Caterham 6 speed gear lever thread!

[finmac]

are there two different threads on the gear lever? The older one a fair bit bigger than the new one?

[p.mole1]

I thought they were all 3/8 UNC  

[Wrightpayne]

My original kit with 5 speed had a converter for the plastic gear knob. I’ve used the same lever on a 6 speed box and the 6 speed ally knob screws straight on without the converter.

Ian

[finmac]

OK it seems there are three different possibilities: 

1. 3/8 UNC

​2. M12 with an adapter sleeve which when removed drops it to 3/8 UNC 

3. Lever is threaded M12, no adaptor, so you need an M12 threaded Knob

option 3 is by far the most awkward. That's what my car seems to have - annoyingly.

So looks like I need to source an M12 replacement gear knob

[Wrightpayne]

Or get a new gearstick.

black or white nylon might be the cheapest option.

Ian

[Golf Juliet Tango]

I thought they were all 3/8 UNC

Certainly not the case.

[blueyedbiker]

If it's 3/8 UNC it's identical to M10 and there's millions of M10 threaded knobs out there for not much money.

[blueyedbiker]

Again there's loads of M12 threaded knobs out there;

http://www.rosscastors.co.uk/50mm-ball-knob-with-an-m12-metal-moulded-thread.html?gclid=CjwKCAjw75HWBRAwEiwAdzefxJcX-3UkEJh1UkkHfu9eXefI7j8mLl8ZeMRER3-TjhiQc8ca3embBRoCs5oQAvD_BwE

 

[Jonathan Kay]

Have you confirmed the thread?

Previous discussion (with obligatory jokes).

Jonathan