One for Clive at Zertec?
Discussion
Clive, Just thinking at the weekend about the clear screen on the Chimaera roof. Now I do like a bit of spirited roof off motoring in the winter, but often don't get the roof right down as when it's really cold the rear screen gets really stiff(!). Mine is in perfect condition except for a small crease directly in line with the ally strut, often I go taga to avoid anymore creasing/tears.
I was wondering if there was a design for the plastic to fold neatly thus avoiding the aforemention fears. I realise this would mean the screen would have perhaps visible fold lines but I wouldn't mind that if it meant the rest of the screen was unmarked.
Have you ever thought of it or is there someone out there that already does it?
Or is it just a really sh1te idea?
Jon, must disagree! I find with the targa up I get more wind buffetting, perhaps it has something do do with driver/passenger height, but I was surprised to say the least. Th eother thing I found extraordinary was how little disturbance there was with roof full down and windows down, I expected to get my hear ripped off but it was ok (although not tried at high speed). All in all I think the roof works fantastically however you have it, it's just the creases in the screen that let it down.
quote:
I've never tried driving "targa" style. I wasn't confident that the back wouldn't be like a parachute. Does it work okay? Is it noisey or windy? Does it cause lots of drag? Or is it a glorious, new-labour styley "third way" of motoring??
We do the Targa thing regularly. It is a LOT less windy and cold when the weather is clear but cold as on a nice winter day.
Can't agree about the noise though...on our Chim it seems to create quite a din...but who cares...
Its funny you should say that. As a lad I used to go out with my Dad in his 400SE and it was certainly far noisier and more windy in targa mode than full down.
However, in my 97R Chimaera, with me being 5'8" and my partner about 5'5", we find that the noise level is certainly no worse in targa than hood-down, and there is certainly less wind & buffetting.
As you say, its probably a height thing.
Regards
Short-arse Jon
However, in my 97R Chimaera, with me being 5'8" and my partner about 5'5", we find that the noise level is certainly no worse in targa than hood-down, and there is certainly less wind & buffetting.
As you say, its probably a height thing.
Regards
Short-arse Jon
quote:
Its funny you should say that. As a lad I used to go out with my Dad in his 400SE and it was certainly far noisier and more windy in targa mode than full down.
However, in my 97R Chimaera, with me being 5'8" and my partner about 5'5", we find that the noise level is certainly no worse in targa than hood-down, and there is certainly less wind & buffetting.
As you say, its probably a height thing.
Regards
Short-arse Jon
It is all about the rake of the windscreen....
Clive Reed
Zertec Limited
info@zertec.co.uk
www.zertec.co.uk
quote:
Its funny you should say that. As a lad I used to go out with my Dad in his 400SE and it was certainly far noisier and more windy in targa mode than full down.
However, in my 97R Chimaera, with me being 5'8" and my partner about 5'5", we find that the noise level is certainly no worse in targa than hood-down, and there is certainly less wind & buffetting.
As you say, its probably a height thing.
Regards
Short-arse Jon
It is all about the rake of the windscreen....
Clive Reed
Zertec Limited
info@zertec.co.uk
www.zertec.co.uk
So, Clive, fancy producing one? A lower cost solution might be to take an existing replacement roof panel and cut a big hole in it and put in a big perspex panel instead, thus neatly side-stepping the problem of shaping it to fit. Or if this weakens the roof panel too much, then maybe two panels with a T-bar down the middle. I'd imagine it would need to be perspex as glass would probably make it too heavy to get on and off.
Does this sound feasible?
Does this sound feasible?
quote:
So, Clive, fancy producing one? A lower cost solution might be to take an existing replacement roof panel and cut a big hole in it and put in a big perspex panel instead, thus neatly side-stepping the problem of shaping it to fit. Or if this weakens the roof panel too much, then maybe two panels with a T-bar down the middle. I'd imagine it would need to be perspex as glass would probably make it too heavy to get on and off.
Does this sound feasible?
Polycarbonate is the thing
Clive Reed
Zertec Limited
info@zertec.co.uk
www.zertec.co.uk
One of the options we will offer for the Cerbera sunroof is polycarbonate. We will learn from that experience what we can and can't do with the stuff. I could then consider integrating a large panel into a GRP roof panel with the GRP edges painted (black or hood colour). We will be able to blend these in easier on the hardtops.
Polycarbonate can have many protective coatings applied such as scratch-resistance, uv-protection, tinting, etc. It is also possible to include heater elements (obviously for the rear screen). It is however, bloody expensive. I estimate that the rear screen for the Griffith fastback will cost 400-500 pounds (that's cost, not retail).
Clive Reed
Zertec Limited
info@zertec.co.uk
www.zertec.co.uk
Edited by zertec on Tuesday 13th November 09:38
Polycarbonate can have many protective coatings applied such as scratch-resistance, uv-protection, tinting, etc. It is also possible to include heater elements (obviously for the rear screen). It is however, bloody expensive. I estimate that the rear screen for the Griffith fastback will cost 400-500 pounds (that's cost, not retail).
Clive Reed
Zertec Limited
info@zertec.co.uk
www.zertec.co.uk
Edited by zertec on Tuesday 13th November 09:38
quote:
Clive, Just thinking at the weekend about the clear screen on the Chimaera roof. Now I do like a bit of spirited roof off motoring in the winter, but often don't get the roof right down as when it's really cold the rear screen gets really stiff(!). Mine is in perfect condition except for a small crease directly in line with the ally strut, often I go taga to avoid anymore creasing/tears.
I was wondering if there was a design for the plastic to fold neatly thus avoiding the aforemention fears. I realise this would mean the screen would have perhaps visible fold lines but I wouldn't mind that if it meant the rest of the screen was unmarked.
Have you ever thought of it or is there someone out there that already does it?
Or is it just a really sh1te idea?
Could create a zip-out rear screen that would be able to drop flat down the rear bulkhead. this wouldbe better...
Clive Reed
Zertec Limited
info@zertec.co.uk
www.zertec.co.uk
quote:
Could create a zip-out rear screen that would be able to drop flat down the rear bulkhead. this wouldbe better...
Clive Reed
Zertec Limited
info@zertec.co.uk
www.zertec.co.uk
Could a glass/polycarb one be used (possibly including a heating element) with some sort of 'zipping' mechanism?
I guess there is not enough room for a solid rear window
Sparks
Edited by Sparks on Wednesday 14th November 13:27
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