Fnord wrote:Every time I post this I have to go search for my posts containing the word "pancake" because I can never find the page it's on
But yeah, springs are bad, mmkay? In terms of practical hybrid bumpers, they rate slightly above small woodland creatures.
You know how this forum has a thing about nagging people for using the right chamber material for the right pressure.
Somewhere I imagine there is a forum which will do the same thing if you ask if *random spring* will be suitable for a hybrid bumper.
The answer of "How long is a length of string" would be the first suitable answer.
Springs have to be specced for the job just like anything else.
That one for example has been way over compressed. It should have been able to absorb the bumpers energy before the coils were compacted and crushed.
Multiple springs or more complex springs can be designed to vary how much resistance the bumper meets along its travel.
For example a "light" pressure holding the piston closed but after a certain distance it meets considerably more resistance while still not crushing any coils. A combo example would be a spring plus a foam bumper with the spring providing pre-firing resistance and the foam acting as the final stage of absorbing the energy from the piston.
The space for the spring also needs to be designed correctly so that it is free to move and will provide the right compression for the spring to provide the right force.
However, it's far cheaper and easier to wodge in a few inches of closed cell foam, call it a day and replace when the foam is crushed to a pancake.
