Moving the Vibration Node on the blade
Sept 2, 2022 11:08:26 GMT
Post by fraklouelmo on Sept 2, 2022 11:08:26 GMT
Hi all!
I've been doing Meyer's longsword for about 2 years now and have my own steel sword for about 4 months now. It's a Regenyei federschwert custom which is fairly long, both in the blade and the hilt. (I wanted to recreate the longsword dimensions as described by Vadi in that the longsword should reach up to your armpit.)
I have noticed that the blade's vibration node is further down from the tip than I would like. (This is relevant because impact on the vibration node means less energy wasted and recoil on the hilt vibration node, saving your wrists from having to work extra. This is also called the sweet cutting spot because it's where you get most cutting power without any energy recoiled.)
Here's me and my sword, with the points of interest.
Now, i hypothesized that a different weight on the pommel could affect the position of this, and wondered as to the relation with the pivot point on the blade. Perhaps by increasing or decreasing the pommel weight, I could affect these positions. Filling some weight off the pommel would move the Centre of Mass (CoM) up so that the blade is more top heavy (which I would happy with as I feel when I am winding that I could benefit with the CoM being closer to where the winding point is) and the pivot point would move closer to the tip. Would this also move the vibration node closer to the tip? Ofcourse I don't want to shave metal off the pommel without being sure!
So I decided to do an experiment. I figure if I increase the weight of the pommel I would move the PP and the BN closer to the hilt, then I could confirm if shaving weight off would move the BN and PP closer to the tip.
I duct tapped some weight to the pommel (the circle has a convenient little space to fill with coins) and checked the points. With extra weight, I found that the PP did move to the hilt a couple of centimetres, and the CoM move closer to the hilt by 1 cm. However, I could not eyeball a change in the vibration node position on the blade (and I start to wonder if I might inadvertently change the vibration node on the hilt which is just fine where it is now).
Does anyone have experience with vibration nodes and changing the pommel weight in an existing sword? Did I eyeball it wrong or does the pommel weight not affect vibration node position? IS there anything else that can be done short of cutting the tip shorter and rerounding the tip?
thanks in advance!
Frak
I've been doing Meyer's longsword for about 2 years now and have my own steel sword for about 4 months now. It's a Regenyei federschwert custom which is fairly long, both in the blade and the hilt. (I wanted to recreate the longsword dimensions as described by Vadi in that the longsword should reach up to your armpit.)
I have noticed that the blade's vibration node is further down from the tip than I would like. (This is relevant because impact on the vibration node means less energy wasted and recoil on the hilt vibration node, saving your wrists from having to work extra. This is also called the sweet cutting spot because it's where you get most cutting power without any energy recoiled.)
Here's me and my sword, with the points of interest.
Now, i hypothesized that a different weight on the pommel could affect the position of this, and wondered as to the relation with the pivot point on the blade. Perhaps by increasing or decreasing the pommel weight, I could affect these positions. Filling some weight off the pommel would move the Centre of Mass (CoM) up so that the blade is more top heavy (which I would happy with as I feel when I am winding that I could benefit with the CoM being closer to where the winding point is) and the pivot point would move closer to the tip. Would this also move the vibration node closer to the tip? Ofcourse I don't want to shave metal off the pommel without being sure!
So I decided to do an experiment. I figure if I increase the weight of the pommel I would move the PP and the BN closer to the hilt, then I could confirm if shaving weight off would move the BN and PP closer to the tip.
I duct tapped some weight to the pommel (the circle has a convenient little space to fill with coins) and checked the points. With extra weight, I found that the PP did move to the hilt a couple of centimetres, and the CoM move closer to the hilt by 1 cm. However, I could not eyeball a change in the vibration node position on the blade (and I start to wonder if I might inadvertently change the vibration node on the hilt which is just fine where it is now).
Does anyone have experience with vibration nodes and changing the pommel weight in an existing sword? Did I eyeball it wrong or does the pommel weight not affect vibration node position? IS there anything else that can be done short of cutting the tip shorter and rerounding the tip?
thanks in advance!
Frak