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Post by islanddave on Feb 27, 2011 17:34:44 GMT -5
Hello, Flipping through a copy of Walnecks today revealed that Morris Magneto has introduced a magneto setup for the xs 650! It retails for about $750 though. So right there my interest fades. Those with deep wallets try it out and let us know what you think! Actually here it is here: www.morrismagneto.com/yxs.htmI think I will stick with my Boyer. Thanks Dave |
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Post by xsleo on Feb 27, 2011 18:05:07 GMT -5
Kinda cool option, cost is more than I like. There have been question about putting a mag on the XS650, now I'll know what to tell them.
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Post by Burns on Feb 27, 2011 19:44:05 GMT -5
that's sparks only of course. Also, I wonder if it will clear the fins on the 70 big fin kig - I doubt it.
I'm thinkin' about that German unit. power dynamo or something like that. About 300 plus shipping if I did the Euro to Dollar conversion correctly.
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Post by Burns on Feb 27, 2011 19:45:07 GMT -5
hmmm .. that's suppose to be "750 big fin kit"
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Post by xsleo on Feb 27, 2011 20:58:56 GMT -5
From looking at the pics the cylinder fins shouldn't be a problem. It looks to set just above the spark plug. If any fins are in the way it would be the fins on the head.
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Post by ShakerNorm on Feb 27, 2011 22:03:05 GMT -5
Cool! Pricey but cool! I agree with Dave - I'll be sticking with my Boyer.
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Post by islanddave on Feb 27, 2011 22:19:19 GMT -5
Now how would the spark advance? Would it use a mechanical advance as well? I guess it would. I wonder if it retains the stock one, as it mentions nothing in the write up?
Dave
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Post by ShakerNorm on Feb 27, 2011 22:39:36 GMT -5
Mags usually use a mechanical advance - at least aircraft ones do..... And those ones are a bugger to time right when you have 2 separate mags firing 2 separate spark plugs in the same cylinder - and they HAVE to fire at the same instant..... But just timing one should be a breeze.
Oh yeah - if you have one - DON'T touch a bare plug wire if it's turning - even if you're just turning it by hand - Magnetos put out LOTS of voltage and they HURT when they zap you..... enough to make an NFL Linebacker scream like a little girl..... (yup - I have real-time experience on that one....... LOL)
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Post by Burns on Feb 28, 2011 14:06:04 GMT -5
I wondered about that advance issue too. The ad calls the mag "fixed timing" or something like that.
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Post by xsleo on Feb 28, 2011 17:03:25 GMT -5
In the pics it shows the of side and it looks to have some sort of advancer in there. Another thing about mags is the faster they spin the hotter the spark. Most ignitions get weaker as the rpms go up.
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Post by ShakerNorm on Feb 28, 2011 19:49:31 GMT -5
Leo - even at hand-spun speeds, most mags are REALLY hot (oh yeah - it hurts BAAAAD) ...... and you're right - they just get more powerful as speed increases. That's why race cars use them.
Planes use them because you never have to worry about your battery or charging system failing and your sparks stopping, because it's all self-contained. And at 12,000 feet - you can't just pull over to the side of the airway and call AAA.........
Good reasons to use it - if you're in one of those categories........
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Post by Burns on Feb 28, 2011 20:07:25 GMT -5
correct me if I'm mistaken, but I believe mag-fired piston-engined airplanes carry TWO mags. One is a back-up. Maybe that's just the single engined ones - not sure about that.
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Post by pamcopete on Mar 1, 2011 6:59:04 GMT -5
burns,
Piston powered planes do have two mags per engine, but the second one is not a spare, it runs full time and contributes to the efficiency and power of the engine as it fires on the opposite side of the head to produce two initial kernels of flame. There is quite a loss of power if you lose a mag and you have to enrichen the mixture to keep the temps where they should be.
I flew twin engines piston powered airplanes for 20 years and only had one mag failure, and that was on the ground during run up. So, that's 2 engines, 4 mags, 12 cylinders and 24 spark plugs over 20 years for just one failure. Mags are crude but dependable if maintained properly. Their main advantage is safety. You can have a complete electrical failure and the engines keep running, which is important in an airplane because you can't just pull over on the side of the road to fix the problem.
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Post by Burns on Mar 1, 2011 19:16:22 GMT -5
That's enlightening. There is redundancy but it is not passive. Some spark is better than no spark, as your parking observation underlines.
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Post by ShakerNorm on Mar 1, 2011 22:36:41 GMT -5
Yup - a loss of power is LOTS better than a complete engine failure..... but timing them together can be a b*tch....... (might explain why I work on turbines......)
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