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Kickstarter said:
I've got this magneato and I'm not sure what it is for. I was told maybe a ARD Triumph mag?
It's definitely a single-fire mag (both plugs won't spark at the same time - no "wasted" spark")

That cover looks like an XR750 cover I have gathering dust (I've got the cover, not the $$$ mag). The extra height is for the distributor. It's got an automotive-style rotor that provides spark every 180 (or so) degrees per mag rotation.

Horizontal XR750 mags are pretty rare, which is the only thing causing me to second guess my guess. Regardless, I vote for horizontal (goes in what would be the generator hole on a Sportster or K) mount XR single-fire mag.

Here's a drawing of a dual fire, horizontal mount Fairbanks mag for a KR or XLR racer. I believe (someone please correct me if I'm talking out my ass) the single-fire mags only came on XR750s. The rest of the mag is common between the later KR, XLR, and XR. It's worth some cash if I'm right.

 

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If it is triumph, would you be willing to part with it?
 

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Kickstarter said:
I've got a Hunt mag on two of my Triumphs and this one is different. The inside is different and the shaft coming out the bottom is different than my mag for the 650. Here are a couple more pics.
that`s because that is actually a single cylinder model.....the cam is different too.......only has one lobe instead of two on the rotor shaft....the coil is a single cylinder model also.....as is the cap....the hex drive shaft is not present either..that one is tapered.....you would have to gut the whole thing and start over from scratch to use it on a Twin cylinder.....the peices individually would cost more than a whole mag bought outright

it`d be good for a single cylinder model Brit if somebody happens to want one
 

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Slim said:
that`s because that is actually a single cylinder model.....the cam is different too.......only has one lobe instead of two on the rotor shaft....the coil is a single cylinder model also.....as is the cap....the hex drive shaft is not present either..that one is tapered.....you would have to gut the whole thing and start over from scratch to use it on a Twin cylinder.....the peices individually would cost more than a whole mag bought outright

it`d be good for a single cylinder model Brit if somebody happens to want one
SCRATCH THAT........my bad.....I had to look at the pics more carefully......that funny dealy on top of the rotor shaft above the points is a rotor (like a car distibutor).......I was right about the coil being a single fire but then I saw that rotor and the two contact points inside the distributor cap.......it should fit a dual cylinder just fine........if your looking for the parts try a Fairbanks Morse magneto parts distributor.......Hunts are copies of Fairbanks Morse......most the parts will interchanange like coils,points,point plates,condensors......the rotor shafts in a Faibanks Morse are pressed in and can`t be easily removed ........for all the info on that you need,call on Buck at Goblin Millworx.....he`s the cat`s ass when it comes to those
 

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see.....most the Hunts for Triumph had a dual pole/contact coil instead of the single one like you got.......and the contacts for the distibutor cap came straight off those coil poles (springs) instead of off the rotor shaft....that one has more parts than necesary........check the rotor shaft where the points contact it..............if it has two lobes 180 degrees out,you should be able to do away with the tiny rotor thingy on top of the rotor shaft and swap the coil to a dual pole......change the cap.......then it`s just like your other Hunts
 

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Sporticus said:
It's definitely a single-fire mag (both plugs won't spark at the same time - no "wasted" spark")

That cover looks like an XR750 cover I have gathering dust (I've got the cover, not the $$$ mag). The extra height is for the distributor. It's got an automotive-style rotor that provides spark every 180 (or so) degrees per mag rotation.

Horizontal XR750 mags are pretty rare, which is the only thing causing me to second guess my guess. Regardless, I vote for horizontal (goes in what would be the generator hole on a Sportster or K) mount XR single-fire mag.

Here's a drawing of a dual fire, horizontal mount Fairbanks mag for a KR or XLR racer. I believe (someone please correct me if I'm talking out my ass) the single-fire mags only came on XR750s. The rest of the mag is common between the later KR, XLR, and XR. It's worth some cash if I'm right.

yer absolutely right.........and I really should read ALL the posts before I reply to the last one first.....I just echoed just about everything you said
 

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two great things about that mag Kickstart,is the way the wires are routed off the cap......not straight out into your way if you side mount it........and the distributor single fire style makes a little stronger spark as none is wasted like in a dual fire where both poles fire at the same time and at every stroke.....Intake and exhaust
 

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Kickstarter said:
I've got a Hunt mag on two of my Triumphs and this one is different. The inside is different and the shaft coming out the bottom is different than my mag for the 650. Here are a couple more pics.
That's definitely an XR750 cap, and my money's on the rest of it being XR750. Wanna sell it cheap? I don't have an XR750 kicking around, but I'll find a good use for it.

Those two rotor contact points look to be 180 degrees apart. Sometime once told me that Sportsters fire not-exactly-180-degrees-apart. Either my internal protractor is wrong, or XR750s fire slightly differently from Sportsters.
 
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