Classic British SparesKlempf British PartsBaxter CycleBritBike Sponsor SteadfastCyclesSRM EngineeringLucas Classic MotorcycleIndustrial tec supplyHepolite PistonsThe Bonneville Shop

Upgrade your membership to: Premium Membership | Gold Membership | Life Membership | Vendor Membership | Site Sponsor Membership
Welcome to BritBike Forum!
Britbike forum logo
Member Spotlight
Bry
Bry
Scotland
Posts: 363
Joined: May 2006
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Top Posters(30 Days)
Allan G 80
quinten 52
Top Likes Received (30 Days)
Cyborg 19
Newest Members
Steve W 1959, Bobpin, VWK740, Alloy Clipper, DonB
11,757 Registered Users
Who's Online Now
10 members (Mikeyd, jeb, rick e., Hugh Jörgen, L.A.B., Gary Caines, marinatlas, Magnetoman, Mercian, KevRasen), 30 guests, and 77 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
#849572 05/21/21 3:07 pm
Joined: Mar 2019
Posts: 845
Likes: 182
Member
OP Online Content
Member
Joined: Mar 2019
Posts: 845
Likes: 182
1970 Commando

Am toying with the idea of Pazon EI.
From what I have read PVL 6V or Dyna Coil to match the EI seems to be the way to go.
Anyone have any provisos about either?

Cheers


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
Support Your #1 BritBike Forum!

Check out British motorcycles for sale: British Motorcycles on e-Bay UK, British motorcycles on e-Bay North America
Joined: May 2005
Posts: 3,685
Likes: 2
S
Britbike forum member
Offline
Britbike forum member
S
Joined: May 2005
Posts: 3,685
Likes: 2
I've been running 6v PVL on my T140 for over 20 years with no issues


When given the choice between two evils I picked the one I haven't tried before
Joined: Mar 2019
Posts: 845
Likes: 182
Member
OP Online Content
Member
Joined: Mar 2019
Posts: 845
Likes: 182
Thanks shel.
That's with EI?
Seems EI has it's own optimal associated bits.


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
Joined: May 2005
Posts: 3,685
Likes: 2
S
Britbike forum member
Offline
Britbike forum member
S
Joined: May 2005
Posts: 3,685
Likes: 2
First with a Boyer now with a Pazon


When given the choice between two evils I picked the one I haven't tried before
Joined: Mar 2019
Posts: 845
Likes: 182
Member
OP Online Content
Member
Joined: Mar 2019
Posts: 845
Likes: 182
I might as well go to the well one more time. smile
Podtronics?


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
Joined: Jun 2002
Posts: 10,459
Likes: 41
S
Britbike forum member
Offline
Britbike forum member
S
Joined: Jun 2002
Posts: 10,459
Likes: 41
Hi,
Originally Posted by Hugh Jörgen
1970 Commando
toying with the idea of Pazon EI
PVL 6V or Dyna Coil
... or Tri-Spark?

Originally Posted by Hugh Jörgen
I might as well go to the well one more time. smile
Podtronics?
confused That link goes to a message from Fleabay that it can't find "Podtronic" ...

Nevertheless, I'm confused what that has to do with coils for an EI - Podtronics make reg./rec.?

Hth.

Regards,

Joined: Mar 2019
Posts: 845
Likes: 182
Member
OP Online Content
Member
Joined: Mar 2019
Posts: 845
Likes: 182
Originally Posted by Stuart
Hi,
Originally Posted by Hugh Jörgen
1970 Commando
toying with the idea of Pazon EI
PVL 6V or Dyna Coil
... or Tri-Spark?

Originally Posted by Hugh Jörgen
I might as well go to the well one more time. smile
Podtronics?
confused That link goes to a message from Fleabay that it can't find "Podtronic" ...

Nevertheless, I'm confused what that has to do with coils for an EI - Podtronics make reg./rec.?

Hth.

Regards,

Thanks Stuart.

Originally Posted by Stuart
... or Tri-Spark?
Had not considered Tri-Spark coils as they don't seem to have many mentions and I make an assumption (I know) that they are matched in some way to the Tri-Spark ignition. Or is it just a label?
I am finding pukka PVL 6V's pretty thin on the ground.
Originally Posted by Stuart
confused That link goes to a message from Fleabay that it can't find "Podtronic" ...
The 'go to the well' comment was intended for shel as he had been so kind as to provide a couple earlier answers.
I suspect 'Podtronics' is another of the link re-write words that messes with our linked images.

Originally Posted by Stuart
Nevertheless, I'm confused what that has to do with coils for an EI - Podtronics make reg./rec.?
Again it was aimed at shel just to see if he also used a Podtronics unit in conjunction with his Pazon/PVL setup.

Cheers


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
Joined: Jun 2002
Posts: 10,459
Likes: 41
S
Britbike forum member
Offline
Britbike forum member
S
Joined: Jun 2002
Posts: 10,459
Likes: 41
Hi,
Originally Posted by Hugh Jörgen
Pazon EI.
PVL 6V or Dyna Coil to match the EI
Originally Posted by Hugh Jörgen
I make an assumption
they are matched in some way to the Tri-Spark ignition.
confused Curious use of "match"?

Pazon, Tri-Spark, any EI for these old heaps are just a fancy on/off switch to replace points and auto-advance unit. Apart from things like Boyer-Bransden MicroPower and similar Pazon Smart-Fire, they all basically work with total coil primary resistance between 3 Ohms and 4-ish Ohms.

Risking telling you something you know already, "primary resistance" is between the spade/stud terminals on a Lucas or pattern coil, between the ends of the two thin wires on some other coils (e.g. a coil with two HT leads).

Between 3 and 4 Ohms is a '12V' coil.

If you want a separate coil for each cylinder, divide the '12V'- and therefore the primary resistance - by the number of cylinders, use individual coils of that divided 'Voltage'/resistance connected 'in series' - i.e. in your case, two '6V' coils between the Pazon "Ignition Module" Black wire and battery +ve.

When components are connected 'in series', their individual resistances are cumulative. A '6V' coil should have a primary resistance between 1.5 Ohms and 2-ish Ohms, so two '6V' coils add up to the same as one '12V' coil.

Reason I've written "4-ish" and "2-ish" is because particularly PVL's have a slightly higher primary resistance than 'original Lucas' and Tri-Spark coils, but PVL still work fine.

Apart from primary resistance, there isn't any other "match" between particular coils and EI makes.

Btw, be aware at least some current 'Wassell Lucas' coils have bizarre primary resistances - 5 Ohms? - totally unsuitable connected in series to an EI.

Originally Posted by Hugh Jörgen
Podtronics unit in conjunction with his Pazon/PVL
Reg./rec. make shouldn't have any bearing on EI make - two different electrical circuits.

Hth.

Regards,

Joined: Mar 2019
Posts: 845
Likes: 182
Member
OP Online Content
Member
Joined: Mar 2019
Posts: 845
Likes: 182
Thanks Stuart.


1970 T120R - 'Anton'
1970 Commando - 'Bruno'
1967 T120R - 'Caesar'
1968 Lightning - 'Dora'
Joined: Aug 2001
Posts: 1,491
Likes: 9
D
Crew Chief
Offline
Crew Chief
D
Joined: Aug 2001
Posts: 1,491
Likes: 9
bizarre primary resistances - 5 Ohms? - totally unsuitable connected in series to an EI.



ET coil?


dynodave
BSA 3 1961-1963
Ducati 3 1992-2002
Norton many 1951-1975
87 Serv-Equip 100HP MC brake dynamometer,
Joined: Jun 2002
Posts: 10,459
Likes: 41
S
Britbike forum member
Offline
Britbike forum member
S
Joined: Jun 2002
Posts: 10,459
Likes: 41
Hi Dave,
Originally Posted by Dave Comeau
bizarre primary resistances - 5 Ohms? - totally unsuitable connected in series to an EI.
ET coil?
Uh-uh, look like normal DC coils, not original 2ET or 3ET.

Original saved link advertising them as "suitable for both 6V and 12V" doesn't work. frown Google turns up suppliers advertising Wassell Lucas '12V' with 5-Ohm primary resistance - e.g. https://www.oldtimerbedarf.de/LUCAS-MA12-Motorrad-Zuendspule-12V-5-Ohm-Schraubanschluesse, https://www.feked.com/genuine-lucas-12v-ignition-coil-12-volt-lu47276.html; the latter also advertises '6V' with 2.5-Ohm primary.

Hth.

Regards,


Moderated by  Dave Comeau 

Link Copied to Clipboard
Job CycleBritish Cycle SupplyMorries PlaceKlempf British PartsPodtronicVintage MagazineBSA Unit SinglesBritBike SponsorBritish Tools & FastenersBritBike SponsorBritBike Sponsor






© 1996-2021 britbike.com
Powered by UBB.threads™ PHP Forum Software 7.7.5