Belt position on scabbards 1050-1380

CORRECT POSITIONING OF BELTS ON MEDIEVAL SCABBARD: (1050-1380) of the particular style showed on examples below.

One of the most common mistakes about making modern scabbards I see, is completely incorrect placement of both belts on scabbard. Every preserved original example shows correct belting position. At the same time, almost every depiction in medieval art also explains how it should be placed on scabbard. However, for unknown reason, many modern scabbards repeatedly shows it on wrong height...

Let me explain:
First thing: The upper belt (wrapping) should be placed just under the scabbard`s collar / slot.
The reason is simple:
If it will be placed lower, then the sword will not be stable, especially the longsword, because you cannot place the suspension too close to the balance point of the sword. That`s why they originally always make it as high as they could, also to keep the sword under a slight angle to the ground in a stable position. Also, that`s why the lower belt is placed lower.
If you place the upper too low and closer to the balance point of the sword, then it begin to swing and follow the balance when walking / running / horse riding. This can be uncomfortable and cause the sword to come loose, moving and slide from the scabbard in time.
Of course the bottom belt will keep it more or less on its place depending on the blade length, but the whole thing will be simply not historical.

Second thing: the lower belt. The modern problem is again with placing it sometimes much too low, even very close to the scabbard`s center area. I could repeat all reasons from above again. But we can simply check and understand medieval examples, again.

Supplement:
The above remarks refer to the specific style of strapping shown on the examples. Other styles of belting can be found at different levels.

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Correct positioning of belts in this 13th century belting style, is not a matter of individual style or custom choice, etc.
When you make a medieval scabbard, we should follow original examples and understand the reason. Especially when we have plenty of them and we can easy study and find out how it should be done.
Next reason to make it right, is for sure correct, safe and convenient use of old and proven solutions.