Thats awesome. Thank you, John.? I will have to mount the cap and take measurements.? I have a 4th?cap on the way and my fingers are crossed this time.? I will report back!
C
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Clark,
What is the offset distance between the two shafts, as precise as you can get. Vertical and horizontal I¡¯m willing to try to machine from some plastic stock gears I have that was from some previous projects that I didn¡¯t use. ?Would make a set of 3 with
the plates to hold the idler in place. ?Need to also know the distance between the ends of the two shafts as well. ?Before making I can email you a paper template to make sure we have everything ?correct.?
As a quick fix, the nylon bars drilled to go on the shafts with a grove for the o-ring would be a choice as well. ?If you want to try those can machine those for you as well. ? I have different sizes of nylon and delrin bars available. ?
Always need to keep as many of these great old radios on the air.?
You can contact me direct , good on QRZ
73
John
KG5YLG?
On Apr 4, 2024, at 7:15 PM, Dave Jordan <wa3gin@...> wrote:
?
Look at the entire video at the end of the video that very device exists. I was so amazed you can make anything these days.
The gears are easy to print but you'll need an idler gear between the two or the knob will work backwards . That would entail some kind of holder between the shafts?
Ian
N6UH?
Have you checked out SDP/SI and robot parts suppliers for small gears??
On Apr 4, 2024, at 5:46?PM, Dave Jordan <wa3gin@...> wrote:
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I¡¯ll bet someone on here has a grandkid with a 3D Printer that would enjoy cranking out a few gears!
73
Dave
On Thu, Apr 4, 2024 at 4:07?PM waltcates < cateswa@...> wrote:
SORRY that last one should have gone to the SR-2000 can't null carrier topic.
Walt Cates, WD0GOF
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A majority of acceptance is not proof of correctness.
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I don't remember, and can not find It written down, what is the capacitance range of each section?
I have kind of lost track on this topic, but if you have not found an exact replacement, try some of the Collins sources. They used the exact same part.
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There is no room to move the cap to line up. It would stick out of the PA cabinet.? ?Any lower and it his the Tune cap. Its really tight in there Walt.? I will figure something out!? We must save this thing.
C
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Have you looked at the possibility of moving the mounting holes of the U bracket the capacitor is mounted. Or making a new bracket to align the shafts.
Walt Cates, WD0GOF
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A majority of acceptance is not proof of correctness.
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That might work Don.
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How about a piece of 1/2 plastic rod, drill a 1/4" hole down the middle, slice off a couple sections and sleeve them on to the two shafts. Then run an O ring as a belt like Heathkit did on the HW 101?
Don ve3ids?
On Thu., Apr. 4, 2024, 11:43 a.m. W7WRX, < clark@...>
wrote:
NO???inch.? They would have to be machined out.? Also NO double joints. So I would have to run two back-to-back to make the JOG. Remember, the shaft is 1 inch DOWN and about an inch OVER.? If I had those in hand I might be able to make something work tho!
C
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How about these? You would still need your insulated coupling in the string.?
C$2.83? 70%OFF | Rc Boat Car Metal Cardan Joint 2mm/2.3mm/3mm/3.175mm/4mm/5mm/6mm/8mm Gimbal Couplings Shaft Motor Connector Universal Joint
73 Don ve3ids?
On Thu., Apr. 4, 2024, 11:03 a.m. Dave Jordan, < wa3gin@...>
wrote:
Hamfest season is coming!? Maybe with luck someone has what you need.? An alternative would?be to take a page from the ALPHA78 design and install a few fixed variable caps for a couple of your favorite bands and mount the switch for
those on the load control shaft until you find the exact replacement cap.? Should be enough room in the final cage for a switch and a couple of caps. I'll keep my eyes open for that air variable load cap.? ?73 dave
On Thu, Apr 4, 2024 at 10:52?AM W7WRX < clark@...>
wrote:
I went down that road. Can't find one online. I would need a double joint 1/4 inch.? That might be possible if I could find some parts.
Possibly a flexible coupling shaft or maybe you can rig up a shaft with a universal joint in it?
?
Tom
W3TA
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I am now three caps in.? None fit.? This one fits but shafts do not line up.? This must have Been a custom order cap for hallicrafters.??
Anyone got any ideas now?? Looking for a cap is officially over.? Now unfortunately we must modify the radio.
If I use gears, knob rotation will be backwards.?
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