[GreenKeys] 28 mini KSR (ugc-20/ugc-77) speed

Tue Sep 26 15:21:49 EDT 2023

Admittedly, I haven’t followed this thread very carefully. And maybe this information isn’t pertinent but, on my M28KSR with the 3 speed gearbox, I cannot switch speeds while the motor is running. I have to stop the motor and just before it comes to a halt I can change the gear lever. Actually, its easier just to wait for it to stop and move the motor by hand as I change the gears. Again, this could be totally irrelevant to this discussion but I thought I’d mention it.

73 Eugene W2HX
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From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> On Behalf Of John, W9DDD
Sent: Tuesday, September 26, 2023 3:08 PM
To: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] 28 mini KSR (ugc-20/ugc-77) speed

Well I stood on my head and squinted and managed to find a position where I can get a screwdriver onto the second set screw (on the side). Now have both set screws as tight as I can get them.

It seems to me that it's taking too much force even if I grab the rod at the back end and wrestle it there instead at the knob.  Is it possible I've missed something in the lubrication process?

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You said "tomorrow" yesterday.

The above comments or recommendations are SWAG. Use at your own risk.

John, W9DDD
On 9/26/2023 11:44 AM, John, W9DDD wrote:

Well this made me take the cover off of mine.  I think my problem is that I can't get enough bite on the new knob to keep it from slipping.  With the cover off and access internally I can shift all 3 speeds.  The original knob would have a screw going through the hole in the shaft so no slippage problem with it.

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You said "tomorrow" yesterday.

The above comments or recommendations are SWAG. Use at your own risk.

John, W9DDD
On 9/26/2023 11:03 AM, Nick England wrote:
Here's a video of shifting gears on a 28 Compact - there are very distinct sounds while running and shifting between the three speeds. Are you really shifting to the 45 baud gears?
https://www.navy-radio.com/tty/28-compact-gearchange.MOV

Nick England K4NYW
www.navy-radio.com<http://www.navy-radio.com>

On Sat, Sep 23, 2023 at 9:16 PM Nick England <navy.radio at gmail.com<mailto:navy.radio at gmail.com>> wrote:
There are 3 separate pairs of gears that get selected by the lever. So somehow you aren’t really selecting the 45.5 pair. There is no adjusting the speed except by selecting one of the pairs. I’ll take some photos.
Nick

On Sat, Sep 23, 2023 at 8:15 PM Jeffrey Golas <jeffg at junknet.net<mailto:jeffg at junknet.net>> wrote:
Hey all, figured Id ask here too. At the ship we have this ugc-77 (low level 28 mini) that has a selectable gearbox (45.5/50/75 baud). Despite putting it on far counter-clockwise position, its stuck at 50 baud and not 45.5. Does anyone know if I can adjust it further to get it back to 45.5?

I guess I should RTFM too.

Jeff KC3GJX
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