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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
4th May, 2017 at 09:59:33pm
Thinking of a f/g roof
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 2742 Posts Member #: 637 Post Whore Hertfordshire |
4th May, 2017 at 11:07:55pm
I'm sure you could find this in a old search.
My build thread..
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
4th May, 2017 at 11:21:48pm
iv had a search but cant find the weight that would be removed, i will try and work it out from the volume of metal removed, just need the weight of the f/g panel
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
5th May, 2017 at 06:46:07am
You would lose weight, and I'm sure it could be made stiff enough if bonded correctly.
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
5th May, 2017 at 07:30:18am
stiffness shouldnt be an issue as it has a multi point cage going in wich picks up front subby and rear beam, (its a race car for the road)
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4304 Posts Member #: 1321 Post Whore Wiltshire |
5th May, 2017 at 08:06:57am
I would estimate 5kg with glue and everything else. Someone did weigh it not to long ago. On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
5th May, 2017 at 08:28:28am
5KG saving or KG for the new panel and glue? |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
5th May, 2017 at 09:39:43am
A race car for the road, ok. The reason I ask is that if you wanted to use the car for actual motorsport, a GRP roof would not be eligable for lots of things (hillclimbing for a start).
Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 1030 Posts Member #: 1291 Post Whore Suffolk / Birmingham |
5th May, 2017 at 12:07:42pm
I think you will find you loose a fair bit on a carbon roof. I seem to remember somone saying 8kg.?. I'm not sure how fg compares. One thing that may sway you however, the roof is exactly where you want to be loosing weight, high up in the car! 5kg lost up there is going to make much more difference than 5kg lost down low as far as handling goes at least. |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
5th May, 2017 at 12:17:19pm
just done some maths, assuming its 1mm sheet with a density of 7.85g/cm3
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 1434 Posts Member #: 8466 Post Whore Mansfield |
5th May, 2017 at 12:24:32pm
4.8kg saving on my arc angel opt 3 carbon roof inc. tiger seal Class C 3rd Place Avon 2011 14.18 @101mph |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
5th May, 2017 at 12:30:13pm
sounds like a decent saving!
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 412 Posts Member #: 9766 Senior Member Warwickshire |
5th May, 2017 at 01:40:32pm
Both of my fg roofs distorted over time, my Curley carbon roofs been great for 5 years now.
Avon 2010 class c 3rd
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 6729 Posts Member #: 618 Post Whore Glasgow |
5th May, 2017 at 04:11:37pm
bit of chat on panel weights in this thread
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 3673 Posts Member #: 9300 Post Whore Quarry Bonk |
5th May, 2017 at 06:02:48pm
Last time i fitted an fg roof skin you lose no stiffness in the shell, as it's all around the roof seam which is still left in place. Still had a half cage though but unless you have one that ties to the shell on the pillars it makes no difference to shell stiffness, it's more of a safety margin if for some reason you end up on the roof, composites aren't going to hold up like steel does scraping across the ground. On 26th Jan, 2012 Tom Fenton said:
ring problems are down to wear or abuse but although annoying it isn't a show stopper On 5th Aug, 2014 madmk1 said:
Shit the bed! I had snapped the end of my shaft off!! 17.213 @ 71mph, 64bhp n/a (Old Engine) |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
5th May, 2017 at 08:19:45pm
cheers guys, insightful as ever looks like im getting a f/g roof then !
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 1767 Posts Member #: 9165 Previously josh4444 Australia, brisbane |
6th May, 2017 at 11:12:32am
mind blown on how heaven sheet metal is 9kg or so for a 1 meter square makes door skins/ doors a good option also? |
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 2974 Posts Member #: 10749 Post Whore lowestoft suffolk |
6th May, 2017 at 05:02:48pm
I too thought 'bollox' when someone told me how heavy a metal door skin was... but i brought ali skins chopped off the steel skin n they were right!! On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol NOTHING GETS PAST ME!! 
1/4 mile 14.7 @ 96mph 12psi boost Showdown class A 2nd place 18.6 @ 69mph |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
7th May, 2017 at 10:25:16am
Already got the f/g doors and plastic windows, just need the other windows .
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4304 Posts Member #: 1321 Post Whore Wiltshire |
7th May, 2017 at 11:17:12am
T45 cage? On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
7th May, 2017 at 04:34:57pm
Probably go cds as it only £630 Rather than 1300+ I think it's about a 10 kg difference between the 2 the t45 multipoint is about39kg
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2974 Posts Member #: 10749 Post Whore lowestoft suffolk |
7th May, 2017 at 08:10:37pm
Shoulda just gone full f/g silhouette! ;-p On 24th Oct, 2015 jonny f said:
Nothing gets past Dave lol NOTHING GETS PAST ME!!
1/4 mile 14.7 @ 96mph 12psi boost Showdown class A 2nd place 18.6 @ 69mph |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
7th May, 2017 at 11:29:00pm
I have a space frame in the garage but gave decided on a new shell |
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149 Posts Member #: 9991 Advanced Member lichfield ,staffordshire |
7th May, 2017 at 11:29:03pm
I have a space frame in the garage but gave decided on a new shell |
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 55 Posts Member #: 8837 Advanced Member Warwickshire. |
12th May, 2017 at 10:03:42am
I've got a Curley Carbon roof same as Rich that we got on the same order (5 years ago). Still looks as good as new & I saved 8.7kg, notably from the highest point on the car.
1976 Mini 1000 FWD R1 - 13.2@104
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