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From: "George Lendich" <lendich@aanet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3751448@logan.com>
Subject: Re: [FlyRotary] Re: Interested in cog-belt PRSUs?
Date: Fri, 10 Jul 2009 09:06:44 +1000
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 Michael and Bernie,
With the rotary, that would mean an anti-clockwise prop rotation, view from 
the cockpit, 1.8:1 is right on the mark as compared to the Ford planetary 
reduction which is 2.85:1 with clockwise rotation i.e. 1.85+1.
George (down under).

> The previous sites are a bit confusing to navigate.
> Here is an other one that seems a bit cleaner and should facilitate the
> translation from Portugese to English
> http://www.mataddesign.com/asas/index.htm
>
> Be aware that most web translators dont come close to doing realistic
> translation.
> Mr Coelho's name translates as Altair Rabit.
> He has a number of interesting aircraft designs to his name. ( see under
> "projetos")
>
> under "Vendas" (sales) we arrive at
>
> http://www.mataddesign.com/asas/mecan.htm
> according to this he offers 3 diferent redrives.
>
> 1) AC 51 a V belt unit for VW conversions rated at  80 hp
> 2) AC 53 a cog belt unit rated at 180 hp w peaks of 200 hp
> 3) AC 54 same as AC 53 but rated at 120 to 140 hp
>
> the text for AC 53 as translated by Babblefish and some additional clean 
> up
> reads as follow:
>
> Reduction for engine VW AP-2000 Makes real the dream to fly for those 
> people
> whom they desire to construct an experimental airplane. The use of the
> PolyCHAIN belt allows a compact construction due the biggest capacity of
> transmission of power with lesser width of belt.
>
> To handle the aspect of torcional vibration the following measures had 
> been
> taken:
> - Use of integral projection
> - Application of a harmonic pulley
> - Elastic Coupling
> - Determination and positioning of the elasticity of the supports of the
> engine
>
> Its initial calculation was foreseeing the power use up to 180 hp with 
> cycle
> of 6/6hs of functioning with 200 peaks of hp for 5min. at 5500 rpm.
> A minimum life of 2000hrs  is estimated for the belt.
> - Ratio: 1,8x1 or  1,9 x 1
> - Project: Altair Coelho - 2003
> - The engine positioned vertically thus allowing one better drawing of the
> front cowling of the airplane.
> - It Is increased approximately oil capacity in Carter in 1,5 liters.
> - Motor AP 2000 ( VW) in cases in the same position of an aeronautical of
> 150HP.
>
> Michael in Maine
>
>
>
>
>> > http://www.altaircoelho.com.br
>> >
>> > http://www.altaircoelho.com.br/ac53fotos.html?Submit2=Fotos+AC+53
>> >
>> > Thanks, Bernie.
>> Bernie,
>>
>> To see the site in somewhat imperfect English, start Google, at the top
>> click 'more' then click 'even more' then on the right side under
>> 'communicate, show & share', click 'translate'.
>>
>> copy the URL for the website to the translate box & select Portuguese to
>> English & hit  'translate'.
>>
>> Charlie
>
>
>
> --
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