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Thread: Strange shimmy on Monarch II trike

  1. #11
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    Front tire cupping will create shakes , due to improper pressures. The previous owner might not of had it right.
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    700+ Posts CrystalPistol's Avatar
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    Don't know where you are with this now, but often a change from two wheels to three wheels leads to similar complaints. A bike traverses road elevation changes as it stays vertical. It does not heel over when a wheel is not 100% perpendicular to surface, it stays in a attitude dictated by gravity's pull and balance and whether turning or not. A trike is totally different, if the right rear drops into a dip, the trike will try to turn right. Trail that is good for a bike makes a trike steer heavy and the front end more like a big caster that follows (like shopping cart) so the trike wants to steer right in this case, the bike doesn't even see the dip as a direction influence.
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    I am well aware of how a trike handles versus a bike. Thanks for your input. I have travelled about 600,000 on Motor Trike before I got this one. Both Motor Trikes were the Adventure models which have independant suspension. This new (to me) trike has a solid axle. They respond very differently from an IRS trike. My problem turned out to be way too much air in the rear tires. The Lehman factory advised 26 # in the rear. That is way too much in my opinion. Those rear tires are rated to hold up over 3000 pounds of car. On a trike they hold up about 350# each. I reduced the air pressure to 20 #. They are after all radial tires. This cured the problem completely. It steers and rides now like a trike should.

  4. #14
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    OooohKay
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