Horsetan wrote:proto87stores wrote:.....Given the large number of P4 Steam Loco Builders in the Society, did anyone build a steam loco chassis with single independent sliding wire springs per wheel and do a running comparison with a similar model with the then new CSB's? ....
Well, there are Dave Bradwell chassis kits which are designed with this principle in mind, and he derived his design ideas from Chris Pendlenton, who has built a fair few of his own....
I have tried individual leaf springs on chassis for a "Duchess" and LWB Black 5, and the idea certainly has something going for it. My problem was that the springs had a irritating tendency to drop out of the (Exactoscale) grub screw adjusters at one end.
I thought that if I drilled a small hole in the top of the otherwise hollow grub screw, just big enough for the end of the spring to feed through and be retained by it, this would at least keep the spring in place when the chassis was "unloaded". That went well
I assumed that any such chassis would have (per each wheel bearing) 2 bent out mounting brackets with holes supporting the sliding wire at each end, with little right angle bends on the ends of the wire to stop it going all the way through the mountings.
Mounting holes and wire as per the CSB spreadsheet, for that particular loco.
Andy