AeroElectric-List Digest Archive

Sun 09/08/13


Total Messages Posted: 4



Today's Message Index:
----------------------
 
     1. 06:50 AM - Terminal ID? (donjohnston)
     2. 08:16 AM - Re: Terminal ID? (Kelly McMullen)
     3. 12:42 PM - De-Slumpifier, Voltage Buffer to Prevent Brownout (Eric M. Jones)
     4. 04:12 PM - Alternator Whine in Radio Transmit (Ron Lendon)
 
 
 


Message 1


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    Time: 06:50:30 AM PST US
    Subject: Terminal ID?
    From: "donjohnston" <don@velocity-xl.com>
    I'm hooking up the the CHT/EGT probes to my Grand Rapids EIS. I had a couple bad crimps on the male spade connectors but I didn't have enough spares. GR sent me some extras but they changed to a different style and those don't work in my AMP 47386-R crimping tool. I've poked around on Mouser, but all I can find are ring and butt splice. No luck on tabs. Any suggestions on a PN? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=408229#408229 Attachments: http://forums.matronics.com//files/569a_158.jpg


    Message 2


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    Time: 08:16:50 AM PST US
    From: Kelly McMullen <kellym@aviating.com>
    Subject: Re: Terminal ID?
    Probes do seem to have varying connectors. Those for EI probes have a bit of a bump in the middle but both male and female are fast-on fully insulated. On Dynon the insulation is rounder, and the male spades do not have insulation over the spade, just the crimp area. I have had some luck matching up what I needed for extras at either Radio Shack or Home Depot, just being careful to only select ones with translucent nylon insulation, not opaque vinyl. Haven't run into ones that don't use same crimp as any other ring or fast-on terminal. Seems odd that they would supply a connector that doesn't use a standard crimp. On 9/8/2013 6:49 AM, donjohnston wrote: > > I'm hooking up the the CHT/EGT probes to my Grand Rapids EIS. I had a couple bad crimps on the male spade connectors but I didn't have enough spares. GR sent me some extras but they changed to a different style and those don't work in my AMP 47386-R crimping tool. > > I've poked around on Mouser, but all I can find are ring and butt splice. No luck on tabs. > > Any suggestions on a PN? > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=408229#408229 > > > Attachments: > > http://forums.matronics.com//files/569a_158.jpg > >


    Message 3


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    Time: 12:42:37 PM PST US
    Subject: De-Slumpifier, Voltage Buffer to Prevent Brownout
    From: "Eric M. Jones" <emjones@charter.net>
    I built and tested the 12V De-Slumpifier and it behaves very well with no surprises. I don't have a publishable test protocol, but for general purposes this is a good design that can be used for many anti-slump applications. If there is sufficient interest, I will make a PCB and maybe a kit of parts. Note how much space remains inside the box. The 35W resistor and heatsink and one diode is under the perf board. I added an optional LED indicator. The supercaps behave almost exactly like a 250,000 uF/20V capacitor bank which used to fit into a suitcase. -------- Eric M. Jones www.PerihelionDesign.com 113 Brentwood Drive Southbridge, MA 01550 (508) 764-2072 emjones(at)charter.net Read this topic online here: http://forums.matronics.com/viewtopic.php?p=408239#408239 Attachments: http://forums.matronics.com//files/slumpless_12v_buffer_136.pdf http://forums.matronics.com//files/p1000038_899.jpg http://forums.matronics.com//files/p1000037_104.jpg


    Message 4


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    Time: 04:12:26 PM PST US
    Subject: Alternator Whine in Radio Transmit
    From: "Ron Lendon" <ron.lendon@gmail.com>
    Bob, I have the WW Corvair engine in a 601XLB and have 180 hours on it. I used your design with the JD alternator and replaced the voltage regulator/rectifier with the B&C unit "PMR1C-14". At about 170 hours the filter cap 10,000uF gave up and the ATC folks started to complain. I have replaced the Cap and now that I know about the whine I find I can switch off the alternator during transmit and it is as clear as a bell. With the alternator switched on it does have a whine that is tolerable, but it still has a whine. What steps can I take to eliminate the whine from the alternator and leave it switched on? Be gentle, I'm a metal worker not an electrician. -------- Ron Lendon, Detroit, MI WW Corvair with Roy's Garage 5th bearing CH 601 XLB N601LT - Flying http://www.mykitlog.com/rlendon Corvair Engine Prints: http://www.zenith.aero/profile/RonLendon Read this topic online here: http://forums.matronics.com/viewtopic.php?p=408242#408242




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