Spar 700
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  1. #1

    Default Chain hitting HBS motor mount

    Hey Guys,

    Last year i had an issue with my chain cutting into my HBS 636 motor mount. Can anyone tell me whats the cause? Is it from too much side-play in the chain? Should my engine sprocket be spaced out more? Has anyone had the problem?

    Thankyou For Your Help!

  2. #2
    Senior Member
    Join Date
    Jun 2008
    Location
    East Manchester Pa 17345 USA
    Posts
    1,401

    Default

    do you have the gear spacer behind frt gear??

  3. #3

    Default

    If you mean, spacing washers. Yes, i have been using three spacing washers

  4. #4

    Default

    Did you put the spacers in right place when putting motor mounts on ? make sure your chain is running straight, if not respace your rear sprocket. use a straight edge or string to align sprockets .Car should be on ground when doing this.also you may not need 3 spacers on front,as some gears require less depending on how they were machined. I've used both types on a 636.

  5. #5

    Default

    Motor has not been taken out since I bought the car last year and the previous owner didn't have this issue. I use a straight edge to align the chain each week so I don't think that's the issue either.

  6. #6

    Default

    Panhard or W-Link? could chassis be shifting under load?

  7. #7

  8. #8

    Default

    You might want to check for a cracked weld on panhard mount. Also check for bent heim on rod.Do you run a chain tensioner?

  9. #9
    Senior Member
    Join Date
    Sep 2010
    Location
    Phillipsburg, NJ
    Posts
    109

    Default

    I haven't seen many that don't dig in. How bad is it?

  10. #10

    Default

    Hyper upright for panhard slider could be bent as well, the panhard may be bent, The spacing when you (if you) changed gears may not have been the same on the gear hub, or perhaps a spacer was taken off and not replaced before the gear. Also the higher you run the panhard bar the shorter it becomes, moving the rear gear closer to the chassis and the chain closer to the mount. I have found the guide block at rear to be very helpful in keeping the side to side movement of the chain portion under control as well.

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