Hi Hamish I apprechiate your thoughts on the H4. Did you know that the H4 chassis were only sprayed with black paint. None of them were properly protected. Keep an eye on the front suspension points for rust as well. I agree that the roof does produce it's challenges. Ian still working on Stuarts H4 at this time and have been able to signifficantly reduce water ingress. I still however want to try other solutions as well. A permanent roll cage would help, but the moulding around that area would be intresting to produce to stop all water ingress. Eddie
On 8 Oct, 20:33, "Hamish Freeman" <[email protected]> wrote: > Here are some "off the cuff" thoughts, which could be developed into > something more serious: > > Taking the concept of an H4 as the basis, make the roll bar a permanent > feature integral with the chassis and attach it also to a metal front screen > frame to form a permanent total roll cage to which the rear folding screen > could abut rather than to the targa top. This gives the basis for a far > more rigid / safer frame and the possibility of windproof seals for the > doors and windows. The frame could also be extended rearwards to take a tow > bar rather than having to bolt one to the boot floor. This approach would > allow the use of a smaller diameter tube along the sides (the current 6" > tubes are there to provide the requisite stiffness for an open car), which > would compensate for the extra weight elsewhere. This is starting to look > rather like a Cobra frame but would solve a lot of the safety problems > associated with passing IVA that I encountered with my Beauford! Seat belt > attachment is now required to be through at least 4 mm thick steel plate at > least 100 mm wide or 50 mm square tube - not that I could find it written > per se in the IVA manual but had to achieve to get a pass. What one might > term as an overkill to achieve an underkill? > > The front frame should be narrower to allow the unrestricted use of 15" > wheels without the need for wheel spacers and the inner front wing space > should be larger to avoid tyre rub when on full lock and full suspension > travel - yes there are roads that create this situation around here! > > Attachment of the fibreglass to the frame should be such that the sections > could be removed (to check for rust!!!) else treat the metal so that it does > not rust before bonding to the fibreglass, such as zinc plating, but not > powder coating, which in my experience always lets in water and promotes > rust under its surface. How well does fibreglass bond to zinc? > > Hamish > > > > ----- Original Message ----- > From: "Eddie" <[email protected]> > To: "Quantum Owners Group" <[email protected]> > Sent: Wednesday, October 06, 2010 10:54 PM > Subject: [Quantum Owners] What would you design. -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
