Re: Re: Prop Thrust Angles

From: LeRoy C Cordes <lcordes_at_juno.com>
Date: Mon, 11 Feb 2008 08:21:48 -0600

Thanks, Mark - guess I just need to go cut it and see what happens.

LeRoy Cordes
AMA 16974
Chicago, IL
In God We Trust

On Sun, 10 Feb 2008 18:07:01 -0000 "Mark" <f1diddler_at_yahoo.com> writes:
> --- In Indoor_Construction_at_yahoogroups.com, LeRoy C Cordes
> <lcordes_at_...> wrote:
> >
> > I am putting together Alan Cohen's MiniSlick and have a question.
>
> He
> > specifies 0 degrees downthrust and 3 degrees left thrust on the
> prop
> > hanger. How the devil do you guys manage something like 3 degrees
>
> left ?
> > The motor stick is 3/32" and about all I think I can do is to
> make
> a
> > slit at a shallow angle - How the devil do you manage any accuracy
>
> in
> > making these kinds of cuts ?
>
>
> The same way one manages angles with bigger models. Me, I stick a 3
>
> or 4 inch piece of very straight wire into the bearing so that it
> sticks out the front about three inches. Set this over a piece of
> paper having a drawn angle, 3* or whatever. Of course, align the
> lateral middle of bearing with the vertex of angle, and motorstick
> parallel with one of the angle legs. You can do all this before
> solidly gluing in the bearing, such as tack gluing, or in the case
> of
> solid motorstick, just friction sometimes works. For the prior
> slice
> into motorstick, you can take an "angled guess," see how it fits,
> adjust accordingly, and guess better next time.
>
> Similar method can be used for downthrust, provided you want to
> measure downthrust using motorstick datum, which may or may not be
> the effective downthrust. With wire pigtails and Harlan style
> bearing, further adjustments are possible in field (rather,
> on-floor)
> but getting pretty close in construction makes everyone happier.
> Mark F1diddler
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>



LeRoy Cordes
AMA 16974
Chicago, IL
In God We Trust
Received on Mon Feb 11 2008 - 06:47:33 CET