Big bore spring rates??

[ste_lazzaro]

Hi everybody!
Surely many of you already went through this..
Is there any sort of spring rate table for the TeamC / Ansmann big bore springs?
I would like to translate the "soft", "medium" and "hard" rates into numbers..
Please help!

[Clive Loynes]

Does this make any sense?

http://www.rctech.net/forum/electric...vo-thread.html

[ste_lazzaro]

Yes it does!
Thanks mate!

[Clive Loynes]

Originally Posted by ste_lazzaro

Yes it does!
Thanks mate!

You're welcome.

You can get the missing spring by measurement so long as you have a few essentials in your kitchen and workshop.

An electronic kitchen scale, two piles of junk of equal height. two pieces of material of known thickness, a stiff beam (I used a spirit level) and a piece of plate material, such as an old carbon shock tower to stand the spring on.

You just lay the old shock tower on the scales and stand the spring on it. Then zero the scales to take away the weight of those parts.
Put your two piles of stuff either side of the scales and compress the spring with the beam until the beam is pressed onto the two piles of stuff.
Take that reading and then repeat the exercise with the two items of known thickness added to the two piles. That will give you a second reading.

The spring rate is the difference between the two readings divided by the known thickness of the pit of stuff that you added to the piles.

So long as your don't overload the scales it shouldn't matter at what compression you take the springs to but safety goggles would be a good idea if you are compressing them beyond a few mm.

The two items of known thickness only need to be about 3mm thick, just so long as you know their true thickness.