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#1
Quote from: FJmonkey on Today at 10:59:43 AM.....This is also why some of us have converted to DOT5 (ok for street but can't take the higher heat of hard frequent braking.
Au contraire my simian amigo... DOT 5 has substantially higher wet and dry boiling points than DOT 3/4.

However, DOT 5.1 vs DOT 5 are very close

DOT 5 wet: 356°F
DOT 5.1 wet: 356°F

DOT 5 dry: 500°F
DOT 5.1 dry: 518°F

That said, I have DOT 5 in my '84 and DOT 5.1 in my '89. There is a subtle difference between the two.
Both front brake systems with identical components, Spiegler lines, R-1 calipers and 2001 FZ1 14mm masters.
The lever feel with the DOT 5 is softer (not spongy) than the system with DOT 5.1.


#2
If you are using DOT3, 4 or 5.1, keep it covered/sealed from the air when possible. They will absorb moisture. This is why we need to change/flush the fluid when it gets dark. This is also why some of us have converted to DOT5 (ok for street but can't take the higher heat of hard frequent braking.
#3
I leave it closed. There is air space under the covers, and when the bubbles make it there you are set.
#4
Modifications / Re: Windscreen
Last post by Motofun - Today at 06:41:50 AM
I did a similar thing to compend
Quote from: Sparky84 on November 18, 2025, 02:51:13 PM
Quote from: Pat Conlon on November 18, 2025, 12:59:43 PMHere's what it looks like:


My Helmet is just above turbulence, only problem with taller screens is that you don't get any cooler air.

Pat, I like that big chunky "heel" on your side stand, does the extra weight affect the stand staying put when in the "up" position ... like when your riding, doesn't bounce around?

What's it made of and how did you fix it on ?
I've been Thinking of a carbon fibre block underneath .


[/quotes
Quote from: Sparky84 on November 18, 2025, 02:51:13 PM
Quote from: Pat Conlon on November 18, 2025, 12:59:43 PMHere's what it looks like:


My Helmet is just above turbulence, only problem with taller screens is that you don't get any cooler air.

Pat, I like that big chunky "heel" on your side stand, does the extra weight affect the stand staying put when in the "up" position ... like when your riding, doesn't bounce around?

What's it made of and how did you fix it on ?
I've been Thinking of a carbon fibre block underneath .


I did the same thing but i used a hockey puck instead of aluminum.
#5
Yamaha FJ1100 / FJ1200 Running Problems / Re: Front brake spungy
Last post by filsurs - Yesterday at 11:20:34 PM
Wow,  I never knew that  thxs.  Must the reservoir cover be open or closed during this process?
#6
Yamaha FJ1100 / FJ1200 Running Problems / Re: Front brake spungy
Last post by FJmonkey - Yesterday at 08:03:39 PM
The theory is compressing the fluid also compresses the air bubbles. Smaller air bubbles fit through the holes easier, rises up into the reservoir and it self bleads that last little bit.
#7
Yamaha FJ1100 / FJ1200 Running Problems / Re: Front brake spungy
Last post by Waiex191 - Yesterday at 05:21:42 PM
Quote from: filsurs on Yesterday at 10:41:51 AMwhat will be the effect if tie-down the handle?
That lets the bubbles float up to the reservoir overnight where they no longer cause softness in the brake lever.  I do this after service too.  Also works on the clutch.
#8
Quote from: 86FJNJ on Yesterday at 08:25:28 AMMy suggestion would be to remove the rear wheel and check everything and likely just change the wheel bearings. Have you ever changed wheel bearings before?

How many miles are on your chain and sprockets?

These bearings should be what you need if your FJ is 1984-1990

https://www.rpmracingca.com/proddetail.asp?prod=M%2FC%3ARWBK%28E%29
thxs...will have a look :good2:
#9
Yamaha FJ1100 / FJ1200 Running Problems / Re: Front brake spungy
Last post by filsurs - Yesterday at 10:41:51 AM
Quote from: Sparky84 on November 07, 2025, 03:49:53 PMAs suggested, tie that lever back and it seems there is still air in there somewhere.

More bleeding, more and more.
Jiggle that lever, don't pull it all the way it but just giving it multiple jiggles (and you are only just moving it a touch).
Perseverance is the key Chip  :good:

You are using new fluid ?
what will be the effect if tie-down the handle?
#10
Modifications / Re: Show me your Corbin seats
Last post by MarioR - Yesterday at 10:23:41 AM
Quote from: Bozo on November 06, 2025, 09:41:53 PM
Quote from: MarioR on November 06, 2025, 07:36:24 PM
Quote from: Bozo on November 06, 2025, 05:18:18 PM
Quote from: aviationfred on November 22, 2016, 09:53:49 AMI have had both Gunfighter and the Gunfighter and Lady seats on a few bikes over the last 25 years. IMO....stay away from leather for the area that you actually sit in. On 300+ mile rides, by the end of the day you will think you are sitting on a 1x12 piece of wood. Also, the vinyl weave material has a tendency to harden and crack over time if the bike is not garage kept.

I had my gunfighter and lady seat recovered locally and I chose a marine grade vinyl.

Fred

I did have a Gunfighter for a short time that was on my Black bike before I sold it. The seat was purchased by a fellow member.

I bought my Corbin about 8 years ago, rode for about two weeks and then stored it. Agree it feels like a plank but being short the side dig in when at a standstill. It made my great suspension feel extremely hard. It also weights twice as much as the standard sheet. Maybe ok for taller riders but I'm back on my standard seat.

Do you want to sell it? (popcorn)

Not sure at the moment, because an FJ owner in Australia was interested, am back from holidays end of Nov if nothing goes through I'll let you know. It has been under bedding cover but I just noticed a small rip

I got it. LMK   :morning1: