Is there a relatively inert gas that has much higher thermal conductivity than air? Then a flask makes sense and is not the size of the basement...
Dick Moore On Sep 20, 2011, at 5:00 AM, time-nuts-requ...@febo.com wrote: > ------------------------------ > > Message: 2 > Date: Mon, 19 Sep 2011 18:21:30 -0700 > From: ed breya <e...@telight.com> > To: time-nuts@febo.com > Subject: [time-nuts] Making a HP 10811 better > Message-ID: <201109200121.p8k1lgse015...@mail30c40.carrierzone.com> > Content-Type: text/plain; charset="us-ascii"; format=flowed > > One last thing regarding oil-filling. My previous comment was made > picturing oil inside the oscillator block only - not outside, or > between the outer parts - if there is a resistance wire heater (I > think it's heated with Qs only on the 10811) it is held together with > various tapes and adhesives that could soften or dissolve. Also, the > insulation would not insulate very well of saturated with oil, and > could possibly soften or break down somehow. I would not recommend > dunking the whole thing in a vat of oil. > > And one final, final note: If oil is somehow effectively contained in > the oscillator block, then a void (bubble) of some sort, or an > expansion facility or vent would be needed to relieve the pressure > changes during warmup. Otherwise, when started up, the expanding oil > would have to either leak out, or deform (or damage) something. This > would be equivalent to dramatically increasing barometric pressure, > and certainly effect the oscillator frequency. > > Ed > > > > > ------------------------------ > > Message: 3 > Date: Mon, 19 Sep 2011 23:20:28 -0600 (MDT) > From: "Don Latham" <d...@montana.com> > To: "Discussion of precise time and frequency measurement" > <time-nuts@febo.com> > Subject: Re: [time-nuts] Making a HP 10811 better > Message-ID: > <d850d565aabe9422dd4172b9c904d5d4.squir...@webmail.montana.com> > Content-Type: text/plain;charset=iso-8859-1 > > Ah well. Just a thought. I was thinking of simply dumping the whole > thing into a picnic jug full of baby oil :-) > Sorta scatterbrained, but I have seen mentioned on the list a basement > sized steel block ... > Don > > ed breya >> One last thing regarding oil-filling. My previous comment was made >> picturing oil inside the oscillator block only - not outside, or >> between the outer parts - if there is a resistance wire heater (I >> think it's heated with Qs only on the 10811) it is held together with >> various tapes and adhesives that could soften or dissolve. Also, the >> insulation would not insulate very well of saturated with oil, and >> could possibly soften or break down somehow. I would not recommend >> dunking the whole thing in a vat of oil. >> >> And one final, final note: If oil is somehow effectively contained in >> the oscillator block, then a void (bubble) of some sort, or an >> expansion facility or vent would be needed to relieve the pressure >> changes during warmup. Otherwise, when started up, the expanding oil >> would have to either leak out, or deform (or damage) something. This >> would be equivalent to dramatically increasing barometric pressure, >> and certainly effect the oscillator frequency. >> >> Ed >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > > -- > "Neither the voice of authority nor the weight of reason and argument > are as significant as experiment, for thence comes quiet to the mind." > R. Bacon > "If you don't know what it is, don't poke it." > Ghost in the Shell > > > Dr. Don Latham AJ7LL > Six Mile Systems LLP > 17850 Six Mile Road > POB 134 > Huson, MT, 59846 > VOX 406-626-4304 > www.lightningforensics.com > www.sixmilesystems.com > > > > > > ------------------------------ > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > End of time-nuts Digest, Vol 86, Issue 55 > ***************************************** _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
