Looking on eBay to replace my cracked 72 unit and now not sure if it is the correct one.
Penton parts manual illustration shows a long style unit (like left), but notes "BLACK wire". My cracked coil is shorter like unit on right but has a black wire. Some Spanish electrical insight required.
(http://i1297.photobucket.com/albums/ag34/NewfDesign/motoplat_coils_zpso2ln5bdw.jpg)
'72 Jackpiner - 175: 7-20555153
'14 Newfoundland - Keira 54kg
Do a search on this forum. There was a thread several years ago where Dane gave the entire history of the coils that were used.
_____________________________________________________________________________________
"We the willing, led by the unknowing, are doing the impossible, for the ungrateful. We have done so much, for so long, with so little, that we are now qualified to do almost anything, with nothing."
1972 Penton Berkshire 100
1983 Husqvarna 250 XC
2011 Jayco 31.5 RLDS
2009 Chevy 2500 HD Duramax
This may answer your question.
http://www.pentonusa.org/forum/topic.asp?TOPIC_ID=2755&SearchTerms=motoplat,coils
Dale Fisher
Penton Owners Group - President/Memberships
POG Merchandise
Mudlark Registry
Facebook - Penton Owners Group - Administrator
Facebook - Cheney Racing Group - Administrator
'70 Six-Day 125 - V2017
'72 Mudlark - W257
'73 Jackpiner - 175 21159727
'74 Berkshire 100 - 40171056
'98 HP-14 Hi-Point
And some silly other bikes...
Thanks Dale that gives me a better understanding. Kevin Donovan out of my home state of RI also gave a great summary in Dec. 2013. A studied bunch of gents at the POG.
'72 Jackpiner - 175: 7-20555153
'14 Newfoundland - Keira 54kg