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New (to me!) '77 CB400F - US model
Nurse Julie:
--- Quote from: mattsz on October 25, 2018, 11:31:58 AM ---
--- Quote from: Nurse Julie on October 25, 2018, 09:35:59 AM ---
--- Quote from: hairygit on October 25, 2018, 09:16:44 AM ---We had this discussion a while ago nursey, for some reason many of the U.S. F2's still had footrests on the swingarm.
--- End quote ---
I missed that discussion Mr Hairy 😀😀😀 Good to know though.
--- End quote ---
Actually, Nurse Julie, you did put in a brief appearance during one of the footrest discussions - but it was almost four years ago, and since I myself have trouble remembering if I put on my underwear this morning, I won't hold it against you if you don't recall the discussion.
I am curious to know, however, why the swingarm footrest setup was "fixed" in your market, but continued in ours...
--- End quote ---
Blimey, 4 years ago was a past life for me 😀😀😀
Nurse Julie:
--- Quote from: mattsz on October 25, 2018, 02:47:01 PM ---So what IS the story with this front brake? Is it a sliding caliper type that only slides when you slide it yourself? I've never seen an adjustment system like this...
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If you are on about the arm, It's a floating calliper set up. Needs to be set correctly to function correctly.
mattsz:
--- Quote from: Nurse Julie on October 25, 2018, 02:52:38 PM ---Blimey, 4 years ago was a past life for me 😀😀😀
--- End quote ---
I know, right? Let's see...... yep, I do have my pants on...
mattsz:
--- Quote from: Nurse Julie on October 25, 2018, 02:55:12 PM ---
--- Quote from: mattsz on October 25, 2018, 02:47:01 PM ---So what IS the story with this front brake? Is it a sliding caliper type that only slides when you slide it yourself? I've never seen an adjustment system like this...
--- End quote ---
If you are on about the arm, It's a floating calliper set up. Needs to be set correctly to function correctly.
--- End quote ---
I'm sure that's true, but I'm trying to understand how it works and why it's designed the way it is. IIRC, my Kawasaki's Tokico caliper doesn't have any adjustment screws, it simply slides on pins as needed to equalize the piston forces...
I opened up the master cylinder reservoir, found the fluid low and very dark-looking (no surprise), replaced the cap and gave the lever another squeeze - front wheel is now solidly locked again. Might I free it up by loosening the adjustment screw and manipulating the caliper or pads somehow? I just want to be able to move it around the garage...
taysidedragon:
They were made in the early days of disc brakes. The designs got better!
The adjuster moves the whole caliper to line it up with the disc. Loosening it won't really help if it's in the right position already.
It sounds like the piston is sticking. Spray some brake cleaner in there and you might be able to free it up just enough to move the bike about. If you're careful, you could use a flat lever to push the piston in a little to free the disc. Even if you free it now it will stick again any time you squeeze that lever.
You will have to check and rebuild the brake caliper anyway at some time. The piston may have corrosion on it and the seal will almost certainly need replacement.
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