AeroElectric-List Digest Archive

Fri 09/03/04


Total Messages Posted: 19



Today's Message Index:
----------------------
 
     1. 12:31 AM - Re: Re: Cleveland Crimp Tool Mystery Solved . . . (Werner Schneider)
     2. 05:51 AM - Re: Re: Cleveland Crimp Tool Mystery Solved . . . (Paul McAllister)
     3. 06:06 AM - Resistor values for LEDs (Wayne Williams)
     4. 06:10 AM - Re: Re: Cleveland Crimp Tool Mystery Solved (Robert L. Nuckolls, III)
     5. 06:15 AM - Re: Re: Cleveland Crimp Tool Mystery Solved (Robert L. Nuckolls, III)
     6. 06:56 AM - Re: Resistor values for LEDs (Brian Lloyd)
     7. 06:56 AM - Re: Resistor values for LEDs (Brian Lloyd)
     8. 06:59 AM - Re: Re: Cleveland Crimp Tool Mystery Solved .//NOT . (Paul Messinger)
     9. 07:30 AM - Re: Resistor values for LEDs (SportAV8R@aol.com)
    10. 07:48 AM - Re: Re: Cleveland Crimp Tool Mystery Solved . . . (John Schroeder)
    11. 07:57 AM - Re: Resistor values for LEDs (Kent Ashton)
    12. 08:20 AM - Re: Resistor values for LEDs (John Schroeder)
    13. 08:22 AM - Re: Resistor values for LEDs (Fiveonepw@aol.com)
    14. 10:08 AM - Re: Resistor values for LEDs (echristley@nc.rr.com)
    15. 02:02 PM - Crimping 22awg PIDG Terminal Mystery (DAVID REEL)
    16. 06:30 PM - Re: Resistor values for LEDs (Robert L. Nuckolls, III)
    17. 07:17 PM - Re: Crimping 22awg PIDG Terminal Mystery (David Carter)
    18. 10:06 PM - 28 Volt (Speedy11@aol.com)
    19. 10:36 PM - 28 Volt (Speedy11@aol.com)
 
 
 


Message 1


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    Time: 12:31:08 AM PST US
    From: "Werner Schneider" <wernerschneider@compuserve.com>
    Subject: Re: Cleveland Crimp Tool Mystery Solved . . .
    --> AeroElectric-List message posted by: "Werner Schneider" <wernerschneider@compuserve.com> Hello Tony, I have also the B&C crimpers worked fine with their fastons, I used several kind of d-sub pins and had also excellent results (all crimps still ok) and did replace all my soldered d-subs with crimped (had a broken wire on the encoder). Werner ----- Original Message ----- From: "Tony Babb" <tonybabb@alejandra.net> Subject: Re: AeroElectric-List: Re: Cleveland Crimp Tool Mystery Solved . . . > --> AeroElectric-List message posted by: "Tony Babb" <tonybabb@alejandra.net> > > Bob et al, > > <snip> > > . It's not difficult if you take time to understand > > what's needed. > > > > Bob . . . > > > Is there a list of known good tool/terminal/wire combinations based on the > 'lectric listers experience? Not that I'm looking for guarantees ... but > would save me and others following from reinventing the same wheel you all > invented before. For example if I bought the B&C ratchet crimpers - all > three - are there known terminals/wire types they work well with/ or not so > well with. > > Of course we're always looking for good deals but in this case I don't mind > paying extra for a tool that will likely produce better connections for the > 'lectrically challenged such as me. > > .Thanks as always. > > Tony > >


    Message 2


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    Time: 05:51:12 AM PST US
    From: "Paul McAllister" <paul.mcallister@qia.net>
    Subject: Re: Cleveland Crimp Tool Mystery Solved . . .
    --> AeroElectric-List message posted by: "Paul McAllister" <paul.mcallister@qia.net> Tony, I purchased my crimper and fastons from B&C and they worked perfectly together. The same for the D sub pins and tool they sell. I did purchase a cheaper tool from Radio Shack to do the BNC's ($15.00) and it worked fine with the BNCs I purchased from B&C as well Paul


    Message 3


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    Time: 06:06:14 AM PST US
    From: "Wayne Williams" <rwayne@gamewood.net>
    Subject: Resistor values for LEDs
    --> AeroElectric-List message posted by: "Wayne Williams" <rwayne@gamewood.net> Can someone tell me how to calculate the resistor value to go in series with an LED in my 12VDC system. Thanks! Wayne


    Message 4


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    Time: 06:10:36 AM PST US
    From: "Robert L. Nuckolls, III" <b.nuckolls@cox.net> . . .
    Subject: Re: Cleveland Crimp Tool Mystery Solved
    . . . --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net> . . . At 08:14 PM 9/2/2004 -0700, you wrote: >--> AeroElectric-List message posted by: "Tony Babb" <tonybabb@alejandra.net> > >Bob et al, > ><snip> > > . It's not difficult if you take time to understand > > what's needed. > > > > Bob . . . > > > Is there a list of known good tool/terminal/wire combinations based on the >'lectric listers experience? Not that I'm looking for guarantees ... but >would save me and others following from reinventing the same wheel you all >invented before. For example if I bought the B&C ratchet crimpers - all >three - are there known terminals/wire types they work well with/ or not so >well with. Sure . . . the one's that B&C sells. The tool and terminal inventory is (or at least was when I sold them the business) based on my selection of tools and terminals that I tested to prove compatibility with the tools. I would hope that ALL merchants who offer interdependent products would be similarly diligent in testing their compatibility. As for any "list" . . . not that I know of. For the most part if you purchase tools and materials from common sources like AMP, Waldom/Molex, etc. you are assured of compatibility. >Of course we're always looking for good deals but in this case I don't mind >paying extra for a tool that will likely produce better connections for the >'lectrically challenged such as me. No need to pay "extra" . . . the combination of tools and components I compiled, sold and ultimately transferred to B&C were selected for their value and low price attractiveness. However, there's no substitute for getting educated enough to do your own evaluations for compatibility . . . there's probably a half dozen articles on tools and terminals on my website alone. If you have the time and inclination to save money by doing a lot of research on the lower cost offerings, that's great. However, I'll suggest that the best values are those where the research has been done by one to the benefit of many as opposed to lots of folks doing their own research to the same end. It seems that we're still not fully informed as to the compatibility of the Cleveland tool . . . I tested it with AMP PIDG terminals and found it incompatible. I guess there are samples of other terminals coming that purport to fill in the gaps. We'll see and report findings here. There's nothing that outperforms the repeatable experiment for clearing away the fog. In the mean time, if you need to purchase tools and materials at attractive prices to move YOUR project along, I can vouch for the collection offered by htp://bandc.biz Perhaps in a week or so we can offer similar confirmation for Cleveland's offerings. Bob . . . ---


    Message 5


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    Time: 06:15:22 AM PST US
    From: "Robert L. Nuckolls, III" <b.nuckolls@cox.net> . . .
    Subject: Re: Cleveland Crimp Tool Mystery Solved
    . . . --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net> . . . At 09:30 AM 9/3/2004 +0200, you wrote: >--> AeroElectric-List message posted by: "Werner Schneider" ><wernerschneider@compuserve.com> > >Hello Tony, > >I have also the B&C crimpers worked fine with their fastons, I used several >kind of d-sub pins and had also excellent results (all crimps still ok) and >did replace all my soldered d-subs with crimped (had a broken wire on the >encoder). > >Werner Most people are not aware of it . . . but the d-sub crimp tool they offer is available from lots of other sources in the wild . . . but I determined early-on that the tool places the crimp in the wrong place on the pin. All the tools we sold and now sold at B&C have the pin-positioners cut down on a lathe to correct this deficiency. This is an example of the efforts put forth (by some suppliers least) to elevate the value of products and services offered. Most folks who sell that tool don't have a clue. Bob . . . ---


    Message 6


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    Time: 06:56:14 AM PST US
    From: Brian Lloyd <brianl@lloyd.com>
    Subject: Re: Resistor values for LEDs
    --> AeroElectric-List message posted by: Brian Lloyd <brianl@lloyd.com> On Sep 3, 2004, at 9:08 AM, Wayne Williams wrote: > --> AeroElectric-List message posted by: "Wayne Williams" > <rwayne@gamewood.net> > > Can someone tell me how to calculate the resistor value to go in > series with > an LED in my 12VDC system. First you need to know three things: 1. the voltage drop across the LED at your operating current (I will call this Vdl); 2. the operating current for the LED (I will call this Il); 3. the source voltage (Vs). The high-brightness LEDs have different voltage drops depending on the color of the LED. Red LEDs usually have a drop of about 1.5V. For the sake of argument I will pick 20mA as the proper operating current. Resistance = Volts/Amps (good old ohms law). So the formula you want is: R = (Vs - Vdl) / Il For your example and using the values above, the calculation is: R = (14V - 1.5V) / .020 A R = 625 ohms. > Thanks! > > Wayne > > > _- > ======================================================================= > _- > ======================================================================= > _- > ======================================================================= > _- > ======================================================================= > > > > Brian Lloyd 6501 Red Hook Plaza brianl@lloyd.com Suite 201 +1.340.998.9447 St. Thomas, VI 00802


    Message 7


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    Time: 06:56:14 AM PST US
    From: Brian Lloyd <brianl@lloyd.com>
    Subject: Re: Resistor values for LEDs
    --> AeroElectric-List message posted by: Brian Lloyd <brianl@lloyd.com> On Sep 3, 2004, at 9:08 AM, Wayne Williams wrote: > --> AeroElectric-List message posted by: "Wayne Williams" > <rwayne@gamewood.net> > > Can someone tell me how to calculate the resistor value to go in > series with > an LED in my 12VDC system. First you need to know three things: 1. the voltage drop across the LED at your operating current (I will call this Vdl); 2. the operating current for the LED (I will call this Il); 3. the source voltage (Vs). The high-brightness LEDs have different voltage drops depending on the color of the LED. Red LEDs usually have a drop of about 1.5V. For the sake of argument I will pick 20mA as the proper operating current. Resistance = Volts/Amps (good old ohms law). So the formula you want is: R = (Vs - Vdl) / Il For your example and using the values above, the calculation is: R = (14V - 1.5V) / .020 A R = 625 ohms. Brian Lloyd 6501 Red Hook Plaza brianl@lloyd.com Suite 201 +1.340.998.9447 St. Thomas, VI 00802


    Message 8


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    Time: 06:59:58 AM PST US
    From: "Paul Messinger" <paulm@olypen.com>
    Subject: Re: Cleveland Crimp Tool Mystery Solved .//NOT
    . --> AeroElectric-List message posted by: "Paul Messinger" <paulm@olypen.com> ----- Original Message ----- From: "Robert L. Nuckolls, III" <b.nuckolls@cox.net> Subject: AeroElectric-List: Re: Cleveland Crimp Tool Mystery Solved . . . snip>>Unlike the tools B&C sells with symmetrical dies, >>>> Bob, I simply do not understand how the above symetrical die tool will properly crimp a terminal. Sure it can crimp the conductor to the needed gas tight crimp. However the insulation grip REQUIRES a different shape die to properly crimp the insulation with the metal sleeve that is a part of the PIDG terminal. The need is to crimp the sleeve on both sides of the wire with minimal crimping on top of the wire. After this thread started I went and looked again at my various crimpers. I have crimpers designed for the vinyl insulation terminals commonly sold in auto stores as well as AMP crimpers designed for PIDG terminals. Both types work well on the terminals they were designed for. ALL have different die shapes for the two parts of the crimp. Insulation support is part of the terminal design and a proper insulation crimp is needed in my opinion (as well as the industry it seems). Simply looking at the result of a proper crimp shows the inner metal sleeve of the terminal nicely shaped around the wire insulation without insulation distortion and nearly 360 degree support. The excess material results in a end view much like a round fush acft with mid stubby wings =O=. Proper insulation support on the wire side of the crimp is critical to wire to terminal long term resistance to failure. Paul


    Message 9


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    Time: 07:30:13 AM PST US
    From: SportAV8R@aol.com
    Subject: Re: Resistor values for LEDs
    --> AeroElectric-List message posted by: SportAV8R@aol.com Wayne, there's also the empiric method, wher you connect a power supply or battery in series with a sample LED and digital multimeter, and place various resistors in series, starting with about 1k ohm and going lower in steps: 750, 680, 560, 470, 330, 220 until you achieve the brightness you want, or the listed maximum current, or (for fun and education) until the LED gets real bright and then pops. This will satisfy you that the LED is of a comfortable, useful brightness and also (hopefully) within its rated current specs. I suggest this experiment be done in a darkened workshop as well as in daylight, to see how you like it in both conditions. You may want to include a dimmer, which is a whole other subject... -Stormy


    Message 10


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    Time: 07:48:41 AM PST US
    Subject: Re: Cleveland Crimp Tool Mystery Solved . . .
    From: "John Schroeder" <jschroeder@perigee.net>
    --> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net> Tony - We haven't even started to wire the airplane yet, but here is my experience on tools and wiring thus far. I finally bought the Ideal Stripmaster with the dies that Bob recommends. A guy on the Lancair list bought several sets for a very good price and passed the savings on to those of us lucky enough to catch his email and react!! Two previous strippers are nowhere near it in quality and ease of use. It is easily worth the money to get consistent, fast strips on tefzel. If it does tefzel, it can do anything! I bought the DSub crimper for machined pins from B&C. It works beautifully. I bought a frame and dies (4100 series) for PIDG terminals & RG58 coax from Sargent. They were on a closeout sale at RC and are very good. However, when I ordered a set of dies from them, via Mouser, for open barrel terminals, the order was so goofed up that I cancelled and bought a Palladin frame (Series 1300) and two sets of dies for open barrels. The order was in March and delivery had still not occurred as of August 15th!!! From what I can see, the PIDG and RG58 dies from Palladin would be just as good as the Sargents. They certainly are much easier to swap dies in the frame. They also use the same dies for more than one series of frames. After lots of practice with all of the tools - including open barrel crimps on Molex Mini Fit Jr. pins to that miserable AWG 26 wire used on RC Allen trim servos, I concluded that open barrels are by far the most difficult. Bob's (B&C) tool and comic book piece on how to use it is a good way to go. It is time consuming, but making two separate crimps saves you crimps that are not placed in the dies correctly or wire inserted improperly because you cannot see where it is in the terminal. The dies tend to cover up the area. To do the Molex terminals, I literally had to use a jewellers loop to set the pin in the tool, to strip the wire and insert it into the pin for crimping. Furthermore, I had to cut off part of the insulation "ears" to keep the crimper from mashing the insulation into the wire and cutting it! By comparison, the machined pins/Dsub combo is vastly easier to do. I hope to standardize on Dsubs as much as I can and also on AMP CPC Type II's because they use the machined pins. Unfortunately, Dsubs don't come in any decent array of sizes and the CPC's do, but they are a lot more expensive and a bit long. To fill the gap, we will use the Molex Minifit Jr's for the remainder of the connectors. The pins can carry up to 9 amps and that covers 90 percent of the requirements. They also have locking tabs that are good to have. The older .062 and .093 molex connectors are ubiquitous and cheap, but this newer line is better (IMHO). I'll practice a bit more with the Palladin frame and dies. It looks like life will be a lot easier with them when we can get to the AWG 22 wire down stream of the trim of the RC Allen servos, indicators and switches! AWG 22 really should be the absolute minimum size for wiring. We keep learning over and over that life is too short, aggravating and senseless to spend it trying to make cheap tools or the wrong type tool work on something in the airplane. BTW, buy at least a dozen extra pins of each size for practice and a jewellers loop with a good bench light to examine your work. Bob - How's this for a good ad for your long experience and advice? Cheers, John


    Message 11


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    Time: 07:57:38 AM PST US
    Subject: Re: Resistor values for LEDs
    From: Kent Ashton <kjashton@vnet.net>
    --> AeroElectric-List message posted by: Kent Ashton <kjashton@vnet.net> Radio Shack has a little booklet on Opto-Electronics with an explanation of LEDs and the resistor formulas. Good simple reference book. --Kent > From: "Wayne Williams" <rwayne@gamewood.net> > Reply-To: aeroelectric-list@matronics.com > Date: Fri, 3 Sep 2004 09:08:47 -0400 > To: <aeroelectric-list@matronics.com> > Subject: AeroElectric-List: Resistor values for LEDs > > --> AeroElectric-List message posted by: "Wayne Williams" > <rwayne@gamewood.net> > > Can someone tell me how to calculate the resistor value to go in series with > an LED in my 12VDC system. > Thanks! > > Wayne > > > > > >


    Message 12


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    Time: 08:20:37 AM PST US
    Subject: Re: Resistor values for LEDs
    From: "John Schroeder" <jschroeder@perigee.net>
    --> AeroElectric-List message posted by: "John Schroeder" <jschroeder@perigee.net> Try this web site. It is a tutorial and calculator! http://ourworld.compuserve.com/homepages/Bill_Bowden/led.htm John >> Can someone tell me how to calculate the resistor value to go in series >> with an LED in my 12VDC system. >> Thanks! >> >> Wayne


    Message 13


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    Time: 08:22:28 AM PST US
    From: Fiveonepw@aol.com
    Subject: Re: Resistor values for LEDs
    --> AeroElectric-List message posted by: Fiveonepw@aol.com In a message dated 9/3/04 8:06:45 AM Central Daylight Time, rwayne@gamewood.net writes: > Can someone tell me how to calculate the resistor value to go in series > with > an LED in my 12VDC system. >>>>>> Hi Wayne- If you can do excel, I've got a spreadsheet for multiple types & number of LEDs in series- let me know... From The PossumWorks in TN Mark do not archive


    Message 14


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    Time: 10:08:06 AM PST US
    From: echristley@nc.rr.com
    Subject: Re: Resistor values for LEDs
    --> AeroElectric-List message posted by: echristley@nc.rr.com ----- Original Message ----- From: SportAV8R@aol.com Subject: Re: AeroElectric-List: Resistor values for LEDs > --> AeroElectric-List message posted by: SportAV8R@aol.com > > Wayne, there's also the empiric method, wher you connect a power > supply or battery in series with a sample LED and digital > multimeter, and place various resistors in series, starting with > about 1k ohm and going lower in steps: 750, 680, 560, 470, 330, 220 > until you achieve the brightness you want, or the listed maximum > current, or (for fun and education) until the LED gets real bright > and then pops. This will satisfy you that the LED is of a > comfortable, useful brightness and also (hopefully) within its > rated current specs. I suggest this experiment be done in a > darkened workshop as well as in daylight, to see how you like it in > both conditions. You may want to include a dimmer, which is a > whole other subject... > > -Stormy > You'll also want to know that the LED will be somewhat useful when the electron pump goes away on you're on the tail end of battery operation. Either use Brian's method to calculate that the current can turn the LED on with the chosen resistor and only 11 volts, OR turn the power supply down to get down to 11 volts. Most spec sheets will give a max, min and typical current rating. Keeping the current just below the typical current rating of a half decent LED will almost guarantee that it will last longer than your airframe.


    Message 15


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    Time: 02:02:23 PM PST US
    From: "DAVID REEL" <dreel@cox.net>
    Subject: Crimping 22awg PIDG Terminal Mystery
    --> AeroElectric-List message posted by: "DAVID REEL" <dreel@cox.net> I got the Cleveland WTC380 crimper back from Bob today & used a dial caliper to measure the minimum separation of the dies used for 22-18awg terminals. .097 inches. Then I measured the replacement from Cleveland. .088 inches. So I think Buzz at Cleveland was right & my problem was just an out-of-spec variation in the tool. I still can't figure out how Bob got a good crimp out of the .097 inch tool though. By the way, Ideal's 30-579 die separaton measured ,088. Still waiting to hear what Bob thinks of the grip on the insulation end from the sample I sent him though. Dave Reel - RV8A


    Message 16


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    Time: 06:30:45 PM PST US
    From: "Robert L. Nuckolls, III" <b.nuckolls@cox.net>
    Subject: Re: Resistor values for LEDs
    --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <b.nuckolls@cox.net> At 09:08 AM 9/3/2004 -0400, you wrote: >--> AeroElectric-List message posted by: "Wayne Williams" ><rwayne@gamewood.net> > >Can someone tell me how to calculate the resistor value to go in series with >an LED in my 12VDC system. >Thanks! > >Wayne See: http://www.aeroelectric.com/articles/leds3.pdf Bob . . . ---


    Message 17


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    Time: 07:17:16 PM PST US
    From: "David Carter" <dcarter@datarecall.net>
    Subject: Re: Crimping 22awg PIDG Terminal Mystery
    --> AeroElectric-List message posted by: "David Carter" <dcarter@datarecall.net> Good info - thanks. Something that can be checked "ahead of time" to see where a crimping die lies relative to sizes known to work with certain terminals. Do not archive David ----- Original Message ----- From: "DAVID REEL" <dreel@cox.net> Subject: AeroElectric-List: Crimping 22awg PIDG Terminal Mystery > --> AeroElectric-List message posted by: "DAVID REEL" <dreel@cox.net> > > I got the Cleveland WTC380 crimper back from Bob today & used a dial caliper to measure the minimum separation of the dies used for 22-18awg terminals. .097 inches. Then I measured the replacement from Cleveland. .088 inches. So I think Buzz at Cleveland was right & my problem was just an out-of-spec variation in the tool. I still can't figure out how Bob got a good crimp out of the .097 inch tool though. By the way, Ideal's 30-579 die separaton measured ,088. Still waiting to hear what Bob thinks of the grip on the insulation end from the sample I sent him though. > > Dave Reel - RV8A > >


    Message 18


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    Time: 10:06:01 PM PST US
    From: Speedy11@aol.com
    Subject: 28 Volt
    --> AeroElectric-List message posted by: Speedy11@aol.com I'm considering using a 28 volt electrical system in my RV-8 with one alternator and two batteries. What are your thoughts on that? Are there drawbacks to using 28 volt? Stan Sutterfield Tampa RV-8A 25%


    Message 19


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    Time: 10:36:53 PM PST US
    From: Speedy11@aol.com
    Subject: 28 Volt
    --> AeroElectric-List message posted by: Speedy11@aol.com Forget my question. I should have researched the archives before asking. Stan Sutterfield Tampa RV-8A




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