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Torque Wrench Range

Discussion in 'V7/V85/V9 Chat & Tech' started by Mayakovski, Apr 15, 2018.

  1. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Site Contributor!

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    Hey All;

    I will be picking up my Anniversario in a week or two (3 at the most) and am getting a few tools together to ensure I can take good care of her. I plan to get a torque wrench but am wondering what torque range will be suit her.

    Below are the range options. Which is best for the Anniversario?

    10-80 ft.-lb
    10-150 in.-lb
    20-200 in.-lb
    25-250 ft.-lb
    50-300 ft.-lb

    Thanks
    Maya
     
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  2. Godfrey

    Godfrey High Miler GT Famiglia

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    Best thing to do is to scan through the V7 service manual and look at the range of torques required. It's so much easier to think in Newton-meters than lbs-inch and lbs-ft ...

    Most of what you see fit in the ranges between 3-25 Nm and then 25-60 Nm, with a few items (like axle nuts) going up as high as 80-90 Nm. Torque wrenches, like most measuring instruments, tend to be the most accurate in the middle 90% of their stated range, so buy accordingly. 1/4" drive for the low range and 3/8" drive for the high range. Be sure to get good quality allen and Torx drivers too, that fit in the space you need to work in.

    And for torque wrenches in particular, and particularly in the LOW range, be willing to pay a good bit for good quality. No tool can cause more damage than an inaccurate torque wrench! Both Snap-On and MAC sell excellent torque wrenches; there are others as well.

    My low and middle range torque wrenches are lovely, accurate and reliable pieces from Park Tools (3 to 15 Nm, 10 to 60 Nm), who service primarily the bicycle tools industry. The high range is a little short for the highest torques needed on the Guzzi, but I haven't run into needing any of the high torque points as yet. I'll buy a Snap-On in that range when the time comes.
     
  3. V700Steve

    V700Steve Cruisin' Guzzisti GT Contributor

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    I have a Snap on, covers 0-75ftlbs then you are good for all the 6mm threads that are 7ftlbs not much on bike bigger unless you are inside. I hardly use my big one for service work. Many have a cross reference right on the handle or digital readout that switch over from nm to ftlbs it is good to have a chart for kgm's also, if you are working on models that used that info.
     
  4. jwegman

    jwegman Just got it firing!

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    Good day Maya,

    All the torque values are called out in the v7 III ABS workshop manual (presuming you're getting a v7 III). If you haven't obtained one yet, it's a good resource. Note that all torque values are noted in Nm (with lb ft conversions).

    You'll want at least two different sized torque wrenches, and I'd advise that you select the wrench that's nearest its mid to upper range of its rated scale for a given bolt size/torque value... Meaning, try avoiding using a larger wrench on a smaller bolt where the torque value for that bolt is at the bottom ~20% of that wrench's range.

    So, continuing with the two wrench recommendation; you might consider the first wrench with a 1/4" drive in the ~30-200 inch-lb range, the other with a 3/8" drive in the ~20-100 ft-lb range.

    Here's what I've been using the past few years:
    #1; 1/4" drive 30-200 inch-lb micrometer clicker (for comparison; that's in the 2.5 ft-lb - 16.67 ft-lb range)
    #2; 3/8" drive 20-100 ft-lb split beam or micrometer clicker

    Specifically, my tool box has Precision Instruments wrenches (with an 3/8" Snap-on 5-75 lf-lb micrometer):
    1/4" micrometer click: http://www.torqwrench.com/tools/item.php?StockCode=M1F200HXB
    3/8" split beam: http://www.torqwrench.com/tools/item.php?StockCode=C2R100F

    Regards,
    Jake
     
  5. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Site Contributor!

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    How do you find such a tool?
    The only 0 to 80 lbs ones I can find at beam type, and I have used them before and not been happy with them.
     
  6. V700Steve

    V700Steve Cruisin' Guzzisti GT Contributor

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    Well, mine clicks, been buying off Snap On tool trucks now over 30yrs since I started working on Guzzi/BMW/Ducati/HD professionally in shops. Just retired a year ago cause I don't want to be a dash mechanic or deal w/all the lectrics. My newest is a 98EV and I don't do gadgets or lectrical stuff I don't need, read paper maps & put on layers for cold weather. Got to be age I agreed to w/govmt and quit. Never made any $ but had a blast. I give back on forums cause the old guys now gone showed me.
     
    Last edited: Apr 16, 2018
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  7. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    My torque wrenches are not Snap-on (wish they are sometimes), but they are Tekton. One of those bang for the buck, "not super high end but great result" type of torque wrench.

    You can get them on Amazon.ca and not super expensive either.
     
  8. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Site Contributor!

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    Actually that is what I had originally decided on but none of them are rated below 10lbs. Would that mean I could not use it on a fastener that called for 7lbs for torque?
     
  9. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    most of the 1/4" drive torque wrenches are rated in in-lb

    Like the Pro-tip interchangeable one I have is rated from 40~200 in-lb. It is equate to 3.33 ft-lb to 16.67 ft-lb

    or the Tekton 1/4" drive is from 10 in-lb to 150 in-lb (0.83 ft-lb to 12.5 ft-lb)

    1 ft-lb = 12 in-lb

    But overall, for these 10 lb and below torque, most of them are just "snug tight" and good enough.
     
  10. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Site Contributor!

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    OK, I got it now.

    Thanks everyone, really appreciate the explanations.

    Maya
     
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  11. Godfrey

    Godfrey High Miler GT Famiglia

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    The lbs-inch vs lbs-foot business is why it is so much easier to just go with Newton-meters (Nm). Besides, all the Guzzi torque numbers for the V7III are listed in Nm and translated to SAE values now ... Using Nm values has to be more accurate, as well as easier.

    If you're buying tools for that, might as well get the Nm calibrated torque wrenches. Most have equivalence charts printed right on the tool.

    G
     
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  12. Mayakovski

    Mayakovski Cruisin' Guzzisti GT Site Contributor!

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    OK, maybe I do not have it.
    Example in the shop manual it specs 10Nm (7.38 lb ft) for the screws fastening the mudguard to the stabilizer.
    But the closest I can find in this Torque Wrench which only goes down to 13.6 Mn (10 ft bs). So is that close enough, or are there really click Torque Wrenches out there tat go this low?
     
  13. jwegman

    jwegman Just got it firing!

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  14. TimmyTheHog

    TimmyTheHog Cruisin' Guzzisti GT Contributor

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    If you wish to stick to Tekton, here you go buddy

    https://www.amazon.ca/TEKTON-24320-...5620&sr=8-1&keywords=tekton+torque+wrench+1/4 <--Sorry Todd!

    If not, you can look for similar range with other brand but I do not have experience with other brands.
     
  15. Godfrey

    Godfrey High Miler GT Famiglia

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    Personally, I wouldn't trust a Tekton torque wrench for accuracy just the way I wouldn't trust a Craftsman torque wrench. I've had bad experiences with cheap torque wrenches like that.

    My Park Tools low range torque wrench is a 2 to 14 Nm (17.7 to 123.0 lbs-inch) click style tool which takes quarter inch drive sockets and drivers:
    https://www.parktool.com/product/ratcheting-click-type-torque-wrench-tw-5-2?category=Torque Tools
    US $111

    The Park Tools middle range torque wrench handles 10 to 60 Nm (7.38 to 44.25 lbs-ft) and is three-eighths inch drive:
    https://www.parktool.com/product/ratcheting-click-type-torque-wrench-tw-6-2?category=Torque Tools
    US $127

    A high range torque wrench (that I haven't needed yet) should be around 50-200 Nm. MAC, Snap-On, etc all make good ones in this range. Park Tools does not; they produce tools specific to bicycle mechanicals where wrenches in this range are usually suitable for motorcycle and automobile applications.

    My advice would be to buy what you need as you find you need it rather than try to buy everything to cover all bases up front.
     
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  16. Wisconsin v7 Racer

    Wisconsin v7 Racer Cruisin' Guzzisti

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    Some stuff you just use feel in your hand tightness and common sense tightness. Don't over think it
     
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