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  1. #1661
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    is Shem doing titanium studs?
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    Facebook^^^^^^^^^^^^^^^^ Old T-5 Kompressor Thread^^^^^^^^^^^^^^^ New TT-10 Kompressor Thread

  2. #1662
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    Quote Originally Posted by JT View Post
    but the nuts dont come off, just loosen enough for the wheel to move back and forth under braking/acceleration which then snaps the studs off.
    Now that interesting.

    I would have thought as you brake the brakes/wheels get hot, as the wheel gets hot it expaneds, so if the wheel nuts are tight and the wheel expanding I'd would have thougth that it would have made the wheel nuts grip the wheel tighter.

    Or I'm I talking ££££££££

    1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,

  3. #1663
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    Quote Originally Posted by oblark View Post
    Now that interesting.

    I would have thought as you brake the brakes/wheels get hot, as the wheel gets hot it expaneds, so if the wheel nuts are tight and the wheel expanding I'd would have thougth that it would have made the wheel nuts grip the wheel tighter.

    Or I'm I talking ££££££££
    I agree with you, makes no sense..............?

    also looking at using something like this in future???

    http://www.demon-tweeks.co.uk/perfor...m12x1-5-thread

  4. #1664
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    Quote Originally Posted by oblark View Post
    Now that interesting.

    I would have thought as you brake the brakes/wheels get hot, as the wheel gets hot it expaneds, so if the wheel nuts are tight and the wheel expanding I'd would have thougth that it would have made the wheel nuts grip the wheel tighter.

    Or I'm I talking ££££££££
    the studs can expand too. Titanium expands a bit less than steel although not by much. Stronger though so might not snap when loose..!

    bit of info here http://www.crashforensics.com/wheelandhubfailures.cfm

    It mentions under tightening & surface condition on the wheels (paint) can be a cause of studs/bolts failing. Also says overtighening can over stress the bolts, so when you come to a hard corner/heavy the bolts pass their limit

    If you haven't changed the torque you tighten them up by, it seems to say the Volans are causing it??

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  6. #1665
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    Quote Originally Posted by JT View Post
    ok so whats the verdict??

    All I have changed is the wheels, Titans off,Volans on.
    so why all of a sudden am I losing wheels???
    Its been suggested the nuts dont fit the wheels correctly and are coming loose, but they worked fine on the Titans???
    maybe that the Volans are 7 spoke, instead of 5, so less cooling??
    Im getting mixed views about the causes, but it has to be fixed permanently, so I am safe,the marshalls are safe and my wallet can stay closed for a while.

    As I am now running out of wheels and tyres, I will be needing replacements,so will be looking at getting some 18s. can anyone see any problems with those, before I have any more accidents????

    thanks in advance for any sensible comments
    Well it's pretty effing obvious....

    Did the Titans fall off???.......No
    Did the Volans fall off???......Yes

    Erm your choice with what you put on next


    T35, 556Nm/410lbft & 361BHP/317WHP

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    Quote Originally Posted by jamesy12345 View Post
    the studs can expand too. Titanium expands a bit less than steel although not by much. Stronger though so might not snap when loose..!

    bit of info here http://www.crashforensics.com/wheelandhubfailures.cfm

    It mentions under tightening & surface condition on the wheels (paint) can be a cause of studs/bolts failing. Also says overtighening can over stress the bolts, so when you come to a hard corner/heavy the bolts pass their limit

    If you haven't changed the torque you tighten them up by, it seems to say the Volans are causing it??
    nice work

    We did increase the torque setting from 110 to 130 as a precaution, obviously did work.
    But can agree on the thickness of paint. There seemed to be lots of it flaking off from the wheels that departed the car.

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    Quote Originally Posted by Jamest5r View Post
    Well it's pretty effing obvious....

    Did the Titans fall off???.......No
    Did the Volans fall off???......Yes

    Erm your choice with what you put on next
    I thought you were quiet!! lol

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  12. #1668
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    Quote Originally Posted by JT View Post
    nice work

    We did increase the torque setting from 110 to 130 as a precaution, obviously did work.
    But can agree on the thickness of paint. There seemed to be lots of it flaking off from the wheels that departed the car.
    130 Nm or ft lb? the link below says 80 ft lb. That is just something pulled off the net for road cars though

    http://www.discounttire.com/infoCent...que.html#volvo

    At work we torque to about 70% of the yielding stress of the bolts (flanged joints for example). If there are any leaks the lads like to tighten more to stop the gas/steam/oil whatever pissing out, hard to convince them otherwise. If the gasket/sealing surfaces are wrong then even huge torque values won't help and can damage the bolts even

    Not saying your torque values are wrong by any means just thinking out loud

    //edit

    don't want to bore the ££££ out of everyone about bolts but here is a torque table showing 105 ft lb is 70% of yield for 1/2" or 12 mm bolts (dry, without lube )

    https://www.fastenal.com/content/fed...20for%20B7.pdf

    So 130 ft lb is about 90% of yield.....& 140+ ft lb would be around the point where the bolt starts to yield (not snap, just that is the point where damage should start)

    This is industrial stuff nowt to do with cars really but there it is anyway.
    Last edited by jamesy12345; Tuesday 18th August 2015 at 20:36.

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  14. #1669
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    Could have a point there, Jamesy.

    If the bolt or stud is already near yield at rest, then surely as soon as you show it a fast corner the pressures on that bolt will multiply exponentially, causing them to stretch or snap.

    If they are stretching, then the wheel will rattle loose, like in this case.

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    Quote Originally Posted by Doingitsideways View Post
    Could have a point there, Jamesy.

    If the bolt or stud is already near yield at rest, then surely as soon as you show it a fast corner the pressures on that bolt will multiply exponentially, causing them to stretch or snap.

    If they are stretching, then the wheel will rattle loose, like in this case.
    Yes mate I guess that is where I was going with that one.....nipped up nice & tight, embarrass a few BMWs then 'ping' x5. Could be wrong like just thinking out loud. The effect is worse with lube also (e.g. copper slip) but don't want to start that argument again....tightening torque should/can be reduced IF lube is used.

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    Quote Originally Posted by jamesy12345 View Post
    Yes mate I guess that is where I was going with that one.....nipped up nice & tight, embarrass a few BMWs then 'ping' x5. Could be wrong like just thinking out loud. The effect is worse with lube also (e.g. copper slip) but don't want to start that argument again....tightening torque should/can be reduced IF lube is used.
    Where did I leave that tin opener...?

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    Quote Originally Posted by Doingitsideways View Post
    Where did I leave that tin opener...?
    Where is JamesT5 when you need him for an opinion on copper slip

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    well, 8000 views since the last post.........someone is reading it?? own up?? lol

    So after brands, I dumped it in the garage and walked off. so from this :



    to this:




    I finally got back to the garage over the weekend to remind myself how much work I have ahead.
    2 Wings for a start:


    then all sorts of stuff underneath, brake calipers, brake discs, droplinks, wishbones, alloys, tyres, hub, etc etc
    and just to rub it in, the tyres and brakes only had 4 laps on them



    Going to try and empty out all the gravel from the engine bay and see if the engine is ok, then strip it down and start again..........

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  24. #1675
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    ouch hope you can recover as much as possible

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  26. #1676
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    Quote Originally Posted by JT View Post
    well, 8000 views since the last post.........someone is reading it?? own up?? lol
    Nope, not me

    Oh hang on

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  28. #1677
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    It's not much but I have a volan alloy wheel of you need....... Well it's somewhere at work!

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  30. #1678
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    Quote Originally Posted by Nealevo View Post
    It's not much but I have a volan alloy wheel of you need....... Well it's somewhere at work!

    Thanks for the offer, but I've not had much luck on volans! lol

    quite fancy the Team dynamic Imolas
    Last edited by JT; Monday 15th February 2016 at 22:55.

  31. #1679
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    I have some 18" jag wheels, o wait a min you already stole those

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  33. #1680
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    Quote Originally Posted by Nealevo View Post
    It's not much but I have a volan alloy wheel of you need....... Well it's somewhere at work!
    Well I'll have your spare 2 Volans then!!!


 

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