Dino,
This is normal operation for a vernier drive that has either sat for an extended period of time unused or, in less frequent cases, one that has had a lot of use. There are ways of cleaning, relubing, and then repositioning things so the drive has "renewed bite" so to speak. However, for all it takes to do this in terms of time and effort, one can consider just replacing the drive itself. It is a matter of personal preference. Good luck with your decision. 73, Evan -----Original Message----- From: Dino Papas <[email protected]> To: Mail List - Drake Gear Drake Gear <[email protected]> Sent: Thu, Jan 13, 2011 3:59 pm Subject: [Drakelist] L-4B Plate Tuning Cap Question Well, today in anticipation of rebuilding my L-4BPS I decided to finally install the Harbach soft-start module in the amp (hey, its only been sitting in the project queue for a few years....no sense in rushing). While I had it open did the normal maintenance stuff, lubed the fan etc. I've had a problem now for a couple of months with the plate tuning cap turning action. Somewhere between the 80m and 40m sections the turning action slows down to a standstill and you'd have to spin the knob several times to get it to move VERY slowly thru its rotation. With the amp opened up I found that a little bit of pressure applied either as a push or pull would get the cap to rotate at almost normal speed throughout its rotation. Not wanting to screw something up I decided to leave it alone and check with the group. It may just be that after 32 years the rotation mechanism is just wearing out. Anyone else experience this? If so any fixes? Thanks in advance! Dino KL0S BTW, the Harbach module works great....the power supply board is built and ready to install but think I've done enough for today! _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
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