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Do you have a part number for the key switch? I've found a few Arro Hart key switches and am trying to determine which, if any, are the correct one. I assume that you can only remove the key from the switch in the Off position. Thanks. Cheers, Jon
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BAR 2007 |
#22
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Yes, the key should only be removable in the off position. I actually acquired a second Centuri Professional panel that the key comes out only in the on position, but I think either the switch is defective or it was replaced and wired incorrectly by a former owner. It just doesn't make sense to have the key removable in the on position. Earl
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Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#23
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The key switches I have don't show a part#. The switch I used in my replica appears to be externally identical to what was used in the original. However it, nor any of the switches that I have retain the key in the on position, it might be they are a later version that lack that feature (key is missing notches). I checked eBay today and there are several vintage type Arrow Hart switches available (not mine). I don't know if they have the 'remain in when on' type key. Last edited by JohnNGA : 04-10-2020 at 04:49 PM. |
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Does this help ?
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NOTE : The LAST Photo clearly shows a "notch" in the key. Presumably, this is what makes it "non-removable" except in the "Off" position, when the slots line up . . . The 1561 Key DOES NOT have this "notch" !
Therefor, the "1561" switch is NOT the correct one. Unfortunately, I have been unable to locate the "specs" for these switches . . . An old catalog would likely be most helpful ! Dave F. Last edited by Ez2cDave : 04-10-2020 at 06:29 PM. |
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Thanks Dave, That explains a lot..mine are all 1561. |
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The problem is trying to determine the correct Part # . If anyone can locate an old Arrow Hart catalog ( these switches were still available in the early to mid- 1980's, from what I've read. This "MONSTER" exists, but the right switch type is no longer made, it appears. If you have "nothing better to do", have at it ! https://www.cesco.com/resources/pdf...256-Catalog.pdf Dave F. Last edited by Ez2cDave : 07-15-2022 at 10:29 AM. |
#28
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There is a possibility that I may have located the switch . . . (SWZ) 81715-L
https://www.surplussales.com/switch...eyswitch-1.html Dave F. |
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Yeah, that appears to be it. The key on the newer one looks different obviously, but same part number and the key does lock in the on position. Good find!
I have an extra loose switch, but it is not real handy to check any part numbers on it. And I can’t recall right off hand if it locks in the on position or not. Earl
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Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
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Since the pandemic started our club started using, for our outreach launches, Estes controllers and pads in a "misfire alley" setup.
I thought it would be cool to make heavier-duty panels for the launches, and remembered this thread. YIKES. The prices on the parts is astonishing! I was thinking of making six or seven (five "live," one spare, one for myself) units. The cost looks prohibitive. I guess I could put together something with 20' extension cords, using the plugs and receptacles as safety keys and maybe some kind of lamp and button in a chunk of PVC pipe with end caps. * * * Has anyone looked into what it would take to replace the incandescent bulb with a nice bright LED? What size resistor would be necessary?
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NAR #27085 - Oregon Rocketry - SAM |
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