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Making leaf springs

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Bob Perkins14/01/2020 12:53:27
249 forum posts
60 photos

Does anybody know if there are any articles on making leaf springs in the Model Engineer archives?



Bazyle14/01/2020 13:25:42
6297 forum posts
222 photos

I recall something, but it might have been in EIM 25 years ago when Doug Hewson? was doing 5in waggon articles. The main interest was how to decide how many tufnol leaves to put in to weaken it for scale performance.

duncan webster15/01/2020 13:17:26
3928 forum posts
61 photos

Tubal Cain did something many moons ago in ME. He also did a book Spring Design and Manufacture, part of Workshop Practice series **LINK**

norm norton15/01/2020 14:22:16
183 forum posts
9 photos

Hewson discussed the springs for a Britannia in ME210/4453p526.

There is something about weights and adhesion theory in ME211/4470p808

The issues are using the right steel in its tempered state, then hardening and tempering for springs. Then deciding from the model weight what the correct loading is per axle, and how much compliance (spring rate) is best, and measuring the deflection obtained (ideally in a test jig). Because 100% tempered steel springs are often too firm for an application, there are options of substituting some leaves in Tufnol, using bronze instead, or machining slots in the (soft) steel leaves.

I don't think I have seen an article attempt to address all of this. But if you search the Model Engineer Clearing House Forum (best to do this through google 'leaf spring' ) the subject has been well discussed in recent years.


edits - killing smilies !!

Edited By norm norton on 15/01/2020 14:28:53

Edited By norm norton on 15/01/2020 14:29:21

Edited By norm norton on 15/01/2020 14:30:21

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