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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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 Posted: Fri Apr 03, 2009 11:59 am Post subject: Easing Off The Throttle Causing Engine To Slow Down Faster |
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than normal...
i know most motos have smooth deceleration when easing off the throttle...
i know that the bugeye motobrick has never experienced the smooth deceleration as other motos because of some kinda built in something that immediately slows down the engine...
so... recently... when i ever so slightly ease off the throttle the engine wants to slow down faster than ever... causing deceleration to be jerky... sometimes causing m o to slap my helmet with hers... and when easing back on the throttle its jerky too...
no surging... just jerky getting off... just jerky getting on...
what you old geezers think... throttle body sync...
j o
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yeeeeeehaaaaaaa...
Last edited by owrstrich on Fri Apr 03, 2009 12:33 pm; edited 1 time in total |
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Off the grid
Chaotic Good
Joined: 05 Jul 2006
Posts: 3414
Location: At the local taco truck waiting for Jo.
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| Posted: Fri Apr 03, 2009 12:01 pm Post subject: |
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Sounds like drivetrain drag.
Cha-CHING!
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Bane of your existence since July 2006
2007 Triumph Tiger ABS. "Sabertooth"
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Saltcreek
Flying Brick Rider
Joined: 22 Oct 2008
Posts: 957
Location: New Hampshire
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| Posted: Fri Apr 03, 2009 12:26 pm Post subject: |
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Would drivetrain drag be evident rotating the rear wheel in neutral on the centerstand? It would have to be significant to cause that effect.
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Jim
1994 K1100LT Mystic Red, bfd, 37000 miles, sold 
2009 Wilderness Systems Zephyr 155 ST
2002 Litespeed titanium |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Apr 03, 2009 12:30 pm Post subject: |
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Use the clutch instead. 
TPS?
Throttle cable issues?
Dragging brake?
Ship the bike to me and I'll take it for a test ride.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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| Posted: Fri Apr 03, 2009 12:38 pm Post subject: |
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let me add to this... just thought about it when going through drive train drag in my immense brain...
it seems as if i picked up a tiny bit of free play in the throttle... what happens is when im easing off the throttle i have a bit of of rotation until the engine reacts... same thing when getting back on the throttle...
i took the assembly apart on the handlebar... the cable and linkage are solid... no free play in the cable or linkage... seems like its on the engine side of the deal... not the drive train...
hungry dungee 1.5 tech days... i hope not...
j o
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Apr 03, 2009 12:45 pm Post subject: |
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You might try hosing down the springs on the sides of the TBs with some WD-40.
You probably already know: Don't put anyhting inside the cables because it degrades the lining.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Jim
Site Admin
Joined: 17 May 2003
Posts: 3841
Location: WHERETHEFUNNEVERENDS
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| Posted: Fri Apr 03, 2009 7:00 pm Post subject: |
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cool - you have one of those rare K11's with a Jake brake...
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Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000
"We shall not all die, but we shall all be changed." |
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jr'sbmw
Big Brick Rider
Joined: 04 Nov 2008
Posts: 54
Location: Fl
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| Posted: Fri Apr 03, 2009 7:52 pm Post subject: |
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Flying Duck mentioned TPS. Let me go back to my 85K100RT. I have had the switch apart 15 yrs ago to see what was inside and if my memory is correct, it only had a breaker point type switch inside, no potentiometer like the newer K bikes? Anyway, if I disconnect the switch, the bike would coasts easily. When hooked up, it acts like a jake brake. Somewhere I was told, the switch shuts off the injectors on decel?
It might be interesting to disconnect the TPS and see what happens. Worse that could happen is it runs bad without a tps and could set a code. |
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Shoganai
Biscuit Fluffer
Joined: 27 Apr 2005
Posts: 2234
Location: Culpeper,VA
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| Posted: Fri Apr 03, 2009 10:42 pm Post subject: |
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| Jim wrote: | | cool - you have one of those rare K11's with a Jake brake... |
What is 'drivetrain drag'? 
EDIT: I found out.  http://www.ifirobotics.com/docs/efficiency.pdf
http://www.rbracing-rsr.com/gearspeed.html
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1993 K1100RS aka The Shop Whore
1994 K1100RS aka Blue Streak
The long road is a rainbow and the pot of gold lies there.
So slip the chain and I'm off again,
You'll find me everywhere. I'm a Rover. - JT
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Sat Apr 04, 2009 12:23 am Post subject: |
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| Shoganai wrote: | | What is 'drivetrain drag'? l |
I'm thinking this qualifies:
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Jim
Site Admin
Joined: 17 May 2003
Posts: 3841
Location: WHERETHEFUNNEVERENDS
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| Posted: Sat Apr 04, 2009 12:31 am Post subject: |
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Drake - I thought you got rid of that outfit!  
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000
"We shall not all die, but we shall all be changed." |
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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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| Posted: Sat Apr 04, 2009 12:36 am Post subject: |
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you should see what he wears to enumclaw...
j o
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yeeeeeehaaaaaaa... |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Sat Apr 04, 2009 12:41 am Post subject: |
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| owrstrich wrote: | you should see what he wears to enumclaw...
j o |
Why do you hate horses?
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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