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YOUR JUMPING STILTS => Modifications => Topic started by: Jason on July 18, 2007, 08:53:41 PM

Title: Made my own bearings
Post by: Jason on July 18, 2007, 08:53:41 PM

I looked into replacing my worn bearings and found either plastic or rolled bronze available
now due to keeping prices down these are made down to a price (nothing wrong with that makes them affordable)
But if you want the best machined phospher bronze and hardened silver steel pins are the way to go
Now nobody makes these as far as I know so I made a set up (if people are interested I'll post how to but it's involved)

Although a lot of you might lack some of the tools here but the basic idea is the same as fitting any set of bearings so I thought you might find it useful and some of you might have an relative or mate who can do the machining for you

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 08:54:50 PM

Old bearings you can see why they need replacing

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 08:55:34 PM

New handmade bearings (ain't they pretty)

Title: Re: Made my own bearings
Post by: jump-up on July 18, 2007, 08:56:31 PM

Jason again ;D making things is your hobby right?

but post the insructions. very hot bearings! :o

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 08:56:55 PM

First strip all the bearings down so you're left with just the bare frames like so (oops forgot to take pic of the spring braket stripped)

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 08:58:03 PM

You got it  jump-up  ;D

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 08:58:56 PM

Next you have to ream the holes to make them round ( they are punched at the factory and sometimes come out oval also the new bearings are slightly bigger ) and then debur

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:00:58 PM

The top bracket has a blue plastic spacer that only goes between the bearings now to improve this I made an ally full width one to keep the frames apart (so no flex under stress)

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:02:08 PM

The spring bracket has the plastic roller and as the new shafts and bearings are larger this needs to be machined

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:03:19 PM

Now the bearings need to be stuck in I use an anerobic retainer (it will stop them rotaton and wearing the frames )

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:03:58 PM

The under foot one is easiestjust press the bearings in and slide the new hardened tubes in ( I used grease with Molybdenum Disulphide it makes bearings last ages (like a teflon coating))

Title: Re: Made my own bearings
Post by: x_Rave_Dave_x on July 18, 2007, 09:05:44 PM

thats amazing  wish i could make my own stuff for when i wear stuff out instead ill just be paying money for new stuff
your really good at it...

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:06:10 PM

Spring bracket same but put the plastic roller between the frames first

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:07:24 PM

Thanks Dave I enjoy doing it  :D

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:08:04 PM

Top bracket needs the ally spacer in first but otherwise the same again

Title: Re: Made my own bearings
Post by: x_Rave_Dave_x on July 18, 2007, 09:08:16 PM

looks like a great hobby keep up the good work

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:09:25 PM

Finally  reassemble all the bolts using grease between the bearings and inner washers

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:11:09 PM

The finished item infront of the first of my homemade crash mats (notice the foam for the rest)

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:12:23 PM

I know this project is beyond anyone that does'nt have a lathe and the rest of the tooling but I hope it is of interest to a few and if anyone does decide to have a go I'll do some mesurements and drawings for them to make the bearings

The best bit is with only 2 thousanths of an inch clearence on the bearings I now get absolutely no wobble at all

Thanks for the space Naz ( know I use a lot  ;D)

Title: Re: Made my own bearings
Post by: webmaster on July 18, 2007, 09:16:04 PM

Thanks for another great tutorial Jason

I think I need to make a new section titled Jason's Mods :D

Much appreciated :)

Title: Re: Made my own bearings
Post by: Jason on July 18, 2007, 09:23:38 PM

Hey slow down Naz my heads big enough (according to the wife)  ;D

But praise is always gratefully accepted  8)

Title: Re: Made my own bearings
Post by: sprog on July 19, 2007, 09:41:11 PM

Nice work Jason, your ingenious mods amaze me! :)

Title: Re: Made my own bearings
Post by: Jason on July 19, 2007, 10:22:53 PM

Thanks Sprog by the time I get to Capital Bocking we will see if this one is a success or not  ;D
it seems to be good so far  8)

Title: Re: Made my own bearings
Post by: hybrid_hex on July 20, 2007, 03:41:52 PM

you have alot of free time on your hands!

Title: Re: Made my own bearings
Post by: Jason on July 20, 2007, 07:44:59 PM

Au contrere Hex I seem to have no time at all I can't seem to find enough hours in the day to do all that I want  ;D

Title: Re: Made my own bearings
Post by: jump-up on July 20, 2007, 10:29:44 PM

congratulations with your moderator position Jason!

Good luck!

Title: Re: Made my own bearings
Post by: Jason on July 20, 2007, 10:41:06 PM

Thanks jump-up
I can already feel the weight on my sholders  ;) ;D

Title: Re: Made my own bearings
Post by: Dark Knight on July 21, 2007, 12:01:51 AM

Quote from: Jason on July 20, 2007, 10:41:06 PM

Thanks jump-up
I can already feel the weight on my sholders  ;) ;D

Well done ! If it gets too heavy prop it up with a stilt !  ;D
I'm a Moderator for a dating web site called " Hot or Not " it's a lot a laughs looking and reading the banned stuff, we even have our own forum site !

Title: Re: Made my own bearings
Post by: rickbicker26 on July 21, 2007, 01:46:32 PM

or if we cant make them, we can pay jason to make them for us instead;D

Title: Re: Made my own bearings
Post by: Jason on July 21, 2007, 09:33:02 PM

Thanks DK I think I'm going to enjoy this

rickbicker please don't offer me money that sounds to much like a proper job I might be mistaken for someone who works hard then my Guvnor would want me to do something at work ;) ;D

Title: Re: Made my own bearings
Post by: chocl8 on August 07, 2007, 11:00:09 PM

Well, you could always do them for free then!  ;D

Title: Re: Made my own bearings
Post by: Jason on August 07, 2007, 11:06:01 PM

Free Free stop that swearing chocl8  ;)

Free is against my religion I feel unsteady at the thought  ;D