Phosphur Bronze Trailing Arm Shaft Bushes

[V8Pete 0]

I understand a common thing to do is replace the needle bearings with phosphur bronze bushes and grease nipples. I priced a set locally (they would have to be machined because the sizes are weird), and they quoted me NZ$350 (130 GBP). I would've fallen off my chair if I was sitting down.

 

I was wondering if anyone's had a bulk lot made up that they're trying to sell and/or what you pay for bushes in the UK. If it's a lot less than that, and freight's not a killer, I could be keen to buy some.

Edited April 17, 2007 by V8Pete

[welshpug 1,666]

cheaper to just replace the roller bearings every few years.

[pug_ham 245 3 Cars]

I've got them on my 309 beam, they cost me £10 for the pair but it was made by one of the mechanics at the local Pug specialists da on his home lathe.

 

He has since moved on & I haven't been able to track him down. I priced some at the local machine shop & they said if I could get the material they'd be able to make them for about £20 per bush iirc.

 

I went looking for some phosphur bronse last year but they didn't have anything big enough & wanted silly money for the pieces they had so I dropped the plan of making some more there.

 

Mine work ace though.

 

Graham.

[Rippthrough 98]

I've got them on my 309 beam, they cost me £10 for the pair but it was made by one of the mechanics at the local Pug specialists da on his home lathe.

 

He has since moved on & I haven't been able to track him down. I priced some at the local machine shop & they said if I could get the material they'd be able to make them for about £20 per bush iirc.

 

I went looking for some phosphur bronse last year but they didn't have anything big enough & wanted silly money for the pieces they had so I dropped the plan of making some more there.

 

Mine work ace though.

 

Graham.

 

My uncle machines bearings for a living if anyone has specifics I can supply him with...

[inferno 1]

id buy a set of these if i can be assured they'll last in a lowered 309 beam longer than needle bearings...

[pug_ham 245 3 Cars]

My uncle machines bearings for a living if anyone has specifics I can supply him with...

I'll pm you in the next day or two with some info.

 

Basically the same diamensions as the outer bearing though + a couple of thou & then hone them to get a decent fit if needed between the radius arm shaft & the bearing.

id buy a set of these if i can be assured they'll last in a lowered 309 beam longer than needle bearings...

There is nothing to seize up & if you occasionally grease them they stay smooth for ever. Even replacing the seals isn't needed as the grease can oush any water out.

 

 

 

Graham.

[welshpug 1,666]

that looks interesting graham, are they made to simply replace the roller bearings? any additional sticktion or do they move freely?

 

would definitely be worth doing a run of these if they work as well as the original bearings as 306's use the same bearing.

[PumaRacing 2]

Brass and bronze prices have been going through the roof recently. Even scrap is now worth £2/kilo. You don't ideally want to be buying solid bar at £15/kilo and machining 90% of it away. Starting from tube is a possibility if a suitable size is available but the other would be casting the bearings close to size and finish machining them. Obviously it all depends on volumes as to which option is most cost effective.

[PumaRacing 2]

You might want to speak to these people.

 

http://www.leedsbronze.co.uk/

 

Chances are they already have something very similar on the shelf that can be adapted and they'll be able to advise on material spec.

 

Their steel back sintered bushes look ideal, perhaps with grooves for grease retention.

 

http://www.leedsbronze.co.uk/bushes/lf

 

FYI at 25mm shaft diameter (I have no idea what the actual dimensions are) the surface speed at 7k rpm would be approx 3m/s which falls well inside the capability of this type of bush.

Edited April 18, 2007 by PumaRacing

[Ahl 4]

If someone wants to send me a pattern, I can have all of the PB bearings you like cast.

[Ryan 99]

Isn't this also a good fix for worn shafts, as the shaft surface is no longer the point of contact?

[Theo205 0]

^^^ good point....

[welshpug 1,666]

Isn't this also a good fix for worn shafts, as the shaft surface is no longer the point of contact?

 

 

eh? the shafts will always the be point of contact, these bushes simple go in place of the bearings

[Ryan 99]

eh? the shafts will always the be point of contact, these bushes simple go in place of the bearings

 

I was being a spaz and thinking that both the beam tube and the shaft had bushes fitted.

 

Still, with bronze bushes instead of bearings a worn shaft is much less of a problem.

[boombang 2]

Could maybe machine down worn shafts and oversize the bearings?

[PumaRacing 2]

If someone wants to send me a pattern, I can have all of the PB bearings you like cast.

 

If you can get them cast with say 1mm machining allowance inside and outside I can machine them easily enough. Not a complicated lathe job.

[inferno 1]

great... so the casting an machinings available... how about a group buy any time soon?!

[welshpug 1,666]

and while you're beavering away on the lathe how about a tool to install them

[PumaRacing 2]

and while you're beavering away on the lathe how about a tool to install them

 

Ah, you mean an "Anthony". I'll see what I can do

[welshpug 1,666]

Ah, you mean an "Anthony". I'll see what I can do

 

[fangio 1]

Boombang,

 

Unless using phoshur bronze bearings makes a difference you can't take the surface off the shafts as they are case hardened.

 

If someone could successfully produce these plain bearings I'd definitely be up for a set.

[Zealot 0]

I'd also be up for a set - at a guess Pete will be too.

[V8Pete 0]

I'd also be up for a set - at a guess Pete will be too.

Several even.

[pug_ham 245 3 Cars]

are they made to simply replace the roller bearings? any additional sticktion or do they move freely?

Yes & no, maybe an even better fit as you hone the bearing inner surafce so its a good fit once they've been knocked into the centre tube.

Isn't this also a good fix for worn shafts, as the shaft surface is no longer the point of contact?

You can use shafts that are scrap for use with standard bearings on these, you should see the state of the n/s one I've got on my car.

 

and while you're beavering away on the lathe how about a tool to install them

Same tool as needed for a standard bearing, a hammer.

If someone wants to send me a pattern, I can have all of the PB bearings you like cast.

Not to sure if I can get a pattern as they are a tight fit into the tuibe but a new outer bearing is a good enough cast imo.

 

I looked into getting tube a few years ago but iirc there wasn't anything suitabley sized for them.

 

Graham.