K100RS parked for four months outside in all weathers

[The Mighty Gryphon]

I hear you on losing mirrors. 

Maybe we need to reevaluate our stand on doing frappichino conversions to RS bricks in order to release more mirror parts on to the market.

[Laitch]

Maybe we need to reevaluate our stand on doing frappichino conversions to RS bricks in order to release more mirror parts on to the market.

I support that view. It will also make more parts bikes available at lower cost.

[Filmcamera]

Well that makes it official - we need to promote the cafe conversions of bricks so the rest of us can keep our stock ones in nice shiny plastic bits etc

[Filmcamera]

I stripped and cleaned the front master cylinder today - it wasn't even dirty and had no crud on it.  The seals were perfect.


I also loosened and refastened every connection for the whole front brake system and re-bled the brakes. 


Still nothing - lever goes straight to grip with zero pressure.


The only thing I can thank is that there is a big air bubble stuck somewhere in the system.  So tomorrow I am going to take the calipers off the bike and strip them as well and start again from scratch with fresh brake fluid etc as well.


It is a head scratcher because with no leak there HAS to be pressure if there is no air in the system.  That is why, even though I get no air when I bleed the brakes, I am thinking there is some somewhere.

[Martin]

If you still have it put your old hose back on the one closest to the M/Cyl . Then bleed out the air in the M/Cyl and hose, and using a line clamp or multi grips with pads clamp of your old hose as close to the M/Cyl as possible. This will show you whether the trouble is in the M/Cyl or in elsewhere. You can do this with the hose you already have on but it is possible to damage the line by doing this, so it is better to use the old one.
Regards Martin.

[Filmcamera]

I get you, the idea being that if the lever still goes straight to the grip when the line is clamped close to the M/C the M/C is somehow damaged and if not then the issue is somewhere else?

[Filmcamera]

1a) Yes
1b) Yes

[Martin]

 :2thumbup: You got it, that was how I found that I had a one way leak in the hose. This will narrow down your search possibly. :dunno
Regards Martin.

[Filmcamera]

I don't have an old hose but what I do have is an old banjo bolt so I plan to fill the hole with some wire, then solder over the top to effectively turn it into a solid bolt then install that at the M/C.


Johnny I will try that as well, need to get myself some more DOT 4 first.

[Filmcamera]

I took Johnny's advice, though I realised before I started that 26 pumps was woefully inadequate and that what was clearly needed was 27 pumps - the cube of three which is of course the exact number of letters to be found in BMW...


So 27 pumps and a good few burbs of air from my 'bled' brakes that would have made an unweaned baby proud it worked and I now have a nice stiff lever - funny that pumping lots made it stiff...[size=78%] [/size] :nono


Haven't had a chance to do a test drive yet but it feels ten times better than at any time since I have had the bike to date.


Thanks Johnny  :yes


27 rules!!

[Laitch]

27 pumps - the cube of three which is of course the exact number of letters to be found in BMW...
27 rules!!

Numerology uber alles!

[Filmcamera]

Not really, I assume air in the system which just never got bled out before because I was doing 4-5 bubble free pumps and calling it done when more were needed.


Live and learn - I was a total novice when I got the bike so things like that take experience I guess.

[Filmcamera]

Hoarder? Me??? Well maybe a little


I was contacted by one of the only other two Brick owners in CR earlier this week.  He has a K1100 LT he is turning into a cafe racer.


So...


For $75 I picked up all the stuff in the photo!


Do I need it - hmm not really but $75!


Gen 3 cases with locks, 35 lt top box, rear cowl, Corbin seat (that seat has me intrigued - it looks like it mounts like a regular seal but is formed to be a low seat, anyone heard of that?)


I also got mud flap extensions for both the front and rear parts of the rear mud guard!


First issue is I can't work out how to take the top box off the mount, can someone tell me please? (edit - nevermind I worked it out)


Now it seems I need to buy the mounting bracket - one arm is busted - though a fiber glass repair might be possible I guess.


Oh and best of all - the six locks on the Gen 3 cases - they open with my existing ignition key!

[Elipten]

Well worth $75


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[Martin]

 :2thumbup:  Score and a half one side cover is worth that in OZ you've got over a grands worth.
Regards a jealous Martin.

[The Mighty Gryphon]

Wow!  Easily a grand, maybe more.  Stuff looks to be in very good nick.

[Filmcamera]

Yeah pretty good as far as I can see.  Any thoughts on that seat?  Compared t the corbin the bike came with it is a different shape, I am just not sure if the driver is lower or just the passenger higher...

[Martin]

Try it on your bike takes about two minutes to swap, you just pull out the little "C" clips on the hinges.
Regards Martin.

[Filmcamera]

It seems like it is maybe half an inch to an inch taller than my low seat.  So it mainly comes to down to looks and which my wife finds more comfortable

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[jimboknowsit]

I have been bleeding and testing my brakes and also tying them up overnight as suggested.  That had been working fine, I bled them yesterday, did the left and right with the handle bars and bled them again.  After that I had a pretty good level of feel in the brake lever.  Jost to be sure I tied the handle back about half way overnight to get an remaining air to the top.  This morning I took the tie down off and tested the lever.  Straight to the bar with zero pressure at all.  Overnight the brakes have gone to worse than ever.  There is no leak anywhere so I am thinking maybe the master cylinder needs a rebuild?  I bled the brakes and got some feel back but not much.  Any suggestions?

I have a 1994 K1100rs that sat up for 5 years or so. I had the same problem. I ended up replacing the front and rear master cylinder,purging the ABS module and replacing the brakes lines. Brake lines were first.


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[Filmcamera]

I did manage to fix the brakes, thanks to help from Johnny and others. 


When tieing the lever back overnight it seems tieing it all the way back against the grip is NOT good.  That forced the MC piston out too far.  So I have to remove, clean and reinstall the piston then bleed and bleed and bleed only pulling lever 1/2 way back until I was blue in the face - I think I put four MC's full of fluid through the system starting at the ABS then doing LHS then RHS of the calipers.


That did eventually get me some pressure back on the lever and when I test rode it yesterday I had proper brakes for the first time since getting the bike. 


I celebrated by playing on some twisties!  :riding:

[Laitch]

When tieing the lever back overnight it seems tieing it all the way back against the grip is NOT good. 

Did you realize wrenchers were warned 2.5 times in the posts to not go pass the halfway point when bleeding that brake system? Were you exploring the limits? :giggles

[Filmcamera]

It was actually tied back only half way when when it gave out.

[Filmcamera]

I swapped all six locks out of the new set of luggage so I now have the ignition key and six luggage keys that match.


Sadly I still have one key for the fuel cap, one for the 22 lt top box, no key at all for the seat lock and a keyless lock for the 35 lt top box...


Are the basic lock and key combos all identical or are they slightly different for example for the seat lock and the fuel cap?


I'd really like to end up with one single key for the whole bike if possible. I plan to visit a locksmith tomorrow to see if he can help with me most of the locks but am not sure about the seat lock

[The Mighty Gryphon]

This may help.  I did this to my bikes to make all the luggage work on it's bike's ignition key.

http://www.k100.biz/pdf/FAQ/FAQ_K100_tips.pdf#%5B%7B%22num%22%3A1294%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22XYZ%22%7D%2C0%2C976%2Cnull%5D

If you do a search on the net I think there is a description of the process with some good photos.