Re: Re: Helicopter Design

From: Bill Carney <wcarneyjx_at_bellsouth.net>
Date: Mon, 7 Mar 2011 08:28:37 -0800 (PST)

Eric,
  Thanks for the info. The hang up sounds very typical. I'm thinkng about having
our kids ask if they can fly in the hallway outside the gym instead of
inside....Or maybe if the gym has some sort of foyer, anything with a flat
surface.

Bill




________________________________
From: Eric <ewmonda_at_hotmail.com>
To: Indoor_Construction_at_yahoogroups.com
Sent: Mon, March 7, 2011 11:12:44 AM
Subject: [Indoor_Construction] Re: Helicopter Design

 
Bill,
I was at the Southern Colorado regional in Colorado Springs. I didn't catch the
final results because we left in the mid-afternoon, but at that time, first
place got 2:19 on their first flight, but lost the ship on their second flight
on top of a light fixture. I did not get to see this design. Second place was
less than 20 seconds.
Eric Monda

--- In Indoor_Construction_at_yahoogroups.com, Bill Carney <wcarneyjx_at_...> wrote:
>
> I agree that winding a two  free rotor design is a two person operation. We
>wind
>
> ours on the chopper as we're not flying by torque but winding to max turns all

> the time. It takes a bit of practice but so far hasn't been any real concern.
>
> Eric,
>   Which regional did you attend Saturday? One of my helicopters won a regional
>
> in IL Saturday but I'm not sure which region. The report I got was that almost

> all the Helicopters got caught in the rafters including the winner.
>
> Bill C
>
>
>
>
> ________________________________
> From: Bill Gowen <wdgowen_at_...>
> To: Indoor_Construction_at_yahoogroups.com
> Sent: Mon, March 7, 2011 9:40:36 AM
> Subject: Re: [Indoor_Construction] Helicopter Design
>
>  
> Eric
> I designed a helicopter that my SO kid wound up not using. Originally I had
> bearings on both ends. It was a nightmare to get a wound motor on. If you were
>
> winding the motor on the helicopter and had 2 team members then it wouldn't be

> as difficult but that would mean you'd give up using a torque meter to wind.
>  
> Eventually I built a new motor stick with the lower rotor fixed. This cured the
>
> difficulty of loading the motor and didn't seem to make the copter fly any
> worse. If you have one person doing the winding and flying then I wouldn't even
>
> consider using 2 bearings.
>  
> ----- Original Message -----
> >From: Eric
> >To: Indoor_Construction_at_yahoogroups.com
> >Sent: Monday, March 07, 2011 7:17 AM
> >Subject: [Indoor_Construction] Helicopter Design
> >
> > 
> >Was watching some of the helicopter event at our SO regional on Saturday. Can

> >someone explain if there is a reason to let both rotors turn relative to the
> >motor stick versus keeping one rotor fixed to the stick? Seems like I've seen

> >successful designs both ways.
> >Thanks,
> >Eric Monda
> >
> >
>
Received on Mon Mar 07 2011 - 08:28:45 CET