Lego Technic Shock Absorber Spring Rate Guide

[Doc_Brown]

Hey Everyone!

I had an idea to create a guide showing various shock absorbers being decompressed to help anyone trying to guess what springs to use on their Mocs if they know roughly what weight it will be.

I tired to press down on each spring at around 90% without bottoming out, to give an idea of the maximum weight each one can take.

All springs used are in very good condition, with the exception of the Pneumatic one which grinned a bit, but being almost 20 years old we'll let it off!

Anyways I hope this is useful, let me know if you have any suggestions or can give info on the last spring which I don't have.

Cheers.

[Rockbrick]

great work -I was wondering about this one - was it only available on the 8420 Motorbike?

Edited December 16, 2014 by Rockbrick

[Doc_Brown]

HAHA, I have a pic of it in the video, so if anyone has info on it please share, and I will add it.

[XAxles]

So, which one of these can I use to replicate the RockShox Boxxer fork?

[Doc_Brown]

So, which one of these can I use to replicate the RockShox Boxxer fork?

Well I'm not a bike expert, but I would recommend the large black or old dark grey one.

[Eraman]

Thanks the video. Can you make a pic about all springs with their numbers?

Edited December 16, 2014 by Eraman

[Doc_Brown]

Thanks the video. Can you make a pic about all springs with their numbers?

Thanks! Sure can, but will be tmr for me. :)

[Milan]

Thanks the video. Can you make a pic about all springs with their numbers?

A picture with springs, their numbers and their strength, please :)

[JGW3000]

Doc, great information and timely for some MOCs I am currently contemplating.

I am surprised that hard spring 6.5L, is nearly as effective as the extra hard spring 9.5L, . I read ~1100 on the first, and ~1200 grams on the second, downward weight loading on each. However, normal spring 6.5L, only had ~500 weight loading, which makes sense, I was playing around with these last night and can confirm qualitatively. Its nice to have hard numbers like this.

Edited December 16, 2014 by JGW3000

[5imon]

Very good work in all its simplicity!

It's a bit hard to read on small screens, but if I'm sitting at a bigger one, I'll certainly collect the values in a table to keep in my building yrea. This will come very handy.

[Blakbird]

I am surprised that hard spring 6.5L, is nearly as effective as the extra hard spring 9.5L, .

The 9.5L shock is not really stiffer (as you noticed), it just has more travel.

[weavil]

What about this?

http://news.lugnet.com/technic/?n=16651

[bonox]

does anyone have a source for alternative springs that fit the 6.5L units?

I have a huge collection of grey units with soft springs. It'd be nice to know of a supplier with hard spring equivalents I could substitute. Should be much cheaper than the going BL rate of about 2-3 bucks for a complete yellow assy.

Edited December 17, 2014 by Blakbird
: Removed hard to read subscript font.

[Doc_Brown]

UPDATE!!!!!

Added annotations to all the spring apart from the last one as I don't have any info on it as yet. :)

Hope that is helpful guys.

Any other thoughts or suggestions please let me know. Cheers!

does anyone have a source for alternative springs that fit the 6.5L units?

I have a huge collection of grey units with soft springs. It'd be nice to know of a supplier with hard spring equivalents I could substitute. Should be much cheaper than the going BL rate of about 2-3 bucks for a complete yellow assy.

Sorry I don't know any, but looks like your average double click pen might have a closly related spring that might work. Good luck!

What about this?

http://news.lugnet.c...echnic/?n=16651

Interesting I got some very different results especially 9.5L Black spring. :)

My guide is aimed at 90% compression as I don't believe you want bottomed out suspension.

One of the reasons I made this guide is so if you want to know what say the 6.5L hard spring is at 50%, you can pause on the video and see.

(I know its kinda hard to read the little screen but if I tilted the camera up I got heaps of reflections)