8 replies to this topic

[classicoop]

Are the things circled directly connected? (Electronic Distributor)

 

If yes, how does advance work? Weights move the prongs basically make the ignition module give the pulse earlier for the spark? So the advance is limited to the width to metal strip of the rotor arm?

 

If no, how can I unstuck mine, the rotor arm doesn't move as much as the internal mechanism (springs and weights move freely).

 

 

 

[elanbaby]

Are the things circled directly connected? (Electronic Distributor)

 

If yes, how does advance work? Weights move the prongs basically make the ignition module give the pulse earlier for the spark? So the advance is limited to the width to metal strip of the rotor arm?

 

If no, how can I unstuck mine, the rotor arm doesn't move as much as the internal mechanism (springs and weights move freely).

 

 

 

No, the input shaft and the shaft where the finger sits are not directly connected. The advance mechanisms (mech/ vac) do advance the output shaft in relation to the input/drive side. 

 

Remove the 3 small hexagonal screws and look inside.

 

Interesting to read here: http://www.gofastfor...ion/advance.htm

Edited by elanbaby, 25 May 2013 - 02:05 PM.

[classicoop]

 

Are the things circled directly connected? (Electronic Distributor)

 

If yes, how does advance work? Weights move the prongs basically make the ignition module give the pulse earlier for the spark? So the advance is limited to the width to metal strip of the rotor arm?

 

If no, how can I unstuck mine, the rotor arm doesn't move as much as the internal mechanism (springs and weights move freely).

 

 

 

 

No, the input shaft and the shaft where the finger sits are not directly connected. The advance mechanisms (mech/ vac) do advance the output shaft in relation to the input/drive side. 

 

Remove the 3 small hexagonal screws and look inside.

 

Interesting to read here: http://www.gofastfor...ion/advance.htm

 

 

Oh crap. Guess I found the root of my problem. You do mean the rotor arm should move together with the advance mechanism? Diligaf did mention the arm should move around 20deg (or some deg).

 

The output shaft (rotor arm?) is solid and will not turn. The internals are clean no rust or gunk.

 

The 4 prongs move freely with the weights and springs. The vacuum prongs also move freely and holds fine as long as vacuum hole is covered.

 

Is this a common thing? Do I need to remove the prongs/springs/weights to see?

[classicoop]

Not sure, but mine feels like it connected directly. (ignore the white stuff, that's lithium grease)

 

 

 

Edit: changed to Youtube, couldn't embed Photobucket vid.

Edited by classicoop, 25 May 2013 - 04:34 PM.

[classicoop]

No, the input shaft and the shaft where the finger sits are not directly connected. The advance mechanisms (mech/ vac) do advance the output shaft in relation to the input/drive side. 

 

 

I just saw the Moss video (), they had a points type and the rotor and input aren't connected. Is this what your talking about?

 

Mine (electronic I think it's called from a 91 Mainstream) looks entirely different. Is mine just stuck?

[ACDodd]

The 65DM4 leccy dizzy is a solid shaft type. the Advance is achieved by moving the hall effect pins in relation to the fixed pins in the top of the dizzy. I works differently to the older 59D4 45D4 and 25D dizzies.

 

AC

[classicoop]

The 65DM4 leccy dizzy is a solid shaft type. the Advance is achieved by moving the hall effect pins in relation to the fixed pins in the top of the dizzy. I works differently to the older 59D4 45D4 and 25D dizzies.

 

AC

 

 

Ahhhh thanks. I thought I was losing my mind. So the advance is really limited to the width of the brass strip on the the rotor arm (that doesn't seem like much though).

 

And is my ignition timing set correctly? According to Haynes 5+1 @ 1500rpm or is this to little?

 

Mines a 91 Hif44 1275 = (v) Mini Saloon and variants, 1275 cc, 1990 on (electronic ignition) =(v) 5º + 1º BTDC at 1500 rpm

[ACDodd]

If yours is a sprite engine then yes the advance is correct as the dizzy has an advance curve that is way too long for fast road use. Much better engine performance can be had by modifying the curve. Do not advance the stock setting as engine damage can result do to considerable over advance that is possible with the sprite dizzy.

Ac

[classicoop]

It's a 91 Mainstream Hif44 Electronic Dizzy. Thanks again =)