Questions tagged [coil-spring]
12 questions
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How is energy in the hairspring restored in a mechanical watch?
I've read through the excellent guide to how mechanical watches work by Ciechanowski, but it leaves some questions unanswered.
The main spring of the watch, when it loses energy, can of course be re-wound using the watch's crown, and the guide above…
Eugene Osovetsky
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How to build an Adjustable Tension Spring?
Is there such a thing as an off-the-shelf adjustable tension spring? I've searched extensively without success.
The problem I'm trying to solve is as follows:
I have a tension spring hanging from a fixed point and I want to:
Achieve the same…
Milo
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How to calculate how much compression is needed for a spring to buckle
First off; School was many years ago and I know little of the mathematics behind all the physics and engineering stuff. So if you have an answer, please explain it like I'm 5?
The goal: I aim to be able to create a buckling spring switch (like the…
qwelyt
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1 answer
What's the name of a device to simulate an object jumping in the air?
I want to make a film of a puppet jumping in the air into the water of a lagoon. I am looking for a pad with a spring release timer that I can bury in the sand so it's out of sight from the camera, wait 10 seconds for example, and the spring or coil…
miguelmorin
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Are recoil operated crossbows/ballistae feasible?
This question is specifically about stationary or vehicle mounted crossbows, not man-portable ones
The projectile size would measure about 1.8 - 2 meters in length, so the crossbow would have corresponding proportions
The materials would be wood…
JED
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Help with linear rod drill press like design/materials
I am putting together a basic machine for “pad printing” extremely small and precise parts. The design is very much the same as most homemade drill presses and consists of linear rods, flanged bearings and compression springs, but in place of a…
Jalapeno Jack
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Overextending and cutting a coil spring
This is related to my recent question
Can I weaken a coil spring consisting of spring steel?. The answer here could create an additional answer there, but I do not expect that. The difference to that question is that this is about changes in the…
Volker Siegel
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How to calculate preload of fully compressed spring washer?
I'm planning to attach a 6mm countersink bolt to Finnish softwood plywood. I'm worried that the wood could gradually change due to for example moisture changes over time. Thus, I would like to add some mechanism for ensuring the bolt preload stays…
juhist
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What causes damage to my drone when falling down?
I am trying to design a landing gear system and I am stuck at whether I should use a spring as a kind of shock absorber in my landing gear. Currently, the scope of my project is only concerning about "hard landing"--which is just about the drone…
Faito Dayo
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Sizing a spring
I am attempting to 3D print my own Quad lock mount and require a spring. I've taken some measurements but don't know how to search for where I can buy more springs. Dimensions:
12mm height, 20mm OD. Thanks
flying_loaf_3
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Looking for a compression spring alternative with 10x lifespan
I'm working on a project where 100k spring cycles is gonna last a few months
Any recommendations on an alternative? I considered magnets but their sprigabilty isn't great (also, will they get demagnetize with constant repel forces?)
I'm working on a…
Simon
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How can I find stiffness of a steel coil spring used in dump trucks?
How can I find stiffness of a steel coil spring used in dump trucks?
Here is the data of the question.
Length of spring unloaded = 220mm
Outer Diameter = 27mm
Inner Diameter = 15mm
Wire Diameter = 6mm
Material is steel, G= 77.2 GPa
Spring must bear…
Ibrahim Omer
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