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Aiden Cheese
DieHard
QLD
Soarer jzz30

Posts: 562
Reg: 09-2009

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Wednesday, June 16, 2010 - 02:28 pm, by:  Aiden Cheese (Chillpen)


Damian Ware wrote on Wednesday, June 16, 2010 - 09:08 am:


If you have seen a soarer under high cornering load you can see the torsional flex in the body.


Yeah, but not in the door, safety regulations force manufacturers to make the forces of the car to not be held by the DOOR but the CHASSIS. The "Safe T cells" and all that are based around those pillars.

Andrew McKellar wrote on Wednesday, June 16, 2010 - 08:03 am:

Leather straps or doors removed won't pass scrutineering.


That's about all you needed to say, but still doesn't mean you couldn't just make a mock-up bolt on perspex door right? use the hinge point bolt holes and the door lock bolt holes to hold on a mini-frame that weighs less than 5kgs instead of working backwards.


Damian Ware wrote on Wednesday, June 16, 2010 - 09:08 am:


Trying removing the doors and going around a corner under high load and see what happens.


Err... why, if there is any meaningful forces being applied, the easier test would be to try and open the door. if the door cant move then its got forces CRUSHING it into the body.

There is flex in the BODY AROUND THE DOOR.


Damian Ware wrote on Wednesday, June 16, 2010 - 09:08 am:


If you have seen a soarer under high cornering load you can see the torsional flex in the body.


Yup, but the strongest point in the body is the freaking frames around the doors.

Damian Ware wrote on Wednesday, June 16, 2010 - 09:08 am:



I have heard that with shagged hinges that in some cars under high cornering load they get wind noise as there is enough flex and movement to cause separation and the seals no longer seal.


Yup shagged hinges is when someone has leaned on the door causing the door hinges to bend downwards a bit and throw the alignment of the door off, the chassis twists and instead of the door starting off centred it starts off lower than centre near the door hinge. The chassis flexes a tiny bit and the seal separates because the DOOR ISN'T ALIGNED.

That has nothing to do with body rigidity at all.

Really if there was meaningful forces being applied for 20 years, EVERYONE'S door seals would be completely wrecked. No matter how small, that wear would have RUINED IT at the most common "pressure point"

stop just saying things. Your criticisms are based on NOTHING. It was a suggestion that you've taken a crusade against without having even a clue about what's happening. You've never driven the car without doors you have no firsthand experience, I'm not going to take my doors off. I was offering the suggestion to BEN as an alternative way of thinking.

The only criticsm that has any meaningful input here is what Andrew said. Which actually holds merit in the basis that it wouldn't be trackworthy.

Hence i offered another suggestion, which i stated before. Just make a mini frame and bolt on some perspex shaped in the door shape. You could even add the soarer door seal onto its edge if you wanted to remove any kind of rubbing caused by chassis flex.

Hrm, the only other thing that'd stop me from making a frame for a passenger door is fear of fire.. thinking about it without a quick release mechanism if you crash so badly that your driver door is stuck up against the wall then your other method of escape is pre-blocked. Ohwell it's getting much less interesting if you'd have to worry about that because then you'd have to engineer a way to bolt it in studs or something to fit in the holes and then a lever to pressure it and that way you can fit the lever to remove the pressure and kick out the door...

Damian Ware wrote on Wednesday, June 16, 2010 - 09:08 am:

*something about jacking up the car and watching chassis rigidity*


Amazingly I've never had a problem opening a door when doing this, there are next to no forces being applied through the door that would cause it to help the chassis not move.

I can't believe how much you're labouring onto this without bringing forwards any information that is meaningful.

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