John L Posted January 29, 2022 Report Share Posted January 29, 2022 I have a flyer from Rimmer Bros for their TR2-TR6 Sale. They list 2 coils, one for TR4-6 High performance up to CR/CF GCL110 HP, but NOT recommend for Lumenition, would presume its a 3ohm coil? The other for TR6 CR/CF on GCL132HP 6 volt, also NOT for Lumenition, I presume this is a Ballast coil? So the question is why are these both not recommended NOT for the Lumenition systems, are they too strong? can anybody explain please, it may be useful for others with this Lumenition ignition systems, not to fit the wrong coil. John Quote Link to post Share on other sites
stuart Posted January 29, 2022 Report Share Posted January 29, 2022 49 minutes ago, John L said: I have a flyer from Rimmer Bros for their TR2-TR6 Sale. They list 2 coils, one for TR4-6 High performance up to CR/CF GCL110 HP, but NOT recommend for Lumenition, would presume its a 3ohm coil? The other for TR6 CR/CF on GCL132HP 6 volt, also NOT for Lumenition, I presume this is a Ballast coil? So the question is why are these both not recommended NOT for the Lumenition systems, are they too strong? can anybody explain please, it may be useful for others with this Lumenition ignition systems, not to fit the wrong coil. John Why buy from them, better speaking to the man that knows, talk to Martin http://www.distributordoctor.com/ He will supply you with the correct part. Stuart. Quote Link to post Share on other sites
RobH Posted January 29, 2022 Report Share Posted January 29, 2022 I have the same leaflet and those look like standard Lucas coils. There is no electrical reason why they can't be used with the standard Optronic system. Lumenition just say "Use a coil with at least 2.5 Ω resistance (including a ballast resistor if one is fitted) with 3.0 Ω recommended " http://autocar-electrical.co.uk/products/optronic-ignitions/standard-optronic-ignition/pma50 Perhaps Rimmer just want to sell you the (maybe more expensive) Lumenition coil? Quote Link to post Share on other sites
John McCormack Posted January 30, 2022 Report Share Posted January 30, 2022 I've got Lumenition optronic in my CP TR6 and a TR2. Both with stock coils. Works fine in both, the TR6 has had this combination for maybe 25 years, 5 years in my ownership. Quote Link to post Share on other sites
SpitFireSIX Posted February 9, 2022 Report Share Posted February 9, 2022 On 1/29/2022 at 3:26 PM, stuart said: Why buy from them, better speaking to the man that knows, talk to Martin http://www.distributordoctor.com/ He will supply you with the correct part. Stuart. Is that the same guy that quotes the length of foil used in a condenser, yet quotes no electrical specs? Iain. Quote Link to post Share on other sites
astontr6 Posted February 10, 2022 Report Share Posted February 10, 2022 On 1/29/2022 at 2:35 PM, John L said: I have a flyer from Rimmer Bros for their TR2-TR6 Sale. They list 2 coils, one for TR4-6 High performance up to CR/CF GCL110 HP, but NOT recommend for Lumenition, would presume its a 3ohm coil? The other for TR6 CR/CF on GCL132HP 6 volt, also NOT for Lumenition, I presume this is a Ballast coil? So the question is why are these both not recommended NOT for the Lumenition systems, are they too strong? can anybody explain please, it may be useful for others with this Lumenition ignition systems, not to fit the wrong coil. John My Lumenition instructions which are 40 years old say use a coil of not less than 3 ohms? Bruce. Quote Link to post Share on other sites
stuart Posted February 10, 2022 Report Share Posted February 10, 2022 12 hours ago, SpitFireSIX said: Is that the same guy that quotes the length of foil used in a condenser, yet quotes no electrical specs? Iain. Not sure what your on about, please elaborate. Stuart. Quote Link to post Share on other sites
Richardtr3a Posted February 10, 2022 Report Share Posted February 10, 2022 Martin at Distributor Doctor is a specialist in this area. He has rebuilt my Distributor and helped me with hot starting problems, which have now gone away. He gives very good service and knows the subject. Rimmers are quite different !!! Richard & B Quote Link to post Share on other sites
RobH Posted February 10, 2022 Report Share Posted February 10, 2022 4 hours ago, stuart said: Not sure what you're on about, please elaborate. Iain is right that the information on Martin's website is a bit sparse. Martin only says "Original specification Lucas condensers & ours have 3 metres of winding inside, the orange ones have between 1 metre & 1.5 metres. The internal bonding & construction also left a lot to be desired." He quotes no technical specifications nor the materials used in construction. I think Iain's point point is that the actual length of winding is not at all important to performance. Nevertheless, ultimately it is practical experience that counts and I believe there is good evidence that the DD ones are rather more reliable than most of the others. It is interesting that Martin has chosen to replicate the original construction method including the spring-clamped contact which is perhaps the weakest part of the design. Better modern methods are readily available, though the originals obviously do work perfectly well. There is a pertinent discussion here: \https://ttypes.org/replacement-ignition-capacitors/ Quote Link to post Share on other sites
stuart Posted February 10, 2022 Report Share Posted February 10, 2022 38 minutes ago, RobH said: Iain is right that the information on Martin's website is a bit sparse. Martin only says "Original specification Lucas condensers & ours have 3 metres of winding inside, the orange ones have between 1 metre & 1.5 metres. The internal bonding & construction also left a lot to be desired." He quotes no technical specifications nor the materials used in construction. I think Iain's point point is that the actual length of winding is not at all important to performance. Nevertheless, ultimately it is practical experience that counts and I believe there is good evidence that the DD ones are rather more reliable than most of the others. It is interesting that Martin has chosen to replicate the original construction method including the spring-clamped contact which is perhaps the weakest part of the design. Better modern methods are readily available, though the originals obviously do work perfectly well. There is a pertinent discussion here: \https://ttypes.org/replacement-ignition-capacitors/ At the bottom of that article there is mention of capacitor discharge modules, when racing Jaguars back in the 70`s we used the "Sparkrite" units with great success as they suffered with ignition problems when run at high RPM, in fact I still have one tucked away somewhere, presumably thats what they are.. Stuart. Quote Link to post Share on other sites
SpitFireSIX Posted February 12, 2022 Report Share Posted February 12, 2022 You Can't beat a Sparkrite! I buy on EBay when about. I have EFI. LOL Quote Link to post Share on other sites
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