Jump to content
SAU Community

Bushes

djr81
 Share

Recommended Posts

BHDave Grand Master

BHDave

Posted
Posted

poly is a 2 part and once it sets it will burn, but not melt.

You need to buy a kit but i have no idea where you could get automotive grade stuff. There's plenty of hobby type stuff about but it is way too far up the scale to be useful as a bush

Link to comment
https://www.sau.com.au/forums/topic/218815-bushes/#findComment-3860292
Share on other sites
WRRR Rising Star

WRRR

Posted
Posted

There are a number of castable polyurethanes. Normally a 2 part mix and not hard to use.

I have made a few rollers and such before in the backyard.

Getting the right spec poly may be the tough bit for bushes.

There is a mob in Armadale (yes WA Richard) called APT (Advanced Polymer Technology) who may be worth a call or ERA Polymers who are a supplier of polymers.

Cheers

Link to comment
https://www.sau.com.au/forums/topic/218815-bushes/#findComment-3861929
Share on other sites
Sydneykid Grand Master

Sydneykid

Posted
Posted

In simple terms, suspension bush quality polyurethane is a multi part mix, climate controlled environment, exact quantities, accurate baking oven for controlled temperature and time. The formulas for different duros (hardness) are proprietory.

I have made bushes in the past from a slug of polyurethane that is lathed like wood, you "cut" it, you do not "machine" it like metal. I haven't had to do that for years, there are so many sizes and shapes available I simply haven't found it necessary to make them. If you want to send me the measurements of what it is you require, I have the dimension data from all of the bush manufacturers, most times I can find something that will do the job.

Cheers

Gary

Link to comment
https://www.sau.com.au/forums/topic/218815-bushes/#findComment-3862271
Share on other sites
djr81 Grand Master

djr81

Posted
  • Author
Posted (edited)

Thanks gents for the help.

Duncan:

Used nylon on the last set of bushes I had machined up. May do so again as it works a treat.

Wayne:

WA you say. Wow.

Gary:

Drawings and photos attached. Note that the bearings listed were removed from the arms, hence the need for bushes (I didn't want to use bearings). I was thinking that a washer behind the centre sections may help the bush live a longer life.

From trying to get poly machined (bored actually) before usually it comes back a bit of a mess. Not confident that it can be done & retain proper dimensional control. Anyway, hopefully it wont come to that.

Cusco_arms.PDF

Bushes_for_cusco_arms.PDF

post-5134-1210658207_thumb.jpg

Edited by djr81
Link to comment
https://www.sau.com.au/forums/topic/218815-bushes/#findComment-3862804
Share on other sites
Sydneykid Grand Master

Sydneykid

Posted
Posted
Thanks gents for the help.

Duncan:

Used nylon on the last set of bushes I had machined up. May do so again as it works a treat.

Wayne:

WA you say. Wow.

Gary:

Drawings and photos attached. Note that the bearings listed were removed from the arms, hence the need for bushes (I didn't want to use bearings). I was thinking that a washer behind the centre sections may help the bush live a longer life.

From trying to get poly machined (bored actually) before usually it comes back a bit of a mess. Not confident that it can be done & retain proper dimensional control. Anyway, hopefully it wont come to that.

I am not at my reference PC to check until tomorrow morning, but my guess would be that the step in the bush (where the bearing used to sit) is an issue. I suspect that we will find it easier to find a bush if you say wrapped 12 mm wide x 2mm thick alloy around the bush end to consume the space. Then the bush itself would be a straight 36 mm.

Cheers

Gary

Link to comment
https://www.sau.com.au/forums/topic/218815-bushes/#findComment-3863082
Share on other sites
WRRR Rising Star

WRRR

Posted
Posted
Thanks gents for the help.

Duncan:

Used nylon on the last set of bushes I had machined up. May do so again as it works a treat.

Wayne:

WA you say. Wow.

Gary:

Drawings and photos attached. Note that the bearings listed were removed from the arms, hence the need for bushes (I didn't want to use bearings). I was thinking that a washer behind the centre sections may help the bush live a longer life.

From trying to get poly machined (bored actually) before usually it comes back a bit of a mess. Not confident that it can be done & retain proper dimensional control. Anyway, hopefully it wont come to that.

Takin the piss Richard - I know how hard it can be to find something different when you are stuck in the boonies. I mean you could go down to Bunbury Plastics or then again maybe not.

How's the t/case fix going?

Link to comment
https://www.sau.com.au/forums/topic/218815-bushes/#findComment-3863331
Share on other sites
djr81 Grand Master

djr81

Posted
  • Author
Posted
Takin the piss Richard - I know how hard it can be to find something different when you are stuck in the boonies. I mean you could go down to Bunbury Plastics or then again maybe not.

How's the t/case fix going?

Yeah, I know. But last time I went down to *insert name of random plastic shop in regional WA so as to not violate forum rules* they weren't very helpfull. Had the last lot of bushes turned up out of nylon by the machine shop next to Adrenaline. May end up doing so again.

Transfer case may be ready either next week or the one after that.

4WD controller turned up yesterday, so atleast something is going right.

Link to comment
https://www.sau.com.au/forums/topic/218815-bushes/#findComment-3864830
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Roy
      Ben's R32 Gtst Build

      By Roy · Posted

      Old Son, did you re-use the Holden ABS in the new shell or try a different module?
    • GTSBoy
      Another little story of weird shit happening

      By GTSBoy · Posted

      Yeah, nah. I had the actuator rod off it today. The arm will not move at all. Neither out, nor in. Yeah, you'd think so, but I've been thinking about that. Even when the actuator rod fell all the way off at the beginning of this saga, it would build more boost and faster in lower gears than it would in higher gears, and you'd think that that was the opposite of what should happen. But I strongly suspect that there is a thing with the gearing getting the revs to rise faster, that there must be some transient effect with the gas flow rate rising quickly, that you don't get with the more steady state case of the higher gears. Keep in mind - the gate is not shut in either of my weirdnesses. So things are not "normal". We normally think about a turbo spooling up (below the wastegate target) with the gate shut. I have all sorts of mental models running now where the gate is a little bit open, and having it stuck open allowing gas out while it should be going through the turbine has all sorts of weird effects (in these mental models). I'm thinking in the higher gears, the ex mani pressure builds to the point where enough gases spill out the wastegate to just prevent the pressure rising much more at all, or just creeping up, all the whole the revs are increasing and getting closer to the point where a gear shift becomes necessary.
    • MBS206
      Another little story of weird shit happening

      By MBS206 · Posted

      Is it possibly wastegate actuator itself is sticking, or even the rod to flapper? Otherwise I reckon things are getting a bit rusty/worn   Also odd it won't boost in 3rd to 5th, but will in 1st, I'd expect the other way around with it slightly open as there's more time on your way to redline for it to spin up
    • Shizu
      Returning after a long time!

      By Shizu · Posted

      Does anyone know ow what these two plugs are for and if they should be unplugged? Just put the dash back together and can't remember if these were plugged in before or unplugged! (Blue and white plugs) 🤦🏽‍♂️
    • dbm7
      Looking for a part number for this part here

      By dbm7 · Posted

      Did some FASTing ...got the impression that the actual part# was a moot point ; seems all of these hardlines for coolant are discontinued/NLA... like, I take it you're after the hardline that bolts onto to the manifold...that's NLA according to amayama & nengun .... ...just to clear up some confusion, they typically mounted the AAC valve to the intake manifold somewhere near a coolant passage, so the body of the valve heats up & holds it open when engine's up to temp - no coolant flows through the valve, it's a mechanical, thermal connection.
×
×
  • Create New...