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andycz1
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« on: December 27, 2013, 09:23:35 AM » |
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My bike is a trike conversion from a '97 Standard.
I've noticed lately that my bike lurches slightly when I start her up cold, even though the clutch is engaged.
Once she starts and I kill it, I restart it moments later there is no lurching.
Is it because there is not enough oil on the clutch plates when first started up cold?
Anyone know why this is happening?
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Patrick
Member
Posts: 15433
VRCC 4474
Largo Florida
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« Reply #1 on: December 27, 2013, 11:05:47 AM » |
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They'll tend to do that more in the cold weather, but, how bad is it ? Are you starting it in gear ? If you work the lever a couple times and hold for just an extra second does that help.
I should probably add that I don't recommend starting in gear either, I just asked the question because it seemed as though thats what you were doing.
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« Last Edit: December 27, 2013, 01:07:09 PM by Patrick »
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andycz1
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« Reply #2 on: December 27, 2013, 11:12:45 AM » |
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Yes I start it in gear, I'll try working the lever before starting to see if there is any difference.
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John Schmidt
Member
Posts: 15240
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #3 on: December 27, 2013, 11:32:58 AM » |
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Yes I start it in gear, I'll try working the lever before starting to see if there is any difference.
I know these bikes have the clutch switch allowing the rider to start it in gear. However, starting any bike in gear is not a wise habit. In 60+ years of riding, I've seen cables snap and hydraulics fail. If your clutch master cylinder should do that in the midst of starting, the timing may be just right to launch you unexpectedly. Your m/c can fail and the clutch switch would still be engaged and suddenly you have a dangerous surprise. I'll only start mine in gear if I happen to kill it in traffic. Bad habits cause bad results.  |
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Gryphon Rider
Member
Posts: 5227
2000 Tourer
Calgary, Alberta
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« Reply #4 on: December 27, 2013, 11:37:26 AM » |
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Think of how the clutch works. Alternating disks and plates, every other one keyed either to the driving or driven splines. What holds them in contact are the clutch springs (or is it one spring; I haven't had mine apart yet?), which you overcome by pulling in the lever. When the clutch is cold, there is a layer of viscous oil between each plate and friction surface, such that even when the pressure holding them together is removed, they still stay stuck together until they are jarred apart. In your case, the starter motor turns the engine and jars them apart. In my case, I have the transmission in neutral when I start it cold and the lurch doesn't happen until I put it in first gear.
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Ricky-D
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« Reply #5 on: December 27, 2013, 12:59:19 PM » |
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It is never advisable to start any vehicle in gear.
It is hard on the starting system to start the Valkyrie in gear.
Safety experts say to always have the bike in neutral when starting the motor.
I've often seen the motorcycle lurch dangerously when the operator starts the motor while the bike is in gear.
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2000_Valkyrie_Interstate
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Bighead
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« Reply #6 on: December 27, 2013, 03:50:32 PM » |
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I had a Hardley Ableson street glide that lurched forward about 2 feet when it was started in gear  |
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1997 Bumble Bee
1999 Interstate (sold)
2016 Wing
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whitestroke
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« Reply #7 on: December 27, 2013, 06:32:19 PM » |
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Learned as a youngster to always pull the clutch in when starting a bike whether in gear or not. Less weight to spin with the kickstarter and for safety with no neutral lights/bike lurching forward when kickstarting is a good way to dump-it.
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Minibike
Honda S90
Yamaha YL100
Bultaco 250 Matador
Bultaco 250 Pursang
Yamaha 250 YZ
Triumph 650 Bonni
Honda ATC 200
2 Kids 25 year break.
Suzuki GS 500
2003 VTX 1300S,
1998 Valk standard
2008 Goldwing
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Bighead
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« Reply #8 on: December 27, 2013, 08:49:46 PM » |
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That was with the clutch pulled in  |
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1997 Bumble Bee
1999 Interstate (sold)
2016 Wing
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R J
Member
Posts: 13380
DS-0009 ...... # 173
Des Moines, IA
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« Reply #9 on: December 27, 2013, 09:20:01 PM » |
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Going through CHP Academy Motor Riders School, if we started any bike in gear we got snapped on the clutch hand with a nice fat thick ruler. You did not do that very many times. Trust me that firkin ruler stung. I'd always pulled the clutch lever in when I 1st starting riding, so it was a hard bad habit to get over.
Ya learned real quick, get the tranny in neutral, and then hit the bumps button.
Several times in cold weather the bike would lurch when ya put it in gear.
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44 Harley ServiCar   |
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BnB Tom
Member
Posts: 1708
Where'd old times go?
Frisco, TX
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« Reply #10 on: December 28, 2013, 05:40:55 AM » |
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Time to change the oil  |
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salty1
Member
Posts: 2359
"Flyka"
Spokane, WA or Tucson, AZ
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« Reply #11 on: December 28, 2013, 05:58:05 AM » |
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Time to change the oil Yup! |
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My rides: 1998 GL1500C, 2000 GL 1500CF,2006 GL 1800 3A   |
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Daniel Meyer
Member
Posts: 5493
Author. Adventurer. Electrician.
The State of confusion.
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« Reply #12 on: December 28, 2013, 06:16:34 AM » |
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Pretty normal.
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CUAgain, Daniel Meyer  |
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Patrick
Member
Posts: 15433
VRCC 4474
Largo Florida
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« Reply #13 on: December 28, 2013, 06:55:21 AM » |
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There was a time back in the dark ages when you used to have to give a kick or 2 just to break the clutch loose before attempting to start the monster,or, you were going for ride whether you wanted to or not.
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Highbinder
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« Reply #14 on: December 29, 2013, 07:12:58 AM » |
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I agree with Daniel...this is a normal condition, when cold, whether the choke is on or not the engine will run a little faster due to the electronic set up..after the engine warms up it returns to normal...I know some that can re-create this condition using a rheostat to get a power boost while racing...check with Taz... |
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