|
08-08-2017, 11:38 AM | #1 |
Join Date: Aug 2016
Posts: 18
|
HAWK on the COBDRI
I took my 2015 HAWK on the Colorado Backcountry Discovery Route last week. It was doing fine for 2 days then started missing at higher RPM. Finally it quit, like I'd turned off the switch. Checking it I found it had a very weak spark. Ignition coil? CDI? Both?
Any good parts source other than RPS? Last edited by PalladinSC; 08-08-2017 at 11:44 AM. Reason: Spelling |
|
08-08-2017, 12:34 PM | #2 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
|
If it's at all bright outside, a strong spark can be difficult to see. What plug do you have in there?
__________________
Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
|
08-08-2017, 12:57 PM | #3 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,707
|
Check that you have a good ground connection at all grounding points.
__________________
2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel |
|
08-08-2017, 01:57 PM | #4 |
Join Date: Aug 2016
Posts: 18
|
HAWK on the COBDRI
All the connections were tight. Spark, even with a NEW NGK plug was very weak.
|
|
08-08-2017, 02:45 PM | #5 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
|
I wonder if the magneto coil slipped too close/too far away from the rotor. The E-gap is pretty sensetive. If you put a business card between the magneto coil and the rotor, rotate the rotor until the Magnet sucks the coil down to the business card, tighten the screws, and Bob's your uncle....ARH
Last edited by Ariel Red Hunter; 08-08-2017 at 02:47 PM. Reason: miss spell |
|
08-10-2017, 11:53 AM | #6 |
Join Date: Aug 2016
Posts: 18
|
I wonder if I could convert it to a stick coil. Any thoughts?
|
|
08-10-2017, 01:02 PM | #7 |
Join Date: Jan 2016
Location: Mooresville NC
Posts: 2,100
|
Bummer to hear. did you have to abandon the trip at that point?
|
|
08-10-2017, 03:46 PM | #8 |
Join Date: Aug 2016
Posts: 18
|
Did not have to abandon the trip. My nephew was trailing us in his Toyota FJ Cruiser w/trailer so we just loaded it up onto the trailer and continued the march. I later got to ride my BIL's Suzuki DRZ400S and also Paulie Heydemann's Yamaha WR250R. I still had a great time and would go again. I was prepared for some kind of breakdown, just not that one. Who carries extra ignition stuff (other than spark plugs)?
|
|
08-10-2017, 04:25 PM | #9 | |
Join Date: Jan 2016
Location: Mooresville NC
Posts: 2,100
|
Quote:
I've not heard of a lot of people here on the site that have taken that aggressive of a trip. I did manage to get out when at the rally last month. I did about 125 miles going up over cherohala and back. BTW....I threw a chain again. LOL I'm not sure how much more shakedown you could do for something like your problem. |
|
|
08-10-2017, 09:37 PM | #10 |
Join Date: Aug 2016
Posts: 18
|
LOL! I did over twice the miles you did in the course of two days along with several water crossings and climbed to over 11,000 feet elevation. Bike was doing great until it quit.
|
|
08-16-2017, 04:57 PM | #11 |
Join Date: Aug 2016
Posts: 18
|
Well, I replaced the ignition coil and the CDI. No joy. Any other suggestions?
|
|
08-16-2017, 05:01 PM | #12 |
Join Date: Aug 2016
Posts: 18
|
ARH. Can you point me to the magneto coil?
|
|
08-16-2017, 09:45 PM | #13 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
|
If you remove the rotor (under the left side crankcase cover), looks kinda like a brake drum, there sits the stator. One of the coils is connected to the CDI unit. The other coils are used to charge the battery, and runs the lights via the zenor diode that converts the ac to dc, so that the battery stays happy. The lights don't really care if they are running off of ac or dc. But the turn signal controller cares. Anyway, this is what used to be called a low tension magneto. In this application it sends a small amount of self-generated current up a wire to the Condenser Discharge Ignition module, which cleans up and intensifies the juice, sends it to the coil where it rises up to somewhere around 50,000 volts, and fires the plug. How does the magneto know when to send that shot of juice up to the CDI? It has its own dedicated magnet that creates the electricity at exactly the right time, around top dead center. Your problem may be a skinned wire where the wires come out of the motor on top, more or less, of the outer crankcase cover through a U shaped slot. Check those wires very carefully for rubbing on the engine, a break or a short. Unlikely to be a bad magneto coil on a new bike, much more likely to be where those wires come out of the crankcase. Other guys on here know more about these things than I do, but basically, that's how it works...ARH
|
|
08-16-2017, 10:14 PM | #14 | |
Join Date: Sep 2014
Posts: 1,913
|
I don't think you have to remove the rotor to get to the stator. The stator is usually bolted to the side cover.
Quote:
|
|
|
08-17-2017, 08:33 AM | #15 | |
Join Date: Mar 2017
Location: Twin Cities MN
Posts: 525
|
Quote:
Minor correction to this operational description regarding this sentence. The other coils are used to charge the battery, and runs the lights via the zenor diode that converts the ac to dc, so that the battery stays happy. To convert ac to dc requires a rectifier which consists of 2 diodes for a half way and 4 diodes for a full way. A zener diode on the other hand is used to clamp a voltage at a set level these diodes come in various voltage ratings. A zener can act as a regulator a very simple one. Usually a regulator uses a few more passive components. We just see the heatsinks on ours.
__________________
2016 Brozz |
|
|
|
|
|
|