Don’t forget to get a wiring diagram, if only in pencil

 

Most definitely will be making a diagram of what he does , i have rewired / customised/ restored many bikes mostly 70s Honda fours a couple of old Yam DTs & a Suzuki TS ER but although their looms had four times the amount of wires this little triumph has it had me stumped !!!!

 

Bike rewired , all lights work , wiring has Bladed fuse added everything was ok but the new coil got very hot even without engine running but with ignition on & then the bike would not start , adjusted points ,plugs etc had a spark & fuel but no start , took off coil put an old one i had & it started 1st kick, i suspect the coil that i bought that was advertised as genuine Lucas is in fact an EMGO one as it has a sticker underneath the lucas one & i fear it was faulty !!!

 

Hi
There has not been a genuine Lucas company since the 1990’s, the fake ‘genuine’ Lucas company just bought the name and appears to not care too much about the quality.
The aftermarket coils are often resin filled, where as better quality ones (including the original Lucas coils) were oil filled for more effusion cooling.
Tri spark coils are the only new ones that have traceable quality control. They are good but expensive.
regards
Peg.

 

Thank you very interesting info , i got it from a very well known classic bike spares shop that was advertised as genuine Lucas ,the top plastic part actually says Lucas but when it got hot the Lucas sticker came away & underneath was another stating EMGO so obviously just a copy even came in a lucas box ! , i have reached out to them to see what they say so we will see , but i know EMCO has been mentioned on this forum before ref overheating coils.

 

Hi Dave,

There has not been a genuine Lucas company since the 1990’s

This.

the fake ‘genuine’ Lucas company just bought the name

Afaik, the rights to the "Lucas" name and branding are still owned by ZF? ZF just rents 'em to Wassell.

[Wassell]appears to not care too much about the quality.

This.

advertised as genuine Lucas

"Genuine Lucas" is a concoction by Wassell; regrettably difficult to challenge as Wassell has been given the exclusive right to use the "Lucas" name/branding.

Emgo and Wassell collaborate to a great extent over a large range of spares for old Britbikes, the companies don't challenge each other in several markets, including Europe and the US.

Several possible reasons for the coil becoming very hot, likely centred around incorrect the primary resistance. You could ask the person who rewired your bike to check this, he should know the correct coil primary resistance ranges for the bike's nominal DC system Voltage (6V or 12V). Whatever the fault, would give you a cast-iron reason for demanding a refund from the seller.

Regards,