Source for Replacement 5K Pot for Atari Yoke?

[Neverending Project]

I am looking for a good source for the 5K 320-degree potentiometer found on the Atari yoke (from a Hydra). I found some similar pots at Mouser, but the closest I could find (Mouser #785-53C15K or 785-JA1N056S502UA) do not have a flat shaft. Happ carries one that might work (220-5373 link) but they want $20, and I can't tell what the number of turns is. RAM Controls has a set of two for $20, but they want $15 for shipping, and I don't even think they are in business any more.

The writing on the back of the old pot is:

A-B
EJA1N048F502M
5K-OHM 8932
TYPE EJ
EXTRA LIFE
MEXICO

Any other suggestions of where I can look?

[TheShanMan]

IIRC RAM isn't out of business; David is just out of the country for a few months doing some contract work or something like that. $35 would be a little spendy though!

[Ken Layton]

Use Jameco Electronics # 13995 pot ($8.89). You'll need to file a flat spot on the shaft same as the one you are replacing. This is a good quality Honeywell/Clarostat pot.

Your original pot is still made by Allen-Bradley (get out the wallet!).

[Neverending Project]

IIRC RAM isn't out of business; David is just out of the country for a few months doing some contract work or something like that. $35 would be a little spendy though!

I just got an e-mail reply from Jeremy at RAM Controls (super fast response!) saying that he is still in business, and taking  and shipping orders daily. So there is a $35 option.

Use Jameco Electronics # 13995 pot ($8.89). You'll need to file a flat spot on the shaft same as the one you are replacing. This is a good quality Honeywell/Clarostat pot.

Your original pot is still made by Allen-Bradley (get out the wallet!).

I will check out this one too. Thanks! I will post here when I make sure it is the same fit, for future searchers.

[Neverending Project]

Okay, thanks to Ken I can have some confidence that replacement pots can be found online. I thought I would post a table with some sources I have found. I have to imagine there will be others searching for this same part. I will update this table as I know more info.

Source	Part	Part#	Link(s)	Price Ea	In Stock?	Min. Qty	Shipping
Jameco	Honeywell 53C35K*	13995	website	$9.29	Yes	1	?
Mouser	Honeywell 53C35K*	785-53C35K	website / catalog	$6.76	Yes	1	?
Digi-key	Honeywell 53C35K*	RV4N502-ND	website / catalog	$4.71	No	100	?
RAM Controls	? MIL Spec MIL-R-94	?	website	$20 (qty 2)	Yes?	1	$15
Happ Controls	Replacement 5k Pot Sega	220-5373	website	$20.15	Yes	$25**	?

Notes:
*The Honeywell 53C35K pot has a round shaft. It will need to be filed flat for it to fit correctly.
** Happ needs a $25 minimum order.

[Ken Layton]

EJA1N048F502M is the original Allen-Bradley part number. It's part of their EJ series. Allen-Bradley products are way over-priced.

[Neverending Project]

EJA1N048F502M is the original Allen-Bradley part number. It's part of their EJ series. Allen-Bradley products are way over-priced.

A quick google search shows that Clarostat bought the Allen-Bradley variable resistors in 1990. Do you think they are still manufacturing the Allen-Bradley line?