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coils

coils

Postby mudplugger » Fri Dec 02, 2016 1:39 pm

I am getting to the wiring stage on my Rickman build. I will soon need to know what I need to 'wire in'. battery, rectifier etc. my first question is the coils, I am sure I have seen some smaller coils in black plastic coating and a lot smaller in size, are these as good as normal coils. are they suitable, engine is 750 T140 1979, I will be running digital speedo/rev counter. 55w headlight, l.e.d rear light, not sure about ignition swt, I have thought about keyless, don't know what is available. Horn. be glad of any help and advice. thanks Neil
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Re: coils

Postby L.A.B. » Fri Dec 02, 2016 3:12 pm

mudplugger wrote:I am sure I have seen some smaller coils in black plastic coating and a lot smaller in size, are these as good as normal coils. are they suitable


It can depend on which smaller black plastic coated coils you mean and also the (electronic?) ignition system.

If it's the type shown below, then they probably aren't, as they generally have a low Ohms rating and therefore only suitable for use with certain types of digital electronic ignition.
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Re: coils

Postby mudplugger » Sun Dec 04, 2016 9:20 am

thanks LAB
76 Commando
67 P11
68 Daytona T100T
07 sprint ST
94 Triumph Speed triple mk1
79 t140 project
plus random others
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Re: coils

Postby mudplugger » Sat Dec 10, 2016 9:14 am

i have cleaned the original coils up and they are stamped , Lucas 17m6 45220a 48 78 does this mean that they are 6 volt. I am hoping to try and re-use them. can they be checked to see if they are ok. cheers for any help
76 Commando
67 P11
68 Daytona T100T
07 sprint ST
94 Triumph Speed triple mk1
79 t140 project
plus random others
User avatar

mudplugger
Posts: 139
- Images: 0
Joined: Mon Oct 24, 2011 10:48 am
Location: near Portsmouth England

Re: coils

Postby L.A.B. » Sat Dec 10, 2016 9:23 am

mudplugger wrote: i have cleaned the original coils up and they are stamped , Lucas 17m6 45220a 48 78 does this mean that they are 6 volt.


Yes (manufactured week 48, 1978)

mudplugger wrote: I am hoping to try and re-use them. can they be checked to see if they are ok. cheers for any help


The primary resistance should be about 2.0 Ohms. There should be no continuity (so 'infinity') between any terminal and the casing.
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