Prince Prop Update

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Prince Prop Update

Postby levyland » Sat Nov 29, 2014 2:59 am

Howdy Everyone,

I recently came back to NZ from the States with a 80x36 Prince Prop.

Like Steve I had been flying with a Catto which has incredible take off capabilities, but terrible cruise 69 knots GS.

I have one word word to say about this prop AWESOME!

I chucked it on and my static was 5430 but I could not hold the brakes on, but will report back with an exact static.

Once I released the brakes the initial thrust was phenomenal.

I have not done an actual pull test yet but is was very impressive with the airplane literally jumping off the ground equal to or a wee bit better than the Catto.

The most important result was I picked up 10 knots on my ground speed to 79 knots GS.

My goal is to go 90 knots GS and I think with a bit of increased pitch (possibly 40) and a couple of other clean ups on the airframe I will be knocking on that.

Equally important was the problems I was having getting the airplane on the step and out of the low tail syndrome has been eliminated.

Also the elevator and horizontal stabiliser are now parallel.

I will report more once I get additional flight data. There has been quite a bit of discussion as to what prop is best and at this stage I am very impressed with the Prince.
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Re: Prince Prop Update

Postby orenjr » Sat Nov 29, 2014 8:23 am

Levy
Do you have a 80x36 or a 80x38 .
In the other post you said you had a 80x38.
Sounds like you are getting great performance.
I hope someone will give me some input on what prop I should use on my 914.
Lonnie is suggesting a 78x48 but i see everyone else is using a longer prop with less pitch.
Keep us updated on your performance.
Thanks! Oren
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Re: Prince Prop Update

Postby levyland » Sat Nov 29, 2014 2:06 pm

Im sorry it is a 80 x 38 yes it is working very well. More info as I get some more hours cheers John
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Re: Prince Prop Update

Postby Allan » Sun Nov 30, 2014 8:44 am

John,

What's your indicated air speed?

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Re: Prince Prop Update

Postby Av8r3400 » Sun Nov 30, 2014 4:05 pm

Have you done the Mass Moment of Inertia test on it? I'd love to know how it scored...

http://www.aviasport.com/Rotax/Document ... 11ul91.pdf
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Re: Prince Prop Update

Postby Av8r3400 » Fri Jan 23, 2015 11:54 pm

Any updates to your Prince Prop flight testing?
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