Author Topic: Epoxy bonding of plastic bushes  (Read 19896 times)

Offline gillybert

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Epoxy bonding of plastic bushes
« on: November 13, 2007, 11:16:58 PM »
I've now bonded the plastic bushes into both my PJ spring tops and lower leg top joint  :o.
The footplate bearings both have my deep groove ball bearing assemblies in and the hoof bearings are as supplied.

Made a video to show how I did the fitting and bonding, but please remember that I am still testing these joints  ;) .  All the new joints have had about ½ hour of bocking so far and still seem smooth and rattleless.  But only time will tell  :)

[youtube=425,350]v/E9lvKSiAfi0[/youtube]

I'll update the thread with my results  ::)

GB...

Offline Sx Nutta

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Re: Epoxy bonding of plastic bushes
« Reply #1 on: November 13, 2007, 11:30:54 PM »
Looking good, I may go that to mine, if it makes any difference in performance, when running, and jumping! :P


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Offline webmaster

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Re: Epoxy bonding of plastic bushes
« Reply #2 on: November 14, 2007, 12:44:17 PM »
Thats an excellent tutorial.
Let us know how you get on but looks like it will work really well and increase the life of the plastic bushes.

Offline aidanh1

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Re: Epoxy bonding of plastic bushes
« Reply #3 on: November 14, 2007, 06:51:32 PM »
Nice one gilly bert thats a brilliant tutorial and tell us if it makes any diffrence to your bocking i may have to do it to mine ;D

                                              i carnt spel... or maybe you cant read ;)

Offline GRS

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Re: Epoxy bonding of plastic bushes
« Reply #4 on: November 27, 2007, 09:30:43 PM »
Thanks Gillybert, I tried this and I think its made a massive difference, cheers m8, Plus its really easy to do.

Offline gillybert

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Re: Epoxy bonding of plastic bushes
« Reply #5 on: November 27, 2007, 09:36:51 PM »
Hey GRS,

Great that someone else has tried the fix  :D  I really hope it is a long term improvement  8)

I've now used mine for over 11 hours and haven't noticed any real wear or sloppyness coming back, yet.

Which bushes did you do  ??? Did you have any probs and did you just polish or polish & ream  ???

Any feedback on application and long term use would be appreciated  :D

GB...


Offline GRS

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Re: Epoxy bonding of plastic bushes
« Reply #6 on: November 27, 2007, 09:44:45 PM »
I did it at the top of spring and the one in the feet
I think I over polished the tube so it moved really easily but didn't ream the bushes.
I don't have a steady hand so I didn't glue the inside of the bush just incase I got it on the tube.
I'll let you know how I get on but so far so good

Offline Sx Nutta

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Re: Epoxy bonding of plastic bushes
« Reply #7 on: November 27, 2007, 09:50:57 PM »
I may be doing mine in the the holiday from uni, but I may be using brass for my bushings then using epoxy to hold them in place!!


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Offline gillybert

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Re: Epoxy bonding of plastic bushes
« Reply #8 on: November 27, 2007, 09:53:48 PM »
Hey Sx,

KiyaBob's PJs have brass bushes in, and I'm bonded them in at the weekend to see if I can reduce the rattle,  I'll post how it goes  :)

GB...

Offline Sx Nutta

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Re: Epoxy bonding of plastic bushes
« Reply #9 on: November 27, 2007, 10:02:04 PM »
Hey Sx,

KiyaBob's PJs have brass bushes in, and I'm bonded them in at the weekend to see if I can reduce the rattle,  I'll post how it goes  :)

GB...

Cool, will be watching the forums, for a update! cheers GB


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Offline bobw

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Re: Epoxy bonding of plastic bushes
« Reply #10 on: May 05, 2008, 10:05:57 PM »
I've noticed some movement and a knocking noise in my top bearing (spring to frame).Just wondering how your epoxy bearings are holding up. need to do something quickly the noise is so annoying.


Offline Brendan (NeoNinja)

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Re: Epoxy bonding of plastic bushes
« Reply #11 on: May 05, 2008, 11:01:18 PM »
Hey, sorry for more n00bish questions.

What is the purpose of this mod? And how does it affect performance?
Everyone's dreams sit aloft a rungless ladder. Some ladders are higher than others. Some are so tall they reach high above the clouds - but everyone can see their dream. Most people see that their ladder has no rungs and although they may talk about climbing it one day, seeing no way to get there, they eventually give up and settle for what lies beneath it.
      The brave however, the wise, the imaginative and the strong of will seek out their missing rungs. They learn all they can about the ladder, they surround themselves with friends and family who would also find the rungs, and failing all else they craft the steps themselves with their own two hands from nothing. Sometimes a rung breaks and the person falls. Some of these people will fall too hard and lose the strength to climb again - Yet they feel comfort in knowing they tried. They became better for it. And they experienced things and witnessed sights upon the climb that those who sat forever beneath it will never know.
      Then there are the special few who find new steps, or fix and climb again the ones that failed. Who eventually, through sheer tenacity and courage come to reach the final rung - Only they will have their dreams fulfilled. The extraordinary then build new ladders. These are the strongest people of all.


Offline Nero

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Re: Epoxy bonding of plastic bushes
« Reply #12 on: May 06, 2008, 01:14:37 PM »
the purpose was to make the bushings more secure, thus making the stilt wobble less as the bushings wear.
gb aint been about for a lil while though so i dont know the lasting result of it

“Life is not a journey to the grave with intentions of arriving safely in a pretty well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out and loudly proclaiming ... WOW! What a ride!”

Offline Jason

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Re: Epoxy bonding of plastic bushes
« Reply #13 on: May 06, 2008, 08:20:05 PM »
We did half of Clives with epoxy a couple of weeks ago and they seem to be doing well
will keep you all updated

Jason  :Hoofies2:

Offline Rodamus_Zero

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Re: Epoxy bonding of plastic bushes
« Reply #14 on: August 24, 2008, 02:02:17 AM »
How are the bushes fairing this far down the line?
Great Tut by the way Gillybert, Ill be doing this to my PJ once I get some Epoxy ^^
« Last Edit: August 25, 2008, 09:37:39 PM by Rodamus_Zero »
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Offline Rodamus_Zero

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Re: Epoxy bonding of plastic bushes
« Reply #15 on: August 25, 2008, 09:37:58 PM »
Would Araldite do the same job as Epoxy?
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Offline Jason

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Re: Epoxy bonding of plastic bushes
« Reply #16 on: August 25, 2008, 10:43:16 PM »
Hi Rodamus_Zero

Araldite is an epoxy resin so yes you can use it

The bushes on Clives lasted well but he changed bocks and they are his spares at the moment so not in use at the moment

Jason  :Hoofies2:

Offline Rodamus_Zero

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Re: Epoxy bonding of plastic bushes
« Reply #17 on: August 26, 2008, 07:36:23 PM »
Well, it only took a few minutes to take the Knee Bar off along with the bushes.

It was an hour later when I had done everything, I thought it was going to be really long with lots and lots of fiddling around but it really wasnt. The only annoying thing was when I kept dropping the Alann Key  :banghead:

So both stilts are now setting overnight while I try are scrounge some oil up.

I think I might need to polish the metal tube further, it was fine with only one bush going over it, but both just seemed to resist alot more.
I seriously thought the Spring would just ping out really fast and braced everything I could to stop it and it just went... limp and collapsed upon itself (never thought it would do that).

So tomorrow morning I'll build it all back up and hope I've done it right.
O yea, as a side note, wear a face mask when using Epoxy/Aralidite... It isnt half fumey!
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Offline Rodamus_Zero

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Re: Epoxy bonding of plastic bushes
« Reply #18 on: August 27, 2008, 04:37:29 PM »
Woot! My Bocks are all silent now  :thumbs:
While I was rebuilding them, I forgot the plastic spacer... which then didnt fit in place, a quick run over with the Dry and Wet sorted that out.

Put them on and immediately noticed the difference, not only had the annoying clank gone but I was getting more hieght and power out of the spring!
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Offline Rodamus_Zero

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Re: Epoxy bonding of plastic bushes
« Reply #19 on: August 28, 2008, 05:59:46 PM »
Well, Im not a happy bunny or Bocker at the moment.

I was out on my nice silent stilts and then I heard a clank :banghead:
Thought to my self, It couldnt be what I've just glued up...

Sure enough... It was :banghead:
Ive either not polished the metal tube out all the way as there is a bit of resistance on one end with both bushes going over it, I didnt reem out the insides of the bushes (I dont have one yet...) or Ive not mixed the aralidite correctly as it just seemed to peel away after I took the bracket apart again.

Needless to say, while they were in a silent state, I was getting more hieght, great feeling... then after the clank... it just felt like a dream  :'(
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Offline bobw

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Re: Epoxy bonding of plastic bushes
« Reply #20 on: May 19, 2009, 01:24:25 PM »
I know its an old thread but its been about a year since I bonded my bushings, Had my stilts apart to change springs this weekend (Note to self Dont lend stilts to Paul Self again)checked the bushings and there is hardly any wear at all, It is definately worth taking the time to do this mod.

Offline Paul-Self

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Re: Epoxy bonding of plastic bushes
« Reply #21 on: May 19, 2009, 05:17:16 PM »
hmmmm im pretty sure u were due a spring change! so you got a free spring out of it :P that was 1 unlucky 20 mins tho how can 2 springs break that quick :( expensive much!

Offline lynch

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Re: Epoxy bonding of plastic bushes
« Reply #22 on: May 19, 2009, 06:12:42 PM »
im sure you will live paul  :Ctongue:

Offline Chalmeristen

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Re: Epoxy bonding of plastic bushes
« Reply #23 on: December 22, 2011, 10:58:03 AM »
Hi all!

I know this a really old thread but I want to know if this is of interest for the new model of PJ's.

I'm now on PJ EXO Pro CZ90's and I feel that they start to rattle due to worn down plastic bearings.
Does anyone else have rattles in their joints? Has anyone done this mod on the new model? Does it work?

Oh, and Merry Christmas to all of you!  :Cwink:

/Peter
I'm the founder of West Coast Bockers in Gothenburg Sweden

Offline Jason

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Re: Epoxy bonding of plastic bushes
« Reply #24 on: December 22, 2011, 02:45:24 PM »
Good point mate

I don't have any rattle in my ones due to doing just this on all of them

You have to be a bit careful to align them right and not get glue on the wrong bits but it works well for the CZ's

Jason  :Hoofies2: :CGEEK: