[NSRCA-discussion] Retracts?

Astropattern astropattern at yahoo.com
Sat Dec 8 17:22:27 AKST 2012


Also because as the engines/motors evolved more power, the props got longer and the need for longer ground clearance was going beyond what single-wire retracts could handle.

John

Sent from my iPad

On Dec 8, 2012, at 7:32 PM, "Dave Harmon" <k6xyz at sbcglobal.net> wrote:

> ….and weight.
>  
> Dave Harmon
> NSRCA 586
> K6XYZ[at]sbcglobal[dot]net
> Sperry, Ok.
>  
> From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of PhilS.
> Sent: Saturday, December 08, 2012 7:10 PM
> To: Mark Aulfinger; General pattern discussion
> Subject: Re: [NSRCA-discussion] Retracts?
>  
> I think it has to do with the new style of flying -- slower, and especially trying to keep the down lines no faster than the horizontal lines.  Dirty airframes provide more drag.  Also, no retracts leads to less mechanical complexity, and one less point of failure.  But, I think the drag thingy is the main point...
> 
> Phil Spelt, KCRC President
> AMA 1294 Scientific Leader Member
> SPA 177 Board Member
> (865)435-1476v, (865)604-0541c
> 
> On 12/8/2012 7:41 PM, Mark Aulfinger wrote:
> Hi All,
> 
> Long time lurker on this message board. Wanted to ask why modern pattern planes don't have retracts? There's
> no doubt a good reason that no one uses them anymore. Just curious why...I like the looks of a plane with the
> gear tucked away. 
> 
> Thanks in advance for any replies,
> Mark
> 
>  
>  
>  
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