FJR Brake Master Cylinder Switch Issue

[craigo]

Thanks David and Pat,

Yeah, I have been trying to explain that to boats.net, written Yamaha USA, took the switch to Motoworld in El Cajon and no one had an answer.

I see a 14mm 1st gen master cylinder in my future.

Thanks for the help and proving I'm not nuts 

CraigO

[craigo]

Something to do with ABS? Other than that, I got nothing....

Like David, I also have FZ1 brake m/c...it is interesting to note that later FJR's also came with 15mm m/c's
15mm is only slightly smaller than the FJ oem 5/8's m/c...the 14mm's work much better.

David, I know in the past you have been leery of grabbing to much front brake. Let us know how you like the feel of the 14mm as compared to what you had..., I like mine much better. Remember..2 fingers!!

Or we could all wish to be like Eddie Lawson and only need 1 finger brakes...



CraigO

[SlowOldGuy]

David, I know in the past you have been leery of grabbing to much front brake. Let us know how you like the feel of the 14mm as compared to what you had..., I like mine much better. Remember..2 fingers!!

No problem Pat, I have the monobloc caliper/14mm master setup on my FZ1.

I like the extra modulation provided by the 14mm master, but I swear that the brakes on both of my FJs "feel" more powerful than the FZ.  Just a confirmation that brake "power" is mostly a function of the pads.

I also recently installed an FJR clutch master to relieve the pull of a double spring clutch.  Kind of disappointed in the adjustable lever.  While the pull is lighter, the clutch lever must be on setting 5 in order to pump enough fluid to release the plates.  Any other setting causes it to not disengage fully.  Not sure I'm going to keep it.

DavidR.

[Pat Conlon]

Hmmm, On my FJR clutch m/c the #5 lever setting moves the lever closest to the hand grip and the #1 setting furthest away.
I have the Barnett spring pressure plates in both bikes, and they work fine on the lowest #5 setting.

[SlowOldGuy]

Technical nits.

Okay, I haven't even riddden it yet.  Whatever the longest throw setting is the only one that works.

There's always been a huge difference between my FJ clutches.  On the '85, the clutch starts to engage almost as soon as the lever is released.  On the '93, the lever is almost all the way out before it starts to engage.

DavidR.

[rktmanfj]

I see a 14mm 1st gen master cylinder in my future.

CraigO

Or just use a pressure switch on the one you have...   

[Derek Young]

I also recently installed an FJR clutch master to relieve the pull of a double spring clutch.  Kind of disappointed in the adjustable lever.  While the pull is lighter, the clutch lever must be on setting 5 in order to pump enough fluid to release the plates.  Any other setting causes it to not disengage fully.  Not sure I'm going to keep it.

DavidR.


[/quote]



Same with my ZZR1200 clutch master and double clutch spring on my 86.  I find it works best between #1 and #5 setting where there is no depression to hold the pin.  Slightly longer throw.

Derek

[SlowOldGuy]

Thanks Derek!
I'll give that a try.

DavidR.

[Mark Olson]

I have the early fjr master and have no problem with the brake switch , works just fine.

I must admit I did the mod so long ago I don't remember if I transferred the fj sw onto it or if it is fjr. 

[Mark Olson]

Technical nits.

Okay, I haven't even riddden it yet.  Whatever the longest throw setting is the only one that works.

There's always been a huge difference between my FJ clutches.  On the '85, the clutch starts to engage almost as soon as the lever is released.  On the '93, the lever is almost all the way out before it starts to engage.

DavidR.

uhhh, DavidR  , your 93 is correct and the 85 is messed up .  try using the clutch master off the 93 on the 85 and if the release is still next to the grip your slave is hosed.

[SlowOldGuy]

Thanks, Mark
But it has always been this way.  Slave is good. 
Might have something to do with the double spring.  The '93 is still a single spring.

DavidR.

[Mark Olson]

Thanks, Mark
But it has always been this way.  Slave is good. 
Might have something to do with the double spring.  The '93 is still a single spring.

DavidR.

spring would just make a harder pull, perhaps air in line. rubber lines?
maybe the pushrod is worn down.
do you use the same fluid in both bikes?

I may sound like a dog with a bone , the reason is I prefer a clutch release next to the grip and have always hated hydraulic clutches.

[SlowOldGuy]

No air in line.  Everything bubbled up to the M/C during the swap to the FJR M/C.  I did hit the bleeder on the slave a few times just in case, nothing but fluid.  Same DOT5 in both systems.

What I have noticed, however, is the '85 clutch may be dragging more.  Almost like the plates are thicker.  When I start to release the lever, it starts grabbing immediately.  But it's not fully engaged until the lever is almost all the way out.  When out on the road, I can barely pull on the lever and it will start disengaging.  So, it's like the plates are engaging quicker/sooner but are not fully loaded until about the same place in the travel as the '93.

DavidR.

[rktmanfj]

Is that retaining wire still in there?