1.5 inch ball bearings

Potatoes last one shot, so build reusable! Discuss ammo designs and ideas. Tough to find cannon part or questions? Ask here!
skyrunner06
Private
Private
Posts: 7
Joined: Sun Aug 12, 2007 3:43 pm

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 ?
User avatar
Fnord
First Sergeant 2
First Sergeant 2
Posts: 2239
Joined: Tue Feb 13, 2007 9:20 pm
Location: Pripyat
Been thanked: 1 time
Contact:

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.
Image
User avatar
Spuddin
Specialist 2
Specialist 2
Posts: 262
Joined: Wed May 16, 2007 1:28 pm
Location: Oklahoma
Contact:

Donating Members

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.
_______________________
www.freewebs.com/spuddin
User avatar
Redcoat
Corporal 4
Corporal 4
Posts: 835
Joined: Tue Feb 13, 2007 1:07 am
Location: Sydney ,Australia
Contact:

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.
Poo.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26216
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 576 times
Been thanked: 347 times

Donating Members

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:
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
frankrede
Sergeant Major 2
Sergeant Major 2
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Has thanked: 1 time
Been thanked: 1 time

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.
Current project: Afghanistan deployment
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26216
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 576 times
Been thanked: 347 times

Donating Members

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.
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
CS
Moderator
Moderator
Posts: 1837
Joined: Fri Feb 18, 2005 5:32 pm
Location: Southern Utah

Donating Members

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.
User avatar
rna_duelers
Staff Sergeant 3
Staff Sergeant 3
Posts: 1739
Joined: Mon Sep 26, 2005 7:07 am
Location: G-land Australia

Wed Aug 29, 2007 3:42 am

"How tall are you,private?Sir,5'9",sir.5'9" I didn't Know they stacked shit 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.
Image
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26216
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 576 times
Been thanked: 347 times

Donating Members

Wed Aug 29, 2007 3:51 am

hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Redcoat
Corporal 4
Corporal 4
Posts: 835
Joined: Tue Feb 13, 2007 1:07 am
Location: Sydney ,Australia
Contact:

Wed Aug 29, 2007 3:56 am

perhaps a junior grade shotput could help you?
Buy a few from rebel sport or something.
Poo.
User avatar
frankrede
Sergeant Major 2
Sergeant Major 2
Posts: 3220
Joined: Thu Jul 20, 2006 9:47 pm
Has thanked: 1 time
Been thanked: 1 time

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:/
Current project: Afghanistan deployment
skyrunner06
Private
Private
Posts: 7
Joined: Sun Aug 12, 2007 3:43 pm

Wed Aug 29, 2007 7:00 am

ok im 6ft tall but ill probobly just make a conon ball _fnord
User avatar
Redcoat
Corporal 4
Corporal 4
Posts: 835
Joined: Tue Feb 13, 2007 1:07 am
Location: Sydney ,Australia
Contact:

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.
Poo.
User avatar
DYI
First Sergeant 5
First Sergeant 5
Antigua & Barbuda
Posts: 2862
Joined: Sat Jul 07, 2007 8:18 pm
Location: Here and there

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.
Post Reply