36-1 trigger wheel in a distributor....

Fuel Supply & Ignition Systems

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64 sunroof
Posts: 14
Joined: Wed Mar 05, 2008 3:35 am

36-1 trigger wheel in a distributor....

Post by 64 sunroof » Sun Nov 05, 2017 3:02 pm

So I have been working on a distributor for my turbo beetle project for sequential fuel and spark using a 36-1 trigger wheel to be used with my ms2 (after i upgraded my racecar with an ms3) pictures as they say speak 1000 words

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that was at crank speed and so i tested at cam speed in megasquirt

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also at cam sensor speed i was able to read 300 rpm quite happily.

my question is i was showing a racecar friend this and he was said that "It will work , but will struggle to get a perfect reading. I would say you will get 5 degrees of difference on and off throttle with the backlash of the distributor drive shaft. And another difference with the clutch pushed down as it pushes the thrust on the crank" now i thought that it would have a much smaller effect (around .5 to a degree at the cam ~ 1-2 degrees crank) at worst case i will add a crank sensor too

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Chip Birks
Posts: 2465
Joined: Wed Mar 12, 2008 7:59 pm
Location: Pleasant Grove, Utah

Re: 36-1 trigger wheel in a distributor....

Post by Chip Birks » Sun Nov 05, 2017 3:34 pm

Piledriver on here has been using this method for probably 4 years now. He hasn't had any complaints as far as i can tell. Full sequential and one sensor is nice. VW timing gearing is pretty tight. Not like its belt or chain driven. It will be just fine. Nice work!

64 sunroof
Posts: 14
Joined: Wed Mar 05, 2008 3:35 am

Re: 36-1 trigger wheel in a distributor....

Post by 64 sunroof » Sun Nov 05, 2017 3:53 pm

cheers dude that was my thought, its a long term project in between keeping my racecar running so updates will be slow( mk2 golf 550 hp runs 10.7)

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Dale M.
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Location: Just a Little Bit West Of Yosemite Valley

Re: 36-1 trigger wheel in a distributor....

Post by Dale M. » Mon Nov 06, 2017 9:44 pm

I always thought timing slop for distributors was in gearing off crankshaft and the connection (slot) between the distributor drive assembly and actual distributor...

Dale
Lives his life vicariously through his own self.
1970 "Kellison Sand Piper Roadster"

64 sunroof
Posts: 14
Joined: Wed Mar 05, 2008 3:35 am

Re: 36-1 trigger wheel in a distributor....

Post by 64 sunroof » Mon Nov 13, 2017 7:40 am

once i get it in place and running on the ms2 i will do a video of the timing when i have set the timing to static and then we should be able to see it move around or not.....

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