I suspect this has been asked before, but I couldn't think of the right search terms.
I didn't see it in the MegaManual, but I could have missed it.
Has anyone run spark with only one pulse per crank revolution rather than a multi-toothed wheel?
I assume MS will work with only one tooth.
I suspect the spark advance won't be as accurate as a 32 tooth wheel, but how bad is it?
My bike has a single "tooth" pickup and the stock CDI uses that for spark and advance.
My guess is that it won't be any worse that stock, which is good thing.
Practical experience with this setup would be greatly appreciated.
Single tooth ignition
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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msiddalingaiah
- Helpful Squirter
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Single tooth ignition
Madhu
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power
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Captain Midnight
- MegaSquirt Newbie
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- Joined: Thu Jan 05, 2006 11:24 pm
Re: Single tooth ignition
Yes, it will work fine.
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Bernard Fife
- Master Squirter
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- Joined: Thu Oct 29, 2009 12:54 pm
Re: Single tooth ignition
m,
MegaSquirt requires at least one 'tach signal' per ignition event. The tach signal can be a a crank wheel tooth, spike from a coil, etc.
So for a 4 cylinder, 4-stroke engine, that's two tach signals per crank revolution. For an eight cylinder, you need 4. For a two cylinder, you only need one.
Lance.
MegaSquirt requires at least one 'tach signal' per ignition event. The tach signal can be a a crank wheel tooth, spike from a coil, etc.
So for a 4 cylinder, 4-stroke engine, that's two tach signals per crank revolution. For an eight cylinder, you need 4. For a two cylinder, you only need one.
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
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msiddalingaiah
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Re: Single tooth ignition
Is there a significant advantage with a multi-tooth wheel?
Madhu
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power
1990 Suzuki DR350S EFI Conversion
Returnless, adjustable electronic Fuel Pump Controller requires less power
-
Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Single tooth ignition
It's able to update engine position data more often, making it more accurate if the engine RPM changes abruptly.msiddalingaiah wrote:Is there a significant advantage with a multi-tooth wheel?
