but not alarmingly so.  Cruise cooling is more than adequate.

-dan

[KSMooniac]

Would one of you Acclaim owners be willing to share some pics of the flap hinges, gap seals, internal cowl vanes and nose gear doors please?   

This efficiency nerd is very curious!  When my J was repainted in '23, the inboard flap hinge fairings were omitted on reassembly.  That didn't make me happy and some warranty updates (including those fairings) are getting corrected right now. I'm curious to see if the Acclaim flap hinges are the same as the older versions, or if they were updates to be less draggy without the fairings.  Sidebar, when I was at Lancair, our aero guy designed the flap hinges (similar offset hinge line like ours vs. a track system) and he made the cross-section of the hinge castings into symmetric airfoil shapes for drag reduction as well as avoiding extra parts.

[Fritz1]

factory flap gap seals are the simplest thing to do, they have a small gap unlike the lasar seals, flap hinge covers get knocked off, gain of 1-2 kt cruise, and maybe 100 ft climb, call Lasar or your favorite MSC and ask for factory flap gap seals, to my best recollection the long wingtips on were required to make the stall speed of 61 kt with the flap gap seals, not sure if the regular Acclaim has those long wingtips

[LANCECASPER]

4 hours ago, Fritz1 said:

factory flap gap seals are the simplest thing to do, they have a small gap unlike the lasar seals, flap hinge covers get knocked off, gain of 1-2 kt cruise, and maybe 100 ft climb, call Lasar or your favorite MSC and ask for factory flap gap seals, to my best recollection the long wingtips on were required to make the stall speed of 61 kt with the flap gap seals, not sure if the regular Acclaim has those long wingtips

All Acclaims have the long wingtips

[Geoff]

As stated the prop is likely worth 5 kts but only at high altitude, i.e above FL 180

I have a non-S with tks and had the flap gaps seals added and the flight data showed a 3-5kts increase in speed in the mid teens.  The cost was about $1,500 for the install and paint.  

Edited April 21 by Geoff

[drstephensugiono]

As stated the prop is likely worth 5 kts but only at high altitude, i.e above FL 180
I have a non-S with tks and had the flap gaps seals added and the flight data showed a 3-5kts increase in speed in the mid teens.  The cost was about $1,500 for the install and paint.  

Can you still get the gap seals?


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[LANCECASPER]

4 minutes ago, drstephensugiono said:

Can you still get the gap seals?

As @Schllc mentioned a few days ago on this post, he just recently added them to his Acclaim, so yes they are still available from Mooney through a Mooney Service Center.

[Schllc]

Flap gap seals and cowl vanes are on the shelf and available. 

[Geoff]

They are also easily fabricated.

[Geoff]

On 4/16/2025 at 5:33 AM, Schllc said:

The cowling is the same, there are aluminum vanes installed at the exit near the exhaust. This doesn’t require modifying the cowling. 
live owned both, the speed difference is minimal. 
the most expensive part is the prop, second is the nose gear doors, which are not currently available.  It requires part of the nose  gear truss be changed as well.
When the flap gap seals are installed the hinge covers are removed.

i had already changed the prop, and I’m about to paint so I did the cowl vanes and the flap gap seals. But I agree with lance, the prop is the biggest speed gain. The flap gap seals and cowl vanes provided 2-3 knits at best. 

Don Maxwell has the nose gear doors per a conversation with Paul last Thursday.

[Schllc]

3 hours ago, Geoff said:

Don Maxwell has the nose gear doors per a conversation with Paul last Thursday.

There is a modified nose gear truss needed as well. Those doors won’t work with the stock truss. Wonder if he has that too 

[Geoff]

He said he has the whole type s kit.