Tim Jodice

all J models are inadvertent systems. My experience is the same as @milotron they are a great tool to have if you regularly fly in the winter. my experience is the same as @jlunseth many times when there should be ice (standard temperature decrease with altitude) there isn't or you on top before it goes below freezing. Flights you probably wouldn't try if you didn't have a way to keep the ice off if it was there.

They suggest that you overhaul the metering pump every 5 years or 2000 hours. certainly not practical for most people so the have a service bulletin to check it. https://www.cav-systems.com/store/tks-pump-flow-rate-test-kit-mooney/ mine hadn't be overhauled ever. installed in 88. $3100 for an overhaul, filter, seals and shipping.

Just curious. Nothing but happiness here

That all makes sense. What made you post it here?

PI finally recorded the sound levels. I was not at 9500 feet today but in the future I will do an apples to apples comparison. I didn't take pictures of the original prop so you will need to trust me on those numbers This does not look that impressive but the perceived noise is so much better. Maybe some education for me on how measuring sound works? @carusoam please help with the orientation of my photos OEM McCauley Idle 1200 80 db Take off 103 db Cruise 9500' 2600 RPM 97 db 2200 RPM 87db MT prop Idle 1200 78 db Take off 96 Climb 2700RPM 2000' 96db Cruise 7500' WOT 2700 93.8 db 2500 92.2 db 2300 89 db 2100 89 db Decending 2000 RPM 23" MP 91 db 1200 RPM 17" MP 82.5 db

Why is it all about the panel? That panel looks amazing to me just the way it is. Do something that hasn't been done. IO-390, composite prop, power flow exhaust etc.

One hour after a post on MS I have found an afternoon ride back!

I need to drop my airplane off at Griffin Avionics in Hyannis around 8. It is getting autopilot (pitch servo) repair and they think they can fix it in house same day. Even if they need to send it out i will still be picking it up with the servo out. I would then need a ride back to Hyannis around 5. Any help either way would be appreciated. 5 zero 8 2 two1 7 two five 3.

I couldn't find anything on COPA separating the metal three blade to the composite three blade but they say the three to four blade is purely cosmetic. I am guessing that is the case because on a Cirrus even the metal blade is a scimitar current design prop so the only difference is what it is made out of. @FoxMike and myself went one blade up, composite and propellers designed three or four decades later than the original propellers.

I have 60 hours on the prop now and thought I would update how it is doing. It does help cooling a little. It took about a dozen flights to consistently see a lower temp so I knew it wasn't the variables like temp altitude weight etc. It really doesn't have a sweet spot RPM regarding vibration, spin it faster if you want to go faster. I have tried that from 2000-2700 I had the opportunity to fly through some rain and the pictures show that they have fixed the paint peeling issue. The rain was hard enough to take the boot adhesive off close to the hub but no problems at the tip. Like most say about Mooneys I want to go fast so unless I am below 5000 I almost always have it at 26-2700 RPM in cruise. I am still experimenting with coming down. When I am VFR I like trying to be efficient coming down so I try to time it so I come down at cruise IAS of about 140. With the 2 blade most lower (2200 down) RPM was not very smooth. I have found that 1800-2000 is a nice RPM for coming down.

The more you teach brings up more questions. It takes power to make noise so how much power does a propeller waste making noise? What is little bit of red close to the center of the two blade?

I use both. Garmin is less for the the 430. Garmin does not support MX20 for repair or updates. Fortunately Jeppesen still provides updates. I keep the MX20 current because it provides geo referenced charts. I hate clutter so anything that helps reduce/eliminate stuff on my lap the better.

I will be salivating until then. I am unsuccessful at finding a post that I had that I have read in the past about a mooney (I think E model) owner who put a 3 blade hartzell pointy tip prop on. Saying that it was just a little bit smoother, didn’t see a climb increase and lost almost 5 knots in cruise. I was willing to loose top speed to get the smoother, quieter ride with the MT 3 blade yet as a learned earlier this week with a 4 way gps it with out a doubt did not loose speed. The actual numbers (154 to 156) came up a little faster but i was also lighter so I would dismiss the 2 knots. This is compared to what I think most consider the best 201 prop, the McCauley C214 OEM propeller. For MT to add all the benefits of a 3 blade with out the loss how do they do it? Material? Scimitar blade? It being a smaller diameter? More modern design? It amazes me because it has 2 things that should be bad for efficiency (3 blades and smaller diameter) yet no loss. Did I say I am salivating until you write back? Thank you for taking the time to write all of this in a way the non engineers can understand.

Do you know why more blades have better take off and low speed climb performance? Based off what you said about efficiency make me think that more blades are more efficient at low speeds. Why is it popular to have a long (obnoxiouly loud) 2 blade prop on float planes? My guess is to have a big prop disc to get alot of static thust to get out of the water. From what I have read a 3 blade has better low speed performance in exchange for top speed efficiency.

My original propeller was overhauled in 17 and had about 450 hours on it. I was talking to a friend that owns a 201 that needed a new propeller. I sold mine to him. After reading and talking to people that own a MT propeller I wanted one. What he offered me i couldn't refuse so that is what made me buy it. I have be a mechanic of some sort since I was 16, I love things that have something to with making what ever vehicle it is better. Some people feel the same about a set of GTN750s. I am reminded how awesome this propeller is every time I push the throttle forward for taking off. Lastly I get to reset the maintenance clock on one of the most important parts of an airplane. Anyone in the area that want to fly behind it your welcome to come flying.

This is with the throttle wide open, mixture cutoff and prop all the way out. Using the mixture is the only (without loading your exhaust system with fuel) way you can go from power to absolutely no power and back again instantly. In my experience with the original propeller the difference between idling and with the mixture pulled wasn't much different. With the MT it is still making power until you pull the mixture. My guess is it is because if idle is set at 600 and the prop can slow it down to 600 it will be making a little power. With the original prop there was a noticeable difference in drag between a windmilling and a stopped prop. Stopping a 2 blade was hard and wasted altitude doing it but it did glide better with it stopped. I haven't tried to stop the 3 blade.

I did a GPS run yesterday and confirmed that the propeller does not reduce cruise speed. It actually came out to be 2 knots faster but i was about 100 pounds lighter than last time so it is probably a wash. The part that I found amazing is glide range. Based off foreflight 11:1 and with it factoring wind it is about 30% better. Crazy right? With the prop pulled all the way out with the original 2 blade it would slow down to about 1400-1500 at 90 IAS. The MT slows down to 600-700 at 90 IAS. I would have thought that a 3 blade would make it worse. My thought is simply the fact that it allows the engine to spin slower so it makes less drag. What do you think?

Me too. I was starting to have withdrawal. What would the world be without Mooney Space?

I came up with the same when I ran the numbers. I think most people don't want to be honest with themselves as to how much it cost to run an airplane. I originally projected $195-200 an hour for a J. That is all in paying for it, depreciation, insurance, hangar/tie down, all maintenance, engine/prop reserves (blew the prop reserve idea) and elective upgrades. I update the numbers every few months and the actual numbers are trending down. Why? I fly it slower than I thought I would. Maintenance has been great. I have had 1 problem that grounded me(mag failure). These airplanes just run. December will be my 1 year anniversary with this (FANTASTIC) airplane. Lets see what annual #2 is like. I do mid year work over and above oil changes so i don't snow ball it in to an annual. The engine and landing gear get more attention throughout the year.

I experienced the same thing. With the cowl flaps wide open i can hear it and feel it in the floor, in trail just hear it. I couldn't tell a difference with the old prop. Any thoughts why? Up until reading your pirep I thought it was because of changing from a 2 to a 3 blade. Scimitar blade technology?

Carburetor? Parallel valve? Those are the only differences i can think of.

Out of curiosity I called Peter at MT Propeller and asked if it was possible to put a MT prop on a M20C. He said it is possible it would need to be flown to them in Deland, FL and would need to have a field approval done that would cost $3-4,000. Most would consider that not practical but it is possible. I suppose it depends on what makes you happy. In the short time I have had mine 2 people have said they would never spend almost $14,000 for a prop. Yet 1 has a $40,000+ panel that I would never buy.

That was the first thing that crossed my mind. It was run by the good mag. Another question for all of you. All plugs are supposed to be gapped to .018-.021 right? This had to be at least a 1/4" jump. If there is enough power to jump a gap like that why not use .060 automotive like gap?