Your guess is correct, Graham. I visited the Warp Drive stand at S n F last
year and they confirmed they have only one mould for all blades.
Regards,
William
----- Original Message -----
From: "Graham Singleton" <grahamsingleton@btinternet.com>
Sent: Wednesday, April 25, 2007 2:25 PM
Subject: Re: Europa-List: Warp Drive propeller blades
> <grahamsingleton@btinternet.com>
>
> Phil
> it's the power absorption. The tapered blade matches the power output of
> the 912, so allows the engine to develop enough rpm for the power needed
> for take oiff and climb..
> 912S & 914 need more blade area to absorb the power. Tapered blades will
> over rev too easily. Tapering a broad blade is maybe the cheap way to do
> it, they can use the same mould for either then cut to suit. My guess
> anyway.
> Graham
>
> flyingphil2 wrote:
>>
>> Hi,
>> I've searched this forum to see if I can find the answer but I can't.
>> So, can anyone tell me why on the 62" Warp Drive ground adjustable
>> propeller, tapered blades are recommended for a Rotax 912 and broad
>> blades are recommended for a 912S and 914?
>>
>> What is the issue with running a tapered blade on a 912S or a broad blade
>> on a 912?
>>
>> Yours,
>>
>> 'Newbie to Propeller design'
>>
>>
>>
>>
>>
>>
>> Visit - www.EuropaOwners.org
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
> --
> Graham Singleton
>
> Tel: +441629820187
> Mob: +447739582005
>
>
>
|