Lotus Elan

Diameter of gear knob insert (s4/sprint) - help please

PostPost by: pabbage » Thu Jun 18, 2020 9:44 am

Hi everyone,

Could anyone tell me if an original gear selector insert on top of the gear knob is interchangeable with the newer wood gear knobs supplied by Paul Matty et al (which just have a lotus badge on top)?

Are they the same diameter or would the knob need work to make it fit?

I think our gear knob is beyond repair (at least to a level I would be happy with) but the top insert is salvageable and I'd like to transfer it over to a new knob.

Any ideas to thoughts?

Cheers,

Paul
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PostPost by: MarkDa » Thu Jun 18, 2020 10:30 am

My car picked up a gear pattern knob sometime before I got it 10 years old.
Still causes confusion if I have to let mechanics drive it because reverse is shown on wrong side!
I've got a newer lotus ball but I think the thread is too small - old doesn't want to come off to check though.
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PostPost by: gjz30075 » Thu Jun 18, 2020 11:57 am

The thread size on the gear stick is 5/16 x 24. You should be able to make any knob fit
that thread size.
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PostPost by: pabbage » Thu Jun 18, 2020 12:02 pm

sorry everyone - perhaps I've not explained properly.

I want to take the gear selector indicator from the top of the knob and put it on a new wood knob.

The new wood knobs don't have a selector plate on top they just have a lotus badge stuck in. I'd like to know if the two are interchangeable or whether work would need to be done to the knob before the old insert could be stuck in.
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PostPost by: gjz30075 » Thu Jun 18, 2020 12:36 pm

Ah, sorry, I misunderstood. Can you get Paul Matty to measure one?
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PostPost by: MarkDa » Thu Jun 18, 2020 1:06 pm

I too didn't read original post properly - sorry.
Last edited by MarkDa on Thu Jun 18, 2020 1:12 pm, edited 1 time in total.
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PostPost by: gjz30075 » Thu Jun 18, 2020 1:11 pm

The gear selector pattern on top of my round Sprint knob sits on a flat surface and measures
.55 inches in diameter. What knob do you have?
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PostPost by: pabbage » Thu Jun 18, 2020 7:22 pm

I've got an original sprint knob - with gear selector plate. I just wanted to see if the selector plate insert would simply transfer over to a newer knobs like those produced by Paul Matty and other lotus suppliers.

I can confirm its about .55inch - any one know how big the lotus emblem is on the replica knobs?
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PostPost by: MarkDa » Thu Jun 18, 2020 10:35 pm

I have a newer knob - ball c45mm diameter.
The emblem is well under 1/2" .
I'll do accurate measure and post picture on Friday.
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PostPost by: 1owner69Elan » Thu Jun 18, 2020 11:24 pm

Comparing my original shift pattern knob and my replacement knob, I measure the same emblem size (0.55"). But, I couldn't tell you where I got the replacement knob - so probably not that helpful.
IMG_5547.jpeg and


Also, the knobs are slightly different shapes. The original is "squashed" with a flatter top and bottom while the replacement is spherical - slightly flat on top to accept the emblem.
IMG_5548.jpeg and
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PostPost by: SENC » Thu Jun 18, 2020 11:38 pm

Paul - if you can find a friend with a lathe, they can modify a new knob from Matty or others to take that insert in a jiffy - or turn you one from scratch in not too much more.
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PostPost by: MarkDa » Fri Jun 19, 2020 8:35 am

As promised photos of my 'modern' knob - I'm afraid that I don't know the provenance as purchased secondhand.

Gear knob1.jpg and
Gear knob logo diameter



Gear knob2.jpg and
Gear knob diameter
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PostPost by: pabbage » Fri Jun 19, 2020 9:11 am

Thanks for all your input - really helpful. It doesn't look like a straight swap and it'll need some wood working to get just right.
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