[RogerM]

As promised here is the chart comparing all the springs from the different manufactures.
The measurements where taken using an automated spring tester I have at work.
The method was to start with the spring unloaded, upon reaching a small load to guarentee conpression on the spring a further small compressive travel was applied. From that point the measurements were zero'd and all springs measured over a compression of 20mm. The system calculated the load/ displacement to give lb/" (chosen as most manufactures use that) and also checked that the R^2 value for the line was such that the compression had been linear.

The AE black rear spring seems to have mis-measured but I'll remeasure that, most likely my fault when I positioned the spring in the fixturing.

There are also some slightly strange measurements but this could be due to all my Losi springs being very old and "well used". Again I will recheck those when I get back to work in the new year.

Ok, there are some missing from and if anybody has some they would be willing to lend me then I'm more than happy to measure them and put them on the chart!!!!!

Kyosho and Acadamey runners I would also like to measure your springs and add those.

You can never have too much info!!!