Tyre Changer Fabrication

[prescott06]

Hi guys, been keeping an eye on this section for a while, some very good stuff!!

Anyway, im fed up with going round to the tyre shop to get drift tyres taken off/replace/re-beaded so i'm going to make some stuff so that i can do it myself.

We just got a new (new to us, very old to the world ) lathe at work (im an apprentice at an engineering joint). This lathe has a 5m bed (its friggin huge!!!), and a 4 jaw chuck capable of holding the inside of at least a 19" rim (i only need to do 17's at the most) - its also got a clutch so i can control the speed and make it go really slow (does 1000rpm max ).

I reckon i can make a tool that bolts to the bed or saddle of the lathe which will allow me to pop the bead and then remove/refit the tyre, acting like the power assisted tyre levers you see on the professional machine - we've got heaps of spare/second hand air rams lying round, so i could rig up one of these to push an adjustable arm onto the bead giving me beak breaking ability.

What im not sure about is how i use the arm to act as a tyre lever. AFAIK, the pro's wedge the end of the arm between the tyre and the rim, forcing it to pop out over the edge of the rim.... Does anyone have any experience/pics/vids that could help me understand?

All i can find is vids of people stretching tyres with deoderant

Putting the tyre back on with the arm should be similar to breaking the bead right? Your just forcing the edge of the tyre over the edge of the rim by putting pressure on it with the arm+turning the lathe over 1 revolution to do it to the whole tyre...

I would do some 3d drawings to explain myself a bit better, but Solidworks isn't working cos the tafe servers are off, and i need them for my educational license

[VB-]

for using a bar to act as a lever, the process works like" imagine your above the rim, its laying down on the floor, you push the bar down in between the rim and the tyre, and pull the lever back towards the centre of the rim, levering of the rim itself, so it will pull the other end of the lever (under the lip of the tyre) up and over the edge of the rim

if thats what you wanted to know...... if i told you what you already know, at least my post count goes up lol

Edited December 18, 2007 by VB-

[battery]

what about one of these http://cgi.ebay.com.au/PORTABLE-TYRE-CHANG...1QQcmdZViewItem

i got no idea if they work but its a start

[prescott06]

Yeh, i think i get the whole levering the tyre now (same as changeing a push bike tyre, only a lot bigger )

I did think about getting one of the portable ones of ebay, but i think i'd get bored of changing tyres manually

Pretty sure the lathe idea will work, just gonna make a plate to bolt to the chuck, with a spare hub i got lying round, so i can actually bolt the wheel to the lathe, much safer Now i just gotta figure out my lever/arm/air ram arrangement, and weld the thing up! (oh, and we actually need to get the lathe wired up to, aparently it'll draw 80 amps at full load )

[WRRR]

Not raining on your parade but have a look at some of the 4wd gear.

There are any number of tyre changers/bead breakers out there - TyrePliers, R&R Bead Breaker, Tyre Jaws, etc.

May save you a lot of effort if you buy or at least copy what is out there and works.

Cheers

[prescott06]

Not raining on your parade but have a look at some of the 4wd gear.

There are any number of tyre changers/bead breakers out there - TyrePliers, R&R Bead Breaker, Tyre Jaws, etc.

May save you a lot of effort if you buy or at least copy what is out there and works.

Cheers

Yeh, been looking at that too (although its hard with ghey capped broadband internet). Im trying to look at the sort of lever action they use to break beads etc, should be easy to adapt that into my application...

Last day at work for the year though tomorrow, so its gonna have to wait a while

[VB-]

are you only going to change your own tyres or everyones? coz if you use a hub you will severely restrict who you can change tyres for

[prescott06]

are you only going to change your own tyres or everyones? coz if you use a hub you will severely restrict who you can change tyres for

i only plan on changing the tyres on our drift cars, both of which are 114.3*4 stud pattern

Why would anyone else trust me with their tyres? :laughing-smiley-014: