Products > Test Equipment

A new fan for a Tektronix 2465

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edavid:

--- Quote from: BravoV on November 14, 2013, 05:38:31 am ---Did I miss anything here ? Why the need a custom / weird or hard to find fan ?

Although I'm not sure if its the same for 2465, but at my 2465B, it uses just standard ordinary 12 Volt fan, any good industrial fan as long with similar or higher current like later generation fan such as old Panaflo (Panasonic)/NMB or SanyoDenki or Nidec should be good enough.

--- End quote ---

Nope, it's not the same.  The 2465 uses a custom fan.

ETA: It uses a Siemens 1AD3001-OA 1AD3001-0A motor, which occasionally turn up on eBay or other sources.

BravoV:

--- Quote from: edavid on November 14, 2013, 05:52:14 am ---Nope, it's not the same.  The 2465 uses a custom fan.

--- End quote ---

Ahh .. no wonder, ok, just knew this.

This will be noted and could be useful if my local seller trying to offer me a 2465, an advantage for further "deep" bargaining point, thanks.  >:D

amyk:
That is certainly an unusual choice (and construction) of fan motor... could it be replaced with a small brushless motor of the type used for RC planes?

siggi:

--- Quote from: VintageTekFan on November 14, 2013, 12:10:58 am ---Picture as promised.

After looking at it again, I think I'm going to add in some insulating material under the leads, since the chassis connects to common.

--- End quote ---

Thanks, this helps a lot, good to see others have done this successfully. Do you use the scope with the back cover on, or "nude" like this?


--- Quote from: amyk on November 14, 2013, 09:31:04 am ---That is certainly an unusual choice (and construction) of fan motor... could it be replaced with a small brushless motor of the type used for RC planes?

--- End quote ---

I've looked around but haven't found anything suitable. The original design is wonderfully quiet until the bearings go, and I'm not sure a random RC motor would be able to match. The R/C motors are typically designed for maximal power/weight ratio, but this motor is all about just being quiet.
According to Matthew who did this restoration [http://www.antiqueradios.com/forums/viewtopic.php?uid=30281&t=235478] even the 2465A/Bs with slow running 80mm case fans don't match the original 2465 in the low, low fan sound.

NB: Matthew will/is offering this fan motor restoration as a service. It's pricey as there's a lot of manual labor involved - you have to dismantle and unwind the motor before you can get to the bearings.

VintageTekFan:

--- Quote from: siggi on November 14, 2013, 02:06:52 pm ---Thanks, this helps a lot, good to see others have done this successfully. Do you use the scope with the back cover on, or "nude" like this?

--- End quote ---

I use it with the back cover on - it originally came rack-mounted, so there are only 4 screws keeping it on.

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