Tapio,
Your low pitch is too low. 420 mm pitch is 16."5". I don't think low pitch should go below 25 or 26".
Treger specifies 660 mm or 26".
-Kang
--- In Indoor_Construction_at_yahoogroups.com, Tapio Linkosalo <tapio.linkosalo@...> wrote:
>
> On 11.12.2012 22:50, mkirda_at_... wrote:
> > Can you estimate the angular difference between low and high pitch?
> > Maybe 20 degrees?
>
> Bottom pitch at 150mm radius 24 degrees = 420mm
> Top pitch 42 degrees = 850mm
> Angular difference in blades 18 degrees.
>
> Yoke diameter 5mm, actuating arm length 4.5mm -> change in the spring
> angle 5/4.5 * 18 degrees = 20 degrees (bingo!) Prop pitch starts to
> reduce at approximately 8 to 9 g*cm.
>
>
>
>
> -Tapio
>
Received on Wed Dec 12 2012 - 22:07:31 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET