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Part 43: Tension Spring
|43||Tension spring, 2''||1906||-||15||9||4||N°7|
Chronological variationsThe one common variation on the tension spring was supplied in the clock kit 2 of the 1970's, where three tension springs were provided in a bronzed finish. Look carefully, as these are very similar and are only easy to spot when they're next to black ones. identify this
Variations and oddities
One other variation has been noticed, a tension spring with wire around 10-15% thicker than normal, and hence fewer turns per inch than a standard spring. It is not known where this version comes from – does anyone know? Is this a very early version? Standard springs are around 37 turns per inch, the one in the picture to the left has 33 turns per inch.
Dealer spare parts boxes
Many smaller parts were supplied in small paper envelopes, both before and immediately after the war. Helpfully for us, Meccano has printed the date code on this particular pack of six tension springs, you can see the code 1/1038/3 signifying October 1938, and a print run of 3000.
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Individual part numbersPart numbers for the parts on this page are as follows: Unique part numbers
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|Tension spring, 2''||06||.bk|
|Tension spring, 2'' bronzed (clock kit) ||72-77||.xx|
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Tony Brown (at 3:53pm, Sun 4th Apr, 10)
The tension spring with the thicker wire is almost certainly Marklin and not Meccano. The spring from a 1956 Marklin set is pretty much identical with the one illustrated.