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Timing drift issue
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10sec_rx7



Joined: 27 Feb 2005
Posts: 459
Location: Sydney Australia

PostPosted: Sun Jul 31, 2016 9:08 pm    Post subject: Reply with quote

ive used factory LS stuff with 60-2 to 9000rpm with out issues as well on the Haltech elite and over 2000hp as well.., but that's not whats fitted to this no doubt made in china piece of equipment..
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Adam



Joined: 02 Dec 2011
Posts: 57

PostPosted: Mon Aug 01, 2016 3:54 pm    Post subject: Reply with quote

Quote:
24 teeth and hall effect could be a issue, most hall sensors are not fast enough to work correctly, all the 24/1 setups I have done use magnetic sensors,

I would remove 16 teeth and turn it in to a 8/1 setup



I think the AEM EPM uses optical sensors. These are pretty well used devices in the Honda world without much reports of issues. I don't know if the "chopper wheel" is keyed on to the shaft though so that's something he should check. A pic of inside is here:
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10sec_rx7



Joined: 27 Feb 2005
Posts: 459
Location: Sydney Australia

PostPosted: Mon Aug 01, 2016 5:36 pm    Post subject: Reply with quote

thanks for the pic,

optical is a different ball game,

looking at the wheel they have a longer slot for the home window, this could cause issues if you have both edges on for example falling,

you will need to have one edge on rising and the other on falling,
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Adam



Joined: 02 Dec 2011
Posts: 57

PostPosted: Wed Aug 03, 2016 10:48 pm    Post subject: Reply with quote

Quote:
thanks for the pic,

optical is a different ball game,

looking at the wheel they have a longer slot for the home window, this could cause issues if you have both edges on for example falling,

you will need to have one edge on rising and the other on falling


There might be a common slot but did you notice there are 2 pickups separated by some angle. When scoped the home tooth is roughly half way between two ref teeth no matter which edge you use.
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10sec_rx7



Joined: 27 Feb 2005
Posts: 459
Location: Sydney Australia

PostPosted: Fri Aug 05, 2016 3:13 am    Post subject: Reply with quote

i didnt look at the pic that close i assumed the angle of the pickups was evenly spaced,

if it falls directly in the middle then its perfect and should give zero issues
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