How to make a 201 faster

[toto]

54 minutes ago, Tx_Aggie said:

Can you post a link?

Bob posted quite a few albums on MS, although some of the photos are now missing. 

https://mooneyspace.com/profile/8913-bob_belville/content/?type=gallery_album_item&change_section=1

[Pasturepilot]

More fuel in the wings - been mentioned

Less ballast in the pilot seat - mentioned. 

More ballast in the back: Not mentioned. 

My C model is faster on long trips when my wife and I don't travel light. Mods are expensive. Efficiently loading the airplane is cheap. WIth the W&B information in ForeFlight I can load the plane pretty accurately to keep it within the envelope, but much nearer to the aft limit than just buzzing around with two people and full tanks. 

[bradp]

On 1/3/2022 at 12:31 PM, M20Doc said:

I installed one of these, it helped my speeds quite a bit.

No replacement for displacement.  Hehehe

[Tx_Aggie]

8 hours ago, toto said:

Bob posted quite a few albums on MS, although some of the photos are now missing. 

https://mooneyspace.com/profile/8913-bob_belville/content/?type=gallery_album_item&change_section=1

Thanks - searching under “Bob” didn’t yield anything. I appreciate the help!

[Fly Boomer]

10 hours ago, Tx_Aggie said:

Thanks - searching under “Bob” didn’t yield anything. I appreciate the help!

If you used the MooneySpace search, I don't think it works with 3-character search targets.

[carusoam]

For three letter searches… Google is the only way, MS can’t handle it.

Thanks to Toto for helping out!

Go MS!

Best regards,

-a-

[Shadrach]

On 10/16/2022 at 6:09 AM, Pasturepilot said:

More fuel in the wings - been mentioned

Less ballast in the pilot seat - mentioned. 

More ballast in the back: Not mentioned. 

My C model is faster on long trips when my wife and I don't travel light. Mods are expensive. Efficiently loading the airplane is cheap. WIth the W&B information in ForeFlight I can load the plane pretty accurately to keep it within the envelope, but much nearer to the aft limit than just buzzing around with two people and full tanks. 

Do you have a rough idea of the delta in speed between forward and aft CG? 

[AerostarDriver]

If you haven't done it all ready, gap seals and gear rigging are good ones to take a look at. 

[David Lloyd]

7 hours ago, Shadrach said:

Do you have a rough idea of the delta in speed between forward and aft CG? 

One day I will get around to taking Bubba and a couple cases of bottled water for a ride and find that answer.  Do a good check of the planned weight and balance.  Then check the cruise speed with both front seats full forward and the water on Bubba's lap and maybe under his feet.  Then Bubba somehow climbs in the back seat and the bottled water goes in the baggage.  Slide my seat all the way back.  Check the cruise speed again.  Does Bubba really weigh 250 like he claims?  Is it more? How much will the cruise speed change?

 

 

[A64Pilot]

3 minutes ago, David Lloyd said:

 How much will the cruise speed change?

My bet is 2 to 3 kts, so not much, but it’s real. But most don’t have the option of moving weight from the front to the rear, just loading the rear, but they still see some speed even at heavier weight, maybe 2 kts?

2 or 3 kts is a bigger actual number than we think, an honest couple of knots isn’t easy

[David Lloyd]

11 minutes ago, A64Pilot said:

My bet is 2 to 3 kts, so not much, but it’s real. But most don’t have the option of moving weight from the front to the rear, just loading the rear, but they still see some speed even at heavier weight, maybe 2 kts?

2 or 3 kts is a bigger actual number than we think, an honest couple of knots isn’t easy

That's what I expect also.  But with some proof.

Moving Bubba will probably be easier than getting 65 pound Jakie to the cargo area.  Her first trip she actually hopped up on the hat shelf!  Everybody sees Jack, wide-eyed and 15 pounds.  Jackie is black and hiding in the back.

[A64Pilot]

I like your idea of doing it in one flight, takes out a lot of variables. I would have rigged two water tanks and a transfer pump, but Bubba ought to work.

Does Bubba know?

[M20F]

Have you tried pushing the nose down?

[Hank]

3 hours ago, M20F said:

Have you tried pushing the nose down?

I do that on every descent from cruise to pattern altitude. What's it have to do with shifting the CG? It's pretty fast, too--pushing for 500 fpm nets 20-25 mph IAS.

[carusoam]

A pic of Bob’s M20E…

New prop, engine OH’d, fancy cowl, a few 201 mods, sweet paint!!!

For the M20J, and staying NA… the IO550 with the Rocket Engineering STC would net 300hp….

Convincing the RE guys to fire up the STC again will take more than money….

Bob was an EE….  

 

Go Mooney!

Best regards,

-a-

[Tx_Aggie]

Couldn’t decide which post to paste this to but this article is awesome - on the CAFE M20E. Step by step notes from Brian Seeley. Found this jewel in the downloads section from 2015. I’ll be looking to see what I can imitate. Thought it would be helpful for others too!

[carusoam]

1 minute ago, Tx_Aggie said:

Couldn’t decide which post to paste this to but this article is awesome - on the CAFE M20E. Step by step notes from Brian Seeley. Found this jewel in the downloads section from 2015. I’ll be looking to see what I can imitate. Thought it would be helpful for others too!

I’m not seeing what you posted…

Just an FYI…

-a-

[toto]

2 minutes ago, Tx_Aggie said:

Couldn’t decide which post to paste this to but this article is awesome - on the CAFE M20E. Step by step notes from Brian Seeley. Found this jewel in the downloads section from 2015. I’ll be looking to see what I can imitate. Thought it would be helpful for others too!

Looks like a broken link?

[Tx_Aggie]

How about this try?

scan0025.pdf

[carusoam]

1 minute ago, Tx_Aggie said:

How about this try?

scan0025.pdf 1.85 MB · 2 downloads

Bingo!

That worked.

Thank you.

Best regards,

-a-

[Mcstealth]

On 1/4/2022 at 5:14 AM, larrynimmo said:

I with help of ai I installed a Lycomming factory io360a3b6d in 2018…and it ran well, but not great numbers…the annual in 2021, with 450 hours on the engine, we sent out the mag to get it inspected…it cost $1,500 to get repairs done including replacing both coils.

engine runs with EGTs at least 50 degrees colder LOP…much greater cruise speed at all power settings….and better fuel economy.

my J had never really come close to book numbers…now I am.  At 2500 rpm, 25.8mp 100rop I was able to achieve 165k true airspeed in both directions (2,300#)

Was the timing set to 20° or 25°?

Sounds like one of those instances where the timing was wrong for the engine. 

[jetdriven]

How did you measure the 165kt in both directions?

 

[hammdo]

Link to a nicer version:

http://sustainableaviation.org/wp-content/uploads/2018/03/SportAviation-July-1982-AOA-Mooney.pdf

[rickseeman]

On 1/2/2022 at 10:38 PM, Niko182 said:

Electro air and mt prop. Gann pap engine?

I assumed the MT prop would be slower. Am I wrong?

[larrynimmo]

9 hours ago, Mcstealth said:

Was the timing set to 20° or 25°?

Sounds like one of those instances where the timing was wrong for the engine. 

Believe it or not, timing was always within one degree of 25BTDC…my speed run was in light wind conditions (I have an Aspen Promax) which helps distinguish wind…165 in back to back directions…didn’t do the 4 way method.