Wishbone Bush Press group buy

[lotusandy]

I am about to renew the bushes on my Chim, and am going to get a tool made up to press the bushes out based on the design at the Griffith pages, I am sure it will be cheaper to get several made up rather than just my one.
Is anyone else interested in one? I will try to get some prices in the week.
lonk here.. http://www.thegriffithpages.com/index.php?option=c...

Andy

[HRG.]

Make sure you get some "10 grade" M10 threaded rod

[Mr Plow]

I could be interested in one of these.

[shpub]

I prototyped this as I had been asked about putting it into production but to be honest, my experiences with it were not good. I snapped 12.9 grade bolts and ended up making two: one to bush out the rubber and inner sleeve and a second then to push out the outer sleeve. Doing it in two stages allowed me to use a M16 bolt with the outer sleeve. Still managed to bend the bolt though. Some sleeves still didn't move even with me using a 3 foot breaker bar to tighten the bolt up!

If the bushes cooperate then it works, but if they don't, nothing less than a press and the appropriate dies will do the job or its out with the hacksaw!

Edited by shpub on Sunday 1st November 22:39

[HRG.]

shpub said:

I prototyped this as I had been asked about putting it into production but to be honest, my experiences with it were not good. I snapped 12.9 grade bolts and ended up making two: one to bush out the rubber and inner sleeve and a second then to push out the outer sleeve. Doing it in two stages allowed me to use a M16 bolt with the outer sleeve. Still managed to bend the bolt though. Some sleeves still didn't move even with me using a 3 foot breaker bar to tighten the bolt up!

If the bushes cooperate then it works, but if they don't, nothing less than a press and the appropriate dies will do the job or its out with the hacksaw!

Edited by shpub on Sunday 1st November 22:39

Technique is everything

[eliot]

I used a 10 ton Clarke press to get some griff ones out - IIRC it took about 5 tons of pressure to break them free, so I'm not suprised you broke a bolt. If you are in the Milton Keynes area I can be talked into doing them:
http://www.mez.co.uk/dcam/DSCF1104.JPG

[Tanguero]

On my Cerbera even my 20 ton press struggled with one or two of the bushes.

I tried the type of extractor mentioned and had zero success with it, bending or snapping a few fairly substantial high tensile bolts in the attempt.

In my experience a press is the way to go, the bigger the better!

[lewis_sharman]

I had a good success rate with the tool i made up, was basically just a solid steel drift, and by the end of it still looked like a mushroom

I will find the thread where i made the drawing

ETA

http://www.pistonheads.co.uk/gassing/topic.asp?h=0...

Edited by lewis_sharman on Monday 2nd November 13:42

[Shabs]

let me know prices please

[HRG.]

The secret (apart from lots of grease and keeping the threads clean) is to use percussive force as well as compression. It's the vibration that helps to break the stiction which is holding them in place.

[shpub]

HRG. said:

The secret (apart from lots of grease and keeping the threads clean) is to use percussive force as well as compression. It's the vibration that helps to break the stiction which is holding them in place.

Obviously my 7lb hammer wasn't percussive enough!

[ray_von]

I can see the uses of this to do the 3 in the rear hub, but once the wishbones are off it's no hardship to remove the rubber inserts with a holesaw and then hacksaw the shells and drift out. It's only about 5 mins or less per bush. Just my opinion.

[tuscan_al]

I bought one of these to use, hoping it works as going to be doing all the rear wishbone and upright bushes soon..

http://cgi.ebay.co.uk/BRITOOL-VOID-BUSH-REMOVER_W0...

or maybe? ...

http://cgi.ebay.co.uk/Universal-void-bush-puller-t...

[HRG.]

shpub said:

HRG. said:

The secret (apart from lots of grease and keeping the threads clean) is to use percussive force as well as compression. It's the vibration that helps to break the stiction which is holding them in place.

Obviously my 7lb hammer wasn't percussive enough!

I found that a 2lb works best, you can get a nice sharp crack that gets the bush moving.

[Tanguero]

tuscan_al said:

I bought one of these to use, hoping it works as going to be doing all the rear wishbone and upright bushes soon..

http://cgi.ebay.co.uk/BRITOOL-VOID-BUSH-REMOVER_W0...

or maybe? ...

http://cgi.ebay.co.uk/Universal-void-bush-puller-t...

You should have said, you could have had mine. Its perfect apart from a stretched and snapped bolt...

[roysum]

shpub said:

I prototyped this as I had been asked about putting it into production but to be honest, my experiences with it were not good. I snapped 12.9 grade bolts and ended up making two: one to bush out the rubber and inner sleeve and a second then to push out the outer sleeve. Doing it in two stages allowed me to use a M16 bolt with the outer sleeve. Still managed to bend the bolt though. Some sleeves still didn't move even with me using a 3 foot breaker bar to tighten the bolt up!

If the bushes cooperate then it works, but if they don't, nothing less than a press and the appropriate dies will do the job or its out with the hacksaw!

Hi Steve, I think it may have been me that suggested you market them. That's unfortunate it didn't work out. Having now changed all the bushes on my car using the drill and hacksaw method. it really wasn't to bad.
RIP

Edited by shpub on Sunday 1st November 22:39

[shpub]

Not a problem. I was using them to fit a prototype set of poly bushes to a Tuscan so it was one of those projects that covered several things at once. The bushes seem to have been a success so not a total failure

Ended up using a press for most of them and the hacksaw method on the hub ones. As I said, when it worked it was good, when it didn't it didn't. A lot does depend on the state of the bush and in particular whether it has rusted in place.

[tuscan_al]

shpub said:

Not a problem. I was using them to fit a prototype set of poly bushes to a Tuscan so it was one of those projects that covered several things at once. The bushes seem to have been a success so not a total failure

Ended up using a press for most of them and the hacksaw method on the hub ones. As I said, when it worked it was good, when it didn't it didn't. A lot does depend on the state of the bush and in particular whether it has rusted in place.

Polybushes for tuscan , how are they going, need a test car? I want to change all my bushes on supension and wishbones.

[shpub]

tuscan_al said:

Polybushes for tuscan , how are they going, need a test car? I want to change all my bushes on supension and wishbones.

They have been fitted to a couple of cars now and the feedback has been very good. I physically changed them all on one of the cars so that I could make sure they fitted correctly with no problems. And no I'm not offering a service! Once was enough...

The Tuscan polybush deals are now live on the website.

[tuscan_al]

Thanks Steve, will take a look on the site, and no doubt order them.