GT style racer hard top
Discussion
I had been tinkering with the idea of a GT style removeable hardtop and flip front for a racing griff (as i just happened to have a CAT D griff to mess about with).
The reason for these would be mainly for accessibility to the engine and suspension etc, and the hardtop as an alternative perhaps to the standard targa, or incorporate the removeable panel as per a tuscan.
All comments good/bad readily accepted
The reason for these would be mainly for accessibility to the engine and suspension etc, and the hardtop as an alternative perhaps to the standard targa, or incorporate the removeable panel as per a tuscan.
All comments good/bad readily accepted
Geoff38 said:
you have just re-invented a T350 with rounded edges and a front that comes off , Your griff is perfectly good , just leave it alone......
concentrate on the existing project.
just trying to tie in with Graham's project here... concentrate on the existing project.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
no harm in multi-tasking when its only idea bashing
I quite like it but then I would.
Especially if its designed properly so it's removable and doesn't mark the body and doesn't leak.
If I'm honest our chim design is a little higher than id like but it's designed to clear an Msa spec roll cage and helmeted driver.
The difficult part of the design is going to be the hatch or glass that's why we went with the t350/sag hatch.
Another issue is what you do with the fuel filler.
We also plan a trim panel that fits behind the seats to give a shelf and boot cover
edited to drop pics in
Buck being made
First development lift.
You can get the t350/sag rear hatch in scratch resistant black edged polycarbonate which is a lot cheaper than an original glass hatch but not as nice and doesnt have the heater elements.
Especially if its designed properly so it's removable and doesn't mark the body and doesn't leak.
If I'm honest our chim design is a little higher than id like but it's designed to clear an Msa spec roll cage and helmeted driver.
The difficult part of the design is going to be the hatch or glass that's why we went with the t350/sag hatch.
Another issue is what you do with the fuel filler.
We also plan a trim panel that fits behind the seats to give a shelf and boot cover
edited to drop pics in
Buck being made
First development lift.
You can get the t350/sag rear hatch in scratch resistant black edged polycarbonate which is a lot cheaper than an original glass hatch but not as nice and doesnt have the heater elements.
Edited by Graham on Tuesday 6th November 10:56
Hi and regards from continent. NICE !
I must tell that the version of the third picture is relay nice. OK some like the GT-version too but more elegant is the third versin in my eyes. With the idea of the louvre in the front wings I made a flirt too not only as
optical design more in reason for one better fresh air flooding in this section.
What is your next step/planing ?
Regards
Gregor
I must tell that the version of the third picture is relay nice. OK some like the GT-version too but more elegant is the third versin in my eyes. With the idea of the louvre in the front wings I made a flirt too not only as
optical design more in reason for one better fresh air flooding in this section.
What is your next step/planing ?
Regards
Gregor
The next step would have to be some input please from the racer guys regarding rollcage shape and position etc, fuel tank and filler, (as Graham says).
The technical stuff has to be right before i can do any more cosmetic design on it.
If a road car, then i was thinking along the lines of a Sagaris style roll hoop bonded into the rear roof section and tuscan style mounting clamps for the centre roof panel.
Just at the idea stage really as have another project on the go right now. So its a good time to consider all the pro's and con's, technical specs, and just see if it is viable.
I know a lot of people will ask why bother trying to convert a convertable to a fixed roof?? Why not just go get a cerbera or sagaris shell to play with, which is fine but i am also looking at this idea from the point of view of making a convertable road car (great for sunny days etc) safer as a trackday car by incorporating a rollcage, and adding all year round weather protection.
Best regards,
Phil.
The technical stuff has to be right before i can do any more cosmetic design on it.
If a road car, then i was thinking along the lines of a Sagaris style roll hoop bonded into the rear roof section and tuscan style mounting clamps for the centre roof panel.
Just at the idea stage really as have another project on the go right now. So its a good time to consider all the pro's and con's, technical specs, and just see if it is viable.
I know a lot of people will ask why bother trying to convert a convertable to a fixed roof?? Why not just go get a cerbera or sagaris shell to play with, which is fine but i am also looking at this idea from the point of view of making a convertable road car (great for sunny days etc) safer as a trackday car by incorporating a rollcage, and adding all year round weather protection.
Best regards,
Phil.
I´m not a racer sorry that is not my world but how it´s look like the racer alltimes make a nice projection for street versions and this is my world.
The cerbera hardtop is a parallel project for chimaera. Some griffith owners want also an hardtop but the rear
sections are different by this cars. If you wish to realize this hardtop I think it would be possible to design
the tools so that the race and the street version based on one and split in production after this step.
Regards
Gregor
The cerbera hardtop is a parallel project for chimaera. Some griffith owners want also an hardtop but the rear
sections are different by this cars. If you wish to realize this hardtop I think it would be possible to design
the tools so that the race and the street version based on one and split in production after this step.
Regards
Gregor
Its mainly the rear hoop thats the problem as the msa specs state that the top of the cage must be 50mm above the top of your helmet.
that adds a lot of height, and often you need to use a different seat to get it lower.
If you look at a picture of a race tuscan you get the problem. the basic cage is what you would probably get in a road car, but the extra hoop shows how much higher you need to be for msa spec, and msa dont like those extra hoops unless homologated. makes it a pta to fit a roof on a tuscan !!!
tuscan showing extra hoop
chim with msa cage
chim with non msa rear hoop ( rollcentre)
that adds a lot of height, and often you need to use a different seat to get it lower.
If you look at a picture of a race tuscan you get the problem. the basic cage is what you would probably get in a road car, but the extra hoop shows how much higher you need to be for msa spec, and msa dont like those extra hoops unless homologated. makes it a pta to fit a roof on a tuscan !!!
tuscan showing extra hoop
chim with msa cage
chim with non msa rear hoop ( rollcentre)
my250gt said:
Question, how does the rollcage in a sagaris differ from the tuscan one? how does it get the clearance.
the road sagaris cage isnt msaif you mean the sag racers that are all tuscan challenge cars underneath. The sag racer cage is very different and higher, but still height issues meaning you need a very low seat. On a couple of the sag racers my head still hits the roof.. which means its above the cage
they must have shorter drivers Im 6 ft.
yajeed said:
To me it just looks like a t350c copy, albeit not as pretty.
The Griff is a classic shape and doubt the original design from the very talented factory guys can be easily improved upon.
I'd leave it be...
The beauty of a hardtop is that if you like it great bolt one on, if you dont either dont bolt one on in the first place or unbolt it.The Griff is a classic shape and doubt the original design from the very talented factory guys can be easily improved upon.
I'd leave it be...
unlike headlight and other conversions no cutting and shutting is required.
http://www.therollcagepeople.com/gallerycustomerst...
So although this one looks the part, will it not pass MSA graham, so cannot be used for a race car?
So although this one looks the part, will it not pass MSA graham, so cannot be used for a race car?
my250gt said:
http://www.therollcagepeople.com/gallerycustomerst...
So although this one looks the part, will it not pass MSA graham, so cannot be used for a race car?
Yes it does. that car and cage was used in hill sprint, and Andy Race' Tuscan Challenge race Griff has the same identical cage from them. However andy's had a seperate bolt on hoop cos of his height, he then later lowered the seat/floor pan so he didn't have to use the extra hoop. If you are not 6'2'' plus you can get away without the add on hoop which mean you can get the roof on with the cage in. So although this one looks the part, will it not pass MSA graham, so cannot be used for a race car?
Edited by Bluebottle on Wednesday 7th November 14:47
Edited by Bluebottle on Wednesday 7th November 14:49
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