I've been cleaning up my spare trailing arm ready for new bushes ( those 3M stripping discs work better than sand blasting ! ) and I was interested to note that where the lower shock absorber bolt goes, the arm has a couple of indentations pressed in to it to widen it at this point. Having had one fail here in the past I was wondering if these indentations may contribute to future failure. Certainly you can clearly see the " press tool marks" ( I think that is what they are called).
Anyway I was wondering about getting a wide fillet of weld run down each side, where the little sticky arrows, are just to strengthen them a bit.
Is this worth it do you think ?
Thanks,
Tony.
Trailing arm refurbishment.
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MIG Wielder
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Trailing arm refurbishment.
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matt of the vivas
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Re: Trailing arm refurbishment.
I wouldnt run a straight line of weld along the line - you will just create two new weaknesses, one either side of the weld. You could box the top of the mount with a short tapered plate, from the top of the bush mount down to the start of the rolled over section next to the shock mount.
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Jon Tilson
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Re: Trailing arm refurbishment.
Funny that....TR7 ones have a plate on top that also acts as a spring pan IIRC.
Great minds...
Jonners
Great minds...
Jonners
Note from Admin: sadly Jon passed away in February 2018 but his humour and wealth of knowledge will be fondly remembered by all. RIP Jonners.
Re: Trailing arm refurbishment.
if this helps,, i found this picture but cant remember where
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Dolomite 1300,1980`V`reg in british racing brown(russet),3.63 diff with 21t speedo pinion,95%poly`d,HL clocks,standard wheels with SE covers wrapt in 175 70 13,mot`d 19-09-2014,been off the since 1990,(july2017) stainless steel exhaust 3-piece,(xmas2018) wooden mountney steering wheel,(june2020) new monroe shock(radial front,gas-matic rears) with -1" lower`d springs all round.
Re: Trailing arm refurbishment.
How do you attached the rear antiroll bar with a plate welded all the way along the arm?
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whydidistartthis
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Re: Trailing arm refurbishment.
Longer bolts, and some suitable tubing.PaulB wrote:How do you attached the rear antiroll bar with a plate welded all the way along the arm?
The ones I have, have the tubing attached, but not entirely sure how!...
Re: Trailing arm refurbishment.
To my eyes boxing it in like that makes it worse in the area Tony has highlighted. It cannot flex along so much of it's length any flex has to be accomodated by the open section. With poly at both end the flex in the joints is reduced meaning the open section gets even more work to do.
I would think the places to box are where the sides of the channel are not parallel; The first two inches or so forward of the shock and anything you can get behind it as Matt said.
I would think the places to box are where the sides of the channel are not parallel; The first two inches or so forward of the shock and anything you can get behind it as Matt said.
1978 Pageant Sprint - the rustomite, 1972 Spitfire IV - sprintfire project, 1968 Valencia GT6 II - little Blue, 1980 Vermillion 1500HL - resting. 1974 Sienna 1500TC, Mrs Weevils big brown.
Re: Trailing arm refurbishment.
I did weld plates around the side where the shock is in and the rubber bush, axle side. Will post some pics when i have time.
Jeroen
Jeroen
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