Jesus-Ninja
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| posted on 27/11/08 at 07:56 AM |
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Roll hoop
Do you actually have to have one? Maybe I'm being blind, but I can't see any reference to it in the IVA! Are there specifications for
it's construction, size location, etc?
The reason I ask is that there may be an issue with visibility, so for the test I could raise the seat up, so that the arches fall out
of the plane of view, but then the roll hoop would be level with the top of the drivers (my!) head - less than ideal in a roll!
Suspension geometry tool here >>> http://www.locostbuilders.co.uk/viewthread.php?tid=81376
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speedyxjs
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| posted on 27/11/08 at 08:02 AM |
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Just SVA/IVA without it and put it on after 
How long can i resist the temptation to drop a V8 in?
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Jesus-Ninja
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| posted on 27/11/08 at 08:15 AM |
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quote:
Originally posted by speedyxjs
Just SVA/IVA without it and put it on after
Nice idea , but it's a structural part of the construction - ie it's welded in and is an intgral part of the chassis - it extends down
to the floor on each side, and the rear stays are tied into the suspension. See pics...
.JPG)
.JPG)
So..............
.... if the driver's head goes above this, is it an issue? If it could be SVA'd with no hoop at all, then presumably not, provided the
hoop itself doesn't pose any threat.
[Edited on 27/11/08 by Jesus-Ninja]
Suspension geometry tool here >>> http://www.locostbuilders.co.uk/viewthread.php?tid=81376
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russbost
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| posted on 27/11/08 at 08:31 AM |
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TTBOMK there is no requirement for a roll hoop at all for SVA & presumably will be similar for BIVA - I think you are worrying yourself
excessively about the view of the road ahead - there are plenty of both kit & mainstraeam cars where the front of the car intrudes into your
vision, depends on how you read the manual.
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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maartenromijn
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| posted on 27/11/08 at 08:32 AM |
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If you do not attach a safety harness to the hoop, it is cosmetical only. If you add some padding to prevent injury from head-on collission, I
don't see any problems with the hoop being too low. THE QUESTION IS: DO YOU WANT IT???
Even when you lower your seat a bit after the test, will there be enough visibility? Moreover, you can better have a hoop being a couple of inches
taller than the top of your racing helmet.
See this thread.
Your chassis looks  btw!
BLOG: http://thunderroad-super7.blogspot.com/
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Jesus-Ninja
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| posted on 27/11/08 at 08:44 AM |
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quote:
Originally posted by maartenromijn
If you do not attach a safety harness to the hoop, it is cosmetical only. If you add some padding to prevent injury from head-on collission, I
don't see any problems with the hoop being too low. THE QUESTION IS: DO YOU WANT IT???
Even when you lower your seat a bit after the test, will there be enough visibility? Moreover, you can better have a hoop being a couple of inches
taller than the top of your racing helmet.
See this thread.
Your chassis looks btw!
Yes, I definitely want the hoop!But of course, under normal conditions (ie after the test) I'd want it to be higher than the driver, which it is
with the seat in the current position.
Visibility is fine, IMHO, but reading the regs, my wheel arch will be in the field of vision on the passenger side.
here you can see the area that is in view: the top mount sticking through the bonnet, which will be covered by an arch.
.JPG)
Suspension geometry tool here >>> http://www.locostbuilders.co.uk/viewthread.php?tid=81376
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maartenromijn
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| posted on 27/11/08 at 08:57 AM |
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If you want to lower your seats after the test, I'd just tell IVA that the hoop is cosmetic. Do ad some padding.
Are you going to IVA it with or without body? Or will you put your head trough the sunroof when your seats are higher for the test?? 
BLOG: http://thunderroad-super7.blogspot.com/
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Jesus-Ninja
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| posted on 27/11/08 at 09:05 AM |
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quote:
Originally posted by maartenromijn
If you want to lower your seats after the test, I'd just tell IVA that the hoop is cosmetic. Do ad some padding.
Are you going to IVA it with or without body? Or will you put your head trough the sunroof when your seats are higher for the test??
LOL!
I will be testing it with no roof and no windscreen, just the rear hatch / engine cover.
But yeah, it could look a little odd. I remember a teacher of mine, Mr Brown, built a project car at the school. It was like a miniature mini, and
there was more of him above the car than inside it! He used to drive it into school too!
Suspension geometry tool here >>> http://www.locostbuilders.co.uk/viewthread.php?tid=81376
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