Today's Message Index:
----------------------
1. 04:41 AM - Re: 2 or 3 blade prop?? (Don Hall)
2. 10:57 AM - Re: 2 or 3 blade prop?? (Charlie England)
3. 01:04 PM - ACS EFIS? (Jeff Williams)
Message 1
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| Subject: | 2 or 3 blade prop?? |
--> RV7-List message posted by: "Don Hall" <dhall@donka.net>
3-blade is less noisy. I bet that's a more important consideration in
Europe than here in the States.
-----Original Message-----
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of Alf Olav Frog
Subject: RV7-List: 2 or 3 blade prop??
--> RV7-List message posted by: Alf Olav Frog <alfolavf@online.no>
>
>
> Hello again!
>
> Thanks for all the inputs regarding the right hand seat! Great that
there's a forum like this for us who are living outside of the "action"!
>
> Since I got so good response on my first issue, here's another choice I've
to make: 2 or 3 blade prop?
>
> Ok, I know that the engine-choice is the first and biggest, but there I'm
so far looking into different options.... what IS decided however, is a
CS-prop.
>
> When the engine-choice is made, I'll check out the producers opinon
regarding this, but what do you guys out there think??
> I was thinking that since I'm building a 7A, the distance to the ground
from the propellertips would be slightly greater (better) with a 3 blade
since this prop has a smaller diameter??
> Is there any big advantages or disadvantages with a 3 blade vs a 2
> blade? (expect for the price...) Is a 2 blade more efficient maybe??
>
>
> Best regards Alf Olav Frog
>
>
Message 2
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| Subject: | Re: 2 or 3 blade prop?? |
--> RV7-List message posted by: Charlie England <ceengland@bellsouth.net>
Alf Olav Frog wrote:
>--> RV7-List message posted by: Alf Olav Frog <alfolavf@online.no>
>
>
>
>
>>Hello again!
>>
>>Thanks for all the inputs regarding the right hand seat! Great that there's a
forum like this for us who are living outside of the "action"!
>>
>>Since I got so good response on my first issue, here's another choice I've to
make: 2 or 3 blade prop?
>>
>>Ok, I know that the engine-choice is the first and biggest, but there I'm so
far looking into different options.... what IS decided however, is a CS-prop.
>>
>>When the engine-choice is made, I'll check out the producers opinon regarding
this, but what do you guys out there think??
>>I was thinking that since I'm building a 7A, the distance to the ground from
the propellertips would be slightly greater (better) with a 3 blade since this
prop has a smaller diameter??
>>Is there any big advantages or disadvantages with a 3 blade vs a 2 blade? (expect
for the price...)
>>Is a 2 blade more efficient maybe??
>>
>>
>>
>>Best regards Alf Olav Frog
>>
2 blades are usually cheaper & usually slightly faster. Someone will now
jump in with info that their particular 3 blade is faster. ;-) 3 blades
are usually smaller in diameter but there should be plenty of ground
clearance anyway. 3 blades are usually a bit quieter & can be a bit
smoother. Offsetting the quieter feature of the smaller diameter 3 blade
is the fact that at low speeds the larger the diameter the more
efficient (higher thrust per hp) the prop will be. Some pay the extra
money for the 'cool' factor of the 3 blades.
My opinion is that new modern airfoil 2 blades & 3 blades are close
enough that the decision for me would come down to money.
Charlie
Message 3
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--> RV7-List message posted by: Jeff Williams <Tramsootru@direcway.com>
Hey guys..
Does anyone know if ACS has a standalone EFIS or if they still only offer
the engine management system?
thanks
Jeff
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