The MegaSquirt Project has experienced explosive growth other the years, with hundreds of new MS installations occurring every week - a phenomenal success! MegaSquirt has been successfully used in all aspects of Internal Combustion engine applications including R&D, Industry, Race, and Research. The MS project has transformed itself from a simple R&D project into a full-featured mature engine control system. To reflect this the support structure has also changed to meet the needs of MegaSquirt Users.
Moving forward, the R&D forums for MegaSquirt project are in a read-only mode - no new forum posts are accepted.
However the forums will remain available for view, they still contain a wealth of information on how MegaSquirt works, how it is installed and used. Feel free to search the forums for information, facts, and overview.While the R&D forum traffic has slowed in recent years, this is not at all a reflection of Megasquirt users, which continue to grow year after year. What has changed is that the method of MegaSquirt support today has rapidly moved to Facebook, this is where the vast majority of interaction is happening now. For those not on Facebook the msextra forums is another place for product support. Finally, for product selection assistance, all of the MegaSquirt vendors are there to help you select a system, along with all of the required pieces to make it complete.
Forum for discussing how to install MicroSquirt(TM), choose and troubleshoot sensors, wiring, and communications for MicroSquirt (TM) and MicroSquirt Module(TM).
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
The crank drives the alternator directly, so the degree wheel would mount on the face of the Alternator rotor and the sensor would be on the face of the alternator housing.
I would like to run a 36-2 wheel.
I am worried about the RF interference from the Alternator. How do you deal with this? Should I use Hall or VR?
I think you need to speak to Lorne aka R100RT, but it looks like you can fit something using the centre bolt on the slip ring. I don't know if the alternator noise would affect things, but if you are using the newer v3 MicroSquirt, I would think the discriminatory circuits would work ok.
24c wrote:I think you need to speak to Lorne aka R100RT, but it looks like you can fit something using the centre bolt on the slip ring. I don't know if the alternator noise would affect things, but if you are using the newer v3 MicroSquirt, I would think the discriminatory circuits would work ok.
I don't know how much clearance you have between the alternator cover and the slip ring, but underneath you have the ignition box. This looks a little too small, but maybe you could get a simple wheel inside here, although it would be rotating at cam speed IIRC.
les_garten wrote:...Do you tell them what type of wheel you want and they make you one?
I thought that engine pic was too clean! Anyway, if you want a trigger, you can get them laser cut, no problem, but you need to find a sensor first that you can mount in position, and this will determine the size of the teeth etc.
Nice pic of the igniTech, just what I was thinking re mounting on the slip ring.
les_garten wrote:...Do you tell them what type of wheel you want and they make you one?
I thought that engine pic was too clean! Anyway, if you want a trigger, you can get them laser cut, no problem, but you need to find a sensor first that you can mount in position, and this will determine the size of the teeth etc.
Nice pic of the igniTech, just what I was thinking re mounting on the slip ring.
Do you think you need any extra shielding measures?
Clearance to the stock cover is not much, probably in the range of 1/2" to 3/4", but if that simple set up with single tooth wheel works I'd be tempted to design your wheel along that basis.
Not sure if your proposed alternator upgrade had the permanent magnet style rotor, if so you might want to post that image for all to see, although I guess magnetic fields are magnetic fields regardless how their developed.
Regarding slippage, a wheel like that is so small that mass will be minimal and the puckering force developed by the retaining bolt (longer than stock for that) to the rotor center would probably keep it pretty well nailed in place.
Or, you could sandwich a waffle washer, or star washer between those surfaces to create some bite to ensure no movement develops.
You could be close to a solution there.
. No offense 
!
