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  #41  
Old 08-13-2017, 10:14 PM
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Quote:
Originally Posted by Chkaharyer99 View Post
Is the the shaft, two bearings, and wheel, depicted and described for 4 cylinder trigger/pickup, a custom fabricated part or is that something that a part that can be procured through AC parts sources and then be modified to work?
Homebuilt; a re-machined Bendix mag shaft, two sealed bearings, a 36T catalog gear, and a locating collar.

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  #42  
Old 08-14-2017, 09:18 AM
Chkaharyer99 Chkaharyer99 is offline
 
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Thank you Dan. I searched extensively for that part. Came up with nada.

Your part is very nicely done. It somewhat resembles a B&C SD 8 Alternator. I wonder what those look like under the bell cover. Seems like it (B&C alt) could do double duty and do the crank position sensor job aside from generating electrons.
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  #43  
Old 08-14-2017, 10:13 AM
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Same concept (magnetic reluctor) as Electroair, which uses a 60 tooth wheel. This one is for Ford EDIS control, 36 tooth, different electronics. A flying magnet with a Hall effect pickup is more common today, more accurate (square wave ON-OFF if IIRC), not that the difference matters at only 2700 RPM. Either type would be fundamentally the same in terms of machining.

Reliability is in the details, both mechanical and electrical. For example, the Amphenol AT/Deutsch DT wire connectors are not cheap, but the whole system depends on them. Connectors deserve as much attention as the triggers and computers. The homebuilt community often does a poor job with electrical details. I suspect self-inflicted failure is the largest risk in a swap to EI.

Quote:
Originally Posted by Chkaharyer99 View Post
It somewhat resembles a B&C SD 8 Alternator. I wonder what those look like under the bell cover. Seems like it (B&C alt) could do double duty and do the crank position sensor job aside from generating electrons.
Wire coils on ferrous cores. The bell is a flying magnet. There are plenty of ignitions which combine the generator and ignition functions with a similar layout, Rotax for example. The vacuum pump/SD8 drive pad is 1.3:1 ratio, while the mag drive is 1:1, so the generator part would need to be re-engineered a bit to produce suitable output at a lower RPM.
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Last edited by DanH : 08-14-2017 at 10:24 AM.
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  #44  
Old 08-14-2017, 04:30 PM
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Default Cable Armoring



You can see two of the four 10-32 threaded holes for mounting cable armoring on our 3.5 inch Hall sensor mount here
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