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08-18-2007, 02:21 PM
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#1 |
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Flyin' Around
 Join Date: Feb 2007
Location: Stratford-upon-Avon, UK
Posts: 15
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Prop suggestion for EF Yak and Brillelli 46
Im a looking for a good prop for my Brillelli 46 which I have in an EF 74" Yak. I currently have a Master Airscrew 20x8 which is reasonable. The two props that I am looking at are either the Mejzlik 21x8 2 blade or Mejzlik 20x10 3 blade. Im wondering whether the 3 blade would be too much for the engine/airframe combo.
Thanks, James |
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08-19-2007, 12:28 AM
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#2 |
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GRAVITY SUCKS
 
Join Date: Jan 2006
Location: florida
Posts: 4,281
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Re: Prop suggestion for EF Yak and Brillelli 46
iam using a xoar 22x8 and it seems to like it.
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08-19-2007, 12:56 AM
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#3 |
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Bad-ass Super Contributer!
Join Date: Jul 2006
Posts: 801
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Re: Prop suggestion for EF Yak and Brillelli 46
The Mej 21X8 should be perfect.
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08-19-2007, 03:03 PM
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#4 |
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Flyin' Around
Join Date: Feb 2007
Location: Stratford-upon-Avon, UK
Posts: 15
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Re: Prop suggestion for EF Yak and Brillelli 46
I quite like the idea of the 20x10 Mejzlik 3-Blade, would this be too much?
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08-19-2007, 03:11 PM
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#5 |
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Bad-ass Super Contributer!
Join Date: Mar 2006
Location: Aguadilla, Puerto Rico
Age: 31
Posts: 208
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Re: Prop suggestion for EF Yak and Brillelli 46
a menz 22x8 works great on the brilleli 46cc plenty of pull
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08-24-2007, 04:43 AM
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#6 |
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Flyin' Around
Join Date: Dec 2006
Location: Avon, MN USA
Posts: 26
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Re: Prop suggestion for EF Yak and Brillelli 46
I would go with the 21x8. Some people are even dropping to a 20x8 to reduce the thrust and make hovering easier. With a 21x8 the throttle can be so low it is hard to keep it from climbing or dropping. I do believe the 20x10 3 blade my be a lot of load. I would go with the 21x8, or even a 20x8 in a CF prop.
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08-24-2007, 12:10 PM
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#7 |
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Flyin' Around
Join Date: Feb 2007
Location: Stratford-upon-Avon, UK
Posts: 15
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Re: Prop suggestion for EF Yak and Brillelli 46
Would the revs still be within an acceptable range with a lighter carbon 20x8? Im running 7000rpm static with a heavier Master Airscrew 20x8.
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08-24-2007, 05:46 PM
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#8 | ||||||||||||||||||
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Father of the Scale Furum
Join Date: Jan 2006
Location: Chapel Hill, TN
Age: 34
Posts: 4,577
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Re: Prop suggestion for EF Yak and Brillelli 46
I think most carbon props are heavier than wood ehh?
__________________
"I'll have the roast duck with the mango salsa" Kit builders check out.... http://bobflies.com/ 2.4 GHz is for your home telephone... 14MZ and 72 MHz for huckin' baby!! |
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08-24-2007, 05:57 PM
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#9 |
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Flyin' Around
Join Date: Feb 2007
Location: Stratford-upon-Avon, UK
Posts: 15
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Re: Prop suggestion for EF Yak and Brillelli 46
The Master Airscrew is not a wooden prop, its a plastic composite.
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08-24-2007, 09:33 PM
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#10 |
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QQ 102'' @ the float fly!
Join Date: Jun 2006
Location: Pa
Age: 37
Posts: 280
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Re: Prop suggestion for EF Yak and Brillelli 46
I have a brill. 46 on my hanger 9 260 started out with a troy (tbm) 21x8 and now have a xoar 20x8 on it. This is the prop that Scott reccomended to me and it is fantastic, better and lighter, great vertical pull. Plane weight is 13.4lbs
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08-25-2007, 01:44 AM
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#11 |
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Flyin' Around
Join Date: Dec 2006
Location: Avon, MN USA
Posts: 26
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Re: Prop suggestion for EF Yak and Brillelli 46
That engine has a no load red line of 13,500 rpm. You will never, ever get close to over revving it with any prop 18" or larger.
I like wood props for a couple reasons. They are cheaper, and they spool up faster than a CF prop because of the lower weight. Less flywheel effect. On the bench, A Xoar will out pull the same size Mejzlik CF prop. I have never ran a Vess, but from what customers have told me, they pull even better. |
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