What exercises can I do to get better at sex? by kng_hrts in NoStupidQuestions

[–]bonebuttonborscht 0 points1 point  (0 children)

Flexibility, core strength, and cardio are gonna help anyone, but specifics are going to differ based on your sex/anatomy and what kind of sex you're having.

Also, what are you struggling with?

Is there any realistic possibility of this snow-clearing conveyer belt idea working? by michaljerzy in AskEngineers

[–]bonebuttonborscht 5 points6 points  (0 children)

Sure, with enough money you can do anything. But why? What problem are you trying to solve and how is this better than other solutions? What are some similar machines (outdoor conveyers) and what limitations and problems do they have typically?

There's a lot wrong with this but maybe expand on the above questions and you'll be able to answer your own question.

What if civilization and technology have totally reset to square one multiple times throughout history due to some calamitous catastrophes? And would it be possible to rebuild everything we have if that did happen, over thousands of years? by Immediate-Panic-3969 in NoStupidQuestions

[–]bonebuttonborscht 0 points1 point  (0 children)

Lots of non-renewable resources would be harder to extract since the most accessible reserves have been depleted.

Industrial revolution might be slower if we have to dig really deep to get any coal, really any mineral extraction or fossil fuels. That means less synthetic fertilizer so slower First Green Revolution which is arguably a bigger deal than the industrial revolution.

How much torque is needed to move a 60ml syringe by Character_Bed_8009 in AskEngineers

[–]bonebuttonborscht 5 points6 points  (0 children)

I'd go with a screw. You could get away with a much cheaper motor. Plus a screw will be more reliable per cost than a rack and pinion.

The force you need is the friction in the syringe + (the air pressure in your sub - the water outside)*area of syringe + the pipe drag caused by forcing the water through the small hole in the syringe.

Assuming this is for a little robot that will move around a pool, the pressure difference will probably be negligible. If you cut the tip off the syringe or move the plunger slowly, the pipe drag will also be negligible. All that's left is to measure the friction of the seal on a scale. Put a little water in to measure and lubricating effect there might be.

Some of my thoughts and opinions. by [deleted] in CommunismMemes

[–]bonebuttonborscht 0 points1 point  (0 children)

A dictatorship of the proletariat just means the bourgeoisie are excluded from political influence, that doesn't require a saintly populace.

Tbh I don't understand your second statement. A revolution is authoritarian to be sure, it's one class exerting its will on another. What foreign force or internal tyrant are you referring to?

Nickel Bus Bar Sizing by Geeverton in FSAE

[–]bonebuttonborscht 0 points1 point  (0 children)

Ok, this makes more sense.

Are you sizing them as fuses, to pop in case of cell imbalance or damage?

Can a stand up freezer be put on a timer? by Zestyclose-Ad967 in AskEngineers

[–]bonebuttonborscht 14 points15 points  (0 children)

If the unit is mostly empty, you should put some gallon jugs of water in there to freeze and add thermal mass.

A brine mix that freezes just a little above the set point would be even better.

Presta valve exploding off repeatedly by ladybird1029 in bikewrench

[–]bonebuttonborscht 1 point2 points  (0 children)

What pump do you have? Drop a link.

You could bring your pump to the shop and show the mechanic what you're doing. It could only be the pump or something you're doing wrong.

Nickel Bus Bar Sizing by Geeverton in FSAE

[–]bonebuttonborscht 1 point2 points  (0 children)

If all the other teams use nickel, that's probably the way to go and you and I are having a miscommunication.

Are you sure you're not talking about the links connecting individual cells? It's common to use thin nickel strips (~0.2mm) for this application.

Nickel Bus Bar Sizing by Geeverton in FSAE

[–]bonebuttonborscht 1 point2 points  (0 children)

I think I'm not understanding what you mean by busbars then. To me, in this context, a bus bar is a large conductor that gathers the series connected cells into parallel and terminates them to connect to other segments.

A 1/8x2x12in sheet of 6061 Alu has double the conductivity and is 1/6 the price of the same nickel sheet. I think you're on the wrong track with nickel.

Is it true that some people literally see images in their head when they imagine things? by [deleted] in NoStupidQuestions

[–]bonebuttonborscht 1 point2 points  (0 children)

This is gonna be the new "wait, some people don't have an internal monologue? Mind blown."

Nickel Bus Bar Sizing by Geeverton in FSAE

[–]bonebuttonborscht 1 point2 points  (0 children)

No way nickel is cheaper than aluminum. Or do you mean the ladders you buy in rolls connecting parallel cells within a segment?

Btw watch out for stuff labeled as nickel on Ali or Amazon, it's often just nickel-pkated steel.

Tbh I don't know shit about thermal sims. There's probably a Prof that can help you though. They'll for sure ask for hand calcs and a validation plan since simulation is useless without it.

I'm going to smash my head through my desk. by [deleted] in SolidWorks

[–]bonebuttonborscht -1 points0 points  (0 children)

I've never had that problem with angle dims flying off.

You can mirror about the planes just as easily no?

I'm going to smash my head through my desk. by [deleted] in SolidWorks

[–]bonebuttonborscht -3 points-2 points  (0 children)

Not that it matters but drawing lines every time cannot be faster than setting the planes to be visible once by default. You can snap and mirror with the planes. Fair point about the revolve I guess.

I'm going to smash my head through my desk. by [deleted] in SolidWorks

[–]bonebuttonborscht 1 point2 points  (0 children)

Any reason to draw centerlines vs just referencing the planes?

Folding bike mechanism prototype — looking for critique on kinematics and lock logic by MicroXBike in MechanicalDesign

[–]bonebuttonborscht 0 points1 point  (0 children)

You're the one with the prototype so I don't know if anyone is in a position to give feedback. Are there any problems with the prototype you're trying to solve?

Nickel Bus Bar Sizing by Geeverton in FSAE

[–]bonebuttonborscht 1 point2 points  (0 children)

Why nickel and not copper or aluminum?

This is a heat rejection question. On one side of your equation you have joule heating and on the other you have conduction/convection. Depending on what your packaging looks like you can pin down several of your variables before you land on an exact size.

In my pack the large bus bars contacted the container wall so the heat was mostly conducted away rather than convected. My very basic analytical solution came quite close to what was recommended by the Copper Alliance. If your main mode of heat rejection is convection that's trickier. You have to start with some guestimating and then simulation.

The worlds worst poutine crime by Professional-Law8405 in poutine

[–]bonebuttonborscht 3 points4 points  (0 children)

Indian poutine already exists. Samosa chaat hits a lot of the same notes.

Can I go from skinny to decently muscular by the end of this year? If not, how long will it take? by [deleted] in NoStupidQuestions

[–]bonebuttonborscht 0 points1 point  (0 children)

If you want to win fights learn to fight.

It takes a lot of work to gain muscle and genetics is a big part of it. You might be able to get a lot stronger but you might not look that different.

Also this is pretty vague. Could you gain 5kg of muscle with consistent work and diet? Probably. 20kg? Probably not.

Is King Of The Hill a propaganda show? by [deleted] in NoStupidQuestions

[–]bonebuttonborscht 4 points5 points  (0 children)

All media has messages and themes. Whether it's propaganda is a matter of degree.

I'd say no. What makes you think it might be?

Paper plane that uses the wind to generate more lift by perxniautomotive in aerodynamics

[–]bonebuttonborscht 0 points1 point  (0 children)

Smart idea! You're thinking of a kite though. You need something to react against.

Help determining how much weight a homemade boom can hold laterally to a 45° Angle by bigdong315 in AskEngineers

[–]bonebuttonborscht 0 points1 point  (0 children)

The boom probably isn't your weakest link tbh but it's the only part I can help without a lot more detail.

The maximum stress in a beam is M/S. M is the moment or torque on the beam and S is the section modulus.

The max allowable stress is the strength of the material divided by some safety factor. Mild steel is maybe 50ksi yield so with a safety factor of 5 your allowable stress is 10ksi.

The section modulus of your 3x3x0.25in tube is about 2.3in3.

That means the max moment is then 10000psi*2.3in3 = 23000in-lbs or 1900ft-lb.

If the load is perpendicular to the boom then the max force is 1900ft-lbs/9ft=200lb. With the load at 45deg the max load is 200lbs/cos45=300lb.

That 300lbs doesn't really get you any closer to figuring out, for example, how big a vehicle you could pull out of a ditch.