[NSRCA-discussion] 4.8 volt Vs 6.0 volt -now nostalgia

Sat Mar 11 11:39:36 AKST 2006

Dwayne

I also looked at phototransistor options in the 80's before soft mounts, and 
servos with multiple pot wipers, ball bearings, etc. There were also early 
servos with variable caps in the R-C circuit. Now various shaft encoders are 
attractive, but all the alternates tend to suffer high power consumption, 
high weight, large size, and/or high cost. Hard to beat a $0.50 pot if 
you're a manufacturer. Of course the other option is to eliminate the 
vibration that eats pots - Merle Hyde did us all a huge service with his 
mounts - E power will pretty much allow us to forget the pots are there.

Earl
----- Original Message ----- 
From: "dwaynenancy" <dwaynenancy at cox.net>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Saturday, March 11, 2006 11:40 AM
Subject: Re: [NSRCA-discussion] 4.8 volt Vs 6.0 volt -now nostalgia

> There are ways.  Sent Kraft a prototype using a phototransistor in the
> late '70's.  Dwayne
>
> Earl Haury wrote:
>
>>I flew escapements in the 50's (the price of reed stuff drove me away).
>>While campaigning an A/FX Hemi Dodge drag car at the AHRA Nats in Gary IN
>>around 1964 I watched as someone demonstrated aerobatic R/C flight during
>>intermission. I've never know who it was - but I recall the airplane being
>>low wing and actually doing AXIAL ROLLS! That left an impression that, 
>>after
>>drag racing and trap shooting, surfaced with getting back into R/C in 
>>1972 -
>>my "trainer" was a Joe Bridi Kaos so that I could do rolls. Fortunately, I
>>missed the relay / travel stop actuators and flew the thing with a 
>>Heathkit
>>8ch radio and KPS12 equiv servos - amazing how much better I found the
>>Proline / KPS15 system when I started competing in '74 with a Norm Page 
>>Mach
>>1. Been hooked ever since and still waiting for servo pots to go away.
>>
>>Earl
>>
>>
>>----- Original Message ----- 
>>From: "J.Oddino" <joddino at socal.rr.com>
>>To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>>Sent: Saturday, March 11, 2006 10:56 AM
>>Subject: Re: [NSRCA-discussion] 4.8 volt Vs 6.0 volt
>>
>>
>>
>>
>>>I don't see how anyone can call me old.  I've been 29 for as long as I 
>>>can
>>>remember.  I'm 29 to the 1.274 power now and since I got my new knees I
>>>really feel young.  I went to the gym this week (four weeks after 
>>>surgery)
>>>and did 1.6 miles in half an hour on the treadmill and made 65 free 
>>>throws
>>>in a row.  Wait til I get my hook shot back.  None of these young guys
>>>have
>>>hook shots so they don't know what to do when they get the ball under the
>>>hoop.  The usual result is a blocked shot.
>>>
>>>I hate to admit this, but I remember when servos didn't have numbers.  In
>>>fact I remember when model airplane servos weren't really servos.  They
>>>were
>>>actuators with limit switches and neutralizing switches and driven by
>>>relays
>>>in the receiver.  Then Bonner/Elliott put transistors in the "servo" to
>>>get
>>>rid of the relays in the receiver.  I'm not sure who gets the credit for
>>>having the first commercially available proportional servos but I 
>>>remember
>>>giving up building my own and buying some Space Control servos in 1961.
>>>What is most interesting is the fact modern servos work basically the 
>>>same
>>>as the so called "digital servos" introduced by Mathes and Spreng in 
>>>about
>>>1963 in their Digicon system.  I think this was before Bob Richards was
>>>born.
>>>
>>>Jim O
>>>
>>>
>>>----- Original Message ----- 
>>>From: "Jerry Budd" <jerry at buddengineering.com>
>>>To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>>>Sent: Thursday, March 09, 2006 7:26 PM
>>>Subject: Re: [NSRCA-discussion] 4.8 volt Vs 6.0 volt
>>>
>>>
>>>
>>>
>>>>>OK.  That settles it.  Jim Oddino is just as old as me and I expect
>>>>>he will be offended that you call people our age old.  He lives out
>>>>>there on the left coast and he will probably find you, wherever you
>>>>>hide, and punish you.  Right Jim?
>>>>>
>>>>>
>>>>Yeah, but he's [Bionic] and likely to last forever.  Besides, he
>>>>shoots free throws better than I do.
>>>>
>>>>
>>>>
>>>>> > Sheesh!  Single digit servo numbers?  How <retro>.
>>>>>
>>>>>Single digit servo numbers?  12 is a single digit?  What public
>>>>>school did you graduate from, sonny?
>>>>>
>>>>>
>>>>Umm, umm (too embarassed to think of a comeback...!).
>>>>
>>>>
>>>>
>>>>> > Next you're going to tell us how CA bottles used to be sealed with
>>>>>
>>>>>
>>>>>> wax!
>>>>>>
>>>>>>
>>>>>CA?  What's that?  The only things I can remember that were sealed
>>>>>with wax were the receiver IF transformers and the little bottles of
>>>>>sweet water you got from the grocery store.
>>>>>
>>>>>
>>>>Don't you use wax to hold your false teeth in place?  ;-)
>>>>
>>>>Jerry
>>>>-- 
>>>>___________
>>>>Jerry Budd
>>>>Budd Engineering
>>>>(661) 722-5669 Voice/Fax
>>>>(661) 435-0358 Cell Phone
>>>>mailto:jerry at buddengineering.com
>>>>http://www.buddengineering.com
>>>>_______________________________________________
>>>>NSRCA-discussion mailing list
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>>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>
>>>>
>>>>-- 
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>>>>
>>>>
>>>>
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>>>
>>
>>
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