When upgraded ARB drop links don't help anymore...
Discussion
Finaly had the droplink mounting plates on the rear wishbones replaced (thanks to the Unipart deal, we can actually get replacements
). Not a moment too soon on the nearside one, either.This is the early version - later ones (replacements included) have deeper sides in the middle. Apparently you can clamp the new ones on using some sort of small exhaust clamp, but I chose to have them welded on like the originals.
Edited by 900T-R on Wednesday 10th June 13:18
900T-R said:
They're an official TVR part (part # **-100TV or something) that Multipart now makes, and cheap enough not to bother with trying to provide aftermarket ones TBH.
O/T do you still do the stainless steel dash panels?
ahhh - shall have to see if i can track the part down...i need to strip off the rear lower wishbone to free up the toe in/out adjuster anyway so it would be a good chance to replace the bracket.O/T do you still do the stainless steel dash panels?
yes i have got a couple in the garage but am moving on to other things soon...shall hopefully be getting an AC/DC tig set soon so i have got quite a few new things lined up...
Clevor Trevor do reinforced plates.
I had those welded on my wishbones and had 2 reinforcing plates made up and welded inside, they will never break now, stronger then the rest of the car!
I think that the Steve Heath drop links increase pressure on the mounting plates as they were fine last September when they were fitted.
Maybe TD's put extra strain on them?
P.
I had those welded on my wishbones and had 2 reinforcing plates made up and welded inside, they will never break now, stronger then the rest of the car!
I think that the Steve Heath drop links increase pressure on the mounting plates as they were fine last September when they were fitted.
Maybe TD's put extra strain on them?
P.
haircutmike said:
Clevor Trevor do reinforced plates.
I had those welded on my wishbones and had 2 reinforcing plates made up and welded inside, they will never break now, stronger then the rest of the car!
I think that the Steve Heath drop links increase pressure on the mounting plates as they were fine last September when they were fitted.
Maybe TD's put extra strain on them?
P.
No... quite the reverse. The problem is that the original design has no articulation and as the ARB moves it actually twists the plate which is why the early wishbones with no reinforcement were breaking very frequently. TVR then introduced the reinforced type and they are a big improvement. But the twisting does fatigue them and eventually they go. The problem is it can be difficult to see how much twisting and weakness has been introduced. The SHENG droplinks provide some articulation which removes the twisting and the fatigue but if the mounts have already been weakened, then the mounts may break anyway. I had those welded on my wishbones and had 2 reinforcing plates made up and welded inside, they will never break now, stronger then the rest of the car!
I think that the Steve Heath drop links increase pressure on the mounting plates as they were fine last September when they were fitted.
Maybe TD's put extra strain on them?
P.
haircutmike said:
Clevor Trevor do reinforced plates.
I had those welded on my wishbones and had 2 reinforcing plates made up and welded inside, they will never break now, stronger then the rest of the car!
I think that the Steve Heath drop links increase pressure on the mounting plates as they were fine last September when they were fitted.
Maybe TD's put extra strain on them?
P.
Just out of interest, the "before".I had those welded on my wishbones and had 2 reinforcing plates made up and welded inside, they will never break now, stronger then the rest of the car!
I think that the Steve Heath drop links increase pressure on the mounting plates as they were fine last September when they were fitted.
Maybe TD's put extra strain on them?
P.
shpub said:
No... quite the reverse. The problem is that the original design has no articulation and as the ARB moves it actually twists the plate which is why the early wishbones with no reinforcement were breaking very frequently. TVR then introduced the reinforced type and they are a big improvement. But the twisting does fatigue them and eventually they go. The problem is it can be difficult to see how much twisting and weakness has been introduced. The SHENG droplinks provide some articulation which removes the twisting and the fatigue but if the mounts have already been weakened, then the mounts may break anyway.
Indeed... when the technician at Nimag took the car in for the first time, he already made a note of the nearside droplink mount being decidedly dodgy in his engineer's report. I then ordered the droplinks as a 'while we're in there, anyway' thing - and to avoid a repeat performance as per the above. As both the downtime and bill for getting the car on the road and registered here was already reaching 
proportions the technician decided to save this particular repair for a later date - which ended up being now. So to reiterate, it was purely a matter of getting on top of remaining issues that I knew existed all along, and the purpose of this thread a reminder - if needed - to deal with small problems before they become bigger problems. With the mounting plate in the condition pictured, one can be sure that the rear ARB actually did very little positive anymore. The rear end feels loads tighter and more controlled after the repair.
Edited by 900T-R on Thursday 11th June 09:28
haircutmike said:
Check the angle of the anodised rod link, it should be in as close to vertical alignment as possible, if the bottom rod eye is connected to the outside of the ARB it would be better aligned and put less torsional loads into the rod eyes and mounting bracket.
Bluebottle said:
haircutmike said:
Check the angle of the anodised rod link, it should be in as close to vertical alignment as possible, if the bottom rod eye is connected to the outside of the ARB it would be better aligned and put less torsional loads into the rod eyes and mounting bracket.
Will check later if installed correctly, (fitted by a professional last year!).
Bluebottle said:
haircutmike said:
Check the angle of the anodised rod link, it should be in as close to vertical alignment as possible, if the bottom rod eye is connected to the outside of the ARB it would be better aligned and put less torsional loads into the rod eyes and mounting bracket.
hi there, my car doesnt have a rear ARB, it was removed by a previous owner.. so i dont know how its affecting the handling? Its a 500 so i dont push hard out of corners that often anyway as the rear end breaks away.. i only use the car in the dry. Would i benefit much by getting a rear ARB fitted?
mongo3528 said:
hi there, my car doesnt have a rear ARB, it was removed by a previous owner.. so i dont know how its affecting the handling? Its a 500 so i dont push hard out of corners that often anyway as the rear end breaks away.. i only use the car in the dry. Would i benefit much by getting a rear ARB fitted?
I broke an ARB mount during a track day once and it made a huge difference to the handling. Without it I was unable to get the power down exiting corners the way i was before it broke and was constantly lighting up the rear and power drifting out of corners (I thought I broken the LSD until i had a look underneath)...It was great fun but killed my tyres 
Bluebottle said:
mongo3528 said:
hi there, my car doesnt have a rear ARB, it was removed by a previous owner.. so i dont know how its affecting the handling? Its a 500 so i dont push hard out of corners that often anyway as the rear end breaks away.. i only use the car in the dry. Would i benefit much by getting a rear ARB fitted?
I broke an ARB mount during a track day once and it made a huge difference to the handling. Without it I was unable to get the power down exiting corners the way i was before it broke and was constantly lighting up the rear and power drifting out of corners (I thought I broken the LSD until i had a look underneath)...It was great fun but killed my tyres 
737flf said:
Got a pair from @adrian two months ago and welded them in myself. Well made, easy to fit and much stronger than the originals. £48.26 inc. del.
I need to fit new brackets on my car. Who is this "@adrian"? Someone from PH? I couldn't find this pseudo in the directory.Thanks for pointing me to the right direction.
Philippe
>Edited to correct feet into fit.
Edited by e635815 on Wednesday 3rd August 16:27
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