My motorsticks are short (9"), and quite stout (.015"), made from old Micro-X wood I was given. The sheets claim they are 6 lb density but give every impression of being harder than that. There's a .019 sheet in the stack that is a bunch lighter than all of my .015 sheets, yet is graded as being the same weight.
So yeah, my motorsticks are armor plated. The front wing post has to be pretty strong, too, because I've had those twist themselves up pretty good, too. I typically aim for 370-380 mg for a finished stick with 3-4" stub.
-Joshua Finn
--- In Indoor_Construction_at_yahoogroups.com, Nick Ray wrote:
>
> There is no boron on his motor stick either.
>
> On Tue, Feb 12, 2013 at 9:13 PM, Yuan Kang Lee wrote:
>
> > **
> >
> >
> > Please raise your hand if you have launched a F1D at 0.70 in-oz or higher
> > ...
> >
> > If this were my model, it would crumple up into a ball! I think this
> > speaks well of Josh's model and his building skills.
> >
> > Are you sure your torque meter is calibrated ;-) ?
> >
> >
> > --- In Indoor_Construction_at_yahoogroups.com, joshuawfinn@ wrote:
> > >
> > >
> > >
> > > --- In Indoor_Construction_at_yahoogroups.com, "mkirda@" wrote:
> > > >
> > > > Hi Joshua.
> > > >
> > > > Is the .7 in-oz number correct? What size rubber are you using? Seems
> > incredibly high for F1D.
> > > >
> > > > 23 minutes in that space is great. I assume a lot of bumping goes on.
> > > >
> > > > Regards.
> > > > Mike Kirda
> > > >
> > >
> > > Mike,
> > >
> > > Yeah, I calibrated my torque meter a while back and discovered that I
> > was using much higher torque settings in Cat I than I'd realized.
> > >
> > > On the 23 minute flight, there was one bump about 3 minutes in, and a
> > good bit more bumping starting around 12 minutes. Around 18 minutes, the
> > model got out of reach of my steering pole, and while I Nick was bringing
> > me his, the model hit the side of the "slot" and slid down from around 30'
> > to the level of the rest of the ceiling, which is about 22'. I was able to
> > catch it with the pole to keep really bad things from happening, but that
> > much altitude loss really hurts the stopwatch. Unfortunately, that was the
> > first and last time that session that I was able to get above 18' on the
> > second climb because I couldn't get the model to start its second climb
> > until after 10 minutes, which is waaay too late with the setup I'm using.
> > Still worse, I found out later on that the hub bearing is getting sloppy,
> > allowing the prop to drop to a lower than intended pitch around 19-20
> > minutes, which really damages efficiency.
> > >
> > > -Joshua Finn
> > >
> > > Good flying,
> > > Joshua Finn
> > >
> >
> >
> >
>
Received on Wed Feb 13 2013 - 07:57:42 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET