Do you know how to use a timing disc and a mechanical stop to find top dead center (TDC)? I think Texas Slick has detailed timing instruction if you search this site.Hi.
It is my first time with magneto.
Please, could you explain me (in easy way) how set the timing with magneto.
I usualy work with the points distributor on the back.
Thank you.
Piero
Do you know how to use a timing disc and a mechanical stop to find top dead center (TDC)? I think Texas Slick has detailed timing instruction if you search this site.
Do you have the manual open in front of you?
Hi.
My Workshop manual says only how clean magneto point and to check the gap.
May be yo have not read well.
Piero
Hi Slick,
thank you so much for sending me your topic link.
Certainly is clear but sorry i am not a mother language so that was easy lost me in translation.
If i can summarize what i have understood, considering that my magneto is in place:
- starting from TDC i rotate back the engine of 35 (or 30) degree.
Then i am not sure what i have understood, not usually with magneto and translation.
Thank you.
Piero
I’d be more interested in equal timing than equal points gap .
Piero:
1) Check point gap is equal on both ramps .... this is very important! If not equal, do Steps #2 to #6
2) Find TDC (Step # 7 and #8) Step #9 does not apply to you.
3) Do Step #10 and Step #11. There is nothing special about 35 degrees .... rotate backwards past your target timing set point.
4) Do Step #12 to #17.
Se c'è qualche passo che non capisci
, PM me.
Slick
Equal point gap yields equal timing if the cam ring is spot on CNC machined.
Piero:
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In Step #13, VOM is Volt - Ohm - Meter. If you do not have one, I suggest you buy. They are not very expensive, and you will find helpful for electrical testing. If you have one, good.
Set the VOM function to "Ohms" and select maximum sensitivity .... this is the setting that usually makes "beep" sound when lead (probe) wires are touched together. Then connect probes using "alligator" clips to the places A1 (or A2), and B in the Figure under Step #6.
If you have done all the steps before Step #13, the VOM should "beep". The beep indicates the points are closed. Points should be closed if engine is backwards 35 or more degrees from TDC, and the long screw that secures the contact block is not installed.
Now slowly rotate the engine forward until the beep stops. This is the place where the points open, and the magneto fires. Make a note of this place on the degree wheel.
Next, Step #13 says repeat several times to check your work.
PM me if you need more help.
Slick
You can use a test light with a battery, if the centre screw is loosened or removed.
Or you can use a cigarette paper or similar thin piece of material, held between the points. Feel for when the points lose their grip on the paper: that is the points opening.
Yep definitely, but it’s a way to set your timing.
Whichever way it’s initially set, checking with a strobe is a good idea, if you’re interested in how the timing really behaves when the engine is running.