Kevin,
Would it be possible for you to send me a sample of the spar? I would love to see it and test it.
-Kang
--- In Indoor_Construction_at_yahoogroups.com, Kevin Lamers <kevin.lamers@...> wrote:
>
> Hi Kang,
>
> The carbon tubes (both the spar and hub) are made of IM carbon (T800)
> prepreg 17 gram/m2. The outline is made of UHM carbon (M60) roving.
> I have checked the individual weights and they are as follow:
>
> Blade (outline+ribs+balsa spar+covering): 0.074 gram
> Carbon spar (including aluminium bearing and actuator wire): 0.018 gram
> For 2 blades + spars: 0.184 gram
> Hub: 0.078 gram
> Total: 0.265 gram
>
> I now figure that I should half the length of the carbon spar and make the
> balsa spar a little longer, to save some weight (and make the outline
> thicker)
>
> I haven't had the change to fly it yet since I still have to build the rest
> of the model. I have made some F1D's a couple of years ago, in the mean
> time I was only doing F1B, and I figured it would be nice to give it a try
> again. So here I am ;-)
>
>
> Best wishes,
> Kevin
>
>
>
> 2013/3/5 Yuan Kang Lee <ykleetx_at_...>
>
> > **
> >
> >
> > Kevin,
> >
> > looks very nice. What materials are the spar and outline made from?
> >
> > Have you had a chance to fly it ?
> >
> > -Kang
> >
> >
> > --- In Indoor_Construction_at_yahoogroups.com, Kevin Lamers wrote:
> > >
> > > Hi Mike,
> > >
> > > I have to check tonight for the exact numbers, but by heart about:
> > > VP (just the centre, not the extended carbon tubes): 0.08 gram
> > > 2x blade + extended carbon tubes: 0.185 gram
> > >
> > > At least the total is 0.265 gram, see picture.
> > >
> > > Best regards,
> > > Kevin
> > >
> > >
> > >
> > >
> > > 2013/3/5 mkirda_at_
> > >
> > > > **
> >
> > > >
> > > >
> > > > Hi Keven.
> > > >
> > > > What does the hub weigh minus the prop spars/outlines?
> > > > And what does the entire prop weigh?
> > > >
> > > > The design is interesting to me mainly because I HATE tying kevlar
> > > > hinges... LOL.
> > > >
> > > > Regards.
> > > > Mike Kirda
> > > >
> > > >
> > > > --- In Indoor_Construction_at_yahoogroups.com, Kevin Lamers wrote:
> > > > >
> > > > > Here a carbon hub I'm working on currently. The main tube weighs 15mg
> > > > > including the bracket for the screws. The tube is 2mm ID and has a
> > 0.05mm
> > > > > wall thickness (2 layers 17 gsm prepreg).
> > > > > I hope the attachment gets through.
> > > > >
> > > > > Kevin
> > > > > Op 1 mrt. 2013 21:13 schreef het volgende:
> > > > >
> > > > > > **
> > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > I vote that you show all of us your unproven hub so we can all
> > pick it
> > > > > > apart before you perfect it.
> > > > > > On a personal note, all this talk of carbon, kevlar & fiberglass
> > has me
> > > > > > thoroughly confused. I need pictures.
> > > > > > Gary Hodson
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>
Received on Tue Mar 05 2013 - 10:46:27 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET