bxhunt Posted May 19, 2020 Share Posted May 19, 2020 I need to replace the springs on my De Dion HPC which has wide track front suspension. All up weight including fuel and me is 615 kilograms and weight distribution is 52% rear/48% front with equally weighted diagonals. I'm running Toyo Proxes R888R on 13" wheels. Mostly road use and some track day.I know that there are theoretical formulae for calculating spring rates but I would be very interested in practical experience and any information on what contributors find works best for them if anyone is willing to share it.Many thanks,Barry Link to comment Share on other sites More sharing options...
Simon.Rogers Posted June 2, 2020 Share Posted June 2, 2020 Hi Barry275 front and 140 rear - maybe 150 if two up more often than not. Link to comment Share on other sites More sharing options...
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