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  1. #1
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    VT shock mount question...

    It seems the bolt for the upper shock mount on my VT is a bit smaller than the hole it goes through on the frame -- consequently, there is a slight amount of vertical wiggle at the shock mount when the bolt is loose.

    When the nut is tightened, everything snugs up and is quiet but its a bit disconcerting.

    Is this normal? There isnt so much play that its clearly a problem, but obviously I would prefer a snugger fit.

  2. #2
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    I too noticed this a while ago on my VT. The play was clearest when lifting from the saddle but keeping the tires on ground. I tightened the bolt and became happy again. (didn't even come across the idea of getting a larger bolt.. I can tighten it every now and then. Though I'd be curious to know if someone has fixed the problem.)

  3. #3
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    Yeah, thats exactly it -- if the nut wasnt tight enough, I'd hear a fairly loud knock or creak -- usually just by lifting the saddle.

    Oh well -- I dabbed on some green locktite and snugged it up -- cant hurt things

  4. #4
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    I have a 2004 VT1 just over 18mths old that I use cross country and for road training and I had the clicking very early on. You can tighten the shock bolts but that is only temporary as it is ultimately the fact that the bolts are incorrect... Giant have used bolts with too much thread when the shoulder should be the full width with thread only on the very end - standard good engineering practice. I was able to quieten it temporarily with teflon tape on the thread to build it up but that would only really last one or two rides at the most as the thread just cuts it up and compresses it into the bottom of the threads.

    About 2mths ago it got too much so I measured the frame to see what should be fitted. The top bolt should be an M6 with total shaft length of 40mm and shoulder length of 32mm allowing for the washers but 30mm is fine. The bottom is M8, with total shaft of 65mm and shoulder of 52mm, but I would advise 50mm as you need to make sure that the run-in of the thread is complete before you get to the threaded portion of the frame.

    I wasn't able to get either stainless or plated in these dimensions so settled for black high tensile as a test run. Well it is perfect. There is near zero tolerance and by putting one layer of the thinest teflon tape wrapped very tightly it is a nice tight fit without any stiction of the bushs. 2mths of riding both days every w/e at a min of 40-50km each ride and there is still absolutely no noise or slop. I am now searching for either stainless or plated in the right sizes to avoid the dreaded rust, in the meantime I have used gun blue to protect them but it is not really meant for that purpose and won't really last.

    Bottom line, if Giant had built it right from the beginning we wouldn't have this issue but it seems that other brands aren't any better. I checked a friends Specialized Epic Pro and Cannondale Scaple and both had exactly the same problem but their suspension design masked the slop - he is now looking to do the same fix.

  5. #5
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    Very informative, thanks. Makes sense. I'll take a look at my bolts...

    Did you get yours at a hardware store?

  6. #6
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    Being Oz based (Sydney) I went to a specialist Engineering Fastening store called Lee Bros. I particularly wanted to retain the hex cup head, etc and here in Oz you cannot get those at your standard H'ware store.

    I know the US would be much better serviced, my trips over there have been shoppers heaven virtually anything I was looking for.

    I am sure I saw on some US site they were selling replacement stainless bushings and bolts but never really looked to see if they fixed this issue. You might like to try a search for shock bushes then enquire locally.

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