I like it. It makes sense to go to a shorter and stronger motor stick for Cat I (and may be higher, too). I'm glad to see that someone is trying it.
--- In Indoor_Construction_at_yahoogroups.com, joshuawfinn@... wrote:
>
> 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 - 08:26:27 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET