As a kid my skateboard(s) had open bearings, I could clean and re-oil them. If I spun the wheels they would spin and spin and spin.
Do 'open bearings' have less friction than 'sealed bearings'? Sealed bearings don't seem to spin as freely.
Very interesting, I learned something.
Very interesting, I learned something.
Our steam, IC and Stirlings aren't the most powerful, anything that robs them from causing higher friction is worth eliminating.
Going to try this on a few of my home made accessories that I have put sealed bearings in Bruce.
Very interesting, I learned something.
Our steam, IC and Stirlings aren't the most powerful, anything that robs them from causing higher friction is worth eliminating.
Going to try this on a few of my home made accessories that I have put sealed bearings in Bruce.
I would be interested if there is a noticeable difference Jim as I have put these in many a steam item. Roller bearings do (sometimes) have more resistant than a well reamed stanchion...but have always more than made up for it when a belt is hooked up to drive accessories. The heavier the load the more roller bearings shine.
I've got some steel axles through steel holes (drilled for oil drips) that I have put a reamer through and I can spin flywheels in them for around 30 seconds with one good flick of a finger.
I can't do that with any sealed bearing shafts I have made.
Watching that guy spin those bearings in the vid, I think for models with bearings that's what I'm after.
Skate bearings should not spin and spin forever, you should aim for a 10-30 second span. Sorry Jim but I don’t know what you should aim for on a toy steamer
From what I gather there are three types of bearings, Open, Sheilded and Sealed.
Sealed bearings have a rubber seal that would increase friction, not a big deal on higher powered machinery than our toy steam units.
Yes Frank, especially running something of a low powered steam engine or even a stirling or flame licker....anything to get rid of any friction is the aim.