best trigger for a 45 degree odd fire harley

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motionper
MegaSquirt Newbie
Posts: 16
Joined: Sat May 15, 2010 9:32 am

best trigger for a 45 degree odd fire harley

Post by motionper »

i have a 36-1 or a single tooth trigger wheel,i can run one magnetic crank sensor or two at 45 degree angles,can i run a dual input dual coil from either of these???also i would like to run single spark but can run wasted spark,any idea on the initial settings??
Matt Cramer
Super Squirter
Posts: 910
Joined: Sat Jul 03, 2004 11:35 am

Re: best trigger for a 45 degree odd fire harley

Post by Matt Cramer »

Is that a crank wheel or a cam wheel? If it's a crank wheel, you could only run wasted spark unless you add a one tooth cam wheel. A 36-1 cam wheel would allow non-wasted spark.

You would only be able to run one sensor per trigger wheel when using a missing tooth wheel. A second sensor at a 45 degree angle would provide no benefit.
Matt Cramer at DIY Autotune
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motionper
MegaSquirt Newbie
Posts: 16
Joined: Sat May 15, 2010 9:32 am

setting up a 36-1 trigger wheel on a harley odd fire

Post by motionper »

please advise,i searched the forums and i don't understand the imitial set up for advance and cylinder offset firing

i currently have a 36-1 trigger wheel with a vr sensor,the missing tooth is right before tdc number one cylinder,it is set at falling signal at tdc number one cylinder,how do i set it up from here for odd fire and 35 degrees timing???
thank you i thought i knew something about injection and ecm's before this but some of the manual i find intimidating and hard to understand i hope you will advise me thru this project i am looking forward to completing this application and will post my final sucess when completed
grippo
MegaSquirt Guru
Posts: 921
Joined: Mon Feb 16, 2004 6:55 pm

Re: best trigger for a 45 degree odd fire harley

Post by grippo »

tryskriel
MegaSquirt Newbie
Posts: 12
Joined: Sun Jun 12, 2005 2:40 pm

Re: best trigger for a 45 degree odd fire harley

Post by tryskriel »

Do you have the 30-2 factory trigger wheel like a 2009 twin cam fuel injected engine
I have a map with stock trigger wheel if you want it

Thanks
Fred
carlosfandango
MegaSquirt Newbie
Posts: 6
Joined: Sun Dec 27, 2009 6:46 am

Re: best trigger for a 45 degree odd fire harley

Post by carlosfandango »

Hi there guys - I've been searching the forums for some info on a similar setup to the one I'm planning to try and iron out some last minute issues.

I'm building a buell chopper and I'm using the MS V3 board with an MSII daughterboard. Twin coils (COP) and an original buell X1 throttle body & injectors (sequential injection). I'm probably 5 weeks away from my first start attempt.

At the moment I am planning on using a n-1 or n-2 trigger wheel on the cam only for timing, because I don't want to have to use a crank wheel, which would be awkward to say the least with the lightning engine. The usual comment "the docs seem confusing" also applies to me so I am still not certain that my plan will work; I have built a PIC-based n-x wheel simulator to try out the idea first but any encouraging prior knowledge would be a great boon!

Also, I read in this thread that there is an existing wheel for a later harley, presumably with a suitable pickup? That's also interesting because I was planning to fabricate that. If anyone could supply more details I would be grateful.

CF
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