When we talk about springer front forks, there's always the question about what
springs. Yeah we can use valve springs off cylinder heads or go to the hardware
store and find some cadnium plated things from their assortment to build with.
Neat forks hugh ?
But the springs on these double acting springer forks will likely be "compression" springs
which have space between the coils.
Check this link out which explains coil springs.
Compression Spring Calculator - Engineers Edge
This link is to a supplier who can make custom stuff.
W.B. Jones Spring Company:springs manufacturer, coil, compression, torsion, extension springs
Look at springer forks like the Monark bicycle forks which use tapered ends and some
others where the coil spring has somewhat a barrel profile. The springs will be part of the eye
appeal and a focus area to the look of the forkset. Consider this when selecting your springs
expecially if you are considering a Boardtrack or Vintage build. But remember whether you use
chromium plated springs or painted ones, they will be a center of focus with those checking
your bike out. (judges at contest events too)
