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 Post subject: Dc3 spinners
PostPosted: Mon Dec 28, 2020 2:04 am 
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Watching a old documentary there was a DC3 with small spinners, that's something I personally have not seen before, I can't see any images on Google of any, there are some images with quite large ones like the Air Research Maximiser kit
http://www.michaelprophet.com/News_arti ... rsions.php
Anyone have any information about them, just curious.


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 Post subject: Re: Dc3 spinners
PostPosted: Mon Dec 28, 2020 3:09 am 
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I'd like to add another question; what is the story with the length of these prop shafts? Other R-2000 installations seem to have the typical prop hub/nose case distance.

Image


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 Post subject: Re: Dc3 spinners
PostPosted: Mon Dec 28, 2020 10:34 am 
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mike furline wrote:
I'd like to add another question; what is the story with the length of these prop shafts? Other R-2000 installations seem to have the typical prop hub/nose case distance.

Image





The EC-47Q mounted the R-2000. The following all seem to have the extended prop shaft.


http://silverhawkauthor.com/images/site ... 08273-.jpg


https://sanangelolive.com/sites/default ... k=SnN6JdQY


https://www.google.com/imgres?imgurl=x- ... HQAAAAAQHQ


http://ec47.com/storage/BasicImage/over ... -747_2.jpg

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 Post subject: Re: Dc3 spinners
PostPosted: Mon Dec 28, 2020 8:45 pm 
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Spinners on the props only appeared on some of the earliest delivered DST. They were on Wright powered DST's of American and Eastern and P&W powered DST-A's of United. The only thing I can discern (pure speculation here) is that these early deliveries had counter weighted "controllable pitch" propellers and when "constant speed" propellers were installed, the spinners disappeared (though I do see pictures of ships with counter weighted "controllable pitch props without spinners.

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C2j


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 Post subject: Re: Dc3 spinners
PostPosted: Mon Dec 28, 2020 11:43 pm 
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Thanks Cubs2jets, they are the ones I was referring to, I was thinking it may of been like a marketing thing making them look faster than the competition but your idea is more likely.


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