Learning how to build Lotus Seven replicas...together!
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 Post subject: toggle switch anchorage
PostPosted: August 22, 2017, 4:45 am 
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Joined: March 30, 2011, 7:18 am
Posts: 1395
Location: central Arkansas
Toggle switches (and rheostats) come with a threaded shank with a notch. The notch is supposed to engage a tab in the hole so the switch won't turn. That works fine when you have the correct sheet metal punch to make the odd-shaped hole, and doesn't work at all when you just drill a round hold.

Allied makes "locking rings"; washers with a tab on the inside to grab the shank, and a bent-down tab on the outside to go into a small hole drilled in the panel. Sort of like the lock washers some wheel bearing nuts have.

https://www.alliedelec.com/carling-tech ... /70131727/

File comment: Accessory; Locking Ring; Zinc; Use with Toggle and Pushbutton Switches
Mfr. Part#: 728-15946
Allied Stock#: 70131727

switch ring.jpg
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PostPosted: August 22, 2017, 9:30 am 
Mid-Engined Maniac

Joined: April 23, 2006, 8:26 pm
Posts: 5888
Location: SoCal
Just tighten them really tight and use LockTite - never had them come loose. Before that - all the time.

Midlana book: Build this mid-engine Locost!, http://www.midlana.com/
Kimini book: Designing mid-engine cars using FWD drivetrains, http://www.kimini.com/book_info/

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