Re: making a motor synch?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi David,

I am not sure the wa-wa-wa-wa sound is right.  That may be the motor 
slipping sync.  The files you seek are at:

http://hot-streamer-dot-com/TeslaCoils/Misc/syncmot.zip

You almost need a card the is half black and half white to see the 
sync.  Flourescent lights or pretty sluggish so you need a very clear 
pattern for it to show up.

Cheers,

         Terry


At 10:24 PM 5/31/2003 -0400, you wrote:
>Hi all,
>
>I decided to try to redo the ASRG of my big coil and try to
>go sync with the motor. I took the motor apart and ground
>2 flats on the rotor (3450 rpm) and then slapped it back to-
>gether. I tried the paint marks on the disc attached to the
>shaft (was one of the original RSG lexan disc). I turned it
>on under flourescent lights of my shop but could not spot
>the white paint marks on the disc. Did hear the motor mak-
>ing a wa-wa-wa-wa sound though. Does this mean that she
>is synching? The motor does seem to have less torque and
>also seems to get pretty warm to the touch with just a few
>minutes of operation like this. I know many have stated
>that it's really hard to get the strobe affect under flourescent
>lights. Also some have stated to just place a temporary
>cardboard disc on the shaft for strobing. Anyway, I was also
>planning on replacing the lexan discs and 3/8" brass allthread
>rotory electrodes w/ G-10 disc and 1/4" tungsten rotory elec-
>trodes. I will probably have to have the G-10 disc cut out by
>someone with good machining facilities as I certainly don't
>have that myself.
>
>I suppose that only 2 rotory electrodes is all that's needed
>on the rotory disc for 120 bps if I'm going to run synch. I
>may also have to redo the whole coil since the lower 120
>bps in synch will dictate a larger primary capacitor to be
>able to fully charge in each half cycle. Hey, this may turn
>out to be more of a project than I had originally planned :^0
>Of course I'll probably also have to build John Freau's phase
>controler to be able to get the SRSG to fire at the voltage
>peaks....
>
>I think Terry has printed some instructions for the synching
>procedure somewhere on hotstreamer, but I can't locate it...
>
>Thanks for any help,
>
>David Rieben
>
>