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Thread: Lehman trike rides very low in rear

  1. #31
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    Cracks in the swingarm are usually caused by the overloading of the suspension, whether it is the shock pre-load, combined rider and passenger weight or pulling an overloaded trailer or too much tongue weight.

    Basically, it has reached it's limits of abuse !!

    The cracks should be addressed first and repaired depending on the location and then re-enforced.

    Look at another thing that affects the ride height, rear swingarm isolator bushings.

    These bushings are used to attach the swingarm to the rear axle and they are made of polyurethane.

    Polyurethane has a definite shelf life and I suspect that the original bunch of bushings were all made at the same time, about 14 years ago.

    When they fail, the rear end will drop down an inch or so and the driveshaft will start rubbing inside the swingarm (making noise).

    Check all of those items before you get the Progressive 1100-1200 Spring.

    Measure your OEM spring first (with a micrometer) to see if it had not already been replaced.

    Stock OEM spring is .500" and the 1000 - 1200 is .535"

    I also have a Heavy-Duty auxiliary shock and spring to replace the standard lateral auxiliary shock.

    Hope this helps.
    Jim Murphy
    Lehman Tech since 1998
    Champion Tech since 2005
    Lehman & Champion Dealer Owner Operator
    Iron Butt Rider 2001

    WHEN HELP IS OFFERED, A SIMPLE "THANK YOU" IS APPRECIATED.

  2. #32
    20+ Posts TTNW's Avatar
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    Quote Originally Posted by 2Trikez View Post
    Chuck, I have a friend with this same issue on MonarchII (sagging body)on his 2006 GL1800 and he asked for my help to get it fixed. Your install of the "overload spring" more than likely is what my friend needs as well. I was hoping this might be the best item to look at 1st and go from there. And now I know that we were in the ball park. I also found some swing arm welds "cracked" from stress as well. So at this point we are taking it apart to confirm everything at this point. I also would like to ask: Is the stock shock re-build-able? Kinda reminds me of the "Pro-Link" style (shock) set-up on my 2 1985 V-4 Sabre's, but they also had air in them. I also was looking at Progressive Suspension for a "spring" with the right "rate". Seems they have them for 1100#/1200#. These will probably be just right for my friend & wife. They are "big" people. He's has this set-up since 2006 so I figger that shock spring was already "sagging" years ago. Just took a good PA pothole to help make it fail & tire rub (thru the body) on the one side. Hope to hear back quickly just to know we are in the ball park. And yes, I've (we) have built a few trikes (from scratch) with solid axles. Was just not sure about GL1800's at this time...as never had experience will those swingarm set-ups.

    2Trikez

    Barry
    2Trikez:

    I'm thinking you're on the right path. I'm almost positive that my OEM Shock spring is the wrong size. I too am looking at a Progressive spring for it. Also, the Aux shock spring is almost a must. But, be advised that it is one strong mother. Finally had to take it to a place here in Spokane that worked on Harleys. One other shop just about broke his system trying to compress the spring to put the retainer on. Beware of that.

    Chuck

  3. #33
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    Quote Originally Posted by TTNW View Post
    2Trikez:

    I'm thinking you're on the right path. I'm almost positive that my OEM Shock spring is the wrong size. I too am looking at a Progressive spring for it. Also, the Aux shock spring is almost a must. But, be advised that it is one strong mother. Finally had to take it to a place here in Spokane that worked on Harleys. One other shop just about broke his system trying to compress the spring to put the retainer on. Beware of that.

    Chuck
    Send me the old shock and spring, and I will install the new spring onto your old shock for only the price of the spring and send it back to yaahs....
    Jim Murphy
    Lehman Tech since 1998
    Champion Tech since 2005
    Lehman & Champion Dealer Owner Operator
    Iron Butt Rider 2001

    WHEN HELP IS OFFERED, A SIMPLE "THANK YOU" IS APPRECIATED.

  4. #34
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    Default Goldwing F6B Lehman conversion help!!!

    I have a 2014 Goldwing F6B with Lehman monarch II LLS independant suspension. when my wife and I ride every small turn or bump the fender rubs the tires. I have called Lehman and all they say is there is nothing that can be done. Does anyone know of a shock that can fit to upgrade? or any other ideas. currently my ride is 4 inches from the ground with us on it. due to this we cannot change tire size or we will hit bottom. current tire 205/70/R15.

    Please help......

  5. #35
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    Quote Originally Posted by Tiny0452 View Post
    I have a 2014 Goldwing F6B with Lehman monarch II LLS independant suspension. when my wife and I ride every small turn or bump the fender rubs the tires. I have called Lehman and all they say is there is nothing that can be done. Does anyone know of a shock that can fit to upgrade? or any other ideas. currently my ride is 4 inches from the ground with us on it. due to this we cannot change tire size or we will hit bottom. current tire 205/70/R15.

    Please help......
    Kristopher, Welcome to Trike-Talk..........I can't help but i'm sure someone will chime in soon with the help you need.....
    Sometimes a Cigar is Just a Cigar.....
    2018...SLINGSHOT...........

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    To the Trike Talk Family! FROM SOUTH
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  7. #37
    Lehman / Champion Guru
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    Kristopher, Welcome to Trike Talk Forum from West Virginia.

    I will respond to your concerns through email.
    Jim Murphy
    Lehman Tech since 1998
    Champion Tech since 2005
    Lehman & Champion Dealer Owner Operator
    Iron Butt Rider 2001

    WHEN HELP IS OFFERED, A SIMPLE "THANK YOU" IS APPRECIATED.

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