BOLTR: Sprag Clutch | Engineered Bearings

[crazyguy]

A simple device that stops you from going the wrong direction. Should be standard on vehicles and dating apps.

[buckstarchaser]

0:11 "It's Huan Wai." Your Chinesium jokes are getting rather complex.

[joeestes]

A lot of transmissions use sprag bearing especially on 2nd gear drum clutch pack! The keyed inner race gives it away! Great video!

[leestuurmans]

Thats cool. There's a bicycle hub manufacturer here in the states called Onyx that uses a sprag clutch assembly. Apparently a Duke university study in 2016 determined that the Onyx hub had the lowest rolling resistance in any commercially available bike hub at the time. They're pert spendy though, as one might imagine. Great VJO as always!

[sabresmile]

I learn more, more quickly from watching your vids like this than I would on a college course.
Love your content, my dude.

[The_R-n-I_Guy]

Wish I had some of those when I was younger. Woulda been fun to replace my buddies' skateboard bearings

[MrMuckyPaws]

Every days a school day. I’ve always wondered how they worked but never made the time to learn. Thanks! You’ve educated me.

I’m fairly sure there must be one inside a new Fly Fishing reel as it runs smooth and silent in wind in, but a friction clutch engages in reverse. It’s not the usual ratchet and pawl mechanism. I’ll be thinking of you next I’m winding in a trout. If that’s not the weirdest compliment, I don’t know what is!

[HomelabExtreme]

Interesting fact; the one-way bearing shown in the picture, can fail to engage the lock, if it spins fast enough in in the unlocked direction, and very suddenly changes direction, then the wedge-balls will ride on an oil film, preventing them from engaging, so it's very important to not rely on these type of bearing for safety..
You see this often on smaller engines using oneway bearings instead of ratchet type pull start systems.

[rgr]

Great breakdown on the Sprag bearing. They are vital in helicopter operations where they are called the Sprag Clutch or Free Wheeling unit/assembly. This is critical to helicopters as they allow the free wheeling of the rotor systems in case of engine failure and allow you to perform a autorotation. It is also used during practice autorotations when the engine is throttled back so that the rotor system disengages with the engine allowing the “free Wheeling’ of the rotors and a controlled (hopefully) decent and landing. Thanks for the video sir.

[christurley]

We had a needle roller bearing application at work. A ramp on the bearing cage did the one way binding. Useful feature in a tiny package. Thanks for the video.

[GavCritchley]

One of the most interesting trips I did was to SKF. They have this little exhibition in the foyer showing where their bearings are. Any kind of machinery that rotates, anywhere on the planet and off it, probably has an SKF bearing in it. There are a few other big bearing manufacturers too. SKF is a fascinating company.

[me]

Ave has one of the best informational and educational channels on YouTube. For anyone who likes to tinker with things and take things apart to see how they work this is the perfect channel to watch.

[adamgalowitz]

Long-time subscriber and lover of your channel here. Was browsing in a used tool shop this morning and picked-up a NOS formsprag clutch and even more interesting...a formsprag clutch dealer’s sample. A neat little brass version with a plexiglass window showing the inner mechanism. Happy to send it your way if you’d be interested in making new content on this.

[vesas]

I've encountered these in my fly fishing reels. When retrieving the line it spins freely and when pulling more line out (or on some rare occasions when you actually manage to hook a fish) it locks and the spool spins against the disc brake system. Pretty nice compared to some cheap reels where the brake applies to both directions. Also, if you want to switch the reel from right to left hand retrieve, you just flip the bearing. Thanks for showing how they actually work!

[hippynurd]

Torquflite 727 learned me about sprags, they are pretty groovy things

[treverkirk]

This is the only channel I've ever even considered becoming a Patron for. Thanks for whatcha do AvE

[ThePaulius]

In all the years you've been entertaining me, I've learnt something I didn't know already. I salute you.

[juststeve]

In all my years I've never seen a bearing like that... Cunningly simple, as most of the best ideas are.
Thanks for sharing.

[doug]

I didn't know these existed until your video. It's just solved a problem with a worm driven mechanism I'm designing which also needs to freewheel in one direction.

[bigj]

I found out about these for the first time when is was attempting to rebuild a spinning reel. They were basically the lynchpin of the whole setup. 200$ reel fixed by a 3 dollar bearing. Ordered from Canada btw!! Awesome video as always!