1965 Mooney M20E

[colacoke2]

Where is best place to buy a new Hartzell top prop ? I have a Mooney M20E 200hp. fuel injected motor. with 326 hrs on a overhaul and a nagging ad every 100 hrs for eddy currency. I currently have a offer to buy a prop for 8300 shipped to shop and shop will give me 1000 for used prop and install at no cost. Does this sound like the best deal I can expect. Does anyone think its better to just pay the 325 each 100 hours? Please advise.

Thanks

[bonal]

You need to shop you eddy current inspect around. I was paying 325 and then I found a prop guy that does it for 125 based on how much I fly it would take a long long time to pay for a new prop with the EC savings. And about every year and a half we take a nice flight to San Luis Obispo for lunch while he checks our prop

 

 

 

Edited September 12, 2015 by bonal

[KSMooniac]

If that price is brand-new with the spinner and warranty, that doesn't sound like a bad deal at all IMO.  7 AMU buys a lot of eddy current inspections, though.  The Top Prop should give you a few extra knots in cruise, though.  Any idea how many overhauls the current prop has?  ie there is a finite life for the aluminum blades and if you're getting near the end, then opting for replacement while there is still value in the used prop might be wise.

FWIW, I sold my used McCauley with spinner for $2k a few years ago.  No AD of course.

[colacoke2]

The 8300 price is for new Hartzell top prop spinner and warranty. My mooney was subjected to a prop strike before I bought it. I don't have much info on the used propeller that is on it now. I have been through two eddy currencys prior and it checked out. Im somewhat worried that I may be stuck soon or worse it does crack and I'm left to ditch plane with no propeller. I have however spent a ton of money this year already. New avionics i.e. Garmin 340, Garmin 650, Garmin 255, Garmin 330 and two Garmin 106a. That being said Im pondering if I should replace with new for safety or am I over thinking this ??

Thanks 

[carl]

i just.found a.mechanic i like .

one.of.the things he said was sensenich prop  will do.it.for a.couple.hundred on the plane while.you wait.. near.lancaster.pa..

 news to.me 

 

i would be excited to do this every year. but i might not fly that much and have to go two years . 

if.the prop needs.replacing do it , of.course , if not ., just get the inspection 

 

 

[yvesg]

I think you can replace the hub only and keep the same blades? This might cost a bit less. This is what was done on mine.

Yves

[RobertGary1]

I dont believe any prob has actually failed in flight. There is also a permanent alternate method of compliance by converting it to an oil filled prop. If it cracks it would leak obvious oil.

 

-Robert

[Raptor05121]

 

Not to dig off topic, but I noticed you tach has color indications. Did it come like that? I have the same style tach but w/o the color.

[colacoke2]

Not to dig off topic, but I noticed you tach has color indications. Did it come like that? I have the same style tach but w/o the color.

It was in plane when I bought it. Im only guessing that it was swapped out during last overhaul. That is a guess only because it was zero hours or matches hours on new overhaul. not sure if you can zero them manually. I can take a closer  look and see what kind it is if you'd like. 

[Ned Gravel]

Mine came like that. I think it has to do with the operating limits in the type certificate being clearly visible. For example, the yellow arc (no prolonged operations) from 2150 to 2350 rpm (or words to that effect).

Ned Gravel

Lucky steward of C-FSWR, a '65 E model at Rockcliffe, Ontario, (CYRO)

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[Marauder]

Mine came like that. I think it has to do with the operating limits in the type certificate being clearly visible. For example, the yellow arc (no prolonged operations) from 2150 to 2350 rpm (or words to that effect).

Ned Gravel

Lucky steward of C-FSWR, a '65 E model at Rockcliffe, Ontario, (CYRO)

Sent from my iPad using Tapatalk

I suspect it was replaced with one that had been marked for a different propeller/engine combination. Mine was replaced at some point as well. The total hours did not match my logs and it looked like someone painted the 2100 to 2350 restriction on the glass.

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[RobertGary1]

If the tach doesn't match wouldn't it be possible to go through the logs and identify when it first stopped matching?

[Marauder]

If the tach doesn't match wouldn't it be possible to go through the logs and identify when it first stopped matching?

There is a lot of math in my logs showing the new tach time and correlating it with the original tach time. That all changed a couple of years ago when I added the electronic tach and had the true tach time set on it (including the correct redline markings).

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[Raptor05121]

Mine came like that. I think it has to do with the operating limits in the type certificate being clearly visible. For example, the yellow arc (no prolonged operations) from 2150 to 2350 rpm (or words to that effect).

 

 

Mine has the same limitations, but no color on the tach.

Isn't the limitation due to harmonics with the 2-blade? Does that still apply to 3-blades?

[KSMooniac]

Mine has the same limitations, but no color on the tach.

Isn't the limitation due to harmonics with the 2-blade? Does that still apply to 3-blades?

Yes, the limitations for each engine/prop combination are different and the tach needs to be marked accordingly.  If you have an STC'd aftermarket propeller, there will be instructions in the STC paperwork for tach markings, and of course they must be complied with to be airworthy.  

[Raptor05121]

Thanks, I didn't know that. I've got the STC for the 3-blade Hartzell but I never sat down and read it. I'll go over it tonight and see what it says. Back on topic, sorry OP.

[RobertGary1]

Engine makes a difference too. With the A3B6 I have a long list of prop combos and the limitations of each. Fortunately with my combo there are no limitations. So basically you can't assume any two Mooneys have the same limitations.

 

-Robert

[ArtVandelay]

Engine makes a difference too. With the A3B6 I have a long list of prop combos and the limitations of each. Fortunately with my combo there are no limitations. So basically you can't assume any two Mooneys have the same limitations.

 

-Robert

I have same engine, do you have a link to limitations?

[kerry]

I purchased a new top prop from Aircraft Propeller Works out of Florida for $7800.  

[carusoam]

The good news...

it it is an easy low cost update to get the gauge face rescreened to match your actual prop's rpm limitations for your plane.

the second 'it' added itself into the above line for some reason...

best regards,

-a-

[RobertGary1]

I have same engine, do you have a link to limitations?

No, it was included as part of the STC paperwork that authorizes changing to an A3B6. I can try to dig it up if you need it.

 

-Robert

[ArtVandelay]

No, it was included as part of the STC paperwork that authorizes changing to an A3B6. I can try to dig it up if you need it.

 

-Robert

I'll check my paperwork to see if I have it, thx

[ryoder]

You need to shop you eddy current inspect around. I was paying 325 and then I found a prop guy that does it for 125 based on how much I fly it would take a long long time to pay for a new prop with the ED savings. And about every year and a half we take a nice flight to San Luis Obispo for lunch while he checks our prop

Sorry to hear you have ED...

[ryoder]

Sensenich Propellors (KGVL) performed the (recently released) Hartzell Hub modification "fix" to remove the Eddy Current 100 hour inspection AD.

$1000.00

We did it about a year and a half ago while the prop was already off and in their shop for overhaul ... 

 

My prop guy responded well to my bargaining on the EC inspection.  I promised him next inspection we would tear it down and do a reseal and the dye job.  That will cost me 700 cash.

[bonal]

Sorry to hear you have ED...

fixed it Hah hah