SOHC.co.uk Forums > CB500/550
Bike won't start - help!
deltarider:
--- Quote ---The caps I have came with the Dyna coils and HT leads I bought - they're just clips on the end of the leads, with a silicon boot that slides over top, no resistor or anything that I can see. Is this an issue?
--- End quote ---
Read the instructions your Dyna coils (what colour?) and HT leads came with and when in doubt contact Dyna. Silicon boots are fine (I run them myself (yellow leads and red boots)), but if there's no resistor in boots and leads (easy to measure) my advice would be to run (R)esistor plugs only. Without any resistor anywhere I don't know if coils will live long. Here's my experience. I bought the green 3 Ω Dyna coils decades ago. First I ran them without any resistors (nor in boots nor in plugs). One coil died after 30.000 kms and I decided it maybe was a better idea to run (R)esistor plugs. But first see what Dyna instructs. I'm not saying this is the cause of your problem, but it wouldn't harm to have this sorted out once and for all.
JustcallmeMrT:
--- Quote from: deltarider on May 31, 2016, 07:29:56 AM ---
--- Quote ---The caps I have came with the Dyna coils and HT leads I bought - they're just clips on the end of the leads, with a silicon boot that slides over top, no resistor or anything that I can see. Is this an issue?
--- End quote ---
Read the instructions your Dyna coils (what colour?) and HT leads came with and when in doubt contact Dyna. Silicon boots are fine (I run them myself (yellow leads and red boots)), but if there's no resistor in boots and leads (easy to measure) my advice would be to run (R)esistor plugs only. Without any resistor anywhere I don't know if coils will live long. Here's my experience. I bought the green 3 Ω Dyna coils decades ago. First I ran them without any resistors (nor in boots nor in plugs). One coil died after 30.000 kms and I decided it maybe was a better idea to run (R)esistor plugs. But first see what Dyna instructs. I'm not saying this is the cause of your problem, but it wouldn't harm to have this sorted out once and for all.
--- End quote ---
Called up Dyna today and they recommend running their leads without resistor plugs. They did say that a common issue that results in the same kind of symptoms as my bike is having is lower voltage to the coils due to loom issues, so defo gotta try running a direct feed to the coils.
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paul G:
Here you go Mr T if you need a relay and socket I have some spare !
JustcallmeMrT:
No improvement running power direct to the coils from the battery, but I was using small jumper cables with croc clips from Maplins - could the cable be impeding flow too much? Do they need large diameter cables?
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deltarider:
Hold it. If your coils happen to be the (green?) 3 Ω coils like mine the last thing you need is a relay. This whole relay hype crossed the Atlantic I'm afraid and I doubt there will be any advantages to speak of.
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