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Author Topic: bushes for trailingarm  (Read 9457 times)
Morten Blom
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« on: October 07, 2010, 12:09:55 pm »

Hi  Cheesy
I need some new bushes for the rear trailingarms on my Murena, i kan buy them i Germany, but the price is 133 € + postage Shocked

My question are therefore; Does anybody know, if there is bushes, from an other car, that fits? Smiley

Best regards Morten Blom, Dk
« Last Edit: October 07, 2010, 04:58:38 pm by Anders Dinsen » Logged
Oskar
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« Reply #1 on: October 09, 2010, 03:27:40 pm »

i believe you can have them machined in POM plastic for a much cheaper price. but it will be more suspension noise...  Wink

there no other car that shares these bushes as far as I can recal
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peugeot 205 gti
murena 1.6
Oetker
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« Reply #2 on: October 09, 2010, 05:53:28 pm »

At carjoy they are € 25.- a piece ex tax, and I don't think that it is expencive.
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I feel like Jonah, only my fish looks different.
Murena 2.2 Red 1982. Murena 1.6 black on places.
Morten Blom
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« Reply #3 on: October 11, 2010, 09:29:55 am »

Hmm okay, I thought they had been used in other cars too ..
But then there is nothing else than to pay Undecided

I can make them in POM, but I don't know if it will be good for the suspension..

Thanks for helping Smiley
Best regards Morten Blom
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Anders Dinsen
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« Reply #4 on: October 11, 2010, 11:28:32 am »

I can make them in POM, but I don't know if it will be good for the suspension..

GP commented on alternative materials for these bushes here:

http://www.matrasport.dk/forum/index.php/topic,1882.msg15446.html#msg15446
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'82 Murena 2.2 prep 142
'01 Grand Espace 24v
'08 Smart Fortwo 0,8 cdi
Bart_Maztra
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« Reply #5 on: October 11, 2010, 09:29:27 pm »

Make your own polyurethane bushes.

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Anders Dinsen
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« Reply #6 on: October 12, 2010, 08:52:56 am »

Make your own polyurethane bushes.

GP advices you NOT to try it (quote from the thread I linked below):

Quote
I am using standard matra components all round on the suspension. I once fitted solid P.T.F.E. bushes in the rear trailing arms, but found these too stiff and the rear would snap away instantly. With the Matra bushes you can feel the rear end going into oversteer and it gives you more drivability.
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'82 Murena 2.2 prep 142
'01 Grand Espace 24v
'08 Smart Fortwo 0,8 cdi
Morten Blom
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« Reply #7 on: October 12, 2010, 09:56:25 am »

Hi again  Wink

I've found this compound, an I think it will be good to make the bushes!  Roll Eyes
Here is the datasheet:
http://www.cablejoints.co.uk/upload/3M_Scotchcast_Resin_2130.pdf

And a dealer with an okay price on the product  Grin
http://www.amronintl.com/products.cfm?pageID=6478

I have a lathe in my garage so I can make the steelparts on my own, so I think I can make new bushes for a good price  Grin

Out and over Wink
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Oskar
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« Reply #8 on: October 14, 2010, 09:17:30 pm »

thats Acetal and its very hard. I dont know if its comon but one of the bushes inner ring is longer so it will allow the trailing arm to flex and steer. I guess its part of the geometry to give the arm more or less to-out when you turn to get a more safe rear end.  But that is with original tires and suspension.
If everything get upgraded and lower rear end I think it wont apply anymore
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peugeot 205 gti
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Anders Dinsen
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« Reply #9 on: October 15, 2010, 06:01:35 am »

You are correct, Oskar.

I actually think that it becomes even more important to retain the original soft rubber components with modern low profile tyres with stiffer carcass.

I'm repeating myself (or rather Graham's advice): Don't try this, stick to the original rubber bushes, or you'll quickly find your car's rear end snapping away. Unless you're sticking to old-lady driving, but who would do that in a Murena?

Matra engineers knew what they were doing when they designed the Murena.

/Anders
« Last Edit: October 15, 2010, 01:41:12 pm by Anders Dinsen » Logged

'82 Murena 2.2 prep 142
'01 Grand Espace 24v
'08 Smart Fortwo 0,8 cdi
Jon Weywadt
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« Reply #10 on: October 15, 2010, 12:54:44 pm »

Hi again  Wink

I've found this compound, an I think it will be good to make the bushes!  Roll Eyes


Oops. Wrote my post below from my iPhone and I coud not scroll to the bottom so my text got inserted in the quote above. But now I have cut it out and pasted it below.

Unless the compound has the same "shore" value as the original, i would not use it.

A different value changes the stiffnes and range of flex, thus changing the geometry of the suspension under load.

As Anders say, it is not adviced.
« Last Edit: October 17, 2010, 09:00:53 pm by Jon Weywadt » Logged

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