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jaffa90 |
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jaffa90 World Chat Champion
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stinkwheel |
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stinkwheel Bovine Proctologist
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Posted: 08:43 - 29 Nov 2022 Post subject: |
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Assuming it's a hall effect sensor.. Um depends which way round the sensor is wired in but that's probably an irrelevant layer of subtlety for a strimmer.
On a strimmer, in the absence of any markings to the contrary, I'd take the timing point to be when the trigger magnet is halfway along the sensor, there's often a line on the sensor. Sometimes also some markings on the rotor in which case I'd go by them.
In a more complex way of looking at it, if the trigger hits the positive leg of the sensor first, it's just after the rising edge passes. If the trigger hits the earth leg of the sensor first, it's just after the falling edge passes. If you have opposite poled magnets at 180 degrees, it could do it one way on one and the other way on the other.... So yeah, middle would be my vote.
If you've got it set and it's latchy to start and pinking at higher revs with a white or nibbles plug electrode, retard it slightly. If it's easy to start but down on power with a dark coloured electrode, advance it slightly.
I'm surprised you're able to adjust it. I'd have expected it all to be keyed in place ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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jaffa90 |
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jaffa90 World Chat Champion
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A100man |
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A100man World Chat Champion
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stinkwheel |
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stinkwheel Bovine Proctologist
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Posted: 14:01 - 29 Nov 2022 Post subject: |
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Equally, if everything is fixed in place in factory positions with no adjustment possible and you're considering altering the keyway position, you're probably barking up the wrong tree. Unless the timing shaft has spun in the crank?
WDforte may be along soon, he has a very good understanding of the intricacies of electronig ignitions. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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jaffa90 |
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jaffa90 World Chat Champion
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jaffa90 |
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jaffa90 World Chat Champion
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WD Forte |
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WD Forte World Chat Champion
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jaffa90 |
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jaffa90 World Chat Champion
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WD Forte |
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WD Forte World Chat Champion
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 20:14 - 29 Nov 2022 Post subject: |
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Yeah, that's not what I thought it was. A hall effect sensor is about 2x2cm.
I wonder if those two rectangular holes are significant and trigger the breakdown? I think the only way to be sure of the timing point there is with a strobe. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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jaffa90 |
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jaffa90 World Chat Champion
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Posted: 01:58 - 30 Nov 2022 Post subject: |
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""That appears to be just simple electromagnetic system""
I agree,
"""I wonder if those two rectangular holes are significant and trigger the breakdown?""""
These are open cooling fins in between the magnets and dummy weights on the opposite side for balance.
I have managed with patience to position the magnets in the middle of the coil legs at T.D.C.
As far as manufacturers quality look on ebay daily deals for tons of refurbished items. |
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WD Forte |
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WD Forte World Chat Champion
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jaffa90 |
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jaffa90 World Chat Champion
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stinkwheel |
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stinkwheel Bovine Proctologist
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jaffa90 |
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jaffa90 World Chat Champion
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Old Thread Alert!
The last post was made 1 year, 146 days ago. Instead of replying here, would creating a new thread be more useful? |
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