Tim, I wouldn't be without my wobbly prop - would rather trade in the 914
for a 912S if pressed to the choice. You may have a long runway to base
yourself at but it's likely you will want to get in/out of a short grass
strip or a shortish, high, hot runway where every bit of performance is
welcome. There is also the consideration that the speed range of the Europa
is so wide (stall speed less than a third of maximum cruise speed) that a
fixed pitch prop inevitably seriously cramps performance at one or other end
of the range..
Regards, David Joyce, G-XSDJ
----- Original Message -----
From: "Tim Ward" <ward.t@xtra.co.nz>
Sent: Saturday, August 27, 2011 9:08 AM
Subject: Re: Europa-List: 914 Prop Question
>
> Tony,
> I am not an expert. However, I believe, if you opt for the 914 Rotax then
> a constant speed propeller would be appropriate. Simply to utilize the
> extra power in the most efficient way allows you to get out of difficult
> situations.
> Airmaster propeller system is just a delight to use and such a reassurance
> in the countryside we fly over here.
> I know it comes from this side of the Tasman however you will be very
> pleased with the ingenuity and simplicity of the Airmaster.
> .
>
> Hope all is well with you. Now flying the big one from the left seat I
> hear. I spent 14 years from the right seat and enjoyed it very much.
>
> Good luck on the industrial side, don't get locked out!
>
> Cheers,
>
> Tim
>
> Tim Ward
> 12 Waiwetu Street
> Fendalton,
> Christchurch, 8052
> New Zealand.
>
> ward.t@xtra.co.nz
>
> Ph 64 3 3515166
> Mob 0210640221
>
>
> On 27/08/2011, at 7:34 PM, Tony Renshaw <tonyrenshaw268@gmail.com> wrote:
>
>> <tonyrenshaw268@gmail.com>
>>
>> Its been a long while since I've had to think much about props. In truth
>> I still have a lot of building to go before I have to worry again. I'm
>> nevertheless wondering if more learned people would care to comment on
>> whether a fixed pitch prop, maybe a Catto prop, could work on a 914. I
>> know the pitch of the prop would need to be determined to suit the style
>> of flying I prefer, and lets say that is to go as fast as my
>> engine/airframe combination will allow, at 75% power. To that end I
>> reckon my takeoff performance will be compromised, but recent video of
>> Bob Catto speaking makes me believe it might only be in the order of a
>> couple of hundred feet. If I can deal with that, well what other
>> limitations are there that haven't come to mind yet? Does anyone know of
>> a builder of anything that has strapped a fixed pitch prop to a 914? I
>> don't and thats why I'm asking. There might be a bunch, I just don't know
>> them. Also, there might be some issues at altitude, although
>> simplisticall!
> y !
>> I believe the prop works in an IAS environment so maybe it doesn't
>> matter. I think there is probably even issues of aerodynamics that might
>> be wrong with that last statement, so I'm happy to read whatever someone
>> can contribute.
>> Thanks
>> Reg
>> Tony Renshaw
>>
>>
>>
>>
>>
>>
>
>
>
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