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cyclonic separator

 
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2K



Joined: 23 Jul 2009
Posts: 1
Location: Canada

PostPosted: Sun Jul 26, 2009 12:58 pm    Post subject: cyclonic separator Reply with quote

Has anyone had experience cleaning/servicing the "cyclonic separator" supplied by the crankcase vent tube with feeding lines to the throttle bodies and crankcase?

I have been able to free (two tabs) but not remove (I have not removed the airbox top portion from my 1992 K11LT because it would require a lot of additional work and expense and I don't think I'd have any more success with it out) the upper portion of this device which is contained within the top of the airbox (the lower separator portion is moulded into the upper airbox).

I can't find a picture/graphic of this separator anywhere to know how it has been designed but I understand that it contains a sponge of some kind which over time might foul and disintegrate blocking the crankcase vent tube to create crankcase pressure (although I've heard that these machines require positive crankcase pressure -- or was that only the K75?) leading to seal leakage. Question [/b]
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Jim
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PostPosted: Sun Jul 26, 2009 2:13 pm    Post subject: cyclonic separator Reply with quote

Hi 2,

yes, some people have made modifications to the airbox separator: http://k11og.org/forum/viewtopic.php?t=6515&highlight=cyclonic

and: http://k11og.org/forum/viewtopic.php?p=24604#24604

Welcome to K11OG!
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1997 K1100LTSE 94,000
1995 R100RT Classic 13,000 Beemered
1991 K75RTP 46,000 - in progress
1992 R100R 22,000 - FOR SALE

"We shall not all die, but we shall all be changed."


Last edited by Jim on Sat Mar 24, 2012 9:19 am; edited 1 time in total
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SugarHillCTD
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Joined: 10 Oct 2007
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Location: Sugar Hill, NH, USA

PostPosted: Sun Jul 26, 2009 5:00 pm    Post subject: Reply with quote

cyclonic separator

Wasn't that the last item that Billy Mays hawked? Laughing

Sorry..............
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owrstrich
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PostPosted: Sun Jul 26, 2009 5:30 pm    Post subject: Reply with quote

thats right... i gotts 2 of them... i only had to pay shipping and handling on the second one...

j o
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SugarHillCTD
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PostPosted: Sun Jul 26, 2009 6:05 pm    Post subject: Reply with quote

2K,

Sorry about the B.M. comment. Shocked

Since you are a newby, I need to explain that this forum has some great advice but a lot of jokes and goofy comments. Like Billy Mays.

He was someone who did television "infomercials" selling all kinds of wacky stuff.

By the way, WELCOME to the asylum.........

John
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'92 K100RS4V Pearl White
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IBA Several-SS1k, BBG, 50CC NYC to S.F.
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owrstrich
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PostPosted: Sun Jul 26, 2009 7:29 pm    Post subject: Reply with quote

i thought you were talking about billy mays the san fransicko center fielder...



j o
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SugarHillCTD
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PostPosted: Sun Jul 26, 2009 8:49 pm    Post subject: Reply with quote

johnny,

Me thinks you are in another cow protein induced stupor............

"Billy" Mays??????
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'92 K100RS4V Pearl White
'03 R1100S Boxer Cup
IBA Several-SS1k, BBG, 50CC NYC to S.F.
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PostPosted: Sun Jul 26, 2009 9:27 pm    Post subject: Reply with quote


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Saltcreek
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PostPosted: Mon Jul 27, 2009 7:28 am    Post subject: Reply with quote

Hey this is 2's first appeal to the forum and he gets one serious response out of six?

Whats wrong with you people????

Welcome, 2.
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SugarHillCTD
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PostPosted: Mon Jul 27, 2009 7:48 am    Post subject: Reply with quote

Rolling Eyes Rolling Eyes Rolling Eyes

MY FAULT. I started it. My only excuse is that I can't be serious about this bike any more. So I'll keep out of actual tech discussions.

Sorry 2K.
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'92 K100RS4V Pearl White
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max
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PostPosted: Tue Aug 04, 2009 7:31 am    Post subject: Reply with quote

Tom - I sent you a PM with the pics of my dismantle anyway... I may try to find a place to post the pics of the new bypass setup when I take them & I've got a website somewhere...

Max
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Turbine
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PostPosted: Tue Aug 18, 2009 8:54 am    Post subject: Reply with quote

I have just asked Max to relay the pics to me also regarding his mod.
I'll also put it out to everybody the question of the geabox excess that my bike is giving out.
Have checked clutch boots.
Has any body changed the clutch rod?
I have not found the seal info that the clutch rod runs through at the backend. Any info on that also would help.
Thanks again.
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max
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PostPosted: Sat Sep 05, 2009 7:32 am    Post subject: Lotsa pics - crankcase breather, fan ballast & CCS plumb Reply with quote

OK - finally got around to taking pics, as part of installing an Audiovox CCS100

History:

- leaking clutch seal even after replacement
- bike was apparently rebored next oversize by PO
- high crankcase pressure all the time (even at idle) - significant "wuffing" out the oil filler
- bike's not a spring chicken - 1996 RS, but 188000kms now

First step:
- removed the cyclonic oil sep in the airbox (some cutting involved)
- found full of coarse polyurethane foam and oil sludge - certainly wouldn't work as a separator
- came to conclusion that never did work as a cyclonic separator, that's why BMW added the foam









Second step:
- thought what the hell
- added a vacuum line across all 4 cylinders bleed nipples, then connected this to the crankcase. System gives full vacuum even at idle; oil filler now gets sucked onto hole, not blown off.
- added over-pressure non-return valve into original lines, so if ever get high crankcase pressure it "blows off" into the old breather system "rail" on the back of the throttle bodies.

PICS: Note -
- line from the vacuum "rail" is the one between TB1 & 2 - the other one goes to the cruise controller
- all the holes/lines for the original system are blocked off in the airbox, since they're all AFTER the filter
- the added non-return valve (behind the TPS) feeds into the END of the original breather piping - move the cap from the end to the middle (the usual feed point). NRV is the one used to feed the vacuum brake booster on an E36 BMW car.







So now the crankcase gets vacuum that DECREASES as the throttles open, instead of INCREASES. YMMV, works for me.

Added steps - Fan ballast

- does like the cars do - sets the fan running at < 100% as required, BEFORE the heat builds up
- wired across the output of the fan relay, so main curcuit can still kick in & put fan on at 100% as needed
- soldered to the legs of the fan relay so no loom hacking
- resistors (4 x 5w, 20ohm in parallel) strapped to frame tube to get rid of heat





White stuff is heatsink compound (eg for computer CPU chips) & used hose clamps as though not hot, probably too warm over time for nylon cable ties. No more cooked legs, been out in 35degC summer weather & still no "fast fan" overheating.

CCS100 "plumbing"

- thanks Mike for the assist in getting a unit to poor ol' NZ
- went for throttle shaft connection between TB 1 & 2 as others too "busy"
- didn't like the idea of an off-line "pull" (as per Ducks' pics for his LT), so plumbed it thru the plastic "tray" above the airbox, with reinforcing (washers, extra cable-ties of tray to frame)
- with this setup, use "long lasso" and no beads; can get plenty of slack - or none - as adjuster range is dead-on. Also nothing for cable to bind up on (BUT YOU **MUST** cable-tie lasso to the TB shaft so it can't go askew and use up all your slack and then keep the throttles slightly open)







Last edited by max on Sat Sep 05, 2009 8:02 am; edited 2 times in total
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Jim
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PostPosted: Sat Sep 05, 2009 7:52 am    Post subject: Reply with quote

Max - unless I missed it somewhere, I don't see how old your bike is. How many Km?
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1997 K1100LTSE 94,000
1995 R100RT Classic 13,000 Beemered
1991 K75RTP 46,000 - in progress
1992 R100R 22,000 - FOR SALE

"We shall not all die, but we shall all be changed."
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max
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PostPosted: Sat Sep 05, 2009 8:12 am    Post subject: Reply with quote

Nah, I missed it (and was still fixing broken pix links) - 188000kms now, but it is a 96 so at least a little younger than it could be!

Oh - and most not done by me (only abt 20000kms in 4yrs). PO was commuting intercity daily, so he put on about 120000kms in 2-2.5yrs before going to a K12 - so at least the travel was open-road (and the bike well maintained - came with the RaceTech springs & Ohlins too).

Max
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