Re: [Drakelist] R-4A PTO, Act III
All the ones I have seen are points up and down--diamond style. This provides both lateral and vertical support for the rod. Curt KU8L Steve Wedge wrote: Now I'll get a little too granular: should I orient it with a corner on the bottom, or let it ride on the edge of the square? Thanks, Curt, Garey and Gary for all your help so far! Steve Wedge, W1ES/4 To be is to do - Socrates To do is to be - Plato Do be do be do. - Sinatra All my computers have my signature with various pearls of wisdom appended thereto. -- From: Curt Nixon cptc...@flash.net Sent: Monday, July 18, 2011 7:11 PM To: Steve Wedge w1es1...@earthlink.net Cc: Gary Poland gpola...@cinci.rr.com; k4...@mindspring.com; drakelist@zerobeat.net Subject: Re: [Drakelist] R-4A PTO, Act III Hi Steve: I'm not sure it doesn't matter if the end pc is flush or not but keep it perpendicular to the core axis. You may just have found the culprit there. I like Ambroid cement but nearly anything will work as an adhesive there. A small amount of 5 min epoxy or even some carpenters glue. Curt KU8L Steve Wedge wrote: I thought it would be something of that nature. I have taken the PTO apart enough to slide the coil form off the slug and at least initially I don't see any cracks or loose segments. However, the diamond-shaped washer at the end of the coil came out easily as if it wasn't glued at all. It was flush with the end of the form, but I see that it could be recessed in the brown sleeve so that it is against the white coil form. Does the washer/spacer need to be flush, or bedded down against the form? I'm going to supper shortly, so won't get to look at the slug under my microscope until the table is cleared Winking smile emoticon I have pics if needed. I'm going to clean the whole thing with IPA. Steve Wedge, W1ES/4 To be is to do - Socrates To do is to be - Plato Do be do be do. - Sinatra All my computers have my signature with various pearls of wisdom appended thereto. *From:* Gary Poland mailto:gpola...@cinci.rr.com *Sent:* Monday, July 18, 2011 6:10 PM *To:* Steve Wedge mailto:w1es1...@earthlink.net *Cc:* drakelist@zerobeat.net mailto:drakelist@zerobeat.net *Subject:* Re: [Drakelist] R-4A PTO, Act III Steve, The T-4X puts a –30 volts on the INJ line when the XMTR position is selected. That –30 shuts down the R-4A’s premixer V8. In RCVR position the –30 volts is removed, the T-4X’s PTO output is deselected, and the R-4A’s injection is then free to be boss. 73, Gary ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] PTO Question and Drake 4C Questions
I am watching the PTO chatter on here and that got me to thinking about Drake PTO's with respect to smooth tuning and lubrication. I have owned several Collins radios and know how grease can get dried out and cause the PTO to drag. I've cleaned out and lubed two PTO's so far. I am not familar at all with the Drake PTO's or what their mechanism is. I do hear talk all the time about their 'smooth tuning' so I have high expectations. Do they suffer from dried out grease problems like the Collins PTO's and have to be cleaned and relubed? I am looking at buying a Drake 4C line and one station I'm looking at has not been used since the early 90's which makes me a bit nervous for several reasons. Are there any weaknesses with the Drake 4C line equipment that I need to consider when buying a station, and particularly that has not been used for a long time? Has here been any problem with power transformer insulation going bad and wires shorting internally? I saw an L-4B for sale some time back and noticed that as a part of the restoration, a new power transformer was installed. Is this a common thing or rare? As always, the electrolytics are suspect. I would imagine replacing all the electrolytics in the L-4B would be prudent for example. My Collins 30L-1 came with all of the HV electrolytic caps ruptured for example. Are there other problems that I should be looking out for? How common how the station consoles, the one with the mechnical/digital clock? Any 4C stations for sale from list members here? I am nearing the completion of a massive radio sell off, having sold maybe 60% of my stuff in the last year, and having maybe 15% more to go before I reach equilibrium. I have some tradeables left including a near minty Hallicrafters SX-115, Johnson Ranger 1, Collins 75A-2, Ten Tec Corsair w/PS 250 hz filter, Collins S-line 32S-3/75S-3B/516F-2, Heathkit SB-200, National SW-3. Thanks, 73, Scott WA9WFA ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] PTO Question and Drake 4C Questions
hz filter, Collins S-line 32S-3/75S-3B/516F-2, Heathkit SB-200,?National SW-3. Thanks, 73, Scott WA9WFA -- next part -- An HTML attachment was scrubbed... URL: http://mailman.zerobeat.net/pipermail/drakelist/attachments/20110719/dbdacb85/attachment-0001.html -- ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist End of Drakelist Digest, Vol 37, Issue 44 * ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] RV-7 External VFO Problem
Abuddy of mine who knew that I was going to a hamfestthis past Sundayasked me to pick up an RV-7 external VFO for use with his TR-7.I saw one at an agreeable price, was assured by the seller that it was in working condition, and I purchased the RV-7.When I connected it to my TR-7A is was as "dead as a doornail!" Absolutely nothing.Anyone have any suggestions before I start to really tear into the RV-7? I checked the obvious, eg. connections inside the Jones plug, looked carefully for any broken wires or missing componenents, etc.Anyhelp would be appreciated.Tnx 73 Ed K2ZE ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] R4A on an inverter
The power consumption of the R4a is 60 watts and I'd like to run the radio off my 12 volt car cigarette lighter using a 130 watt PSW inverter. I think the fuse is 10 amps. So 12.5 volts x 10 amps=125 watts. But I heard of fuses blowing running only laptops. It looks good on paper, but practically will this work? ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
