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TOPIC: The Benefits of a 3 blade prop on a 182P?

The Benefits of a 3 blade prop on a 182P? 1 month 3 weeks ago #1139

  • Paul Gryko
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Les,
There are a few considerations on prop selection. 1) What are you going to be doing with the aircraft? 2) Why are you getting a 3 Bladed Prop? 3) What are you going to be doing down the road.

Lets start about Landing Performance. Most guys do not start here... the 3 bladed prop acts like a large air brake when on approach. We have 2 C-182's one with a 3 blade propeller and the other with a 2-blade stock prop. Depending on how you fly, you may find that the 3 blade will help quite a bit on short approaches with tighter corners. The 2-blade 182 lands really fast and uses up more runway than the 3-blade. I must also point out that full flap landings are not done to reduce wear. Flap selection is done based on runway length and conditions. When sufficient runway is available the 2 blade lands faster.

As far as climb performance you can discuss this till you are blue in the face. Everyone has their preference for make, size and whatnot but at the end of the day, it is all about how much "pull" the prop has. Having a larger prop that makes noise and annoys the neighbours may not get you anything other than "more noise". It is best to address those questions to the STC holders to see how the prop actually is set up on the aircraft. Not all are made equal.

Although not required by many STC's, going from a 2 blade to a 3 blade adds weight and a extra cycle of fatigue to the mount. With a 3 blade prop you now have 1.5 times the movement in the mount even if that movement is 1/3. I find a lot of guys put a 3 blade on then end up sending us the cracked mount. The STC may not require a beefed up mount but I can tell you that Cessna improved all spares mounts in 1990 by adding reinforcements to the engine Isolator pads. The aircraft may not show signs of vibration more but NDT inspection shows cracking. Keep in mind that Cessna required a structural change to the engine mount on the C-185 when the 3 bladed prop was added.

The 3 blade is the way to go if you want to climb and land in those "remote" places we all dream about going. The modern 2 blades are really good for speed. Just remember that you are flying a C-182 and it will only go so fast.

PG
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The Benefits of a 3 blade prop on a 182P? 2 months 1 week ago #1111

  • STEVE ELLS
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Hi, The other benefit is more prop tip to ground clearance.
Industry scuttlebutt claims slightly better climb rate but very little increase in cruise.
Major disadvantage is at overhaul time when you pay to have three blades overhauled instead of two.
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The Benefits of a 3 blade prop on a 182P? 2 months 1 week ago #1110

Hey Jose,

Thanks big time for the information. That MT-Prop seems incredible. Thats the improvement that I was looking for.

Thanks!!!!
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The Benefits of a 3 blade prop on a 182P? 2 months 1 week ago #1106

Les Pierce wrote:
.., what are the true benefits and cost of a 3 blade prop?
Hi, Les. Welcome.

If the engine is stock:
Pro: Aesthetics. Less vibration. Less noise
Cons: Even heavier nose. Hard to remove and install bottom cowling. No aerodynamic improvement.

Best option: MT-propeller 2 blade.

www.mt-propeller.com/en/entw/stcs/cessna_180_1.htm

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Last Edit: 2 months 1 week ago by Jose Lopezdelpuerto.
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The Benefits of a 3 blade prop on a 182P? 2 months 1 week ago #1104

HI CFA!
I was wondering what are the true benefits and cost of a 3 blade prop?
Thanks!
Les
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