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1.5 inch ball bearings

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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1.5 inch ball bearings

Unread postAuthor: skyrunner06 » Tue Aug 28, 2007 8:03 pm

do you know if they make these cause my barrel is 1.5inch and i would just grind the bearings down a bit with my wire brush grinder so ?
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Unread postAuthor: Fnord » Tue Aug 28, 2007 8:10 pm

They probably make them; the only problem is finding out who "They" are. Ball bearings of that size will probably cost more than you want to pay for ammo, too.

I posted a tutorial on how to make cannon balls of any size in the how-to section a while back. I'm extremely lazy and tired right now so you'll have to look for the link manually.
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Unread postAuthor: Spuddin » Tue Aug 28, 2007 8:20 pm

i would say steel ball bearings that size would be too heavy for a launcher and like fnord said too expensive. and grinding them down with a wire brush just aint gonna happen. im sure ball bearings are annealed "very hardened". u could take a 1" pipe and cut sort pieces, cap them and flare out the bottom for a tight fit. btw is your gun a combustion or pneumatic?
look in the forum section under "ammo/construction material", ppl has posted alot of good ammo ideas.
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Unread postAuthor: Redcoat » Tue Aug 28, 2007 9:17 pm

I don't know if you get them in america but you know those magnet stes with the plastic rods and people make stuff like robot models andhouses out of them> well you can get really big ones and the balls that hold the plastic rods together (their magnets) would be perfect.
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Unread postAuthor: jackssmirkingrevenge » Tue Aug 28, 2007 10:20 pm

I had made this with the specific intention of shooting a 2.75" steel ball bearing that was once part of a crane that weighed over 3lbs.

Even at low velocity (by low I mean travels for a few yards then bounces along the ground) the recoil was enough the snap the ignitor against my fingers :shock:
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Unread postAuthor: frankrede » Tue Aug 28, 2007 11:58 pm

jackssmirkingrevenge wrote:I had made this with the specific intention of shooting a 2.75" steel ball bearing that was once part of a crane that weighed over 3lbs.

Even at low velocity (by low I mean travels for a few yards then bounces along the ground) the recoil was enough the snap the ignitor against my fingers :shock:
Your FullmetalJacket? Dam, you have a great taste in music.
I say you use that ball bearing in a cannon the size of the swat cannon.
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Unread postAuthor: jackssmirkingrevenge » Wed Aug 29, 2007 3:12 am

Your FullmetalJacket? Dam, you have a great taste in music.
I say you use that ball bearing in a cannon the size of the swat cannon.


Music? I though Full Metal Jacket was a movie hehe

That ball bearing still haunts me, I have to make a pnematic - it's on my "I'll make that some day" list.
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Unread postAuthor: CS » Wed Aug 29, 2007 3:34 am

My uncle owns a electric motor repair business, and everytime I went up there he gave me several "steelies" (large diameter ball bearings). I still have some of them somewhere, and I recall some of them being over 2" in diameter. I am unsure if any are with in close tolerance to the nominal pipe sizes.

As mentioned finding them will be a bit of trouble, and in short supply.
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Unread postAuthor: rna_duelers » Wed Aug 29, 2007 3:42 am

"How tall are you,private?Sir,5'9",sir.5'9" I didn't Know they stacked crap that high"
It is going to get made,I'm telling you.


It would be a bit hard to grind down a 1.5" bearing...Good luck getting a nice spherical shape,and a good seal.Just look in the How-To section plenty of good info there.
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Unread postAuthor: jackssmirkingrevenge » Wed Aug 29, 2007 3:51 am

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Unread postAuthor: Redcoat » Wed Aug 29, 2007 3:56 am

perhaps a junior grade shotput could help you?
Buy a few from rebel sport or something.
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Unread postAuthor: frankrede » Wed Aug 29, 2007 6:37 am

jackssmirkingrevenge wrote:
Your FullmetalJacket? Dam, you have a great taste in music.
I say you use that ball bearing in a cannon the size of the swat cannon.


Music? I though Full Metal Jacket was a movie hehe

That ball bearing still haunts me, I have to make a pnematic - it's on my "I'll make that some day" list.

Ya movie lol.
I'm too tired for forums:/
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Unread postAuthor: skyrunner06 » Wed Aug 29, 2007 7:00 am

ok im 6ft tall but ill probobly just make a conon ball _fnord
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Unread postAuthor: Redcoat » Thu Aug 30, 2007 3:42 am

I'd like to take back my shot put remark. it was crapola. I was high when i posted it.

ANyways, have you thought of injecting a ping pong ball with glue?

It might work.
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Unread postAuthor: DYI » Thu Aug 30, 2007 6:24 pm

A 1.5" ball bearing would be too small for a normal SCH 40 1.5" barrel (which would be about 1.6" ID). 1.5" ball bearings on McMaster are $5.18 each, but for a SCH 40 barrel you would be better with a 1-9/16" ball bearing. McMaster sells ball bearings up to 4-1/2" in diameter, but bigger ones probably do exist.

And I really doubt your ability to effectively grind one of these down with any success.
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