Hi Remember that if you are going to do any of this - you will need a good temperature test system to figure out weather you are making things better or worse. There is a lot of varibility between 10811's….
Bob On Sep 20, 2011, at 2:39 PM, Dick Moore wrote: > 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, [email protected] wrote: > >> ------------------------------ >> >> Message: 2 >> Date: Mon, 19 Sep 2011 18:21:30 -0700 >> From: ed breya <[email protected]> >> To: [email protected] >> Subject: [time-nuts] Making a HP 10811 better >> Message-ID: <[email protected]> >> 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" <[email protected]> >> To: "Discussion of precise time and frequency measurement" >> <[email protected]> >> Subject: Re: [time-nuts] Making a HP 10811 better >> Message-ID: >> <[email protected]> >> 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 -- [email protected] >>> 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 >> [email protected] >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> >> End of time-nuts Digest, Vol 86, Issue 55 >> ***************************************** > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
