In article 'Foam Wing Cores', Ian Macaulay wrote:
IM> 10 Mar 97 22:50, Ace was yackin' to All and said:
IM>
IM> A> I use them on my electric glider and it flies great! Can also be
IM> A> cut in blue foam (even stronger!) Just add the spars
IM> A> leading/trailing edges, and cover with balsa or any of your
IM> A> favorite sheeting/film etc, and go!
IM>
IM> A> Jason.Pereira@phoenix.hexacom.com
IM>
IM>
IM> Jason, How did you make out with that switch? didja get it running? Are
IM> you on internet?
IM>
IM>
Hi Ian, I'm a little down today because my first electronic project
didn't work :( (BTW, sorry I didn't reply to you sooner, I had computer
trouble, but it's fixed now) I didn't build your switch yet because I'm
saving it for a C130 since I'll be using 4 mabuchi motors on it and that
means I need a switch that can handle the real juice, and according to the
specs on your switch it shure can handle power! :)
I've had the plans to the other switch for quite awhile now, and it
has the option of braking, which is something I really need on my gliders
since the prop windmills just after powering off, causing the plane to lose
altitude fast. Braking is the only way to insure that my prop folds back
exactly at power-off so I can keep that extra altitude which is really
important in a contest (so I hear. Been too chicken to enter one yet!)
Yup, braking is important. But you know, it's extremely easy to add
braking to any switch that uses a relay to turn on and off the motor. You
just have to make sure the relay is one of those SPDT types and that the
contacts can handle the amps. But the switch you sent me doesn't use a relay,
so there's no way that I can add a relay to it, that's why I'm saving it for
a plane that doesn't need braking, like the Hercules, where the motors must
be "on" during the whole flight.
BTW, I really appreciate you sending me the board along with the text,
it's really going to make it easier for me to build it :))
So I finished bulding the other darned switch yesterday, and here it
lies motionless before me, the sledge hammer close at hand. I had gone out,
all cheerfull and full of energy, to various electronic shops (some very far
away!) to get all the components I needed (reminding myself all along that I
had never done this before, and yet I still expected to make no mistakes!
Puh!) It was from a british magazine, and one of the parts was hard to find:
Transistor #ZTX751, which can only be found in London England, and I had made
a few calls there to see if one could be sent here. No luck. Finally, after
calling around, one of the shops told me that it can be replaced with the
ECG159 Transistor. So that very same morningI went out and baught a few, as
well as a few of all the other parts.
Sorry ran out of time. COn't next day.
Seya soon.
Jason P.
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