Replacement Knob with 1/16" Shaft - Page 1
Forum section: electronics / testgear

author: Odysseus
author_rank: Regular Contributor
timestamp: October 18, 2013, 05:15:57 am
content: I want to restore this B&K Precision Model 1474 scope, and one of the items I need is a replacement knob for the fine adjust on the horizontal control. Anything would do, except the shaft size is 1/16", which turns out to be exceedingly rare/non-existent in my 30 minute escapade across Google, eBay, and various manufacturer catalogs.I could make do with a 1/8" shaft knob, but it will look off center and I feel like I should at least try finding the correct size replacement.Any ideas where I could find one? Got one in your junk bins or on a broken piece of equipment?

author: Unknown
author_rank: Unknown
timestamp: October 18, 2013, 07:19:58 am
content: Spherein Canada andQservicein Greece sell parts (including knobs) for old HP and Tektronix equipment. You may be able to find a similar part there, but don't expect it to be cheap.

author: Stonent
author_rank: Super Contributor
timestamp: October 18, 2013, 08:26:08 am
content: Quote from: wilfred on October 18, 2013, 06:15:27 amBK, Trio and Kenwood seemed to share a lot of hardware from my research into CROs

author: grumpydoc
author_rank: Super Contributor
timestamp: October 18, 2013, 11:30:27 am
content: I feel your painreplacing knobs is often the hardest part of any restoration or repair.As well as checking sphere and qservice have a look around for other scrap 'scopes - a 1/16" shaft seems fairly common for the concentric controls.Check ebay as well.

author: N2IXK
author_rank: Frequent Contributor
timestamp: October 18, 2013, 07:07:58 pm
content: How about making a bushing from a short piece of 1/8" OD, 1/16" ID brass or aluminum tubing?

author: ivan747
author_rank: Super Contributor
timestamp: October 18, 2013, 08:58:17 pm
content: Quote from: N2IXK on October 18, 2013, 07:07:58 pmOr 3D printing it, if you wanna feel trendy.A Hack-A-Dy article is almost guaranteed.

author: baljemmett
author_rank: Unknown
timestamp: October 20, 2013, 12:21:30 am
content: Quote from: Stonent on October 18, 2013, 08:26:08 amTrio and Kenwood isn't surprising - they're two names for the same company. Trio used the Kenwood name in the US, to sound more local, and at some point (in the early 80s, I think?) adopted the name internationally as well. At one point the company traded as Trio in Japan, Kenwood in the US and Kenwood-Trio everywhere else, although I think products were only branded as one or the other.(Actually, having done a bit of digging, the Kenwood name looks like it was more widespread than just the US before they went all-out with it, or alternatively its use was increased in stages -- glancing at the parts listings for my father's 1974 Trio receiver, it suggests the Trio faceplate was used in the UK, Japan and possibly parts of Europe, but the Kenwood version everywhere else -- unless I'm completely misremembering whereabouts on the front panel the model designation is printed!)

author: amyk
author_rank: Super Contributor
timestamp: October 20, 2013, 08:12:02 am
content: Quote from: ivan747 on October 18, 2013, 08:58:17 pmOr just wind some tape around it...