New and Improved Headrest Clamp

Discussion in 'Innovators Workshop' started by RojoRacing, Mar 23, 2016.

  1. tiltmaniac

    tiltmaniac Guru

    Precisely.
    They actually have pictures of the clamp on the site-- looks just like that (CB pic below), though I'm happy to post pics too.

    [​IMG]

    Guide to the pic:
    The set screw for the rod is on the same axis as the bolt (which, in this picture, would be on the other side).
    The rod comes in perpendicular to both, and the rod's axis intersects with the bolt/set-screw axis.

    I'll modify mine by drilling out the set screw, and drilling a new hole for the rod off to one side, installing the rod off to the side where it will not attempt to intersect with the bolt.
    For reference, here is the original (imho better) design from the first page of the thread:

    [​IMG]
     
  2. RojoRacing

    RojoRacing Donut Powered Wise-guy

    well that's the difference between a hand made $40 part that was out of stock 90% of the time and a mass produced $20 part that's readily available. I will say I appreciate the fact you guys notice the extra attention to detail I put into my designs.
     
  3. tiltmaniac

    tiltmaniac Guru

    I think they could match your design more closely without spending more money (i.e. by moving the rod to the side instead of at centerline), but that is 100% Cruzbike's decision-- the current design is prettier, and suits the needs of people not mounting other seats to the frame.
     
  4. super slim

    super slim Zen MBB Master

    I have installed the two new headrest clamps without the solid rod, as it was too heavy, and the length of the clamp was enough to stop it turning.
    I required to install foam behind the clamps, to push them up against the headrest tubes, so I could use the existing bolts.

    With the new solid clamps installed, the headrest and rear rack, no longer rocks side to side!

    A GREAT improvement!!!

    Thanks Jason!!!
     
  5. RojoRacing

    RojoRacing Donut Powered Wise-guy

    Was the rod solid or hollow? The original rojo clamps where super thin alloy tubing, think plastic straw but aluminum.
     
  6. super slim

    super slim Zen MBB Master

    solid 5 mm dia weighing 15 grams!
     
  7. RojoRacing

    RojoRacing Donut Powered Wise-guy

  8. tiltmaniac

    tiltmaniac Guru

    So, I drilled a hole in both off-center using a hand-drill, used the same drill to drill out the threads for the set screws, then hammered the rod (with a hammer) through the holes I made (which were intentionally a hair too small).

    The rod is *very* snugly fit. It isn't going anywhere. The screws can go all the way through, since the rod is off-center.
    It is now installed in my S30, with the second (lower) clamp used to mount the seat as well as the headrest-tube.
    It does so without any problem (little futzing about to find the appropriate screw-hole).

    Result?
    Happy customer. Yeay! :)
     
    super slim likes this.
  9. RojoRacing

    RojoRacing Donut Powered Wise-guy

    I just LOL at my previous picture post when an email notification for this thread popped up :rolleyes:
     
    tiltmaniac likes this.
  10. Jeremy S

    Jeremy S Dude

    @RojoRacing it looks like all your photos here are being held hostage by PhotoBucket. I just received my Perez Clamps in the mail (hoping they'll solve my persistent creaky headrest problem). I may be able to fiddle around and figure it out, but just looking at them I have no clear idea how to install them.
     
  11. RojoRacing

    RojoRacing Donut Powered Wise-guy

    :lol and just like that we have lost all my photo content forever because I'm not paying to use photo bucket. Thanks for the heads up so I don't waste any more time with them.
     
  12. RojoRacing

    RojoRacing Donut Powered Wise-guy

  13. Jeremy S

    Jeremy S Dude

  14. RojoRacing

    RojoRacing Donut Powered Wise-guy

    Yeah that one shows fine on my computer but all the others are dead like you show so it's not just be being logged into my PB account.
     
  15. Jeremy S

    Jeremy S Dude

    The non-obvious part to me, at first, was that the clamp bolt first goes through a hole in the frame tube, then into the clamp. Tightening the bolt pulls the clamp up toward the top of the frame tube. Seems obvious now. My frame (first run Silvio 2.0) is so old that it only has one suitable hole, and that wasn't being used for anything so I'm not sure why it's there. I'm going to see how things work with just one clamp before I drill a second hole in the frame.

    IMG_4046 copy.jpg
     
  16. ratz

    ratz Wielder of the Rubber Mallet

    Put the second hole in; with just the one it will "Creek" under load which can be a bit maddening until you find it. I had to drill the second hole on one of our Silvio's and it was fine.
     
  17. RojoRacing

    RojoRacing Donut Powered Wise-guy

    Hows that saying go? "do it right the first time"
     
    super slim likes this.
  18. Jeremy S

    Jeremy S Dude

    OK, I have given in to peer pressure, drilled a second hole, and installed both clamps. My hand drill required a delicate touch to get all the way through.
     
    super slim, Mathew Fy and ratz like this.

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