Bonnet gas strut length

Talk about the E-Type Series 2

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Stevejaguar
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#1 Bonnet gas strut length

Post by Stevejaguar » Wed May 11, 2022 6:22 pm

Hi can anyone tell me the extended length of the bonnet gas strut please?
I suspect mine is not correct at 20" fully extended.
Is there a modern equivalent or do I need to get one from one of the regulars?
Thanks
Steve

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Gfhug
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#2 Re: Bonnet gas strut length

Post by Gfhug » Wed May 11, 2022 7:22 pm

Do you have the end fittings? If so you could try from SGS Engineering:
NitroLift GS8-18-200-250 Fixed Force Gas Strut. This is slightly longer than the one from the usual giving a greater angle of opening without the bumper over riders hitting the ground. The end fittings from SGS aren’t correct so you wouldn’t add any to your order.

Geoff
S2 FHC Light Blue
S2 OTS LHD - RHD full restoration

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abowie
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#3 Re: Bonnet gas strut length

Post by abowie » Wed May 11, 2022 11:14 pm

Geoff is correct and a bit more opening is very helpful.

When using a longer strut make sure that you stay way away from the balance point of the bonnet. So there is still plenty of force wanting to close the bonnet.

In different circumstances I had a bonnet get away from me and drop fully forward. This wrecked the bonnet and nearly pulled the car I was working on off the hoist on top of me. Terrifying.
Andrew.
881824, 1E21538. 889457. 1961 3.4l Mk2. 1975 XJS.
http://www.projectetype.com/index.php/the-blog.html
Adelaide, Australia

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Gfhug
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#4 Re: Bonnet gas strut length

Post by Gfhug » Thu May 12, 2022 8:31 am

Andrew, a very valid point. Also the strength of the strut from the usual is shown as 480N, I went a bit stronger but not too much or it will also tend to throw the bonnet strongly forward at the top of the stroke.

Geoff
S2 FHC Light Blue
S2 OTS LHD - RHD full restoration

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nefematic
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#5 Re: Bonnet gas strut length

Post by nefematic » Sat May 14, 2022 7:59 am

On my 1970 OTS it‘s max is 478mm (18“3/4).

Image

Martin
Martin Scherz
Late S2 1970 OTS US LHD

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Stevejaguar
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#6 Re: Bonnet gas strut length

Post by Stevejaguar » Sun May 15, 2022 6:59 pm

Thanks Martin. Mine is just about the same dlmensions as your drawing. My car is a Series 1 2+2 but the gas strut has been fitted when a series 2 bonnet was fitted sometime in the '80s. It works OK.
Steve

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Stevejaguar
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#7 Re: Bonnet gas strut length

Post by Stevejaguar » Sun May 15, 2022 7:02 pm

Thanks Martin. Mine is just about the same dlmensions as your drawing. My car is a Series 1 2+2 but the gas strut has been fitted when a series 2 bonnet was fitted sometime in the '80s. It works OK.
Steve

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