Gary: I decided that I couldn’t wait until the end of the week to try the fix, so I worked on it during lunch. I soldered the aft gear to the bushing as you had suggested. All fixed, works like new. Thanx again for your trouble and advice.
Ron: Although the website you pointed me to didn’t lead to the fix, thank you for taking the time to respond with a good suggestion. BTW, the TR-7 you sold me in January 2004 has been running strong, and except for a bad PIN diode the radio hasn’t so much as hiccupped. 73, Jim W2BVM From: Gary Poland [mailto:gpola...@cinci.rr.com] Sent: Tuesday, October 11, 2011 9:34 AM To: radio6...@yahoo.com; drakelist@zerobeat.net Subject: Re: [Drakelist] R-4C PTO Dial Mechanism Problem Jim, After re-reading your email I do believe your problem is with the anti-backlash gear/bushing shown in your pictures 6 and 7 as you suspected. The two anti-backlash gears are suppose to be tight and not easily move on the brass bushing. I think you could probably tighten them up by placing the assy in a vise and “ peening “ the aft gear at the brass bushing with something round such as a socket or tube. The other possibility would be maybe to try and solder the bushing to the aft gear. Like I said in my previous email the gears are suppose to be tight on the brass bushing but at least one gear would need to be slightly free to move for the anti-backlash to work. The gear assy I have both gears will move on the bushing with some force applied. 73, Gary
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