Speed Control Issue
Posted: Mon Jun 06, 2022 6:35 pm
I have researched this issue and found this thread viewtopic.php?t=29211&hilit=speed+control
I am getting a similar drift problem but my question relates to the setscrew connection between the Speed Control Handle (84) and the Worm Control Shaft (87). See attached photos.
My Speed Control Handle wants to come off the shaft during operation. Pinion teeth are not worn. and the setscrew threads are OK.
But look at that huge oval indent on the Worm Control Shaft! Does anybody know if that still how they come from the factory? Or is that wear from the setscrew?
It's like the setscrew manages to vibrate its way past that sloppy oval detent. I have tightened that little setscrew to the max, but the dial still wants to slip out of engagement with the Idler gear (93) and off the shaft.
Dial Spring (83) does spring-load the dial to prevent drift, but in doing so its force also tends to cock the dial and push it partially off the shaft! And when that happens we lose our gear engagement and our speed control.
Anyway, I have resorted to duct-taping the dial so speed will not drift, but I know that is just a band-aid. I would buy new parts but I really don't see any wear on the current parts unless it's on that shaft. Just not a terrific design to begin with.
Anyone have advice? Didn't Bill Mayo do a mod on the speed dial teeth to address this issue?
I am getting a similar drift problem but my question relates to the setscrew connection between the Speed Control Handle (84) and the Worm Control Shaft (87). See attached photos.
My Speed Control Handle wants to come off the shaft during operation. Pinion teeth are not worn. and the setscrew threads are OK.
But look at that huge oval indent on the Worm Control Shaft! Does anybody know if that still how they come from the factory? Or is that wear from the setscrew?
It's like the setscrew manages to vibrate its way past that sloppy oval detent. I have tightened that little setscrew to the max, but the dial still wants to slip out of engagement with the Idler gear (93) and off the shaft.
Dial Spring (83) does spring-load the dial to prevent drift, but in doing so its force also tends to cock the dial and push it partially off the shaft! And when that happens we lose our gear engagement and our speed control.
Anyway, I have resorted to duct-taping the dial so speed will not drift, but I know that is just a band-aid. I would buy new parts but I really don't see any wear on the current parts unless it's on that shaft. Just not a terrific design to begin with.
Anyone have advice? Didn't Bill Mayo do a mod on the speed dial teeth to address this issue?