Considering switch to Hartzell 2-Blade Prop from MT

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jwx96
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by jwx96 »

I have the MTV-12-B which is the original prop on my 2003 DA40. I haven't heard about the vibration cracks letting water into the wood core either. It's been through 3 overhauls and there are no cracks. It's lightweight and smooth. Dynamic balancing after the last overhaul made a noticeable difference. Shutdown from idle is very smooth. I was getting dings on the trailing edge of the prop after maintenance (from the cowling) but a discussion with my mechanic, and BladeSox to protect the blades during decowling/cowling took care of that problem.
BladeSox.jpg
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by Rich »

jwx96 wrote: Wed Nov 03, 2021 10:07 pm I have the MTV-12-B which is the original prop on my 2003 DA40. I haven't heard about the vibration cracks letting water into the wood core either. It's been through 3 overhauls and there are no cracks. It's lightweight and smooth. Dynamic balancing after the last overhaul made a noticeable difference. Shutdown from idle is very smooth. I was getting dings on the trailing edge of the prop after maintenance (from the cowling) but a discussion with my mechanic, and BladeSox to protect the blades during decowling/cowling took care of that problem.BladeSox.jpg
Those look pretty cool. Could you share the ordering dimensions for us with the same prop?
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by lgrennlee »

I have the Composite 2-Blade. I really like it. The lowest idle isn't great vibration-wise but anything above 900 seems fine to me. I have not flown any other DA40's. Another advantage of both Hartzell propellers is that they can be run at 2700 continuously (Or 2550 which is the # that is best for the Power Flow allegedly). The Aluminum version is not compatible with Power Flow.

Notes on RPM settings:
viewtopic.php?t=5357&start=10

I operate above 2400 regularly and don't see problems with my CHT's.
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Rich
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by Rich »

lgrennlee wrote: Thu Nov 04, 2021 12:26 am I have the Composite 2-Blade. I really like it. The lowest idle isn't great vibration-wise but anything above 900 seems fine to me. I have not flown any other DA40's. Another advantage of both Hartzell propellers is that they can be run at 2700 continuously (Or 2550 which is the # that is best for the Power Flow allegedly). The Aluminum version is not compatible with Power Flow.

Notes on RPM settings:
viewtopic.php?t=5357&start=10

I operate above 2400 regularly and don't see problems with my CHT's.
PF is tuned for 2450. The new MT in the DA40 magically approves continuous operation at 2700. Most of us ignore the 2400 RPM limitation, if desired, for the older prop, as both the propeller and engine are independently certified for continuous operation at 2700. There are 2 aluminum Hartzells. One is and one is not certified for use with Powerflow. Higher RPM gives you higher CHTs, but they may or not reach problematic levels.
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by jwx96 »

Here's the order form I sent in. Please post a photo if you get something fancy.
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by nathanda40 »

Looked at the composite 2-blade but pricing is kind of crazy. We don't see a major enough benefit to warrant the cost for our club.

Looks like it requires the 102603 "oil cooler modification" kit? Our serial is listed as "needing it" unfortunately. One question I have is that we found a temporary prop which is the HC-C2YR-1BF we were going to use while waiting for the permanent one to come in. I was trying to find the STC for this and it basically says for EASA countries only? Is this prop version not an option for us?

https://hartzellprop.com/wp-content/upl ... 40EASA.pdf
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by Rich »

nathanda40 wrote: Fri Nov 05, 2021 12:47 am Looked at the composite 2-blade but pricing is kind of crazy. We don't see a major enough benefit to warrant the cost for our club.

Looks like it requires the 102603 "oil cooler modification" kit? Our serial is listed as "needing it" unfortunately. One question I have is that we found a temporary prop which is the HC-C2YR-1BF we were going to use while waiting for the permanent one to come in. I was trying to find the STC for this and it basically says for EASA countries only? Is this prop version not an option for us?

https://hartzellprop.com/wp-content/upl ... 40EASA.pdf
The big deal is this appears to be the equivalent of the original Hartzel prop for the DAS40 and can’t be used with the PowerFlow. You don’t say whether you have the PF but with the exclusion for US-registered planes I wouldn’t advise installing it in any case.
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by Rich »

Speaking of blade noise there is a Super Cub based here at Prineville with big fat tires and one of those super large 84” props. Half a mile away you have to interrupt conversation while it takes off :shock:
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by nathanda40 »

Rich wrote: Fri Nov 05, 2021 1:27 am
nathanda40 wrote: Fri Nov 05, 2021 12:47 am Looked at the composite 2-blade but pricing is kind of crazy. We don't see a major enough benefit to warrant the cost for our club.

Looks like it requires the 102603 "oil cooler modification" kit? Our serial is listed as "needing it" unfortunately. One question I have is that we found a temporary prop which is the HC-C2YR-1BF we were going to use while waiting for the permanent one to come in. I was trying to find the STC for this and it basically says for EASA countries only? Is this prop version not an option for us?

https://hartzellprop.com/wp-content/upl ... 40EASA.pdf
The big deal is this appears to be the equivalent of the original Hartzel prop for the DAS40 and can’t be used with the PowerFlow. You don’t say whether you have the PF but with the exclusion for US-registered planes I wouldn’t advise installing it in any case.
But what could make it acceptable overseas and not here? Strange. We do not have the power flow
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Re: Considering switch to Hartzell 2-Blade Prop from MT

Post by Rich »

nathanda40 wrote: Fri Nov 05, 2021 1:47 am
Rich wrote: Fri Nov 05, 2021 1:27 am
nathanda40 wrote: Fri Nov 05, 2021 12:47 am Looked at the composite 2-blade but pricing is kind of crazy. We don't see a major enough benefit to warrant the cost for our club.

Looks like it requires the 102603 "oil cooler modification" kit? Our serial is listed as "needing it" unfortunately. One question I have is that we found a temporary prop which is the HC-C2YR-1BF we were going to use while waiting for the permanent one to come in. I was trying to find the STC for this and it basically says for EASA countries only? Is this prop version not an option for us?

https://hartzellprop.com/wp-content/upl ... 40EASA.pdf
The big deal is this appears to be the equivalent of the original Hartzel prop for the DAS40 and can’t be used with the PowerFlow. You don’t say whether you have the PF but with the exclusion for US-registered planes I wouldn’t advise installing it in any case.
But what could make it acceptable overseas and not here? Strange. We do not have the power flow
I looked more carefully at the Hartzell link. It says the STC is not for sale (for US registered planes). If you have an IA that will do a 337 using an existing prop and certify its airworthiness you could presumably do this temporary change. I assume you’re switching from an MT, so a W&B modification, and then again with the actual new prop, which is heavier yet.

What’s the hurry? Is the MT unserviceable? BTW it looks like the oil cooler mod kit can be included with the new prop. This is something I hadn’t noticed before. What’s that about?
2002 DA40-180: MT, PowerFlow, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210, Orion 600 LED, XeVision, Aspen E5
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