S3 roll over bar dimensions

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auyt
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S3 roll over bar dimensions

Hi all, I would like some assistance with the dimensions of the current S3 chassis roll bar. I could take a guess from the pictures however, to have some details of a factory one will assist.

if there is a link that would be great, if not the following will help.

I plan to have one made as the freight to the colonies for a factory one is prohibitive.

i only plan to use one for a road car,

What Diameter tube is the current road bar

what height are they from there mount base.

Lastly the angle from the vertical.

many thanks in advance.

Jonathan Kay
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Which style... might be easiest to link to the one you want in the Caterham parts website.

Jonathan

PS: There's a duplicate post. You can't delete that but you can change the contents and Subject so that all the responses come here.

auyt
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Good suggestion, however I will clarify the question to a standard Caterham bar, the reason is key issue is that Caterham no longer have a listing for the live axle cars, and redline website is only really an inquiry only site.

Life's too short to drive boring cars

Tazio
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Talk to Bruce or Phil at Arch Manufacturing, they would have made them...
Golf Juliet Tango
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As above - just call Arch Motors, speak to Bruce or Phil.

P.S. get one with a diagonal brace, an FIA version.

P.P.S. it isn't just the dimensions which count, the quality of the material is important too.

Stephen

Democratic dissent is not disloyalty, it is a positive civic duty

Golf Juliet Tango
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B.T.W. one issue you are likely to encounter is that the bars were made on a jig, not to dimensions on a drawing. Even today, I am given to understand, the present rollbars (ROPS) are made to match a master, not to engineering drawings. In this age of CAD and computer based analysis of structures and materials I find this astonishing.

Stephen

Democratic dissent is not disloyalty, it is a positive civic duty

Jonathan Kay
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I'm not sure what's happening here... I don't know what you mean by a "standard" bar. If you can show us a picture I think it's likely that someone who has one will go and measure it for you.

Jonathan

PS: Redline can also be contacted in other ways.

sforshaw
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The clue is in the first line ... current S3 chassis roll bar.

Lotus Seven Club AR Working Group

The register for all numbered limited-edition Caterhams ....... www.thecaterhamregister.net ...... www.instagram.com/thecaterhamregister

auyt
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I thought I had seen this and it was in Low flying.

https://www.lotus7.club/sites/default/files/images/users/4437/Rollover%20Bar%20Article%20-%20Lf%20Jan%202018.pdf

 

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Vintageant
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Like the OP, almost two years ago, I am trying to find the original/standard width and height of a roll bar on a 1963 S2.  I've read all the above comments. Intriguing! If anybody has one, can they please measure and post? And how far apart are the rear 35 degree (?) bars?

Jonathan Kay suggested posting a pic.  Like the attached.

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Have you spoken to Bruce at Arch.....?