AeroElectric-List Digest Archive

Mon 04/17/17


Total Messages Posted: 3



Today's Message Index:
----------------------
 
     1. 11:31 AM - Re: old B and C SD-8 Dynamo failure (Robert L. Nuckolls, III)
     2. 03:37 PM - Re: old B and C SD-8 Dynamo failure (Robert L. Nuckolls, III)
     3. 07:49 PM - Re: Off Topic: Amazon tip for the charitable among us (Rick Beebe)
 
 
 


Message 1


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    Time: 11:31:39 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: old B and C SD-8 Dynamo failure
    Got Mark's SD-8 and original stock R/R running on the bench. The R/R seems to be fine too. I initially used a LiFePO4 battery (ETX36) in the test setup and observed some unexpected behaviors. Got a small lead-acid from the store a few minutes ago and put it on a maintainer. Will resume the experiment when the battery tops off . . . Bob . . .


    Message 2


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    Time: 03:37:21 PM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Re: old B and C SD-8 Dynamo failure
    >Bob, if you wanted to look at this dynamo for some reason, I'll be happy >to mail it to you. I suspect you've got much better things to do than >'paleo-forensics' on this dated item. I've finished some preliminary operations on the as received SD8 and companion R/R. They seem to function pretty much as designed. 2800 RPM produces 3+ amps at 14.4v 3300 RPM produces 4+ amps at 14.3v 3800 RPM produces 8+ amps at 14.1v At the final load setting, current in the SD8 windings was 10.5 A(rms) I can return this hardware if you'd like to have it around for spares. At the same time, it would be interesting/useful to add it to the constellation of test tools I'm building around a 2HP drive-stand with and AND20000 spline pad on it. Emacs! As an interesting aside, test data were taken without a battery on line . . . this prevented pollution of current values dialed into the dynamic load bank. I was able to 'tickle' the dynamo-r/r into operation with a momentary application of battery power. On one fire-up/shut-down cycle, the capacitor was still charged to about 3 volts and the system came on-line with only a small fraction of start up excitation offered by the ship's battery. Bob . . .


    Message 3


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    Time: 07:49:47 PM PST US
    Subject: Re: Off Topic: Amazon tip for the charitable among
    us
    From: Rick Beebe <rick@beebe.org>
    If you go into "Accounts & Lists" and "Your Amazon Smile" you can choose your charity. I typed "Aviation" into the search box and got 861 results. Amazon claims there are almost a million charities in the system so if you can think of one, they're probably there. --Rick On 4/17/2017 12:02 AM, Richard Girard wrote: > Even the Soaring Society of America is on their list of organizations. > > Rick Girard > > On Sun, Apr 16, 2017 at 3:40 PM, Charlie England <ceengland7@gmail.com > <mailto:ceengland7@gmail.com>> wrote: > > <ceengland7@gmail.com <mailto:ceengland7@gmail.com>> > > The recent link to an Amazon-listed product made me thing about > this; a heads-up if you have charitable tendencies. Amazon has a > feature called 'smile' (just add 'smile.' between the slashes and > the word 'amazon' in the url.) If you sign up for it, your prices > stay the same, but Amazon will donate some small % of your purchase > price to the charity of your choosing, from a pretty large list of > charities & worthy causes.




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