Wanted Wypac white CDI units Mk3

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Charles uk
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Wanted Wypac white CDI units Mk3

Post by Charles uk » Sat Mar 30, 2019 10:46 am

Help

I'm looking for dead or dying Wypac Mk3 white CDI units small reward paid.

Just email me

thanks Charles.
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cookie1
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Re: Wanted Wypac white CDI units Mk3

Post by cookie1 » Sat Mar 30, 2019 8:56 pm

What models would you find these on Charles ?

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Charles uk
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Re: Wanted Wypac white CDI units Mk3

Post by Charles uk » Sun Mar 31, 2019 12:52 am

Difficult to generalize as some have been repaired/replaced , Model 45 EFS, Model 55 EFPC, Model 75 ESC, Model 80 ESPC. Model 90 EFNR, early 170, early SD110 & SD160.

All have smooth CDI flywheels.
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Re: Wanted Wypac white CDI units Mk3

Post by Collector Inspector » Sun Mar 31, 2019 10:29 am

Charles uk wrote:Help

I'm looking for dead or dying Wypac Mk3 white CDI units small reward paid.

Just email me

thanks Charles.

OK Charles............why would you want them?

Very old tech by now.............

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Charles uk
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Re: Wanted Wypac white CDI units Mk3

Post by Charles uk » Sun Mar 31, 2019 11:01 am

Just playing & researching Bruce.
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Re: Wanted Wypac white CDI units Mk3

Post by Collector Inspector » Mon Apr 01, 2019 3:40 pm

Makes Perfect sense!

Always a good thing.........what are you tinkering with?

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Charles uk
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Re: Wanted Wypac white CDI units Mk3

Post by Charles uk » Tue Apr 02, 2019 2:26 pm

I'm playing with top secret racing stuff at the moment Bruce & if I told you anything I'd have to shoot you!

But here's an example of some of the previous decades tinkering.
IMG_9024.jpg
IMG_9025.jpg
Here's a variable timing ignition built using a Wypac Mk3 that I've since robbed the coil off for another use.

You will see that the ignition module is built so that it can rotate on the base plate & it's moved by rotating the knob held in position by 3 cap head screws, 1 rotation of which will advance or retard the timing by 1 degree (the knob is weighted heavy on one side so it doesn't rotate in use due to vibration) the timing can then be adjusted under load on the boat or on a dyno to establish the best firing point anywhere in the rev range.
IMG_9028.jpg
IMG_9026.jpg
The firing point can then be measured using a no dwell strobe & a 12 volt battery, this way you can establish the timing curve for all your Wypac CDI ignitions, Wypac CDI's all have an inbuilt timing advance that advances as the revs rise, & they're all a little bit different.

You have to print your own degree labels 10 degrees is exactly 1/36th of your flywheels circumference & your TDC mark has to be accurate to within 1 degree or all your readings mean nothing.
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Charles uk
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Re: Wanted Wypac white CDI units Mk3

Post by Charles uk » Wed Apr 03, 2019 6:41 am

Now your sorry you asked!
Make it idiot proof and someone will make a better idiot.

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Re: Wanted Wypac white CDI units Mk3

Post by Nudge » Wed Apr 03, 2019 9:56 am

Now your sorry you asked!
I'm not!
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Re: Wanted Wypac white CDI units Mk3

Post by Collector Inspector » Thu Apr 04, 2019 11:13 am

Nudge wrote:
Now your sorry you asked!
I'm not!

8)

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Re: Wanted Wypac white CDI units Mk3

Post by Collector Inspector » Thu Apr 04, 2019 11:14 am

Charles uk wrote:Now your sorry you asked!

Now you are going to shoot me..........worthy death aye.

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Re: Wanted Wypac white CDI units Mk3

Post by Charles uk » Thu Apr 04, 2019 11:26 am

No you've got a stay of execution, that sort of experimentation is not uncommon among the racing fraternity.
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Re: Wanted Wypac white CDI units Mk3

Post by Collector Inspector » Thu Apr 04, 2019 11:57 am

YAY!

Now that my future is ongoing (from this........no idea about the rest of my lifestyle) I shall revisit same thing but using push/pull cable arrangement with indexed limits via thumb lever.

The position is maintained via a flat wound torsion spring.......albeit a rather large one too stabilise the position (any selected) of the base plate.

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