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Knob... - Hugh Barnes - 09-01-2024
Might anyone have a serviceable gear lever knob going spare? I find myself in need of one.. The only one I have is rather large and, although it screws on, feels very odd, rather like a tennis ball...
thanks in advance for any offers..
Hugh
RE: Knob... - Chris KC - 09-01-2024
Hugh, I think they came in different sizes. The majority(? Ruby etc.) are about 1 1/2" diameter, I have one of those if you want it. I've seen smaller ones though - not sure which you are after.
RE: Knob... - Hugh Barnes - 09-01-2024
I'll have to check tomorrow, but anything smaller than the only one I have would probably do.. The 1 1/2" is probably the one I seek. I'll give you a shout tomorrow...
Ta...
RE: Knob... - Howard Wright - 09-01-2024
Hi Hugh
I bought an aluminium 30mm ball threaded M8 off eBay for my special. It matched the size of the original knob on my RK. I’ve also bought smaller black plastic machine handle balls for my home made mill. The only problem could be the metric thread but aluminium or plastic are easy to drill and tap.
Cheers
Howard
RE: Knob... - Tony Griffiths - 09-01-2024
You may find that this firm has what you need - the holes are plain, so can be tapped as required. Whitworth threads in balls seem to be no longer available: https://www.bpfonline.co.uk/search.asp?catid=10720
RE: Knob... - Hugh Barnes - 09-01-2024
Thank you both, Howard and Tony. Very useful pointers, particularly Tony’s suggestion which sells female ball knobs. A first for me…
RE: Knob... - Lowespeed - 09-01-2024
The Seven Workshop lists the knob for the three speed gearbox
https://www.theaustinsevenworkshop.com/products/g0530a-gear-knob-3-speed
And David Cochrane lists both. It seems to suggest the the four speed is bigger than the three speed
RE: Knob... - David Cochrane - 09-01-2024
Yes, the 4-speed one is bigger (1½" dia) than the 3-speed one (1¼" dia).
RE: Knob... - Hugh Barnes - 10-01-2024
My apologies to our cherished suppliers, I never thought that new ones would be available..
RE: Knob... - Colin Wilks - 12-01-2024
Good lead Tony. I just received a 45mm Duroplast job with a M12 brass insert, which will allow for a 5/16 Whitworth plug that I'll make up. Seems very nice quality for £6.70 delivered.