Recent content by Juanda

So you have the circumference indicated by the arrow in green welded and then torsion is applied there. I think you can approximate the stress at the welds with the torsion divided by the area of the weld. Another issue is how that torsion will travel through your part. I'd say the most critical...

Beisball isn't too common in Spain so I don't really know what's common. I wrote Beisball throwing machine on YouTube or something along those lines and that's one of the shortest videos that showed up at the top. Maybe they did it like that to save on cost and complexity although it certainly...

From @berkeman 's like I understand my assumption was correct. @SMKJ you have mentioned conservation of energy. Although it's true energy will always be conserved (in classical physics) there need to be the right conditions for the transfer of energy to happen as you intend. First of all, you...

In the section "8-3 Threaded fasteners" from Shigley's the following text can be seen: Replacing a nut is simple enough. However, replacing a tapped part or having to update the tapped hole with something like a helicoil could be more complicated. Would that recommendation from Shigley's apply...

Just to make sure I understood correctly. Are you trying to build something like this?

Maybe I should have been more specific when I was defining failure. I meant failure during the preloading process. I agree with you regarding the loss of preload due to vibrations. I work in an environment in which every screw must be prepared to resist vibrations and it's always annoying. It's...

I'd like to better understand this last statement. I've been reading more about threaded joints and I will try to summarize what I learned. First I will define what I mean by failure so we all are on the same page. Failure would be not achieving the target preload in the joint either because...

It's definitely tempting. It's just that they also tell you in the manual to not leave the batteries unattended anyway. I will reconsider though before making a final decision.

Lots of useful information here. Thank you all. I think I will take two additional precautions if I proceed with this. I will take the battery away from the vehicle. It'd be less convenient than charging it on site but if something goes wrong the vehicle will not get on fire. Specific battery...

I want to buy a car/motorcycle battery charger because it's a very convenient thing to have. Also, for a while, I have wanted to have a simple power source like shown. How safe is it to use it to charge lead-acid batteries from cars or motorcycles? I know the simplest option is to buy the...

I was also confused by this. Here is a related thread. Post #6 from that thread contains the insight that made it click for me.

Here is a related article that might be useful. It covers random vibration analysis in combination with fatigue analysis (Palmgren-Miner) using the results previously obtained from the software. It's using a different software than the one you mentioned but the fundamentals are the same...

You're right. I should focus on the big picture before tackling these details if there isn't a quick and easy solution. I will make a bell crank steering mechanism so that at half the steering angle the condition of the 3 lines intersecting is fulfilled. I will try to make it in a way that keeps...

I would initially be aiming for an Ackerman geometry (or bell crank or similar) but trying to accomplish a true coincidence of the 3 lines within some tolerance due to manufacturing for any steering angle. An interesting alternative I found is to independently feed each wheel with a servo and...

So is the Wiki page just wrong in this instance? I love Wikipedia but I am aware it can be wrong sometimes. I am referring to this segment as Jack brought up. Does a Bell-crank steering have the same limitations? Is there a better mechanism that can really guarantee that, at any angle of...