Series 1 4.2 roadster gear knob original

Talk about the E-Type Series 1

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Simone
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#1 Series 1 4.2 roadster gear knob original

Post by Simone » Wed Sep 19, 2018 9:34 am

Hello everyone, does anybody know if the original gear knob for a Series 1 4.2 roadster should be the round metal one, or the leather one? There's an old leather one knocking about at home and I'm confused??? Any clarification gratefully received. Thanks, Si
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Heuer
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#2 Re: Series 1 4.2 roadster gear knob original

Post by Heuer » Wed Sep 19, 2018 10:07 am

The round plastic one was Factory Fit. The leather one is after market and not particularly nice - the Jaguar script is wrong.
David Jones
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Jeremy
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#3 Re: Series 1 4.2 roadster gear knob original

Post by Jeremy » Wed Sep 19, 2018 2:53 pm

Round plastic original is also v heavy... Perhaps it has a lead core? Deliberate, to give more momentum when changing gear. I love that attention to detail. Angus told me that people with lightweight aftermarket knobs have sometimes thought their box was faulty - so it clearly makes a difference to the throw.
Jeremy
1967 S1 4.2 FHC

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PeterCrespin
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#4 Re: Series 1 4.2 roadster gear knob original

Post by PeterCrespin » Wed Sep 19, 2018 8:47 pm

The OEM was the first thing lot of US Dealers took off to put a custom one on instead - usually that one or the type with check pattern badge. Heavy is good for change action and to damp high frequency buzzing if it occasionally resonated at speed. The world record must go to the 5-speed Getrag fistful they used on XJ and XJS from the mid 80s. It's like holding hands with a beef tomato.
1E75339 UberLynx D-Type; 1R27190 70 FHC; 1E78478; 79 S2 XJ12L; 97 XJ6L

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Simone
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#5 Re: Series 1 4.2 roadster gear knob original

Post by Simone » Fri Sep 21, 2018 9:03 am

Thank you for your insight everyone, I have tracked down the knob that 'apparently' came fitted to the car when it was bought by my father in '65 from dealership in Park Lane London (sorry about image quality). That's as far as he can remember, anyway. I have always had my doubts and as a child, remember more of a checkerboard pattern on leather knob as mentioned by Peter, but I'm not sure either.
I have bought a standard replacement from SNG Barratt for about £20, it looks like the original, but not sure how it will weigh.
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#6 Re: Series 1 4.2 roadster gear knob original

Post by Heuer » Fri Sep 21, 2018 9:54 am

The originals weigh about the same as a billiard ball. They are a heavy Bakelite type material with a brass core.
David Jones
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#7 Re: Series 1 4.2 roadster gear knob original

Post by Simone » Fri Sep 21, 2018 10:11 am

Thanks David

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abowie
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#8 Re: Series 1 4.2 roadster gear knob original

Post by abowie » Fri Sep 21, 2018 10:18 am

My knob is original, from 1965, and I'm very happy with it.
Andrew.
881824, 1E21538. 889457..oops
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H7OB
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#9 Re: Series 1 4.2 roadster gear knob original

Post by H7OB » Fri Sep 21, 2018 11:49 am

abowie wrote:
Fri Sep 21, 2018 10:18 am
My knob is original, from 1965, and I'm very happy with it.
Not sure whether youre wandering off topic or not?!

:scratchheadyellow: :lol:
Paul
'68 Series 1.5 2+2

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PeterCrespin
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#10 Re: Series 1 4.2 roadster gear knob original

Post by PeterCrespin » Fri Sep 21, 2018 5:09 pm

Heuer wrote:
Fri Sep 21, 2018 9:54 am
The originals weigh about the same as a billiard ball. They are a heavy Bakelite type material with a brass core.
I've had a lot through my hands with selling gearboxes and never seen a brass one. Not saying they don't exist but it'd be an odd choice for an inexpensive non-visible, non-corroding, non-electrical non-precision piece (whereas pot metal, steel or cast iron would not be). I did find something interesting though.
Image

These two (I usually have a couple more) are repro left and original right. The OEM is larger and weighs half a pound/8 oz, where the smaller one weighs 5 oz. To my surprise, however, the heavy OEM is pot metal (non-ferrous) whereas the repro is the magnetic one. I guess it's easier to CNC a mild steel sphere these days than to tool up for moulds? The difference in size and weight i s very notable in the hand. I'd expect that some who spend a decent chunk of cash to 'upgrade' from a wood or leather knob to a repro might be underwhelmed by the modest difference in gearchange feel. Just goes to show you should never throw old kit away until you're happy with the replacement.
1E75339 UberLynx D-Type; 1R27190 70 FHC; 1E78478; 79 S2 XJ12L; 97 XJ6L

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Heuer
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#11 Re: Series 1 4.2 roadster gear knob original

Post by Heuer » Fri Sep 21, 2018 6:30 pm

Ahh, I assumed the weight came from brass, never really bothered to check. On the other hand brass is non magnetic and I would have thought pot metal would not have that much weight. Interesting.
David Jones
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Durango2k
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#12 Re: Series 1 4.2 roadster gear knob original

Post by Durango2k » Fri Sep 21, 2018 9:08 pm

I have the wooden flag type one. Shall I worry? No, it‘s the cars own history, and if it worka, it‘s allowed to stay there. In fact on the ebay pics it was intact, when the car arrived it was missing, until I found it in pieces under the seats, so I could restore it „as new“.

Carsten
Jag E '66 S1 2+2, Citroen DS 23 Pallas iE, Citroen SM 3.0, Concept Centaur MK1, Citroen 11 BL '54, Sinclair C5, Velosolex

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PeterCrespin
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#13 Re: Series 1 4.2 roadster gear knob original

Post by PeterCrespin » Tue Sep 25, 2018 3:12 am

Heuer wrote:
Fri Sep 21, 2018 6:30 pm
Ahh, I assumed the weight came from brass, never really bothered to check. On the other hand brass is non magnetic and I would have thought pot metal would not have that much weight. Interesting.
Some of the zinc alloys are heavy. The weights on pool vacuums, for example.

Coincidentally , today I corresponded with the Amal people at Burlens, asking the weight of their 32mm pot metal carbs. which they said are 1100 g, apparently. The two ex-work BSA ones I have are nearly 70% lighter, made as never-sold-to-the-public magnesium versions:

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SRAnderson
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#14 Re: Series 1 4.2 roadster gear knob original

Post by SRAnderson » Tue Oct 02, 2018 1:23 am

Hello All

As far as I'm aware, an original shift knob measures approximately 1.655"ish in diameter, weighs approximately 8.1 oz and the core is non-metallic.

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Hope this helps.

Steve Anderson

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#15 Re: Series 1 4.2 roadster gear knob original

Post by PeterCrespin » Wed Oct 03, 2018 1:22 am

Non magnetic, rather than non-metallic, but yes, I agree with all parameters. I said 8 oz to round down - it was 8.1 oz same as yours.
1E75339 UberLynx D-Type; 1R27190 70 FHC; 1E78478; 79 S2 XJ12L; 97 XJ6L

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