Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair
|
|||
|
|||
Drive shaft coupler for oscilloscope controls
Hi
I have a Hameg HM-408 scope that uses extended shafts to go from the front panel to the switch / pots mounted inboard on the PCBs. These shafts are 2mm dia and the switches / pots are 4mm dia and are connected via flexible couplings. Five of these couplings have failed and so I'm looking for suitable replacement couplings that will connect to the 2mm shaft on the control knob and onto the 4mm shaft from the pots / switches. Can any point me in the direction of possible replacement units? |
#2
Posted to sci.electronics.repair
|
|||
|
|||
Drive shaft coupler for oscilloscope controls
|
#3
Posted to sci.electronics.repair
|
|||
|
|||
Drive shaft coupler for oscilloscope controls
|
#4
Posted to sci.electronics.repair
|
|||
|
|||
Drive shaft coupler for oscilloscope controls
On Monday, May 8, 2017 at 7:51:58 AM UTC-7, wrote:
I have a Hameg HM-408 scope that uses extended shafts to go from the front panel to the switch / pots ... Five of these couplings have failed and so I'm looking for suitable replacement couplings that will connect to the 2mm shaft on the control knob and onto the 4mm shaft from the pots / switches. Well, H. H. Smith used to make a line of couplings (and flexible shafts). I'm uncertain where to find them nowadays. Most flexible couplings are intended for motor shafts, will be VERY expensive for your application. It's possible to buy speedometer cable by the foot, and anyone with a lathe can make epoxy-able ends for your choice of shafts. I've done that... only worthwhile for long runs, of course. Do these couplings just need to have compliance for minor misalignment or shaft position offset? This kind is good for position offset http://candycontrols.com/products/oldham-couplings/ and the universal-joint and spring types only handle angle misalignment. Two of those with a stub shaft between is how they handle offset. |
#6
Posted to sci.electronics.repair
|
|||
|
|||
Drive shaft coupler for oscilloscope controls
On Monday, May 8, 2017 at 10:51:58 AM UTC-4, wrote:
Hi I have a Hameg HM-408 scope that uses extended shafts to go from the front panel to the switch / pots mounted inboard on the PCBs. These shafts are 2mm dia and the switches / pots are 4mm dia and are connected via flexible couplings. Five of these couplings have failed and so I'm looking for suitable replacement couplings that will connect to the 2mm shaft on the control knob and onto the 4mm shaft from the pots / switches. Can any point me in the direction of possible replacement units? How much flex do you need? Spiral cut flexible coupling might be cheap. (As someone said you might be able to drill out one end.) George H. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Making a slotted flexible shaft coupler | Metalworking | |||
How to make a weed eater drive shaft? | Home Repair | |||
Flexible small drive shaft? | Metalworking | |||
kenmore washer drive coupler | Home Repair | |||
Boxford shaper - loose (?) drive shaft | Metalworking |