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Roll over bar and hood issues


PeaTear

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Does anyone here have a roll over bar fitted in their spitfire?  I've just finished tidying up the hood frame and discovering the frame is hitting off the roll over bar and preventing me from properly folding it down. Have I rebuilt my frame incorrectly or are the 2 parts incompatible?

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I have one, very much like yours, on my mkIV spitfire. However, I did add a diagonal....

When I fitted mine I could see it was all a bit tight, so used a 5 tonne ratchet strap to pull the legs together a bit. It means the hood frame hits the bar but when down low enough. 

It is possible to get a "stepped" type rollbar, not quite as strong, but certainly better than no rollbar.

(and as somebody who has rolled a spitfire , purely down to bad luck, diesel spill on a road, I would certainly make the effort to get the bar in there!)

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Personally I don't like roll over bars - I get the reason for having one and have no issues with anyone fitting one (Why would I?) but they aren't for me. Yes I could roll the car - but its a risk I'll take - I don't drive that fast on the road or race mine on track - If I did, then that is a totally different kettle of fish! 

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I've sourced a second hand Saftey Devices bar for the Spitfire, my plan is to have a diagonal brace welded in and then fit it when we do events like European road trips etc. just for a bit of extra piece of mind. For general everyday pottering around on UK roads I don't think I'll bother.

 

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I've always advocated a roll-over bar for Spits.  A roll is unusual, but the consequences without are dire.

The MSA criterion is that the lower edge of the bar should be more than 50mm from your helmet.    You could apply this ( and add a safety margin) for your probably unhelmeted head in your events, consider chopping off the legs slightly and rewelding the footplates back on.

May I remind you, in cade your roll bar came without.   There should be backing plates under the floor, to spread the load under the foot plates.   See the MSA Yearbook, Section K Safety. For details.   Worth reading the roll cage (ROPS - Roll Over Protection System) section;   the MSA had more experience than most in safeguarding the driver!

John

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What I found slightly odd when I was shopping around was that "Protection & Performance" in Lancashire could fabricate and fit a roll over bar with diagonal and a horizontal bar for belts etc. to a custom design for about the same money that Rimmers would sell me a new Safety Devices bar. You'd have thought that customer work fitted to the car would have been much more!

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P&P are specialist, custom ROPS makers and fitters.   You won't get better!   They do work to expedition and military specs.

No doubt they have a standard design available for Spitfires, and many other marques, but will make you one to fit if there are discrepancies.   Rimmes and SD will have a solar design, but without the flexibility.   

P&PS senior technician is on holiday right now.     Try them in a few weeks, if you need anything special.

John

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That was a fun couple of hours. There was so much rust and underseal on the nuts and bolts only 2 came off intact, a third sheared and the rest I drilled off. 

I don't think I will bother with the roll bar now

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