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New 466 owner

 

Just picked up a 466 over the weekend. Works fine, but the only problem was the Var knob on CH 2 is broken. Opened it up and saw it was the coupler that connects the two shafts that's broken. Is there a source for the couplers? I might just leave it alone as it looks like a real pain to get down to the Ch 2 stuff.

Thanks,
-d
Paul Kraemer
 

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I'm looking for same item
Paul K0UYA

----- Original Message -----
Sent: Monday, March 18, 2013 8:04 AM
Subject: [TekScopes] New 466 owner

?

Just picked up a 466 over the weekend. Works fine, but the only
problem was the Var knob on CH 2 is broken. Opened it up and saw it
was the coupler that connects the two shafts that's broken. Is there
a source for the couplers? I might just leave it alone as it looks
like a real pain to get down to the Ch 2 stuff.

Thanks,
-d
Tom Jobe
 

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Those fragile plastic flex connectors are impossible to find as far as I know, but I question whether a flex coupler is even needed there. The VAR shaft from the knob back to that flex connector?is a piece of 1/8" fiberglass rod which I imagine takes care of the insulation out to the knob, so maybe a normal aluminum connector would be just fine. The fiberglass rod?should take care of any misalignment too.
The last 1/8" shaft connectors I bought were from Veronia Northern but I'm sure you can get them from others.
Part number 376-0029-00 on this page:
These are those connectors with two set screws, that look like a piece of thick wall aluminum tubing.
tom jobe...
?
?
?

----- Original Message -----
Sent: Monday, March 18, 2013 6:04 AM
Subject: [TekScopes] New 466 owner

?

Just picked up a 466 over the weekend. Works fine, but the only
problem was the Var knob on CH 2 is broken. Opened it up and saw it
was the coupler that connects the two shafts that's broken. Is there
a source for the couplers? I might just leave it alone as it looks
like a real pain to get down to the Ch 2 stuff.

Thanks,
-d
raymonddompfrank
 

I often use silicon fuel tubings as used for miniature (1:8) petrol racing cars. Make sure the inner diameter is small enough to give a tight fit and use length of 1 - 1.5", so it won't slip. Wall thickness is often .1", which is a good thing.

Alternatively, many 7000-series plug-in modules contain the same couplers and parts units can be had for pennies.

Raymond

--- In TekScopes@..., "Tom Jobe" <tomjobe@...> wrote:

Those fragile plastic flex connectors are impossible to find as far as I know, but I question whether a flex coupler is even needed there. The VAR shaft from the knob back to that flex connector is a piece of 1/8" fiberglass rod which I imagine takes care of the insulation out to the knob, so maybe a normal aluminum connector would be just fine. The fiberglass rod should take care of any misalignment too.
The last 1/8" shaft connectors I bought were from Veronia Northern but I'm sure you can get them from others.
Part number 376-0029-00 on this page:

These are those connectors with two set screws, that look like a piece of thick wall aluminum tubing.
tom jobe...



----- Original Message -----
From: Dan Aldrich
To: TekScopes@...
Sent: Monday, March 18, 2013 6:04 AM
Subject: [TekScopes] New 466 owner



Just picked up a 466 over the weekend. Works fine, but the only
problem was the Var knob on CH 2 is broken. Opened it up and saw it
was the coupler that connects the two shafts that's broken. Is there
a source for the couplers? I might just leave it alone as it looks
like a real pain to get down to the Ch 2 stuff.

Thanks,
-d
 

Thank you for all the suggestions. I think I will try the tubing. With a bit of luck, might even be able to do it a part gripper and not need tearing down down the scope.

Now to find a cover...

-d
 

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I've also been known to replace the fiberglass with a normal grocery-store style wooden skewer. Then ones I have are exactly the same size.

Respectfully,
Cliff White, W5CNW
On 03/18/2013 03:37 PM, Dan Aldrich wrote:

Thank you for all the suggestions. I think I will try the tubing. 
With a bit of luck, might even be able to do it a part gripper and 
not need tearing down down the scope.

Now to find a cover...

-d




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Tom Jobe
 

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Because I needed one of those 1/8" plastic flex joints recently and did not have one, I extended an .050" hex wrench today?and changed those couplers on a 465. I?replaced the two flex joints with two of those 1/8" aluminum couplers from Veronia Northern and it all worked perfectly.
You need to remove the bandwidth shaft and a couple of other small bits?to get good access but it was just a few minute job once the hex wrench was lengthened.
tom jobe...
PS The shaft length on the VAR pot is only .400" or so, and it is fairly stiff to rotate.
?
?
?

----- Original Message -----
Sent: Monday, March 18, 2013 6:04 AM
Subject: [TekScopes] New 466 owner

?

Just picked up a 466 over the weekend. Works fine, but the only
problem was the Var knob on CH 2 is broken. Opened it up and saw it
was the coupler that connects the two shafts that's broken. Is there
a source for the couplers? I might just leave it alone as it looks
like a real pain to get down to the Ch 2 stuff.

Thanks,
-d
 

开云体育

Put a drop of oil on the shaft near where it enters the pot. I use PB Blaster penetrate oil. In 15 minutes, the thing will be like new.
?
Tom
?

----- Original Message -----
From: Tom Jobe
Sent: Monday, March 18, 2013 6:53 PM
Subject: Re: [TekScopes] New 466 owner

?

Because I needed one of those 1/8" plastic flex joints recently and did not have one, I extended an .050" hex wrench today?and changed those couplers on a 465. I?replaced the two flex joints with two of those 1/8" aluminum couplers from Veronia Northern and it all worked perfectly.
You need to remove the bandwidth shaft and a couple of other small bits?to get good access but it was just a few minute job once the hex wrench was lengthened.
tom jobe...
PS The shaft length on the VAR pot is only .400" or so, and it is fairly stiff to rotate.
?
?
?
----- Original Message -----
Sent: Monday, March 18, 2013 6:04 AM
Subject: [TekScopes] New 466 owner

?

Just picked up a 466 over the weekend. Works fine, but the only
problem was the Var knob on CH 2 is broken. Opened it up and saw it
was the coupler that connects the two shafts that's broken. Is there
a source for the couplers? I might just leave it alone as it looks
like a real pain to get down to the Ch 2 stuff.

Thanks,
-d
Tom Jobe
 

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Thanks Tom,
Your suggestion about applying some oil worked perfectly on the vertical VAR pots of this 465!
tom jobe...
?

----- Original Message -----
From: Tom Miller
Sent: Monday, March 18, 2013 4:29 PM
Subject: Re: [TekScopes] New 466 owner

?

Put a drop of oil on the shaft near where it enters the pot. I use PB Blaster penetrate oil. In 15 minutes, the thing will be like new.
?
Tom
?
----- Original Message -----
From: Tom Jobe
Sent: Monday, March 18, 2013 6:53 PM
Subject: Re: [TekScopes] New 466 owner

?

Because I needed one of those 1/8" plastic flex joints recently and did not have one, I extended an .050" hex wrench today?and changed those couplers on a 465. I?replaced the two flex joints with two of those 1/8" aluminum couplers from Veronia Northern and it all worked perfectly.
You need to remove the bandwidth shaft and a couple of other small bits?to get good access but it was just a few minute job once the hex wrench was lengthened.
tom jobe...
PS The shaft length on the VAR pot is only .400" or so, and it is fairly stiff to rotate.
?
?
?
----- Original Message -----
Sent: Monday, March 18, 2013 6:04 AM
Subject: [TekScopes] New 466 owner

?

Just picked up a 466 over the weekend. Works fine, but the only
problem was the Var knob on CH 2 is broken. Opened it up and saw it
was the coupler that connects the two shafts that's broken. Is there
a source for the couplers? I might just leave it alone as it looks
like a real pain to get down to the Ch 2 stuff.

Thanks,
-d

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