The Triumph Dolomite Club - Discussion Forum

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 Post subject: Radius rod bush order
PostPosted:Sun Jan 19, 2020 1:19 pm 
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Hi, is this the correct order ?
Thanks, Richard


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PostPosted:Sun Jan 19, 2020 4:55 pm 
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This might help on page two;

https://forum.triumphdolomite.co.uk/dow ... p?id=11077


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PostPosted:Sun Jan 19, 2020 7:25 pm 
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Thanks for that Bush.

I’m not doubting you, but seems counterintuitive ?

Any other thoughts ?

Cheers, Richard


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PostPosted:Mon Jan 20, 2020 11:28 am 
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That looks correct. There should also be a nylon washer either side of the axle bracket...

https://rimmerbros.com/Item--i-158836

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PostPosted:Mon Jan 20, 2020 9:16 pm 
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Quote:
That looks correct. There should also be a nylon washer either side of the axle bracket...

https://rimmerbros.com/Item--i-158836
The drawing in the factory instructions quoted above by Bish - and my own experience - say there is only one nylon washer per side, that being on the rearmost face of the axle bracket. Who knows why? In any case, I nearly always fit poly here (unless told otherwise by the customer) which makes the nylon washer irrelevant.

Steve

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PostPosted:Mon Jan 20, 2020 10:35 pm 
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The curved side of the bushes should be outermost as shown in bish's link. Convex bush surface to convex washer surface. This makes the bushes act progressively to forces in the line of the tie bar.
With the bushes set curved side to the axle seems logical for centering but focuses the forces on a small circle of the bush surface. The cups on the axle provide centering.

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PostPosted:Fri Feb 26, 2021 4:03 pm 
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Could I enquire with the wider community please as to why when using poly bushes, the nylon washer in not required?

I ask out of curiosity.......the poly bushes I have bought from Chris Witor appear to have an edge to them where the washer would sit. Please see pic of my new bush and old bush with plastic washer. And t made me curious to understand the reasoning before I put the tie bar back into the car this weekend...

Thanks...


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PostPosted:Fri Feb 26, 2021 8:32 pm 
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Looking at the photograph on the right it looks as if it bush has a metal bush in its middle, if this is the case it is definitely not the correct item, also the centre hole in the flat nylon washer should only be just big enough for the radius rod to pass through it so again it is not the correct item. It might be a damaged nylon bush which has been reused as when I have stripped a number of 1500 rear axles I have often found that the rubber bush has punched a hole the size of the rear axle mounting hole in the nylon washer.

I have stripped a number of rear axles which have had polyurethane bushes fitted and I have noticed that they have started to take up the shape of rear axle mounting hole, so my assumption is that the new Superflax polyurethane has been produced with this shape either on purpose or by just copying a used bush. Can you please measure the diameter of the raised section on the new bush and see if it is the same size as the hole through which the radius rod goes which is 1.25 inches. The mounting plate is about ¼ inch thick so the raised section could be up to 1/8 inch.

I have taken a number of photographs that show the size of the Radius rod hole mounting on the axle, How a nylon washer fits into the mounting arrangement if a rubber bush is being used and the final photo shows on the LHS a old bush that has started to take up the shape of the mounting arrangement.

I will also post once again the text that shows the fitting details.

https://forum.triumphdolomite.co.uk/dow ... p?id=11077

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