trunions or what?

Post by **brixtonmorris** » Tue Oct 28, 2003 9:54 pm

when it goes around a corner the rear plate rubbers only take compression/decompressiondepending on whatever side they are on.
most of load goes through the locating lug on the underside of axle casing, and the rear shock mounting plate, the u bolts, which are locked in position. the rubber just sits in the middle being a cusion. it has no moving metal to deal with, unlike the eye bolt rubber that has the pin moving inside as sus goes up and down, applying a radial load on the top hat rubber, which wears it out. lot of washing up liquid when assembling

Post by **Kevin** » Wed Oct 29, 2003 9:25 am

But why does the eyebolt only wear on one side must be due to the forces involved, its an old dodge to turn in 180% to make it last a bit longer.

Post by **rayofleamington** » Wed Oct 29, 2003 9:47 am

why does the eyebolt only wear on one side

because the weight of the car is sitting on it - gravity only works in 1 direction.

Post by **Kevin** » Wed Oct 29, 2003 11:11 am

Thanks Ray that also explains why the drivers side one was worse than the passenger side one on my car.

Post by **Cam** » Wed Oct 29, 2003 11:36 am

when it goes around a corner the rear plate rubbers only take compression/decompressiondepending on whatever side they are on.

Yes, the plate rubbers do take compression / decompression but the force is felt throughout the suspension, all the way from the tyre up to the spring hangers on the floorpan / rear chassis rails. Also both sides are affected as the car body tries to move sideways away from the axle and the two springs (4 mounting points) are trying to stop it.

lot of washing up liquid when assembling

Yes! they can be a pig to assemble, especially the poly ones. But I have never used washing up liquid although I understand that a fair few people have.

Post by **Kevin** » Wed Oct 29, 2003 11:48 am

I have never used washing up liquid

What are the plates like at your place then

Neither have I Cam but I have used swarfega that was a common engineering trick as it does not harm rubber which some washing up liquids do, which as Brixton recommends only use Fairy liquid as it does not harm rubber components.

Post by **rayofleamington** » Wed Oct 29, 2003 11:53 am

Fairly liquid isn't the same as it used to be! :-S
I hope they've not added any nasty things to it that affects suspension rubbers.
Maybe I'll get some swarfega as well.

the drivers side one was worse than the passenger side one

Quite likely that a trunnion has been replaced so the rubbers are not the same age between passenger and drivers side, but they will wear differently depending on how well they are installed and also due to the condition of the surrounding metal bits.

Post by **Cam** » Wed Oct 29, 2003 12:02 pm

What are the plates like at your place then

We're Stokeys and we lick them clean!! no need for fancy washing up liquids!!

Post by **Kevin** » Wed Oct 29, 2003 12:27 pm

Thanks for that Ray so size of driver has nothing to do with it, thats a relief.

Post by **brixtonmorris** » Wed Oct 29, 2003 6:35 pm

where did i say it dosent harm rubber, any tepol will do for the bushes. fairy is the best for making bubbles. very important for sanding paint.

Post by **les** » Wed Oct 29, 2003 10:03 pm

I understand that fairy liquid contains salt. True you didn't say it doesn't harm rubber, brixton, but you did say use a lot of it! which seems to imply you don't think it does harm! wd40 works great, and sofar have not seen a downside.

Post by **brixtonmorris** » Wed Oct 29, 2003 10:14 pm

hi les i wonder if the salt is the reason why it cuts paint so well. see dis about respray

Post by **les** » Wed Oct 29, 2003 10:21 pm

It's a thought! Not been able to confirm this salt thing though.

Post by **Kevin** » Thu Oct 30, 2003 1:35 am

where did i say it dosent harm rubber,

You didnt but you did say

lot of washing up liquid when assembling

So I just made the point that if using washing up liquid you should only use Fairy liquid, as there was an article a few years ago about using washing up liquids for car washing and it was revealed that other washing up liquids were likely to damaged wiper blade rubbers and also windscreen rubbers in the long term because none of them were as mild as Fairy liquid.

Post by **Rasputin** » Thu Oct 30, 2003 6:10 am

So, kind to your wiper blades as well as your hands!!!

Post by **ColinP** » Thu Oct 30, 2003 1:26 pm

From my lab experience, the most common detergent is sodium lauryl sulphate - i.e. it's the cheapest!

Just about all the common detergents will have this in large quantities (5-15%), diluted with water. Unfortunately, adding the water makes it thin and runny. The solution is to add sodium chloride (salt), which makes the solution thicker (ok, add too much and it goes thin again), so most household detergents (and shower gels) contain a quantity of salt.

For washing up (and personal use) this isn't important, and the manufacturers add other things as well (e.g. preservative, perfume, other detergents etc. etc - read the label). For cleaning cars it's much better to avoid these detegents - the car accessory shops see car cleaning detergents which don't have salt added (as far as I know - read the label!), so they are much kinder to the body work (and of course, more expensive per 100 ml).

Teepol (if I recall correctly) doesn't have salt at all (but where do you get it?)

Colin