good point Jim, and I had considered this happening as a possibility, however I had reasoned with myself that the original bushes I took out had the inner steel pivot vulcanised to the bush itself so any considerable movement would translate to the outer portion of the bush rotating within the arm, further to this the bushes im fitting are only a light press fit into the arm but a very tight fit onto the inner pivot, even prior to turning the inner pivot down (which I did yesterday prior to reading your post, oops) it still spun the bush within the arm as opposed to spinning the bushes on the pivot, mind you this is with the whole assembly greased up, maybe if I degrease the inner surface of the arm and outer surface of the bush but keeping the inner pivot and outer portion of the bush greased I may be able to induce enough friction to rotate the bush on the inner pivot, ill build it up later and see for sure.
cheers for your input mate, much appreciated On 14 Sep, 09:04, Jim Hearne <[email protected]> wrote: > I wouldn't take material off the centre bush. > It's almost certainly designed that length to make sure the bushes > aren't pinched so that the bushes move with the arm and rotate on the > centre bush. > If you shorten the pin almost certainly the bushes will stay still and > rotate in the hole in the arm, the arm is steel and will rust once the > bush wears the paint off, this will then wear the bush. > The centre pin is stainless. > > If you need to increase the space for the bushes slightly you can thread > a length of M10 studding through the bracket in the chassis, through a > thick washer, 2 nuts, another thick washer and the other hole in the > chassis. > Then wind the nuts away from each other spreading the bracket on the > chassis slightly. > You will need to go over what you need as it will spring back a fair bit. > > Jim > > On 13/09/2010 20:02, jin wrote: > > > > > great minds think alike, ive a 2mm gap but ive only got 1.5mm thick > > repair washers and ive got stainless too, they are the same O.D as the > > bush sides but total 3mm overall.... > > > however further investigating shows the inner bush pivot to be about > > 0.7mm wider than the bushes themselves (these are poly bushes which > > come apart) so if I turn off 1mm from the overall length of the bush > > pivot I can use 2 stainless washers either side which will give a > > little nip to the bush to keep it firm. > > > ill try it out and report back later > > > cheers guys > > > On 13 Sep, 10:23, Jim Hearne<[email protected]> wrote: > >> I agree, if there is that gap then you should fit some spacing > >> washers, i'd use stainless steel or they will rust and wear the bushes. > >> Maybe Quantum changed the part or maybe it's just production tolerances. > >> Mine have always been a tight but possible fit. > > >> Jim > > >> On 12/09/2010 22:39, jin wrote: > > >>> just checked > >>> the inner pivot bush is 51.2mm > >>> and the inner dimension of the lower arm pickup is 53.1mm > >>> so i need 2x 1mm thick spacers to go either side,..... > >>> On 12 Sep, 20:17, jin<[email protected]> wrote: > >>>> hmm, to pinch ot not to pinch? > >>>> there is definate pinching going on here on mine, luckely ive only > >>>> fitted one side, > >>>> ill measure up the upper portion of the box and measure up the length > >>>> of the inner track bush which should give me a distance, if its > >>>> greater than 2mm ill shim it either side > >>>> cheers for the input > >>>> ill keep you posted > >>>> On 11 Sep, 22:10, Jim Hearne<[email protected]> wrote: > >>>>> I've built or rebuilt 3 2+2's and none have washers there or > >>>>> noticably > >>>>> pinched. > >>>>> They have always been a very good fit on the bushes for me. > >>>>> Jim > >>>>> On 11/09/2010 21:55, hansdefauwes wrote: > >>>>>> I remember putting a washer in. > >>>>>> either a washer or pich it - so I chose for a washer. > >>>>>> Hans > >>>>>> ----- Original Message ----- From: "Jim Hearne"<[email protected]> > >>>>>> To:<[email protected]> > >>>>>> Sent: Saturday, September 11, 2010 10:47 PM > >>>>>> Subject: Re: [Quantum Owners] inner track arm bush spacer? > >>>>>> No, there aren't any spacers or washers in there normally. > >>>>>> Jim > >>>>>> On 10/09/2010 18:23, jin wrote: > >>>>>>> hi all > >>>>>>> the 2+2 is coming along nicely with only a few small jobs left before > >>>>>>> I turn the key, > >>>>>>> today was suspension bolting on day, > >>>>>>> I remember when I stripped the car I noticed that the box section > >>>>>>> where the inner pivot bushes for the lower arm seemed a little > >>>>>>> "pinched" inwards, almost as if the bush was too short or the box > >>>>>>> section was too wide between side to side. > >>>>>>> today ive fitted up the new arm with new poly bushes and it was a sung > >>>>>>> fit within the box section implying that this bush is the same size as > >>>>>>> the old one but the box section still looks pinched in slightly. > >>>>>>> should there be a spacer between both or one side of the bush?, it > >>>>>>> looks like a 3mm shim would do it but I don't want to do something I > >>>>>>> shouldn't. > >>>>>>> has anyone else had such issue or noticed this? > >>>>>>> cheers all.- Hide quoted text - > >>>>> - Show quoted text -- Hide quoted text - > >>>> - Show quoted text -- Hide quoted text - > >> - Show quoted text -- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. 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