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A50/A65 Magneto #28442
08/20/07 3:26 pm
08/20/07 3:26 pm
Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
BSACafe Offline OP
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BSACafe  Offline OP
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Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
Hey there,
I'm looking into getting a magneto for my 69 Royal Star and I've seen a couple different versions out there. So far I've seen the Joe Hunt, which comes with the new side cover and the magneto, and I've seen the ARD which is compact and less expensive.

Is there anyone on the board that is running either a Joe Hunt or the ARD? If so, what are your impressions. Also, are there other magnetos that I should consider?

I'm also looking to find the best place to buy. British Cycle has both products, Rabbers has the ARD and British Only has the Joe Hunt. Do you know of any other place that sells them? I'm looking for the best price...

Thanks all....


Jer

http://www.caferacer.ca

1968 BSA Lightning Cafe
1968 BSA Thunderbolt
1969 BSA Royal Star
1972 BSA Thunderbolt
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Re: A50/A65 Magneto #28443
08/20/07 3:38 pm
08/20/07 3:38 pm
Joined: Jul 2001
Posts: 12,324
Central Virginia
Lannis Online content

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Lannis  Online Content

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Joined: Jul 2001
Posts: 12,324
Central Virginia
I used to run a Joe Hunt magneto on a Triumph Tiger. Took the points out, bolted the magneto to the side of the engine, timed it, and ran it like that for some time.

If you don't mind my asking, why do you want one? I wanted one because I thought it would be sort of cool, and simplify wiring and tuning the bike.

After having it on my bike for a year or so, my impression is:

1) They're expensive
2) The Joe Hunt runs at full advance all the time so watch your leg
3) They're heavy, add weight to the side of the bike
4) They're exposed to weather and damage
5) Your bike won't do one single thing with the mag that it won't do with a Boyer ignition; matter of fact, it'll run better with the Boyer because it'll advance and retard the spark.

The "coolness" factor is there, but doesn't make up for lost rideability and additional complexity, in my opinion anyhow.

So that's my response to the middle part of your question ....

Lannis


I'm like super lazy today. It's like normal lazy, but I'm wearing a cape.
Re: A50/A65 Magneto #28444
08/20/07 4:04 pm
08/20/07 4:04 pm
Joined: Sep 2002
Posts: 7,812
Seattle
Alex Offline

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Alex  Offline

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Posts: 7,812
Seattle
I agree with Lannis. Unless you're racing, there's no point.


A smattering:
'53 Gold Flash
'67 Royal Star
'71 Rickman Metisse
'40 Silver Star
'37 Rudge Special
sixtyseventy Lightboltrocket road racer...and many more.
Re: A50/A65 Magneto #28445
08/20/07 4:25 pm
08/20/07 4:25 pm
Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
BSACafe Offline OP
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BSACafe  Offline OP
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Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
Excellent points Lannis. I'm builing a chopper and the reasons that I'm considering it is because I'm going to be running a batteryless ignition. I know, I know...reduced reliability and I'm asking for problems. The magneto would simplify the wiring, and keep me out of trouble with spark. At least I think it would....

Another option is running one of Adam's Angelo EI systems without a battery...simply because it's so compact, and I could test it with a capacitor type of ignition.

My ultimate goal is to have a simple and compact ignition that is reliable. I can go pretty much any route since I've got both the stock points and a Boyer ready to wire up. I'm definitely open to suggestions...

What about thoughts on the Sparx zener/rectifier replacement with internal capacitor, a dual lead coil and Adam's Angelo EI? I'd be asking this in theory, since I believe there is only one running today.


Jer

http://www.caferacer.ca

1968 BSA Lightning Cafe
1968 BSA Thunderbolt
1969 BSA Royal Star
1972 BSA Thunderbolt
Re: A50/A65 Magneto #28446
08/20/07 4:51 pm
08/20/07 4:51 pm
Joined: Jul 2001
Posts: 12,324
Central Virginia
Lannis Online content

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Lannis  Online Content

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Posts: 12,324
Central Virginia
If you want clean and simple and batteryless, I'd go with the last option - stock alternator (it's already hidden and only has two wires, can't get much simpler than that), Sparx rectifier/regulator with capacitor for batteryless running (easy to hide), clean, simple dual-lead coil, and the Angelo EI. You could hide all that stuff and no one would know you even had any electronics or ignition on the bike. You gotta have an alternator anyway to run the lights, so let it run the ignition too; Adam's Angelo EI is about the size of three old-fashioned silver dollars stacked together, and it goes under the timing cover, no other "box" needed.

A Joe Hunt is good for continuous wide-open running, or for the "cool" factor, but they're definitely not the "cleanest" look for a custom ....

Lannis


I'm like super lazy today. It's like normal lazy, but I'm wearing a cape.
Re: A50/A65 Magneto #28447
08/20/07 4:56 pm
08/20/07 4:56 pm
Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
BSACafe Offline OP
BritBike Forum member
BSACafe  Offline OP
BritBike Forum member
Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
Thanks again Lannis. I'll save myself some cash and go with Plan A. It's still very simple, and will help Adam with testing the Angelo without a battery. I suspect it won't have any problems and will work just fine.

I'll keep watching for your reviews of the Angelo.


Jer

http://www.caferacer.ca

1968 BSA Lightning Cafe
1968 BSA Thunderbolt
1969 BSA Royal Star
1972 BSA Thunderbolt
Re: A50/A65 Magneto #28448
08/20/07 7:17 pm
08/20/07 7:17 pm
Joined: May 2007
Posts: 38
Missoula, MT
W
whiskytango Offline
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whiskytango  Offline
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W
Joined: May 2007
Posts: 38
Missoula, MT
Where can you find an adam's angelo EI and how much do they run? Thanks!


71 BSA A65 Lightning
basket case 70 Norton 750 in a custom chopper frame.
Re: A50/A65 Magneto #28449
08/20/07 7:24 pm
08/20/07 7:24 pm
Joined: Jul 2001
Posts: 12,324
Central Virginia
Lannis Online content

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Lannis  Online Content

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Joined: Jul 2001
Posts: 12,324
Central Virginia
Quote:
Originally posted by whiskytango:
Where can you find an adam's angelo EI and how much do they run? Thanks!
Only Adam knows for sure! I'm in the middle of "beta testing" one, need to get a modified rotor in the mail and I'm to try it on my BSA, perhaps for the Raleigh Rumble in a couple of weeks? Shouldn't be too long before they're available to all and sundry ...

Lannis


I'm like super lazy today. It's like normal lazy, but I'm wearing a cape.
Re: A50/A65 Magneto #28450
08/20/07 10:33 pm
08/20/07 10:33 pm
Joined: Apr 2006
Posts: 122
australia
dogsrocket Offline
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dogsrocket  Offline
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Joined: Apr 2006
Posts: 122
australia
Hey Bsa Cafe
I run a joe hunt on my a65 bobber with no dramas what so ever running full advanced idles at 900rpm & goes like the stink on the top end. I choose to run one for the same reasons no battery, simple electrics ( lights only run when engine is running )& as lannis says "cool factor"
lucky for me i was able to pick one up second hand so it only cost $450aus my brother picked one up for his triumph brand new from joe hunt i think it cost about $900aus so its up to you if you use one but make sure you get one for a BSA as the triumph magnetos spin in the oposite direction.
Dogsrocket

Re: A50/A65 Magneto #28451
08/21/07 12:12 am
08/21/07 12:12 am
Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
BSACafe Offline OP
BritBike Forum member
BSACafe  Offline OP
BritBike Forum member
Joined: Feb 2006
Posts: 307
Saint John, New Brunswick
What is the downside of running full advance all the time? Will it cause poor running at low RPM?

I continue to think about it, and with the magneto, I'm thinking there would be less likelyhood of getting stuck with no spark. I'm thinking this since it would have less components in the system.


Jer

http://www.caferacer.ca

1968 BSA Lightning Cafe
1968 BSA Thunderbolt
1969 BSA Royal Star
1972 BSA Thunderbolt
Re: A50/A65 Magneto #28452
08/21/07 12:26 am
08/21/07 12:26 am
Joined: Jul 2001
Posts: 12,324
Central Virginia
Lannis Online content

Life member
Lannis  Online Content

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Joined: Jul 2001
Posts: 12,324
Central Virginia
Well, it's still not what I would do, but if you're determined, Ole has some BSA magneto information here:

http://pages.prodigy.net/dukie/photo.html

If a Joe Hunt is cool, a modified aircraft mag would be REALLY cool.

On the full advance thing, I don't see how a BSA timed to run at 37 degree full advance at 3000 RPM can run at that same advance at 1000 RPM; the flame front would hit the piston before it got to top dead center and you'd get awful detonation.

I suppose I'm implying that any BSA on a fixed advance must be running about 20 degrees advance or less, so that it would idle, and would run OK at high RPMs, but would run much better and more powerfully at 37 degrees advance at high RPM .... certainly willing to hear any theory that would account for otherwise ...

Lannis


I'm like super lazy today. It's like normal lazy, but I'm wearing a cape.
Re: A50/A65 Magneto #28453
08/21/07 1:13 am
08/21/07 1:13 am
Joined: Apr 2005
Posts: 1,611
Mississauga, Ontario.
A
Adam M. Offline
BritBike Forum member
Adam M.  Offline
BritBike Forum member
A
Joined: Apr 2005
Posts: 1,611
Mississauga, Ontario.
Lannis, I`m dissapointed second rotor didn`t reach your house yet, It feels I mailed it week ago.
I ordered 10 Angelo units and they are assembled just this week.
I ordered an advance curve to be a bit slower after Rich B. posts about HD springs of advance mechanism working better with BSA engines.
Their price would be $200, little less than magnetos:).

Adam M.

Re: A50/A65 Magneto #28454
08/21/07 1:24 pm
08/21/07 1:24 pm
Joined: Jul 2001
Posts: 12,324
Central Virginia
Lannis Online content

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Lannis  Online Content

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Joined: Jul 2001
Posts: 12,324
Central Virginia
Adam -

The rotor was in my mailbox when I got home yesterday evening, so back up on the rack the BSA goes .....!

Lannis


I'm like super lazy today. It's like normal lazy, but I'm wearing a cape.
Re: A50/A65 Magneto #28455
08/21/07 4:28 pm
08/21/07 4:28 pm
Joined: Oct 2006
Posts: 130
Humboldt County
rexeverything Offline
BritBike Forum
rexeverything  Offline
BritBike Forum
Joined: Oct 2006
Posts: 130
Humboldt County
Quote:
Originally posted by Lannis:
Well, it's still not what I would do, but if you're determined, Ole has some BSA magneto information here:

http://pages.prodigy.net/dukie/photo.html

If a Joe Hunt is cool, a modified aircraft mag would be REALLY cool.

On the full advance thing, I don't see how a BSA timed to run at 37 degree full advance at 3000 RPM can run at that same advance at 1000 RPM; the flame front would hit the piston before it got to top dead center and you'd get awful detonation.

I suppose I'm implying that any BSA on a fixed advance must be running about 20 degrees advance or less, so that it would idle, and would run OK at high RPMs, but would run much better and more powerfully at 37 degrees advance at high RPM .... certainly willing to hear any theory that would account for otherwise ...

Lannis
My ARD belt drive magneto is locked at full advance, I have a real stable idle that is low (blup blup blup) I do not experience detonation, and the mag tucks in under the pipes toward the center of the engine. The Joe Hunts that hang off the side of the cases
IMHO are just waiting to get smashed and broken at the first inconvenience. (plus theyre dang $$$)


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