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All About Guns What's your weapon of choice, and why? Discuss the beloved speargun here!

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Old 10-08-2019, 02:03 AM   #46
popgun pete
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Re: linking rubbers together for more speed?

You should have learned this in elementary physics.
Force has units of MLT^-2 (F= m x a)
Length has units L
Velocity has units LT^-1
Acceleration has units LT^-2
Mass has units M
Momentum has units MLT^-1
Work or Energy has units ML^2T^-2

Power has units ML^2T^-3 eg. kg⋅m^2⋅s^−3

Superscripts don't paste to here, so have to use the ^ symbol.
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Old 10-08-2019, 02:39 AM   #47
Andersp90
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Re: linking rubbers together for more speed?

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Originally Posted by popgun pete View Post
You should have learned this in elementary
time erodes.

I will have a look.
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Old 10-08-2019, 04:30 AM   #48
gspearguns
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Re: linking rubbers together for more speed?

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Originally Posted by Andersp90 View Post
I think you are misunderstanding me. Total pull/strecth and force generated by the rubbers is the same. Only the speed is increased. And the bands wil be in series - not parallel.

Lets take your 120 cm band as an example.

You cut it into 4 pieces - each 30 cm long. You then glue them back together, so you have a 120 cm band.

Your "new" 120cm band consists of 4 smaller bands, each 30 cm long.

When you stretch the band 360%, each small band "inside" the big band, will also stretch 360%.

The force needed to load the gun will be the same, and the band/s will not develop more force. But they will contract twice as fast.

So the bands are not generating more force, but more effect/watts!



The bands will not generate more force, but more effect/watts! The bands are covering the same distance, but twice as fast.
wrong
I think you are completely on wrong way....
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Old 10-08-2019, 08:14 AM   #49
Marcus
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Re: linking rubbers together for more speed?

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Originally Posted by Andersp90 View Post
Im having a really hard time wrapping my head around why linking sarcomers will inscrease speed, but not rubbers.
Two entirely different materials with different properties.
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Old 10-08-2019, 12:38 PM   #50
musubi
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Re: linking rubbers together for more speed?

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Im not planning to use jewelry. Im planning to use a straight wishbone. I even provided you with a link to someone who might be able to make them. The picture what just to show what it would look like.

Here is the link again: http://www.huntechnology.it/en/ogivepiercing.aspx
I saw the original link, but it's for a wishbone and not for your application (straight piercing which doesn't exist). The picture you provided was a piercing item from a body jewelry source and you mentioned you're planning to try things out with recently ordered bands. I wasn't trying to be a smart ass, but rather tell you my opinion of the danger in trying to piece together what you're trying to do.

It doesn't seem like you're convinced regardless of what people are advising you, so test it yourself. Muscles are not rubber bands and you'll need more energy in the system to create more speed in the shaft.
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