Scioly.org

Junuh wrote: ↑November 21st, 2019, 8:04 am Any idea where the image gallery could be found? The link is broken for me but it would be very helpful to see some design examples.

Also, in a sort of unrelated note, could someone offer me some insight on how the banebots wheels are attached to the axle? What axles work well? I currently have a 1/4 in threaded rod I had planned on using but I have no idea how that would connect to the banebots wheel or the tiny hub connector I've seen in some videos.

Sorry if my questions are kinda stupid, I'm probably a bit dense.

Don't worry about it, we've all been there. Banebots sells hubs to fit different axle sizes and their different models of wheels. If you have a 1/4" threaded rod, consider getting these:
http://www.banebots.com/product/T81H-RS41.html
They come with set screws that allow you to secure the hub to the axle, and snap rings to secure the wheels to the hubs.

Idk about the image gallery.

Junuh wrote: ↑November 21st, 2019, 8:04 am Any idea where the image gallery could be found? The link is broken for me but it would be very helpful to see some design examples.

Also, in a sort of unrelated note, could someone offer me some insight on how the banebots wheels are attached to the axle? What axles work well? I currently have a 1/4 in threaded rod I had planned on using but I have no idea how that would connect to the banebots wheel or the tiny hub connector I've seen in some videos.

Sorry if my questions are kinda stupid, I'm probably a bit dense.

Probably not the best idea, but another alternative is to use nuts and washers to secure the wheels if you don't want to pay for hubs.

https://scioly.org/wiki/index.php/Gravity_Vehicle
I changed the Image Gallery link to the archive.org crawl of it. It didn't save all of page 2 when it crawled it, but page 1 is there. It won't blow up the pictures, either.

MoMoney$$$;)0) wrote: ↑November 20th, 2019, 7:36 pm

Junuh wrote: ↑November 21st, 2019, 8:04 am Any idea where the image gallery could be found? The link is broken for me but it would be very helpful to see some design examples.

Also, in a sort of unrelated note, could someone offer me some insight on how the banebots wheels are attached to the axle? What axles work well? I currently have a 1/4 in threaded rod I had planned on using but I have no idea how that would connect to the banebots wheel or the tiny hub connector I've seen in some videos.

Sorry if my questions are kinda stupid, I'm probably a bit dense.

I think they make bigger hubs. I'm not sure, though, since I've never used their wheels. I use brass tubing for my axles, but I don't think they'll hold up to the weight this year. I've been contemplating cramming some threaded rod in to stiffen 'em, since I know that's possible. I also know that I found some hubs that fit either the 40 or the 81 wheels that fit my axles, but your threaded rod is probably thicker than mine. I think the hubs have a screw to tighten them down on the axle, and then the wheels snap into them.
I hope this helps, assuming that you're not in Tennessee.

windu34 wrote: ↑September 20th, 2019, 10:18 am a.) Many teams will make an insert to fit between the rod and bearing to get a "interference fit". I always 3D printed a thin insert, but you could certainly do it other ways.

How do you print the thin insert? My threaded rod is about 4.9mm in diameter and the bearing has a 5mm inner diameter. But it's impossible for me to print a 0.1mm wall or even 0.2mm.

sciencecat42 wrote: ↑November 21st, 2019, 6:15 pm

windu34 wrote: ↑September 20th, 2019, 10:18 am a.) Many teams will make an insert to fit between the rod and bearing to get a "interference fit". I always 3D printed a thin insert, but you could certainly do it other ways.

How do you print the thin insert? My threaded rod is about 4.9mm in diameter and the bearing has a 5mm inner diameter. But it's impossible for me to print a 0.1mm wall or even 0.2mm.

You can wrap tape around the axle to make it just a little bit wider.

sciolyperson1 wrote: ↑November 21st, 2019, 6:18 pm

sciencecat42 wrote: ↑November 21st, 2019, 6:15 pm

windu34 wrote: ↑September 20th, 2019, 10:18 am a.) Many teams will make an insert to fit between the rod and bearing to get a "interference fit". I always 3D printed a thin insert, but you could certainly do it other ways.

How do you print the thin insert? My threaded rod is about 4.9mm in diameter and the bearing has a 5mm inner diameter. But it's impossible for me to print a 0.1mm wall or even 0.2mm.

You can wrap tape around the axle to make it just a little bit wider.

Ahh that's a good idea. I was thinking of just using paper for some reason... I forgot tape existed.

Can anyone advise me on how to reduce friction in ball bearings. I bought open ones and then put them in wd40. They are still not that free. Any advice? Thanks

rabbitman wrote: ↑November 28th, 2019, 6:36 am Can anyone advise me on how to reduce friction in ball bearings. I bought open ones and then put them in wd40. They are still not that free. Any advice? Thanks

You may want to try cleaning out the bearing before wd40? If you have lighter fluid or acetone (nail polish remover), pour some into a cup and put the bearings in and swish around for a bit. It should clear out some of the gunk that might be stuck in the bearing.

WD 40 will leave a thin gummy residue after it dries unless you blow it out. Acetone is quite flammable souse it with care.. 70% rubbing alcohol is somewhat ls flammable and should work well.
I like blowing the bearings dry with high pressure air after a soak in any solvent,. but that is a violation of OSHA rules.

Last year I tried numerous substances to loosen up the bearings and I had the most success soaking them in kerosene. If you do this, make sure you soak them outside so that you don't breath in the fumes.