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Post by jamesb on Apr 15, 2010 15:22:15 GMT
Parked my wifes bike up about 6wks ago - went out a few days to do a once over for the MOT and the front fluid had drained itself - likely cause appears to be caliper seals - any other suggestions or thoughts - line appears ok
thx
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Post by m40man on Apr 15, 2010 16:53:00 GMT
Easiest option: Refill the reservoir, refit it's lid, & give the brake lever a few squeezes - look for leaks  . |
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Post by CD on Apr 15, 2010 19:24:21 GMT
What type of hoses does it have? The assemble yourself braided hoses can leak if the olive isn't 100% settled.
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Post by jamesb on Apr 15, 2010 20:20:25 GMT
Standard Rubber hoses
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Post by CD on Apr 16, 2010 7:08:59 GMT
I think take off the calipers and see which one is wet with fluid.
If its a 900 you could seriously consider fitting blue spot brakes, master cylinder and braided hoses**. Much of the cost will be offset by the repair costs and renewing the soggy pads.
**They wont fit the 600.
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Post by jamesb on Apr 16, 2010 9:41:39 GMT
Unfortunately its a 1997 600 single disc - anyone know of upgrades for the front caliper
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Post by bobh on Apr 16, 2010 21:42:25 GMT
I think a blue spot caliper (or a front caliper from pretty much any big Yamaha of the last 20 years) will fit the single disc model.
Before anyone asks, they won't fit the later twin disc one, as the mounting hole spacing is wrong. But the brakes on that model are not too bad anyway, especially with braided hoses.
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Post by CD on Apr 21, 2010 0:15:11 GMT
I suspect the back of the blue spot is just a bit wide for the 600. You could risk filing about 3mm off the corner of the caliper but no more and then don't angle the chamfer too shallow - there isn't much spare metal on those things. You could also shim the caliper off the mounts there is "some" space to spare in the pads slot. However you'll need to be sure the outside pistons are not going to push too far out with worn pads.
The other issue is the swept area of the pistons I dont know how they compare to the standard Divvie brake. Too much and the brake lever will hit the bar. Too little and you will have grabby wooden brakes that go ON or OFF and have no feel.
Amorti fixed his 600 front brake with Honda master cylinder that has a 1/2" diameter piston. The smaller piston area gives a longer lever stroke and makes the brake both more powerful and more usuable.
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