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06-20-2014, 01:28 AM | #1 |
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Troubleshooting a V2K
I know that members here aren't too familiar with the Vulcan 2000, but this forum is better than any other Vulcan forum, so I figured I'd start here.
Tonight I went riding with some fellow Vulcan riders and one of them rides a beautiful V2K classic. While we were enjoying a meal he started picking my brain concerning some problems the bike has been having and one of the problem had me stumped. He actually let me take the bike for a spin to recreate the problem and sure enough as day I was able to create it multiple times. In second gear, and seemingly only in second gear, at about 38mph (no tach) the bike misfires. It almost felt like it was just a single cylinder too. It doesn't stall. The bike keeps going, but it's quite noticeable when it happens. The bike actually jerks fairly hard when it happens. If you accelerate slowly or shift early it doesn't happen. Any ideas?
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Last edited by Jared; 06-20-2014 at 12:06 PM.
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06-20-2014, 02:02 AM | #2 |
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But only in 2nd gear?
That's right at 3000 rpm. 1st gear 24 mph 2nd gear 37 mph 3rd gear 50 mph. at 3000 rpm on the v2k. Try 1st,2nd and 3rd gears at these speeds with the same roll on throttle acceleration as you would to try and duplicate the problem that occurs in 2nd gear, in 1st and 3rd also. Find out if it does it when the engine is cold also or only once it's warmed up. It doesn't sound like an ignition misfire if it's only happening in second gear and only at the certain speed. Possibly a problem with the ECU or maybe the fuel controller if he has one. I'm not talking from experience now so bare with me. I'm reading into ideas from another thread / another forum. Says to disconnect the aftermarket fuel controller, if he has one, and see if the problem goes away or changes. You could try this for starters.
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2006 Nomad 1600 v&h duals, fi2000 grasshopper (kawboysix)
Last edited by kawboysix; 06-20-2014 at 02:41 AM.
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06-20-2014, 10:06 AM | #3 | |
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To minimize wear on the components I recommend NOT ridin the skoot in any manner which causes this to happen. Damage has already happened, further occurrences will only make it worse. Typical repairs will be replacing both of the gears involved with second gear. I highly recommend undercutting the new gears to minimize this happening again. IF the original gears are not worn too bad, I have been able to undercut them which repairs the damage and establishes that undercut surface. Also the shift fork will have some damage and the shift drum slot for the second gear shift fork must be inspected for damage/wear. RACNRAY
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"TRUE HAPPINESS IS IN THE HEART, NOT IN THE OUTSIDE FIXES" WITH OVER 46 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION! "WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY"
Last edited by RACNRAY; 06-20-2014 at 10:34 AM.
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06-20-2014, 10:53 AM | #4 |
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You're having trouble shooting a V2K? I suggest you try hollow points.
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Scott "Cactusjack" Hanks VBA #00105 H.O.G. #4250060 2011 H-D Ultra Limited 103ci :: 2011 HD Electra Glide Ultra Limited w/Stage 1 :: Rallies: Mesquite '08|Custer '09|Cortez '10|Crescent City '11|Kanab '12|Antlers '12|Estes Park '13|Antlers '13|Orofino '14|The Dalles '17 |
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06-20-2014, 10:57 AM | #6 |
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And along comes the peanut gallery.
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2006 Nomad 1600 v&h duals, fi2000 grasshopper (kawboysix) |
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06-20-2014, 11:12 AM | #7 |
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Thank God for the peanut gallery, they made me laff and I needed that today!!!
RACNRAY
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"TRUE HAPPINESS IS IN THE HEART, NOT IN THE OUTSIDE FIXES" WITH OVER 46 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION! "WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY" |
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06-20-2014, 11:27 AM | #8 |
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06-20-2014, 12:07 PM | #9 | |
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06-20-2014, 12:50 PM | #10 | |
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Skoots use what is called a "constant mesh" transmission which does not require the space of a typical auto manual set-up, that is the main advantage as our skoots don't have lotsa room as the cars/trucks do for a tranny. Unfortunately the way power is transmitted thru a selected gear in a constant mesh tranny is thru engaging "engagement dogs" (male protrusions on the sides of the gears) to the neighboring associated gear's dogs, or in some cases "female" slots. Lotsa torque is applied to relatively small contact surfaces, and as these surfaces wear they have reduced ability to hold together. So when that wear becomes great enuff then under whatever level of acceleration needed to overwhelm that gear set's ability to remain engaged, the sliding gear of that gear set will get pushed out of engagement. But it is being held in place by the shift fork which is in it's position dictated by the groove it follows in the shift drum. Neither of these want to move so the shift fork acts as a spring, bending away with the gear then pushing the gear back into engagement. Second gear is the most common gear to fail on most skoots. I would HOPE a dealer would have someone good enuff to tackle this repair as it's pretty involved, and unfortunately expensive. RACNRAY
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"TRUE HAPPINESS IS IN THE HEART, NOT IN THE OUTSIDE FIXES" WITH OVER 46 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION! "WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY" |
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06-20-2014, 12:56 PM | #11 | ||
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I, too, would like to know what causes this. Is it just too much power for the part Ma Kaw used? Until I get it fixed, I will just take it easy in 2nd gear. Since I am going to put Euro Gears in the bike, I will do the repairs then. |
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06-20-2014, 01:21 PM | #12 |
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Undercutting is a machining operation where I cut a different angle on the engagement dogs and in the engagement slots. This altered from stock angle helps to "lock" the gears into engagement.
As for the reasons of the failure, read the first sentence of my last post. I have been undercutting gears since, oh bout 1984 or so. You can send the tranny to me for inspection so I can assess what is needed. RACNRAY
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"TRUE HAPPINESS IS IN THE HEART, NOT IN THE OUTSIDE FIXES" WITH OVER 46 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION! "WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY" |
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06-20-2014, 01:34 PM | #13 | |||
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06-20-2014, 01:36 PM | #14 |
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another question I have for you - if I ride the bike, without the skipping (meaning I shift early and keep the throttle light), am I going to do anymore damage? If I can out off the repair until winter, I would prefer to do that, so I don't miss any riding time.
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06-20-2014, 01:48 PM | #15 | ||
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RACNRAY
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"TRUE HAPPINESS IS IN THE HEART, NOT IN THE OUTSIDE FIXES" WITH OVER 46 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION! "WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY" |
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