scar
New Member
Posts: 19
|
Post by scar on Jun 23, 2012 20:43:16 GMT
Dont think polybushes are meant to be greased other than a little to assist in assembly i.e. when pressing in. I thought the whole point of them is that the polyeurathene material is described as self lubricating. If you do decide to fit grease nipples remember that the poly bush isnt intended to move in its housing its the inner crush tube that moves in the poly bush, bear this in mind when fitting the nipples or you will be greasing the wrong area.
With greatest respect to your uncle I suspect the beneficial grease nipples on the vehicles refered to will not be lubricating kit car type poly bushes, of course I could be wrong. If you are still unsure ask advice from the people who make the bushes. (and let us know)
Cheers
Steve
|
|
scar
New Member
Posts: 19
|
Post by scar on Jun 23, 2012 21:19:11 GMT
Hi mate, I put grooves and grease nipples in mine to hopefully save on maintenance after. Mark I trust you dont mean grooves in the outer circumferance of the poly bush as this is suposed to be a tight non moving fit in its housing. I supose you could groove the inner bore but if this was beneficial I am sure they would manufacture that way. Also I think you will need to use a poly specific lubricant not automotive grease. Cheers Steve |
|
|
|
Post by markharnett on Jun 23, 2012 21:34:31 GMT
Hi Scar,
No, they are small grooves on the inner surface of the bush. This is to allow the grease to go between the inner bush and the crush tube.
The bushes don't move in the housing at all.
Do you know of any grease that is specifically for poly bushes?
Sent from my GT-I9300 using ProBoards
|
|
froggy999
Full Member
Go Hard or Go Home...
Posts: 343
|
Post by froggy999 on Jun 23, 2012 21:50:21 GMT
I have ordered the red grease, its mean to last longer than any other. I was gonna put some small grooves in the actual crush tube seeing as this is a lot stronger than the bushes which i dont want to weaken by cutting into them.
Wayne.
|
|
|
|
Post by paul (madeye) on Jun 24, 2012 7:46:32 GMT
i think.. and its just my little mind, that what were getting at is..
we know that the bush is not a wearing surface and is not designed to move, but from info of moggers, it does and this causes noise, we cant stop it moving, but the movement will cause friction. if we can relieve some of that with a little lube. the inner wearing surface will be dealt with too.
i would be intrigued if there is a usable grease which is compatable, ill have a google
|
|
scar
New Member
Posts: 19
|
Post by scar on Jun 24, 2012 8:02:44 GMT
Looked at Powerflex (one of the largest manufacturers) website. They claim polybushes will outlast standard bushes x 10. Cant find any referance to an appropriate grease, I know you can use copperslip on assembly.
I stll doubt there is any advantage to installing grease nipples, at least for the first 10 years or 60,000 miles
I'm not a fan of unqualified forum advice (especially my own) so will try to contact Powerflex next week and get their advice.
As you know we are instucting students how to assemble our own car so I want to make sure we make the right decisions on our own build
Cheers
Steve
|
|
froggy999
Full Member
Go Hard or Go Home...
Posts: 343
|
Post by froggy999 on Jun 24, 2012 8:23:30 GMT
Steve have you ever had a problem with your kit cars and the bushes in the past? Wayne.
|
|
|
|
Post by erik on Jun 24, 2012 13:36:53 GMT
Using grease on bushes depends on the material the bushes are made off. if the bushes are made of nylon it will expand on water alone and jam the movement. If one used a grease type not suitable for the material it could get brittle or very soft. I haven't planned to add grease nipples for now on my tr1ke project but it would be helpfull if RTR would give a proper advice on this subject.
I'll send a PM to your MEV dealer to contact RTR (That seems to be the correct route for issues in the Netherlands).
Regards,
Erik
|
|
|
|
Post by markharnett on Jun 24, 2012 14:25:06 GMT
|
|
jack
New Member
Posts: 23
|
Post by jack on Jun 24, 2012 16:33:32 GMT
|
|
scar
New Member
Posts: 19
|
Post by scar on Jun 24, 2012 17:00:28 GMT
Steve have you ever had a problem with your kit cars and the bushes in the past? Wayne. Since 1992 I've owned (not built) six Westfields an NGTC a Pilgrim Sumo a Sylva Stylus and a Luego Viento. Never had to replace or grease a polybush |
|
|
|
Post by erik on Jun 24, 2012 17:02:03 GMT
PU is not the same as PTFE (teflon). Not sure this is okay for our use. |
|
jack
New Member
Posts: 23
|
Post by jack on Jun 24, 2012 18:01:23 GMT
|
|
fossie
Junior Member
Posts: 75
|
Post by fossie on Jun 24, 2012 20:24:31 GMT
For what its worth - I've been suffering from squeaky bushes from day one. This weekend I noticed that the nuts and bolts keeping them in place were very tight - I've turned them back half a turn and they are now silent... It appears that the squeak was coming from between the mount on the chassis and the outer face of the bush - what a transformation - I hadn't realised how damaging the squeaking was to the driving experience!!
|
|
|
|
Post by erik on Jun 24, 2012 21:26:38 GMT
Just received confirmation from our Dutch distributor that the bushes need not to be greased.
regards,
Erik
|
|
The mobile version is somewhat shocking, and always asking for me to buy proboards for the iphone:(
If there is only one event you take your car to this year then believe me this is the one to go to. 