I like this guy's videos in general, but this one in particular is a great piece which analyzes the concept of truth as it applies to scientific studies, peer-reviewed journals, publication bias, statistical manipulation, and the whole concept of trusting authority, and also the whole concept of rejecting authority.
I suspect the answer is that it's because drums are "self energizing". The shoe wedges itself into the drum, so more inertia in the vehicle automatically gives you more braking force. This significantly reduces the effort required to activate them, which is why trailer brakes (which are almost always drums) can stop a 10,000 pound trailer with just a couple of amps at 12 volts coming from the tow vehicle.
--Ian
My boat's trailer has hydraulic disc brakes with the master cylinder part of the sliding tongue coupler. The mass of the boat/trailer compresses the master cylinder as the tow vehicle brakes, so braking force produced by the trailer brakes is proportional to the deceleration of the tow vehicle. The trailer wiring takes a flat 5 pin connector, where the 5th wire is the backup lights. That actuates a solenoid that keeps the brakes from activating when you back up the trailer. It works surprisingly well. That thing almost stops as well as without the trailer. https://cimg2.ibsrv.net/gimg/www.mia...357378f5a3.jpg
DNMakinson
04-25-2022 12:03 PM
Joe got me looking for more videos by "this guy". Following is one on bowling that, once again, supports the hypothesis that improvements in sports comes mostly from equipment advances:
Political / Social Warning: For women's sports, the latest equipment change that has improved scoring is the incorporation of testicles.
DNM
Joe Perez
04-25-2022 12:47 PM
Originally Posted by DNMakinson
(Post 1620934)
Joe got me looking for more videos by "this guy". Following is one on bowling that, once again, supports the hypothesis that improvements in sports comes mostly from equipment advances:
Yeah, I've been binging his stuff lately.
He covers a huge range of topics in a very engaging manner. One of his videos, for instance, is all about his research into optimizing his own videos' thumbnail images and titles in order to perform best within the Youtube ranking. It's a very meta sort of discussion, as you can tell that he doesn't particularly like the fact that he's being forced to game the system.
Originally Posted by DNMakinson
(Post 1620934)
Political / Social Warning: For women's sports, the latest equipment change that has improved scoring is the incorporation of testicles.
I honestly had no idea that oil was selectively applied to bowling lanes in very deliberate patterns and thicknesses.
There's a podcast which I often listen to, Science vs. In it, self-admitted heterosexual and cis-female host Wendy Zuckerman does deep-dives into topics at the intersection of science and politics. In the past, I'd have described the program as being fairly objective, with perhaps a slight liberal leaning. But over the past couple of years, as the public discourse has been getting more and more ridiculous, her attempts to de-clutter topics of meaningful importance have been sounding more and more like propaganda.
As an example, the episode to which I listened while mowing the lawn and washing the car on Saturday, Trans Kids: The Misinformation Battle:
To paraphrase a few points: "No, physicians aren't performing genital mutilation on toddlers. They're merely prescribing drugs to suppress puberty, and then waiting until they're teenagers before permanently altering their bodies with surgery and hormones."
or... "While it's true that women who experienced male puberty have a physical advantage over other women in athletics, so do women who were born with a predisposition to being taller than average. Should tall people be excluded from playing basketball just because they have a natural advantage over people whose genes didn't grant them that characteristic at birth?"
or... "Besides, it's not like athletes who transitioned to female are completely unbeatable. Here's a trans-woman who lost one of her first five competitions!"
But... I literally just noticed that this is the pictures thread and not the gen-wu or politics threads, so here's a picture of a cat:
