Hi all...just joined.<br />
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My trike has spyke inverted forks, 63.5mm and 45mm, rake 34 degrees from perpendicular, length from the top of the upper tree to the axle is 32" bearing weight. I've got a steering wobble from about 25 to 40 mph, mainly on deceleration, and steering is very hard. Front end also dives on front braking. I had the bearings replaced and they were worn badly. I also had oil replaced with heavier oil. Put 41psi in front tire and 25 in rears. Steering wobble improved slightly, but front end still dives(maybe 2") and steering is still very hard. No steering wobble from about 50 to 85(fastest I've gone).<br />
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I want to change out the forks. I want to go with a 5 or 6 degree additional rake and maybe 2 to 4" longer. I have not measured the fork length with the front end off the ground, but will as soon as I can get the front off the ground to take a measurement.
How much should the forks collapse when the bike is lowered, if any?<br />
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My mechanic said I should go with Milwaukee Twins(inverted 58 and 41) from JP Cycles with 6 degree rake and 2-4" longer(after a little trig) than current with bike on the ground. They are made in the USA and have a good reputation. I also bought a shindy pro Steering stabilizer to be custom fit once the forks are installed.<br />
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Anyone have any experience with these forks or do you have another suggestion. Cost, of course is a concern, but safety and reliability is also very important. Your infinite wisdom is requested?<br />
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Thanks in advance<br />
Tom