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| Lucas S.R. Impulse Starting Magneto- ... |
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Message |
    
Hans Poutsma
Advanced Member
Username: hansp77
Post Number: 48
Registered: 04-2006
| | Posted on Monday, June 22, 2009 - 04:09 am: | 
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Hello again,
a few questions.
A while ago I bought a pile of P55 parts, about 1-2 engines and numerous bits and pieces.
I had plans for using some of it for top end rebuild/swap on the P55 in my boat, but having waited many many months already trying to get some parts from M.M., I have decided on another strategy to see if that solves my problems. I won't go into the details of all that yet, but one of the things I want to try is swapping on another, newer (I hope) magneto.
I have been playing with what I think is a impulse starting magneto, and attempting to figure out how to set the timing on the thing.
Right now, with the gap at 0.015 inch, it is giving good sparks just by turning it by hand, so I am hoping it is in reasonably good order.
here is the maggy
here is under the sprung coupling plate thing,
there are three screws like the one visable on the bottom there- there seems to be capacity to set this in different places- is this for the timing?
digging through the spare parts I found what appears to be the other end of the coupling. If this is so, then it would appear that it is fixed simply by some sort of bolt and nut- and could be fixed in any position... is this where I set the timing?
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Hans Poutsma
Advanced Member
Username: hansp77
Post Number: 49
Registered: 04-2006
| | Posted on Monday, June 22, 2009 - 04:11 am: |
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here is the other end
Should the plugs/sparks be set at 180 degrees from each other? These are set 90 degrees, and the possible position for 180 degrees has the brass bit there, but no hole drilled for the leads.
the high tension leads are going to 10:30 oclock and 1:30 oclock
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Hans Poutsma
Advanced Member
Username: hansp77
Post Number: 50
Registered: 04-2006
| | Posted on Monday, June 22, 2009 - 04:11 am: |
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here you can see where the 3rd option could go, but hasn't yet
so, any opinions on what I have here, and how to set it up?
I am hoping that I can easily fit this to my P55m, replacing the current magneto it has on it, without too many drama's.
I am not too sure how far to dig into this thing to clean it up, it doesn't look that bad, and I don't want to stuff it up. I was just planning on filing the points, setting the gap, and then the timing (so long as I can fit it to the engine) and seeing if this improves the starting and running of my engine.
(other small aspect I am going to do is to remove the exhaust port, and see if it is anywhere near as clogged up as a couple of the ones in my spares were- hopefully that might help as well).
Cheers,
Hans. |
Hans Poutsma
Senior Member
Username: hansp77
Post Number: 51
Registered: 04-2006
| | Posted on Monday, June 22, 2009 - 04:17 am: |
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and I should add, I have read the manual where it deals with this, but it hasn't exactly helped me too much
I am not sure what these dowels are supposed to be. |
David Myers
Senior Member
Username: dave_myers
Post Number: 70
Registered: 11-2006
| | Posted on Monday, June 22, 2009 - 05:31 am: |
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Hi Hans,
The plug leads in the cap are ok. If you examine the 90 deg terminal, there is an internal link to the 180 degree terminal so that is ok.
Some couplings have 2 off-set dowels where yours has an off-set bar so will still work as intended.
The coupling nut they refer to is on the maggy drive on the motor. You will see a slotted screw head inside the coupling and it retains the drive dog to drive the maggy. If needed, slacken the screw about 1 turn and give the drive dog a slight tap and you can then rotate it if needed.
Follow the rest of the instructions as above in your posting.
You may however be lucky enough for it all to fit straight up with no adjustments required. It was probably set for a P55 in another life...
Cheers,
Dave |
Hans Poutsma
Senior Member
Username: hansp77
Post Number: 52
Registered: 04-2006
| | Posted on Monday, June 22, 2009 - 06:07 am: |
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thanks Dave, very helpful.
Just in general, any opinion on whether these impulse starting magneto's are really any better? My guess is that it would help with hand cranking, but might not be all that different with my dynastart?
and does it look like I have all the parts needed to swap it over? It is likely that whatever other things I might need, I have somewhere in the pile of parts, just don't know what they might be...
cheers,
Hans. |
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