Tim,
That's exactly the problem, but the block is almost perfect. The
curve in the prop is actually the opposite direction of the slight
curve in the block and much larger. I'm pretty sure Steve is right-
the wood just wants to bend. I'm going to try with a different sheet.
Nicholas
--- In Indoor_Construction_at_yahoogroups.com, Timothy Chang <mitim3@...>
wrote:
>
> Im not sure if this is what ur talking about but are you saying that
your spars dont lay flat against the blades? If so, it means that the
sparline on the block isn't level, you outta check to see if its flat
with a ruler or straighedge.
>
> Tim
>
> Steve Brown <rtxc_at_...> wrote:
> If there is no glue involved then the only answer is the wood
> itself. If the spars are warped or take a set when bent and won't
> spring back then you'll need to make new spars from a different
> piece of wood.
>
> --- In Indoor_Construction_at_yahoogroups.com, "Nicholas"
> <ndhuang83706_at_> wrote:
> >
> > I'm sure it's not the glue- These blades have just come off the
> block.
> > I haven't attached them to the spars yet.
> > Nicholas
> > --- In Indoor_Construction_at_yahoogroups.com, "Steve Brown" <rtxc@>
> > wrote:
> > >
> > >
> > >
> > >
> > > --- In Indoor_Construction_at_yahoogroups.com, "Nicholas"
> > > <ndhuang83706_at_> wrote:
> > > >
> > > > Hi All,
> > > > I recently made a couple of props for my LPP, but when they
> finished
> > > > drying they were warped...
> > >
> > > Are you sure this isn't caused by glue shrinkage along the joint
> where
> > > the blade and spar meet? If you use much glue in this area you
> will
> > > get distortion of the spar and also may get excessive (and
> increasing)
> > > camber pulled into the "airfoil" of the blade.
> > >
> > > Try gluing the blades on with diluted white or aliphatic glue.
> > >
> >
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
Received on Sat Jul 01 2006 - 22:17:27 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:44 CET