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Roof 
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Part built GTM

Joined: Wed Apr 15, 2015 4:52 pm
Posts: 136
Location: Devon
GTM: Libra
Post Roof
Image

Image

Image

Image

1st try to upload pics

See if these work


Mon Jan 06, 2020 1:51 pm
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Part built GTM

Joined: Wed Apr 15, 2015 4:52 pm
Posts: 136
Location: Devon
GTM: Libra
Post Re: Roof
Roof for English sunny day
Seals not yet complete

Pete


Mon Jan 06, 2020 1:55 pm
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Part built GTM

Joined: Sat Mar 12, 2016 7:05 pm
Posts: 145
Post Re: Roof
Pete that's a nice neat job did you mould it yourself
Ian


Mon Jan 06, 2020 6:56 pm
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Part built GTM

Joined: Wed Apr 15, 2015 4:52 pm
Posts: 136
Location: Devon
GTM: Libra
Post Re: Roof
Used the original roof to make a mould


Mon Jan 06, 2020 8:32 pm
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Part built GTM

Joined: Sat Oct 22, 2016 12:41 am
Posts: 84
Location: Brisbane Australia
GTM: Spyder
Post Re: Roof
Did anyone ever do a hardtop for the Spyder?


Tue Jan 07, 2020 2:24 am
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Looking like a GTM

Joined: Wed Jan 23, 2008 11:31 am
Posts: 203
Location: Rowley Regis, West Midlands
GTM: Spyder
Post Re: Roof
Spider wrote:
Did anyone ever do a hardtop for the Spyder?


I know RDM started to develop one, they had full sized plug very near completion.
Not sure what happened to it, if it ever made it to Westfield?
Juls


Tue Jan 07, 2020 4:41 pm
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Ready for SVA

Joined: Mon Jul 13, 2015 6:32 pm
Posts: 498
GTM: Libra
Post Re: Roof
That looks brilliant Peter!

Like how you've done your windscreen as well.


Fri Jan 10, 2020 10:03 pm
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Part built GTM

Joined: Wed Apr 15, 2015 4:52 pm
Posts: 136
Location: Devon
GTM: Libra
Post Re: Roof
Windscreen has no edge seal at present.
After the car is sprayed this can be filled with polyurethane or left open.
No wind noise so option

Pete


Tue Jan 14, 2020 3:39 pm
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Part built GTM

Joined: Sat Oct 22, 2016 12:41 am
Posts: 84
Location: Brisbane Australia
GTM: Spyder
Post Re: Roof
Can the join between the two halves slide? I am thinking about torsional rigidity of the car and whether the roof can make it stiffer. The four corner fixtures would need to be solid. Would be interesting to jack up one corner of the car and look for movement.


Thu Jan 16, 2020 4:33 am
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Part built GTM

Joined: Wed Apr 15, 2015 4:52 pm
Posts: 136
Location: Devon
GTM: Libra
Post Re: Roof
I would be extremely worried if the original roof was part of the stiffness.
Try it - easy to bend a thin piece of GRP with no core


Mon Jan 20, 2020 7:34 pm
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Part built GTM

Joined: Sat Oct 22, 2016 12:41 am
Posts: 84
Location: Brisbane Australia
GTM: Spyder
Post Re: Roof
Sure. I was just musing as to whether the roof insert could be (re)designed to usefully increase the stiffness.

Probably moot since the Libra and Spyder have excellent torsional stiffness in the first place.


Tue Jan 21, 2020 6:10 am
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Part built GTM

Joined: Wed Apr 15, 2015 4:52 pm
Posts: 136
Location: Devon
GTM: Libra
Post Re: Roof
A bonded in panel with thick foam core would do that.
Big boxes around the opening however are very stiff
Only for Racing?

For me wind in hair is more important

Pete


Tue Jan 21, 2020 9:03 am
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