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Thread: Straight rate fork springs

  1. #16
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    Default Re: Straight rate fork springs

    How do you know what length the PVC spacers should be? Never mind. I asked before I read about correct preload at Sonic Springs.
    Last edited by grubsie; 01-12-2018 at 09:34 PM.

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    Default Re: Straight rate fork springs

    Hey! Self Serve Technical Thread!! Cool!!!

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    Default Re: Straight rate fork springs

    Got my Sonic 1.2 Springs last week. Had my buddy make up 2 1" aluminum spacers that I used on the lower side of the damper tube to lower the front end 1" and still be able to keep the top of the fork tubes flush with the top of the triple tree. My buddy is getting expensive on the work he does for me. (Just kidding) This time it cost me a 12 pack that I had to sit and split with him. Oh, the price we have to pay sometimes. Also, I modified the upper fork tins by drilling 2 5/8" holes in the exact location of the clamping bolts on the lower triple tree. This will allow me to do any fork work in the future if I need to without having to tear off the fairing again. My buddy is fabricating some stainless plates that will hide the holes.

    Anyway got everything back together and finally had a chance today to take a test ride now that I got my modified Monster Oval mufflers back on the bike. I have to say, wow!, what a difference in the handling and feel of the front end. Between lowering the front and rear of the bike 1" in combination with the sonic springs, it's like a whole new machine. It now feels lighter than my '02 Ultra Classic and seems to handle better also. The ride was great but short. It's damn cold out there today.

    My plan for the spring was to keep the RSV or the Ultra. Mostly along the lines of which one sells first. Now, I can't see me parting with the RSV. Now I guess I have to get to work on a vmax final drive and a 130 tire up front. Almost not feeling bad about letting go of the Ultra. After all, it only has a CD player, but the RSV has a cassette player and you can't beat that.

    Here's a pic of one of the upper tins with the holes drilled in it.
    Attached Thumbnails Attached Thumbnails tins holes.jpg  

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  5. #19
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    Default Re: Straight rate fork springs

    It says in the directions that come from sonic.
    At least as a starting point. You could add longer ones later if you need more preload.
    Brian

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