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Front Brake Mods for '83 750 seca

Discussion in 'XJ Technical Chat' started by xtown_bikeboy, Jun 10, 2008.

  1. xtown_bikeboy

    xtown_bikeboy New Member

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    Could't figure out how to see if this has been posted before or find the thread.
    Anyone had any notion to convert the cable/hydraulic front brake system to a straight hydraulic operation with a reservoir on the handpiece? Is this a good or bad idea? The location of the brake fluid reservoir makes it a pain to fill/bleed the system. Any thoughts?
     
  2. Robert

    Robert Active Member

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    There have been a few folks that have converted their rides (you see them in photos every now and again). What I have seen shows that the handlebars have been either stripped (pads removed) or replaced. No reason that it shouldn't be done, just try to get a cylinder that mounts in an upright position. I'm sure that there will be a few folks that will tell you of the types of cylinders they are using, stay tuned.
     
  3. xtown_bikeboy

    xtown_bikeboy New Member

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    Thanks Robert,

    In your esteemed opinion is there any merit in the conversion or is it a complete waste of time? I like idea of a single, simple system and the easy access for checking/filling/bleeding the system as well as less maintenance on cables. I don't know if the relative piston size of the actuator in the brake lever and the piston in the caliper is an issue or if they are fairly standard across the industry. Lots of questions because 'a bike that won't go is a problem, a bike that won't stop........yikes!"
     
  4. Robert

    Robert Active Member

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    I can attest that the cable/mastercylinder design on Seca's leaves a heap to be desired. Access (or lack of it) is the single biggest reason the front brakes on these bikes gets overlooked, who wants the pain and trouble? Unfortunately, being the anal purist I am, I have not strayed from the stock configuration as of yet. I simply puttered around the problem a few times and found that a syringe with about 6cm of 6mm vinyl tubing attached works well to get the brake fluid where it needs to go. And given my recent investment in new lines, I don't think I will wander down the conversion path for years to come. So I don't have any suggestions as to what would work or fit.
    If you can swap, and I think you can, you should. Simplicity is better. Fewer moving parts tends to be more reliable. So I would vote for converting.
     
  5. xtown_bikeboy

    xtown_bikeboy New Member

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    Thanks for comments Robert. Makes me feel like I'm not way out of line considering this modification.
    I'll look for advice from others in the group for recommendations. I'm not smart or brave enough to venture out on my own with this one and will look to those who may have had success for advice on components. I peeked under the handlebar covers and the stock bars will need replacement if exposed. They are not pretty. I have been considering going to improved (steel braided?) hydraulic lines to attempt improvement in front braking power, so now might be the time to make the switch.
     

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